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<h2><span class="refentrytitle"><a name="libgda-4.0-Gda-Value.top_of_page"></a>A single Value</span></h2>
<p>A single Value — Assorted functions for dealing with <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> values.</p>
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<a name="libgda-4.0-Gda-Value.synopsis"></a><h2>Synopsis</h2>
<a name="GdaBinary"></a><a name="GdaGeometricPoint"></a><a name="GdaValueList"></a><a name="GdaNumeric"></a><a name="GdaTime"></a><a name="GdaTimestamp"></a><pre class="synopsis"><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="returnvalue">GValue</span></a> * <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-new" title="gda_value_new ()">gda_value_new</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a> type</code></em>);
#define <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-new-null" title="gda_value_new_null">gda_value_new_null</a>
<a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="returnvalue">GValue</span></a> * <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-copy" title="gda_value_copy ()">gda_value_copy</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);
<span class="returnvalue">void</span> <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-free" title="gda_value_free ()">gda_value_free</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);
<a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="returnvalue">GValue</span></a> * <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-new-from-string" title="gda_value_new_from_string ()">gda_value_new_from_string</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *as_string</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a> type</code></em>);
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-set-from-string" title="gda_value_set_from_string ()">gda_value_set_from_string</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>,
<em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *as_string</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a> type</code></em>);
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-set-from-value" title="gda_value_set_from_value ()">gda_value_set_from_value</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>,
<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *from</code></em>);
<span class="returnvalue">void</span> <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-set-null" title="gda_value_set_null ()">gda_value_set_null</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> * <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-stringify" title="gda_value_stringify ()">gda_value_stringify</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a> <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-differ" title="gda_value_differ ()">gda_value_differ</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value1</code></em>,
<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value2</code></em>);
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a> <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-compare" title="gda_value_compare ()">gda_value_compare</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value1</code></em>,
<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value2</code></em>);
<a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="returnvalue">GValue</span></a> * <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-new-from-xml" title="gda_value_new_from_xml ()">gda_value_new_from_xml</a> (<em class="parameter"><code>const <span class="type">xmlNodePtr</span> node</code></em>);
<span class="returnvalue">xmlNodePtr</span> <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-to-xml" title="gda_value_to_xml ()">gda_value_to_xml</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);
<span class="returnvalue">void</span> <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-reset-with-type" title="gda_value_reset_with_type ()">gda_value_reset_with_type</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a> type</code></em>);
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-is-null" title="gda_value_is_null ()">gda_value_is_null</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-is-number" title="gda_value_is_number ()">gda_value_is_number</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);
#define <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-isa" title="gda_value_isa()">gda_value_isa</a> (value,
type)
<a class="link" href="libgda-4.0-Gda-Value.html#GdaBinary-struct" title="GdaBinary">GdaBinary</a>;
<a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="returnvalue">GValue</span></a> * <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-new-binary" title="gda_value_new_binary ()">gda_value_new_binary</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guchar"><span class="type">guchar</span></a> *val</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#glong"><span class="type">glong</span></a> size</code></em>);
const <a class="link" href="libgda-4.0-Gda-Value.html#GdaBinary"><span class="returnvalue">GdaBinary</span></a> * <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-get-binary" title="gda_value_get_binary ()">gda_value_get_binary</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);
<span class="returnvalue">void</span> <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-set-binary" title="gda_value_set_binary ()">gda_value_set_binary</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>,
<em class="parameter"><code>const <a class="link" href="libgda-4.0-Gda-Value.html#GdaBinary"><span class="type">GdaBinary</span></a> *binary</code></em>);
<span class="returnvalue">void</span> <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-take-binary" title="gda_value_take_binary ()">gda_value_take_binary</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>,
<em class="parameter"><code><a class="link" href="libgda-4.0-Gda-Value.html#GdaBinary"><span class="type">GdaBinary</span></a> *binary</code></em>);
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="returnvalue">gpointer</span></a> <a class="link" href="libgda-4.0-Gda-Value.html#gda-binary-copy" title="gda_binary_copy ()">gda_binary_copy</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> boxed</code></em>);
<span class="returnvalue">void</span> <a class="link" href="libgda-4.0-Gda-Value.html#gda-binary-free" title="gda_binary_free ()">gda_binary_free</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> boxed</code></em>);
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> * <a class="link" href="libgda-4.0-Gda-Value.html#gda-binary-to-string" title="gda_binary_to_string ()">gda_binary_to_string</a> (<em class="parameter"><code>const <a class="link" href="libgda-4.0-Gda-Value.html#GdaBinary"><span class="type">GdaBinary</span></a> *bin</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> maxlen</code></em>);
<a class="link" href="libgda-4.0-Gda-Value.html#GdaBinary"><span class="returnvalue">GdaBinary</span></a> * <a class="link" href="libgda-4.0-Gda-Value.html#gda-string-to-binary" title="gda_string_to_binary ()">gda_string_to_binary</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *str</code></em>);
<a class="link" href="libgda-4.0-Gda-Value.html#GdaBlob" title="GdaBlob">GdaBlob</a>;
<a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="returnvalue">GValue</span></a> * <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-new-blob" title="gda_value_new_blob ()">gda_value_new_blob</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guchar"><span class="type">guchar</span></a> *val</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#glong"><span class="type">glong</span></a> size</code></em>);
<a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="returnvalue">GValue</span></a> * <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-new-blob-from-file" title="gda_value_new_blob_from_file ()">gda_value_new_blob_from_file</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *filename</code></em>);
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="returnvalue">gpointer</span></a> <a class="link" href="libgda-4.0-Gda-Value.html#gda-blob-copy" title="gda_blob_copy ()">gda_blob_copy</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> boxed</code></em>);
<span class="returnvalue">void</span> <a class="link" href="libgda-4.0-Gda-Value.html#gda-blob-free" title="gda_blob_free ()">gda_blob_free</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> boxed</code></em>);
const <a class="link" href="libgda-4.0-Gda-Value.html#GdaBlob" title="GdaBlob"><span class="returnvalue">GdaBlob</span></a> * <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-get-blob" title="gda_value_get_blob ()">gda_value_get_blob</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);
<span class="returnvalue">void</span> <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-set-blob" title="gda_value_set_blob ()">gda_value_set_blob</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>,
<em class="parameter"><code>const <a class="link" href="libgda-4.0-Gda-Value.html#GdaBlob" title="GdaBlob"><span class="type">GdaBlob</span></a> *blob</code></em>);
<span class="returnvalue">void</span> <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-take-blob" title="gda_value_take_blob ()">gda_value_take_blob</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>,
<em class="parameter"><code><a class="link" href="libgda-4.0-Gda-Value.html#GdaBlob" title="GdaBlob"><span class="type">GdaBlob</span></a> *blob</code></em>);
<span class="returnvalue">void</span> <a class="link" href="libgda-4.0-Gda-Value.html#gda-blob-set-op" title="gda_blob_set_op ()">gda_blob_set_op</a> (<em class="parameter"><code><a class="link" href="libgda-4.0-Gda-Value.html#GdaBlob" title="GdaBlob"><span class="type">GdaBlob</span></a> *blob</code></em>,
<em class="parameter"><code><a class="link" href="GdaBlobOp.html" title="Blobs"><span class="type">GdaBlobOp</span></a> *op</code></em>);
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> * <a class="link" href="libgda-4.0-Gda-Value.html#gda-blob-to-string" title="gda_blob_to_string ()">gda_blob_to_string</a> (<em class="parameter"><code><a class="link" href="libgda-4.0-Gda-Value.html#GdaBlob" title="GdaBlob"><span class="type">GdaBlob</span></a> *blob</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> maxlen</code></em>);
<a class="link" href="libgda-4.0-Gda-Value.html#GdaGeometricPoint-struct" title="GdaGeometricPoint">GdaGeometricPoint</a>;
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="returnvalue">gpointer</span></a> <a class="link" href="libgda-4.0-Gda-Value.html#gda-geometricpoint-copy" title="gda_geometricpoint_copy ()">gda_geometricpoint_copy</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> boxed</code></em>);
<span class="returnvalue">void</span> <a class="link" href="libgda-4.0-Gda-Value.html#gda-geometricpoint-free" title="gda_geometricpoint_free ()">gda_geometricpoint_free</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> boxed</code></em>);
const <a class="link" href="libgda-4.0-Gda-Value.html#GdaGeometricPoint"><span class="returnvalue">GdaGeometricPoint</span></a> * <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-get-geometric-point" title="gda_value_get_geometric_point ()">gda_value_get_geometric_point</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);
<span class="returnvalue">void</span> <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-set-geometric-point" title="gda_value_set_geometric_point ()">gda_value_set_geometric_point</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>,
<em class="parameter"><code>const <a class="link" href="libgda-4.0-Gda-Value.html#GdaGeometricPoint"><span class="type">GdaGeometricPoint</span></a> *val</code></em>);
typedef <a class="link" href="libgda-4.0-Gda-Value.html#GdaValueList">GdaValueList</a>;
const <a class="link" href="libgda-4.0-Gda-Value.html#GdaValueList"><span class="returnvalue">GdaValueList</span></a> * <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-get-list" title="gda_value_get_list ()">gda_value_get_list</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);
<span class="returnvalue">void</span> <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-set-list" title="gda_value_set_list ()">gda_value_set_list</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>,
<em class="parameter"><code>const <a class="link" href="libgda-4.0-Gda-Value.html#GdaValueList"><span class="type">GdaValueList</span></a> *val</code></em>);
<a class="link" href="libgda-4.0-Gda-Value.html#GdaNumeric-struct" title="GdaNumeric">GdaNumeric</a>;
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="returnvalue">gpointer</span></a> <a class="link" href="libgda-4.0-Gda-Value.html#gda-numeric-copy" title="gda_numeric_copy ()">gda_numeric_copy</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> boxed</code></em>);
<span class="returnvalue">void</span> <a class="link" href="libgda-4.0-Gda-Value.html#gda-numeric-free" title="gda_numeric_free ()">gda_numeric_free</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> boxed</code></em>);
const <a class="link" href="libgda-4.0-Gda-Value.html#GdaNumeric"><span class="returnvalue">GdaNumeric</span></a> * <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-get-numeric" title="gda_value_get_numeric ()">gda_value_get_numeric</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);
<span class="returnvalue">void</span> <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-set-numeric" title="gda_value_set_numeric ()">gda_value_set_numeric</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>,
<em class="parameter"><code>const <a class="link" href="libgda-4.0-Gda-Value.html#GdaNumeric"><span class="type">GdaNumeric</span></a> *val</code></em>);
<a class="link" href="libgda-4.0-Gda-Value.html#GdaTime-struct" title="GdaTime">GdaTime</a>;
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="returnvalue">gpointer</span></a> <a class="link" href="libgda-4.0-Gda-Value.html#gda-time-copy" title="gda_time_copy ()">gda_time_copy</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> boxed</code></em>);
<span class="returnvalue">void</span> <a class="link" href="libgda-4.0-Gda-Value.html#gda-time-free" title="gda_time_free ()">gda_time_free</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> boxed</code></em>);
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="libgda-4.0-Gda-Value.html#gda-time-valid" title="gda_time_valid ()">gda_time_valid</a> (<em class="parameter"><code>const <a class="link" href="libgda-4.0-Gda-Value.html#GdaTime"><span class="type">GdaTime</span></a> *time</code></em>);
const <a class="link" href="libgda-4.0-Gda-Value.html#GdaTime"><span class="returnvalue">GdaTime</span></a> * <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-get-time" title="gda_value_get_time ()">gda_value_get_time</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);
<span class="returnvalue">void</span> <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-set-time" title="gda_value_set_time ()">gda_value_set_time</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>,
<em class="parameter"><code>const <a class="link" href="libgda-4.0-Gda-Value.html#GdaTime"><span class="type">GdaTime</span></a> *val</code></em>);
<a class="link" href="libgda-4.0-Gda-Value.html#GdaTimestamp-struct" title="GdaTimestamp">GdaTimestamp</a>;
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="returnvalue">gpointer</span></a> <a class="link" href="libgda-4.0-Gda-Value.html#gda-timestamp-copy" title="gda_timestamp_copy ()">gda_timestamp_copy</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> boxed</code></em>);
<span class="returnvalue">void</span> <a class="link" href="libgda-4.0-Gda-Value.html#gda-timestamp-free" title="gda_timestamp_free ()">gda_timestamp_free</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> boxed</code></em>);
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> <a class="link" href="libgda-4.0-Gda-Value.html#gda-timestamp-valid" title="gda_timestamp_valid ()">gda_timestamp_valid</a> (<em class="parameter"><code>const <a class="link" href="libgda-4.0-Gda-Value.html#GdaTimestamp"><span class="type">GdaTimestamp</span></a> *timestamp</code></em>);
const <a class="link" href="libgda-4.0-Gda-Value.html#GdaTimestamp"><span class="returnvalue">GdaTimestamp</span></a> * <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-get-timestamp" title="gda_value_get_timestamp ()">gda_value_get_timestamp</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);
<span class="returnvalue">void</span> <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-set-timestamp" title="gda_value_set_timestamp ()">gda_value_set_timestamp</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>,
<em class="parameter"><code>const <a class="link" href="libgda-4.0-Gda-Value.html#GdaTimestamp"><span class="type">GdaTimestamp</span></a> *val</code></em>);
<a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="returnvalue">GValue</span></a> * <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-new-timestamp-from-timet" title="gda_value_new_timestamp_from_timet ()">gda_value_new_timestamp_from_timet</a> (<em class="parameter"><code><span class="type">time_t</span> val</code></em>);
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gshort"><span class="returnvalue">gshort</span></a> <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-get-short" title="gda_value_get_short ()">gda_value_get_short</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);
<span class="returnvalue">void</span> <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-set-short" title="gda_value_set_short ()">gda_value_set_short</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>,
<em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gshort"><span class="type">gshort</span></a> val</code></em>);
<a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gushort"><span class="returnvalue">gushort</span></a> <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-get-ushort" title="gda_value_get_ushort ()">gda_value_get_ushort</a> (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);
<span class="returnvalue">void</span> <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-set-ushort" title="gda_value_set_ushort ()">gda_value_set_ushort</a> (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>,
<em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gushort"><span class="type">gushort</span></a> val</code></em>);
</pre>
</div>
<div class="refsect1">
<a name="libgda-4.0-Gda-Value.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="synopsis">
GBoxed
+----GdaBinary
</pre>
<pre class="synopsis">
GBoxed
+----GdaGeometricPoint
</pre>
<pre class="synopsis">
GBoxed
+----GdaValueList
</pre>
<pre class="synopsis">
GBoxed
+----GdaNumeric
</pre>
<pre class="synopsis">
GBoxed
+----GdaTime
</pre>
<pre class="synopsis">
GBoxed
+----GdaTimestamp
</pre>
</div>
<div class="refsect1">
<a name="libgda-4.0-Gda-Value.description"></a><h2>Description</h2>
<p>
<span class="application">Libgda</span> manages each individual value within an opaque <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> structure. Any GValue type can be used,
and <span class="application">Libgda</span> adds a few more data types usually found in DBMS such as NUMERIC, TIME, TIMESTAMP, GEOMETRIC POINT, BINARY and BLOB.
</p>
<p>
Libgda makes a distinction between binary and blob types
</p>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem"><p>binary data can be inserted into an SQL statement using a
(DBMS dependent) syntax, such as "X'ABCD'" syntax for SQLite or the binary strings syntax for PostgreSQL. Binary data
is manipulated using a <a class="link" href="libgda-4.0-Gda-Value.html#GdaBinary"><span class="type">GdaBinary</span></a> structure (which is basically a bytes buffer and a length attribute).
</p></li>
<li class="listitem"><p>blob data are a special feature that some DBMS have which requires some non SQL code to manipulate them.
Usually only a reference is stored in each table containing a blob, and the actual blob data resides somewhere on the disk
(while still being managed transparently by the database). For example PotsgreSQL stores blobs as files on the disk and
references them using object identifiers (Oid). Blob data
is manipulated using a <a class="link" href="libgda-4.0-Gda-Value.html#GdaBlob" title="GdaBlob"><span class="type">GdaBlob</span></a> structure which encapsulates a <a class="link" href="libgda-4.0-Gda-Value.html#GdaBinary"><span class="type">GdaBinary</span></a> structure and adds a reference to a
<a class="link" href="GdaBlobOp.html" title="Blobs"><span class="type">GdaBlobOp</span></a> object used to read and write data from and to the blob.
</p></li>
</ul></div>
<p>
Please note that is distinction between binary data and blobs is Libgda only and does not reflect the DBMS's documentations;
for instance MySQL has several BLOB types but Libgda interprets them as binary types.
</p>
<p>
Each provider or connection can be queried about its blob support using the <a class="link" href="GdaServerProvider.html#gda-server-provider-supports-feature" title="gda_server_provider_supports_feature ()"><code class="function">gda_server_provider_supports_feature()</code></a> or
<a class="link" href="GdaConnection.html#gda-connection-supports-feature" title="gda_connection_supports_feature ()"><code class="function">gda_connection_supports_feature()</code></a> methods.
</p>
<p>
The NULL value is a special case value: it is represented by to a zero-filled (uninitialized) <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> and has a type equal
to GDA_TYPE_NULL.
</p>
</div>
<div class="refsect1">
<a name="libgda-4.0-Gda-Value.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="gda-value-new"></a><h3>gda_value_new ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="returnvalue">GValue</span></a> * gda_value_new (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a> type</code></em>);</pre>
<p>
Makes a new <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> of type <em class="parameter"><code>type</code></em>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>type</code></em> :</span></p></td>
<td>the new value type.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the newly created <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> with the specified <em class="parameter"><code>type</code></em>. You need to set the value in the returned GValue.
Free-function: gda_value_free. <span class="annotation">[<a href="http://foldoc.org/transfer%20full"><span class="acronym">transfer full</span></a>]</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-value-new-null"></a><h3>gda_value_new_null</h3>
<pre class="programlisting">#define gda_value_new_null() (g_new0 (GValue, 1))
</pre>
<p>
</p>
</div>
<hr>
<div class="refsect2">
<a name="gda-value-copy"></a><h3>gda_value_copy ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="returnvalue">GValue</span></a> * gda_value_copy (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);</pre>
<p>
Creates a new <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> from an existing one.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td>
<td>value to get a copy from.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a newly allocated <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> with a copy of the data in <em class="parameter"><code>value</code></em>.
Free-function: gda_value_free. <span class="annotation">[<a href="http://foldoc.org/transfer%20full"><span class="acronym">transfer full</span></a>]</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-value-free"></a><h3>gda_value_free ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gda_value_free (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);</pre>
<p>
Deallocates all memory associated to a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td>
<td>the resource to free. <span class="annotation">[<a href="http://foldoc.org/transfer%20full"><span class="acronym">transfer full</span></a>]</span>
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-value-new-from-string"></a><h3>gda_value_new_from_string ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="returnvalue">GValue</span></a> * gda_value_new_from_string (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *as_string</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a> type</code></em>);</pre>
<p>
Makes a new <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> of type <em class="parameter"><code>type</code></em> from its string representation.
</p>
<p>
For more information
about the string format, see the <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-set-from-string" title="gda_value_set_from_string ()"><code class="function">gda_value_set_from_string()</code></a> function.
This function is typically used when reading configuration files or other non-user input that should be locale
independent.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>as_string</code></em> :</span></p></td>
<td>stringified representation of the value.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>type</code></em> :</span></p></td>
<td>the new value type.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the newly created <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> or <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if the string representation cannot be converted to the specified <em class="parameter"><code>type</code></em>.
Free-function: gda_value_free. <span class="annotation">[<a href="http://foldoc.org/transfer%20full"><span class="acronym">transfer full</span></a>]</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-value-set-from-string"></a><h3>gda_value_set_from_string ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> gda_value_set_from_string (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>,
<em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *as_string</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a> type</code></em>);</pre>
<p>
Stores the value data from its string representation as <em class="parameter"><code>type</code></em>.
</p>
<p>
The accepted formats are:
</p>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem"><p>G_TYPE_BOOLEAN: a caseless comparison is made with "true" or "false"</p></li>
<li class="listitem"><p>numerical types: C locale format (dot as a fraction separator)</p></li>
<li class="listitem"><p>G_TYPE_DATE: see <a class="link" href="libgda-4.0-Utility-functions.html#gda-parse-iso8601-date" title="gda_parse_iso8601_date ()"><a class="link" href="libgda-4.0-Utility-functions.html#gda-parse-iso8601-date" title="gda_parse_iso8601_date ()"><code class="function">gda_parse_iso8601_date()</code></a></a></p></li>
<li class="listitem"><p>GDA_TYPE_TIME: see <a class="link" href="libgda-4.0-Utility-functions.html#gda-parse-iso8601-time" title="gda_parse_iso8601_time ()"><a class="link" href="libgda-4.0-Utility-functions.html#gda-parse-iso8601-time" title="gda_parse_iso8601_time ()"><code class="function">gda_parse_iso8601_time()</code></a></a></p></li>
<li class="listitem"><p>GDA_TYPE_TIMESTAMP: see <a class="link" href="libgda-4.0-Utility-functions.html#gda-parse-iso8601-timestamp" title="gda_parse_iso8601_timestamp ()"><a class="link" href="libgda-4.0-Utility-functions.html#gda-parse-iso8601-timestamp" title="gda_parse_iso8601_timestamp ()"><code class="function">gda_parse_iso8601_timestamp()</code></a></a></p></li>
</ul></div>
<p>
</p>
<p>
This function is typically used when reading configuration files or other non-user input that should be locale
independent.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td>
<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> that will store <em class="parameter"><code>val</code></em>.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>as_string</code></em> :</span></p></td>
<td>the stringified representation of the value.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>type</code></em> :</span></p></td>
<td>the type of the value</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>
<a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if the value has been converted to <em class="parameter"><code>type</code></em> from
its string representation; it not means that the value is converted
successfully, just that the transformation is available. <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> otherwise.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-value-set-from-value"></a><h3>gda_value_set_from_value ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> gda_value_set_from_value (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>,
<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *from</code></em>);</pre>
<p>
Sets the value of a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> from another <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a>. This
is different from <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-copy" title="gda_value_copy ()"><span class="type">gda_value_copy</span></a>, which creates a new <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a>.
<a class="link" href="libgda-4.0-Gda-Value.html#gda-value-set-from-value" title="gda_value_set_from_value ()"><span class="type">gda_value_set_from_value</span></a>, on the other hand, copies the contents
of <em class="parameter"><code>copy</code></em> into <em class="parameter"><code>value</code></em>, which must already be allocated.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td>
<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a>.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>from</code></em> :</span></p></td>
<td>the value to copy from.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>
<a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if successful, <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> otherwise.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-value-set-null"></a><h3>gda_value_set_null ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gda_value_set_null (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);</pre>
<p>
Sets the type of <em class="parameter"><code>value</code></em> to <span class="type">GDA_TYPE_NULL</span>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td>
<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> that will store a value of type <span class="type">GDA_TYPE_NULL</span>.</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-value-stringify"></a><h3>gda_value_stringify ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> * gda_value_stringify (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);</pre>
<p>
Converts a GValue to its string representation which is a human readable value. Note that the
returned string does not take into account the current locale of the user (on the contrary to the
<a class="link" href="libgda-4.0-Default-Data-handlers.html#GdaDataHandler"><span class="type">GdaDataHandler</span></a> objects). Using this function should be limited to debugging and values serialization
purposes.
</p>
<p>
Dates are converted in a YYYY-MM-DD format.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td>
<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a>.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a new string, or <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> if the conversion cannot be done. Free the value with a <a href="http://library.gnome.org/devel/glib/unstable/glib-Memory-Allocation.html#g-free"><code class="function">g_free()</code></a> when you've finished using it. <span class="annotation">[<a href="http://foldoc.org/transfer%20full"><span class="acronym">transfer full</span></a>]</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-value-differ"></a><h3>gda_value_differ ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a> gda_value_differ (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value1</code></em>,
<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value2</code></em>);</pre>
<p>
Tells if two values are equal or not, by comparing memory representations. Unlike <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-compare" title="gda_value_compare ()"><code class="function">gda_value_compare()</code></a>,
the returned value is boolean, and gives no idea about ordering.
</p>
<p>
The two values must be of the same type, with the exception that a value of any type can be
compared to a GDA_TYPE_NULL value, specifically:
</p>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem"><p>if <em class="parameter"><code>value1</code></em> and <em class="parameter"><code>value2</code></em> are both GDA_TYPE_NULL values then the returned value is 0</p></li>
<li class="listitem"><p>if <em class="parameter"><code>value1</code></em> is a GDA_TYPE_NULL value and <em class="parameter"><code>value2</code></em> is of another type then the returned value is 1</p></li>
<li class="listitem"><p>if <em class="parameter"><code>value1</code></em> is of another type and <em class="parameter"><code>value2</code></em> is a GDA_TYPE_NULL value then the returned value is 1</p></li>
<li class="listitem"><p>in all other cases, <em class="parameter"><code>value1</code></em> and <em class="parameter"><code>value2</code></em> must be of the same type and their values are compared</p></li>
</ul></div>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>value1</code></em> :</span></p></td>
<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> to compare.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>value2</code></em> :</span></p></td>
<td>the other <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> to be compared to <em class="parameter"><code>value1</code></em>.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a non 0 value if <em class="parameter"><code>value1</code></em> and <em class="parameter"><code>value2</code></em> differ, and 0 if they are equal</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-value-compare"></a><h3>gda_value_compare ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gint"><span class="returnvalue">gint</span></a> gda_value_compare (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value1</code></em>,
<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value2</code></em>);</pre>
<p>
Compares two values of the same type, with the exception that a value of any type can be
compared to a GDA_TYPE_NULL value, specifically:
</p>
<div class="itemizedlist"><ul class="itemizedlist" type="disc">
<li class="listitem"><p>if <em class="parameter"><code>value1</code></em> and <em class="parameter"><code>value2</code></em> are both GDA_TYPE_NULL values then the returned value is 0</p></li>
<li class="listitem"><p>if <em class="parameter"><code>value1</code></em> is a GDA_TYPE_NULL value and <em class="parameter"><code>value2</code></em> is of another type then the returned value is -1</p></li>
<li class="listitem"><p>if <em class="parameter"><code>value1</code></em> is of another type and <em class="parameter"><code>value2</code></em> is a GDA_TYPE_NULL value then the returned value is 1</p></li>
<li class="listitem"><p>in all other cases, <em class="parameter"><code>value1</code></em> and <em class="parameter"><code>value2</code></em> must be of the same type and their values are compared</p></li>
</ul></div>
<p>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>value1</code></em> :</span></p></td>
<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> to compare (not <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>)</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>value2</code></em> :</span></p></td>
<td>the other <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> to be compared to <em class="parameter"><code>value1</code></em> (not <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>)</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>if both values have the same type, returns 0 if both contain
the same value, an integer less than 0 if <em class="parameter"><code>value1</code></em> is less than <em class="parameter"><code>value2</code></em> or
an integer greater than 0 if <em class="parameter"><code>value1</code></em> is greater than <em class="parameter"><code>value2</code></em>.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-value-new-from-xml"></a><h3>gda_value_new_from_xml ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="returnvalue">GValue</span></a> * gda_value_new_from_xml (<em class="parameter"><code>const <span class="type">xmlNodePtr</span> node</code></em>);</pre>
<p>
Creates a GValue from an XML representation of it. That XML
node corresponds to the following string representation:
<value type="gdatype">value</value>
</p>
<p>
For more information
about the string format, see the <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-set-from-string" title="gda_value_set_from_string ()"><code class="function">gda_value_set_from_string()</code></a> function.
This function is typically used when reading configuration files or other non-user input that should be locale
independent.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>node</code></em> :</span></p></td>
<td>an XML node representing the value.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the newly created <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a>.
Free-function: gda_value_free. <span class="annotation">[<a href="http://foldoc.org/transfer%20full"><span class="acronym">transfer full</span></a>]</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-value-to-xml"></a><h3>gda_value_to_xml ()</h3>
<pre class="programlisting"><span class="returnvalue">xmlNodePtr</span> gda_value_to_xml (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);</pre>
<p>
Serializes the given <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> to an XML node string.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td>
<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a>.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the XML node. Once not needed anymore, you should free it. <span class="annotation">[<a href="http://foldoc.org/transfer%20full"><span class="acronym">transfer full</span></a>]</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-value-reset-with-type"></a><h3>gda_value_reset_with_type ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gda_value_reset_with_type (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Type-Information.html#GType"><span class="type">GType</span></a> type</code></em>);</pre>
<p>
</p>
</div>
<hr>
<div class="refsect2">
<a name="gda-value-is-null"></a><h3>gda_value_is_null ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> gda_value_is_null (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);</pre>
<p>
Tests if a given <em class="parameter"><code>value</code></em> is of type <span class="type">GDA_TYPE_NULL</span>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td>
<td>value to test.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a boolean that says whether or not <em class="parameter"><code>value</code></em> is of type <span class="type">GDA_TYPE_NULL</span>.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-value-is-number"></a><h3>gda_value_is_number ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> gda_value_is_number (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);</pre>
<p>
Gets whether the value stored in the given <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> is of numeric type or not.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td>
<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a>.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>
<a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> if a number, <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> otherwise.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-value-isa"></a><h3>gda_value_isa()</h3>
<pre class="programlisting">#define gda_value_isa(value, type) (G_VALUE_HOLDS(value, type))
</pre>
<p>
</p>
</div>
<hr>
<div class="refsect2">
<a name="GdaBinary-struct"></a><h3>GdaBinary</h3>
<pre class="programlisting">typedef struct _GdaBinary GdaBinary;</pre>
<p>
</p>
</div>
<hr>
<div class="refsect2">
<a name="gda-value-new-binary"></a><h3>gda_value_new_binary ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="returnvalue">GValue</span></a> * gda_value_new_binary (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guchar"><span class="type">guchar</span></a> *val</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#glong"><span class="type">glong</span></a> size</code></em>);</pre>
<p>
Makes a new <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> of type <span class="type">GDA_TYPE_BINARY</span> with value <em class="parameter"><code>val</code></em>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>val</code></em> :</span></p></td>
<td>value to set for the new <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a>.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>size</code></em> :</span></p></td>
<td>the size of the memory pool pointer to by <em class="parameter"><code>val</code></em>.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the newly created <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a>.
Free-function: gda_value_free. <span class="annotation">[<a href="http://foldoc.org/transfer%20full"><span class="acronym">transfer full</span></a>]</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-value-get-binary"></a><h3>gda_value_get_binary ()</h3>
<pre class="programlisting">const <a class="link" href="libgda-4.0-Gda-Value.html#GdaBinary"><span class="returnvalue">GdaBinary</span></a> * gda_value_get_binary (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);</pre>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td>
<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> whose value we want to get.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the value stored in <em class="parameter"><code>value</code></em>. <span class="annotation">[<a href="http://foldoc.org/transfer%20none"><span class="acronym">transfer none</span></a>]</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-value-set-binary"></a><h3>gda_value_set_binary ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gda_value_set_binary (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>,
<em class="parameter"><code>const <a class="link" href="libgda-4.0-Gda-Value.html#GdaBinary"><span class="type">GdaBinary</span></a> *binary</code></em>);</pre>
<p>
Stores <em class="parameter"><code>val</code></em> into <em class="parameter"><code>value</code></em>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td>
<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> that will store <em class="parameter"><code>val</code></em>.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>binary</code></em> :</span></p></td>
<td>a <a class="link" href="libgda-4.0-Gda-Value.html#GdaBinary"><span class="type">GdaBinary</span></a> structure with the data and its size to be stored in <em class="parameter"><code>value</code></em>.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-value-take-binary"></a><h3>gda_value_take_binary ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gda_value_take_binary (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>,
<em class="parameter"><code><a class="link" href="libgda-4.0-Gda-Value.html#GdaBinary"><span class="type">GdaBinary</span></a> *binary</code></em>);</pre>
<p>
Stores <em class="parameter"><code>val</code></em> into <em class="parameter"><code>value</code></em>, but on the contrary to <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-set-binary" title="gda_value_set_binary ()"><code class="function">gda_value_set_binary()</code></a>, the <em class="parameter"><code>binary</code></em>
argument is not copied, but used as-is and it should be considered owned by <em class="parameter"><code>value</code></em>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td>
<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> that will store <em class="parameter"><code>val</code></em>.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>binary</code></em> :</span></p></td>
<td>a <a class="link" href="libgda-4.0-Gda-Value.html#GdaBinary"><span class="type">GdaBinary</span></a> structure with the data and its size to be stored in <em class="parameter"><code>value</code></em>. <span class="annotation">[<a href="http://foldoc.org/transfer%20full"><span class="acronym">transfer full</span></a>]</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-binary-copy"></a><h3>gda_binary_copy ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="returnvalue">gpointer</span></a> gda_binary_copy (<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> boxed</code></em>);</pre>
<p>
Creates a new <a class="link" href="libgda-4.0-Gda-Value.html#GdaBinary"><span class="type">GdaBinary</span></a> structure from an existing one.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>boxed</code></em> :</span></p></td>
<td>source to get a copy from.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a newly allocated <a class="link" href="libgda-4.0-Gda-Value.html#GdaBinary"><span class="type">GdaBinary</span></a> which contains a copy of information in <em class="parameter"><code>boxed</code></em>.
Free-function: gda_binary_free. <span class="annotation">[<a href="http://foldoc.org/transfer%20full"><span class="acronym">transfer full</span></a>]</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-binary-free"></a><h3>gda_binary_free ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gda_binary_free (<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> boxed</code></em>);</pre>
<p>
Deallocates all memory associated to the given <a class="link" href="libgda-4.0-Gda-Value.html#GdaBinary"><span class="type">GdaBinary</span></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>boxed</code></em> :</span></p></td>
<td>
<a class="link" href="libgda-4.0-Gda-Value.html#GdaBinary"><span class="type">GdaBinary</span></a> to free. <span class="annotation">[<a href="http://foldoc.org/transfer%20full"><span class="acronym">transfer full</span></a>]</span>
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-binary-to-string"></a><h3>gda_binary_to_string ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> * gda_binary_to_string (<em class="parameter"><code>const <a class="link" href="libgda-4.0-Gda-Value.html#GdaBinary"><span class="type">GdaBinary</span></a> *bin</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> maxlen</code></em>);</pre>
<p>
Converts all the non printable characters of bin->data into the "\xyz" representation
where "xyz" is the octal representation of the byte, and the '\' (backslash) character
is converted to "\\".
</p>
<p>
Note that the backslash and newline characters are considered as printable characters and
will not be represented by the "\xyz" representation.
</p>
<p>
Use this function to get a representation as much readable by humans as possible of a binary
chunk. Note that this function is internally called when transforming a binary value to
a string for example when using <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#g-value-transform"><code class="function">g_value_transform()</code></a> or <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-stringify" title="gda_value_stringify ()"><code class="function">gda_value_stringify()</code></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>bin</code></em> :</span></p></td>
<td>a correctly filled <em class="parameter"><code>GdaBinary</code></em> structure</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>maxlen</code></em> :</span></p></td>
<td>a maximum len used to truncate, or <code class="literal">0</code> for no maximum length</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a new string from <em class="parameter"><code>bin</code></em>. <span class="annotation">[<a href="http://foldoc.org/transfer%20full"><span class="acronym">transfer full</span></a>]</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-string-to-binary"></a><h3>gda_string_to_binary ()</h3>
<pre class="programlisting"><a class="link" href="libgda-4.0-Gda-Value.html#GdaBinary"><span class="returnvalue">GdaBinary</span></a> * gda_string_to_binary (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *str</code></em>);</pre>
<p>
Performs the reverse of <a class="link" href="libgda-4.0-Gda-Value.html#gda-binary-to-string" title="gda_binary_to_string ()"><code class="function">gda_binary_to_string()</code></a> (note that for any "\xyz" succession
of 4 characters where "xyz" represents a valid octal value, the resulting read value will
be modulo 256)
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>str</code></em> :</span></p></td>
<td>a string to convert</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a new <a class="link" href="libgda-4.0-Gda-Value.html#GdaBinary"><span class="type">GdaBinary</span></a> if no error were found in <em class="parameter"><code>str</code></em>, or NULL otherwise. <span class="annotation">[<a href="http://foldoc.org/transfer%20full"><span class="acronym">transfer full</span></a>]</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="GdaBlob"></a><h3>GdaBlob</h3>
<pre class="programlisting">typedef struct {
GdaBinary data;
GdaBlobOp *op;
} GdaBlob;
</pre>
<p>
Represents some binary data, accessed through a <a class="link" href="GdaBlobOp.html" title="Blobs"><span class="type">GdaBlobOp</span></a> object.
<em class="parameter"><code>op</code></em> is generally set up by database providers when giving access to an existing BLOB in
a database, but can be modified if needed using <a class="link" href="libgda-4.0-Gda-Value.html#gda-blob-set-op" title="gda_blob_set_op ()"><code class="function">gda_blob_set_op()</code></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><a class="link" href="libgda-4.0-Gda-Value.html#GdaBinary"><span class="type">GdaBinary</span></a> <em class="structfield"><code><a name="GdaBlob.data"></a>data</code></em>;</span></p></td>
<td>data buffer, as a <a class="link" href="libgda-4.0-Gda-Value.html#GdaBinary"><span class="type">GdaBinary</span></a>
</td>
</tr>
<tr>
<td><p><span class="term"><a class="link" href="GdaBlobOp.html" title="Blobs"><span class="type">GdaBlobOp</span></a> *<em class="structfield"><code><a name="GdaBlob.op"></a>op</code></em>;</span></p></td>
<td>a pointer to a <span class="type">GdaBlopOp</span>, or <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-value-new-blob"></a><h3>gda_value_new_blob ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="returnvalue">GValue</span></a> * gda_value_new_blob (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guchar"><span class="type">guchar</span></a> *val</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#glong"><span class="type">glong</span></a> size</code></em>);</pre>
<p>
Makes a new <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> of type <span class="type">GDA_TYPE_BLOB</span> with the data contained by <em class="parameter"><code>val</code></em>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>val</code></em> :</span></p></td>
<td>value to set for the new <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a>.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>size</code></em> :</span></p></td>
<td>the size of the memory pool pointer to by <em class="parameter"><code>val</code></em>.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the newly created <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a>.
Free-function: gda_value_free. <span class="annotation">[<a href="http://foldoc.org/transfer%20full"><span class="acronym">transfer full</span></a>]</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-value-new-blob-from-file"></a><h3>gda_value_new_blob_from_file ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="returnvalue">GValue</span></a> * gda_value_new_blob_from_file (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *filename</code></em>);</pre>
<p>
Makes a new <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> of type <span class="type">GDA_TYPE_BLOB</span> interfacing with the contents of the file
named <em class="parameter"><code>filename</code></em>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>filename</code></em> :</span></p></td>
<td>name of the file to manipulate</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the newly created <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a>.
Free-function: gda_value_free. <span class="annotation">[<a href="http://foldoc.org/transfer%20full"><span class="acronym">transfer full</span></a>]</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-blob-copy"></a><h3>gda_blob_copy ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="returnvalue">gpointer</span></a> gda_blob_copy (<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> boxed</code></em>);</pre>
<p>
Creates a new <a class="link" href="libgda-4.0-Gda-Value.html#GdaBlob" title="GdaBlob"><span class="type">GdaBlob</span></a> structure from an existing one.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>boxed</code></em> :</span></p></td>
<td>source to get a copy from.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a newly allocated <a class="link" href="libgda-4.0-Gda-Value.html#GdaBlob" title="GdaBlob"><span class="type">GdaBlob</span></a> which contains a copy of information in <em class="parameter"><code>boxed</code></em>.
Free-function: gda_blob_free. <span class="annotation">[<a href="http://foldoc.org/transfer%20full"><span class="acronym">transfer full</span></a>]</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-blob-free"></a><h3>gda_blob_free ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gda_blob_free (<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> boxed</code></em>);</pre>
<p>
Deallocates all memory associated to the given <a class="link" href="libgda-4.0-Gda-Value.html#GdaBlob" title="GdaBlob"><span class="type">GdaBlob</span></a>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>boxed</code></em> :</span></p></td>
<td>
<a class="link" href="libgda-4.0-Gda-Value.html#GdaBlob" title="GdaBlob"><span class="type">GdaBlob</span></a> to free. <span class="annotation">[<a href="http://foldoc.org/transfer%20full"><span class="acronym">transfer full</span></a>]</span>
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-value-get-blob"></a><h3>gda_value_get_blob ()</h3>
<pre class="programlisting">const <a class="link" href="libgda-4.0-Gda-Value.html#GdaBlob" title="GdaBlob"><span class="returnvalue">GdaBlob</span></a> * gda_value_get_blob (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);</pre>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td>
<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> whose value we want to get.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the value stored in <em class="parameter"><code>value</code></em>. <span class="annotation">[<a href="http://foldoc.org/transfer%20none"><span class="acronym">transfer none</span></a>]</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-value-set-blob"></a><h3>gda_value_set_blob ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gda_value_set_blob (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>,
<em class="parameter"><code>const <a class="link" href="libgda-4.0-Gda-Value.html#GdaBlob" title="GdaBlob"><span class="type">GdaBlob</span></a> *blob</code></em>);</pre>
<p>
Stores <em class="parameter"><code>val</code></em> into <em class="parameter"><code>value</code></em>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td>
<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> that will store <em class="parameter"><code>val</code></em>.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>blob</code></em> :</span></p></td>
<td>a <a class="link" href="libgda-4.0-Gda-Value.html#GdaBlob" title="GdaBlob"><span class="type">GdaBlob</span></a> structure with the data and its size to be stored in <em class="parameter"><code>value</code></em>.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-value-take-blob"></a><h3>gda_value_take_blob ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gda_value_take_blob (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>,
<em class="parameter"><code><a class="link" href="libgda-4.0-Gda-Value.html#GdaBlob" title="GdaBlob"><span class="type">GdaBlob</span></a> *blob</code></em>);</pre>
<p>
Stores <em class="parameter"><code>val</code></em> into <em class="parameter"><code>value</code></em>, but on the contrary to <a class="link" href="libgda-4.0-Gda-Value.html#gda-value-set-blob" title="gda_value_set_blob ()"><code class="function">gda_value_set_blob()</code></a>, the <em class="parameter"><code>blob</code></em>
argument is not copied, but used as-is and it should be considered owned by <em class="parameter"><code>value</code></em>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td>
<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> that will store <em class="parameter"><code>val</code></em>.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>blob</code></em> :</span></p></td>
<td>a <a class="link" href="libgda-4.0-Gda-Value.html#GdaBlob" title="GdaBlob"><span class="type">GdaBlob</span></a> structure with the data and its size to be stored in <em class="parameter"><code>value</code></em>. <span class="annotation">[<a href="http://foldoc.org/transfer%20full"><span class="acronym">transfer full</span></a>]</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-blob-set-op"></a><h3>gda_blob_set_op ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gda_blob_set_op (<em class="parameter"><code><a class="link" href="libgda-4.0-Gda-Value.html#GdaBlob" title="GdaBlob"><span class="type">GdaBlob</span></a> *blob</code></em>,
<em class="parameter"><code><a class="link" href="GdaBlobOp.html" title="Blobs"><span class="type">GdaBlobOp</span></a> *op</code></em>);</pre>
<p>
correctly assigns <em class="parameter"><code>op</code></em> to <em class="parameter"><code>blob</code></em>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>blob</code></em> :</span></p></td>
<td>a <a class="link" href="libgda-4.0-Gda-Value.html#GdaBlob" title="GdaBlob"><span class="type">GdaBlob</span></a> value</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>op</code></em> :</span></p></td>
<td>a <a class="link" href="GdaBlobOp.html" title="Blobs"><span class="type">GdaBlobOp</span></a> object, or <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-blob-to-string"></a><h3>gda_blob_to_string ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> * gda_blob_to_string (<em class="parameter"><code><a class="link" href="libgda-4.0-Gda-Value.html#GdaBlob" title="GdaBlob"><span class="type">GdaBlob</span></a> *blob</code></em>,
<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> maxlen</code></em>);</pre>
<p>
Converts all the non printable characters of blob->data into the \xxx representation
where xxx is the octal representation of the byte, and the '\' (backslash) character
is converted to "\\".
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>blob</code></em> :</span></p></td>
<td>a correctly filled <em class="parameter"><code>GdaBlob</code></em> structure</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>maxlen</code></em> :</span></p></td>
<td>a maximum len used to truncate, or 0 for no maximum length</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a new string from <em class="parameter"><code>blob</code></em>. <span class="annotation">[<a href="http://foldoc.org/transfer%20full"><span class="acronym">transfer full</span></a>]</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="GdaGeometricPoint-struct"></a><h3>GdaGeometricPoint</h3>
<pre class="programlisting">typedef struct _GdaGeometricPoint GdaGeometricPoint;</pre>
<p>
</p>
</div>
<hr>
<div class="refsect2">
<a name="gda-geometricpoint-copy"></a><h3>gda_geometricpoint_copy ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="returnvalue">gpointer</span></a> gda_geometricpoint_copy (<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> boxed</code></em>);</pre>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>. <span class="annotation">[<a href="http://foldoc.org/transfer%20full"><span class="acronym">transfer full</span></a>]</span>
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-geometricpoint-free"></a><h3>gda_geometricpoint_free ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gda_geometricpoint_free (<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> boxed</code></em>);</pre>
<p>
</p>
</div>
<hr>
<div class="refsect2">
<a name="gda-value-get-geometric-point"></a><h3>gda_value_get_geometric_point ()</h3>
<pre class="programlisting">const <a class="link" href="libgda-4.0-Gda-Value.html#GdaGeometricPoint"><span class="returnvalue">GdaGeometricPoint</span></a> * gda_value_get_geometric_point (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);</pre>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td>
<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> whose value we want to get.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the value stored in <em class="parameter"><code>value</code></em>. <span class="annotation">[<a href="http://foldoc.org/transfer%20none"><span class="acronym">transfer none</span></a>]</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-value-set-geometric-point"></a><h3>gda_value_set_geometric_point ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gda_value_set_geometric_point (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>,
<em class="parameter"><code>const <a class="link" href="libgda-4.0-Gda-Value.html#GdaGeometricPoint"><span class="type">GdaGeometricPoint</span></a> *val</code></em>);</pre>
<p>
Stores <em class="parameter"><code>val</code></em> into <em class="parameter"><code>value</code></em>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td>
<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> that will store <em class="parameter"><code>val</code></em>.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>val</code></em> :</span></p></td>
<td>value to be stored in <em class="parameter"><code>value</code></em>.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="GdaValueList"></a><h3>GdaValueList</h3>
<pre class="programlisting">typedef GList GdaValueList;
</pre>
<p>
</p>
</div>
<hr>
<div class="refsect2">
<a name="gda-value-get-list"></a><h3>gda_value_get_list ()</h3>
<pre class="programlisting">const <a class="link" href="libgda-4.0-Gda-Value.html#GdaValueList"><span class="returnvalue">GdaValueList</span></a> * gda_value_get_list (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);</pre>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td>
<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> whose value we want to get.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the value stored in <em class="parameter"><code>value</code></em>. <span class="annotation">[<a href="http://foldoc.org/transfer%20none"><span class="acronym">transfer none</span></a>]</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-value-set-list"></a><h3>gda_value_set_list ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gda_value_set_list (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>,
<em class="parameter"><code>const <a class="link" href="libgda-4.0-Gda-Value.html#GdaValueList"><span class="type">GdaValueList</span></a> *val</code></em>);</pre>
<p>
Stores <em class="parameter"><code>val</code></em> into <em class="parameter"><code>value</code></em>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td>
<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> that will store <em class="parameter"><code>val</code></em>.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>val</code></em> :</span></p></td>
<td>value to be stored in <em class="parameter"><code>value</code></em>.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="GdaNumeric-struct"></a><h3>GdaNumeric</h3>
<pre class="programlisting">typedef struct _GdaNumeric GdaNumeric;</pre>
<p>
</p>
</div>
<hr>
<div class="refsect2">
<a name="gda-numeric-copy"></a><h3>gda_numeric_copy ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="returnvalue">gpointer</span></a> gda_numeric_copy (<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> boxed</code></em>);</pre>
<p>
Creates a new <a class="link" href="libgda-4.0-Gda-Value.html#GdaNumeric"><span class="type">GdaNumeric</span></a> structure from an existing one.
</p>
<div class="variablelist"><table border="0">
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<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>boxed</code></em> :</span></p></td>
<td>source to get a copy from.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a newly allocated <a class="link" href="libgda-4.0-Gda-Value.html#GdaNumeric"><span class="type">GdaNumeric</span></a> which contains a copy of information in <em class="parameter"><code>boxed</code></em>.
Free-function: gda_numeric_free. <span class="annotation">[<a href="http://foldoc.org/transfer%20full"><span class="acronym">transfer full</span></a>]</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-numeric-free"></a><h3>gda_numeric_free ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gda_numeric_free (<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> boxed</code></em>);</pre>
<p>
Deallocates all memory associated to the given <em class="parameter"><code>boxed</code></em>
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><em class="parameter"><code>boxed</code></em> :</span></p></td>
<td>a <a class="link" href="libgda-4.0-Gda-Value.html#GdaNumeric"><span class="type">GdaNumeric</span></a> pointer. <span class="annotation">[<a href="http://foldoc.org/transfer%20full"><span class="acronym">transfer full</span></a>]</span>
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-value-get-numeric"></a><h3>gda_value_get_numeric ()</h3>
<pre class="programlisting">const <a class="link" href="libgda-4.0-Gda-Value.html#GdaNumeric"><span class="returnvalue">GdaNumeric</span></a> * gda_value_get_numeric (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);</pre>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td>
<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> whose value we want to get.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the value stored in <em class="parameter"><code>value</code></em>. <span class="annotation">[<a href="http://foldoc.org/transfer%20none"><span class="acronym">transfer none</span></a>]</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-value-set-numeric"></a><h3>gda_value_set_numeric ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gda_value_set_numeric (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>,
<em class="parameter"><code>const <a class="link" href="libgda-4.0-Gda-Value.html#GdaNumeric"><span class="type">GdaNumeric</span></a> *val</code></em>);</pre>
<p>
Stores <em class="parameter"><code>val</code></em> into <em class="parameter"><code>value</code></em>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td>
<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> that will store <em class="parameter"><code>val</code></em>.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>val</code></em> :</span></p></td>
<td>value to be stored in <em class="parameter"><code>value</code></em>.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="GdaTime-struct"></a><h3>GdaTime</h3>
<pre class="programlisting">typedef struct _GdaTime GdaTime;</pre>
<p>
</p>
</div>
<hr>
<div class="refsect2">
<a name="gda-time-copy"></a><h3>gda_time_copy ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="returnvalue">gpointer</span></a> gda_time_copy (<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> boxed</code></em>);</pre>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>. <span class="annotation">[<a href="http://foldoc.org/transfer%20full"><span class="acronym">transfer full</span></a>]</span>
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-time-free"></a><h3>gda_time_free ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gda_time_free (<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> boxed</code></em>);</pre>
<p>
</p>
</div>
<hr>
<div class="refsect2">
<a name="gda-time-valid"></a><h3>gda_time_valid ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> gda_time_valid (<em class="parameter"><code>const <a class="link" href="libgda-4.0-Gda-Value.html#GdaTime"><span class="type">GdaTime</span></a> *time</code></em>);</pre>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>time</code></em> :</span></p></td>
<td>a <a class="link" href="libgda-4.0-Gda-Value.html#GdaTime"><span class="type">GdaTime</span></a> value to check if it is valid</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>
<a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><span class="type">TRUE</span></a> if <a class="link" href="libgda-4.0-Gda-Value.html#GdaTime"><span class="type">GdaTime</span></a> is valid; <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> otherwise.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 4.2</p>
</div>
<hr>
<div class="refsect2">
<a name="gda-value-get-time"></a><h3>gda_value_get_time ()</h3>
<pre class="programlisting">const <a class="link" href="libgda-4.0-Gda-Value.html#GdaTime"><span class="returnvalue">GdaTime</span></a> * gda_value_get_time (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);</pre>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td>
<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> whose value we want to get.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the value stored in <em class="parameter"><code>value</code></em>. <span class="annotation">[<a href="http://foldoc.org/transfer%20none"><span class="acronym">transfer none</span></a>]</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-value-set-time"></a><h3>gda_value_set_time ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gda_value_set_time (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>,
<em class="parameter"><code>const <a class="link" href="libgda-4.0-Gda-Value.html#GdaTime"><span class="type">GdaTime</span></a> *val</code></em>);</pre>
<p>
Stores <em class="parameter"><code>val</code></em> into <em class="parameter"><code>value</code></em>.
</p>
<div class="variablelist"><table border="0">
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<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td>
<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> that will store <em class="parameter"><code>val</code></em>.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>val</code></em> :</span></p></td>
<td>value to be stored in <em class="parameter"><code>value</code></em>.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="GdaTimestamp-struct"></a><h3>GdaTimestamp</h3>
<pre class="programlisting">typedef struct _GdaTimestamp GdaTimestamp;</pre>
<p>
</p>
</div>
<hr>
<div class="refsect2">
<a name="gda-timestamp-copy"></a><h3>gda_timestamp_copy ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="returnvalue">gpointer</span></a> gda_timestamp_copy (<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> boxed</code></em>);</pre>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody><tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>. <span class="annotation">[<a href="http://foldoc.org/transfer%20full"><span class="acronym">transfer full</span></a>]</span>
</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-timestamp-free"></a><h3>gda_timestamp_free ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gda_timestamp_free (<em class="parameter"><code><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> boxed</code></em>);</pre>
<p>
</p>
</div>
<hr>
<div class="refsect2">
<a name="gda-timestamp-valid"></a><h3>gda_timestamp_valid ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a> gda_timestamp_valid (<em class="parameter"><code>const <a class="link" href="libgda-4.0-Gda-Value.html#GdaTimestamp"><span class="type">GdaTimestamp</span></a> *timestamp</code></em>);</pre>
<div class="variablelist"><table border="0">
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<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>timestamp</code></em> :</span></p></td>
<td>a <a class="link" href="libgda-4.0-Gda-Value.html#GdaTimestamp"><span class="type">GdaTimestamp</span></a> value to check if it is valid</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>
<a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#TRUE:CAPS"><span class="type">TRUE</span></a> if <a class="link" href="libgda-4.0-Gda-Value.html#GdaTimestamp"><span class="type">GdaTimestamp</span></a> is valid; <a href="http://library.gnome.org/devel/glib/unstable/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> otherwise.</td>
</tr>
</tbody>
</table></div>
<p class="since">Since 4.2</p>
</div>
<hr>
<div class="refsect2">
<a name="gda-value-get-timestamp"></a><h3>gda_value_get_timestamp ()</h3>
<pre class="programlisting">const <a class="link" href="libgda-4.0-Gda-Value.html#GdaTimestamp"><span class="returnvalue">GdaTimestamp</span></a> * gda_value_get_timestamp (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);</pre>
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<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td>
<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> whose value we want to get.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the value stored in <em class="parameter"><code>value</code></em>. <span class="annotation">[<a href="http://foldoc.org/transfer%20none"><span class="acronym">transfer none</span></a>]</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-value-set-timestamp"></a><h3>gda_value_set_timestamp ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gda_value_set_timestamp (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>,
<em class="parameter"><code>const <a class="link" href="libgda-4.0-Gda-Value.html#GdaTimestamp"><span class="type">GdaTimestamp</span></a> *val</code></em>);</pre>
<p>
Stores <em class="parameter"><code>val</code></em> into <em class="parameter"><code>value</code></em>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td>
<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> that will store <em class="parameter"><code>val</code></em>.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>val</code></em> :</span></p></td>
<td>value to be stored in <em class="parameter"><code>value</code></em>.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-value-new-timestamp-from-timet"></a><h3>gda_value_new_timestamp_from_timet ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="returnvalue">GValue</span></a> * gda_value_new_timestamp_from_timet (<em class="parameter"><code><span class="type">time_t</span> val</code></em>);</pre>
<p>
Makes a new <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> of type <span class="type">GDA_TYPE_TIMESTAMP</span> with value <em class="parameter"><code>val</code></em>
(of type time_t).
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>val</code></em> :</span></p></td>
<td>value to set for the new <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a>.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the newly created <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a>.
Free-function: gda_value_free. <span class="annotation">[<a href="http://foldoc.org/transfer%20full"><span class="acronym">transfer full</span></a>]</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-value-get-short"></a><h3>gda_value_get_short ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gshort"><span class="returnvalue">gshort</span></a> gda_value_get_short (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);</pre>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td>
<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> whose value we want to get.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the value stored in <em class="parameter"><code>value</code></em>.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-value-set-short"></a><h3>gda_value_set_short ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gda_value_set_short (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>,
<em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gshort"><span class="type">gshort</span></a> val</code></em>);</pre>
<p>
Stores <em class="parameter"><code>val</code></em> into <em class="parameter"><code>value</code></em>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td>
<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> that will store <em class="parameter"><code>val</code></em>.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>val</code></em> :</span></p></td>
<td>value to be stored in <em class="parameter"><code>value</code></em>.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-value-get-ushort"></a><h3>gda_value_get_ushort ()</h3>
<pre class="programlisting"><a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gushort"><span class="returnvalue">gushort</span></a> gda_value_get_ushort (<em class="parameter"><code>const <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>);</pre>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td>
<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> whose value we want to get.</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>the value stored in <em class="parameter"><code>value</code></em>.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="gda-value-set-ushort"></a><h3>gda_value_set_ushort ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> gda_value_set_ushort (<em class="parameter"><code><a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> *value</code></em>,
<em class="parameter"><code>const <a href="http://library.gnome.org/devel/glib/unstable/glib-Basic-Types.html#gushort"><span class="type">gushort</span></a> val</code></em>);</pre>
<p>
Stores <em class="parameter"><code>val</code></em> into <em class="parameter"><code>value</code></em>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
<tr>
<td><p><span class="term"><em class="parameter"><code>value</code></em> :</span></p></td>
<td>a <a href="http://library.gnome.org/devel/gobject/unstable/gobject-Generic-values.html#GValue"><span class="type">GValue</span></a> that will store <em class="parameter"><code>val</code></em>.</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>val</code></em> :</span></p></td>
<td>value to be stored in <em class="parameter"><code>value</code></em>.</td>
</tr>
</tbody>
</table></div>
</div>
</div>
<div class="refsect1">
<a name="libgda-4.0-Gda-Value.see-also"></a><h2>See Also</h2>
<p>
The <a class="link" href="GdaBlobOp.html" title="Blobs"><span class="type">GdaBlobOp</span></a> object which operates on blobs
</p>
</div>
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