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<a name="dee-1.0-DeeResultSet"></a><div class="titlepage"></div>
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<h2><span class="refentrytitle"><a name="dee-1.0-DeeResultSet.top_of_page"></a>DeeResultSet</span></h2>
<p>DeeResultSet — Cursor-like interface for results sets</p>
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<div class="refsynopsisdiv">
<a name="dee-1.0-DeeResultSet.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis">
#include <dee.h>
struct <a class="link" href="dee-1.0-DeeResultSet.html#DeeResultSetIface" title="struct DeeResultSetIface">DeeResultSetIface</a>;
<span class="returnvalue">DeeModel</span> * <a class="link" href="dee-1.0-DeeResultSet.html#dee-result-set-get-model" title="dee_result_set_get_model ()">dee_result_set_get_model</a> (<em class="parameter"><code><span class="type">DeeResultSet</span> *self</code></em>);
<span class="returnvalue">guint</span> <a class="link" href="dee-1.0-DeeResultSet.html#dee-result-set-get-n-rows" title="dee_result_set_get_n_rows ()">dee_result_set_get_n_rows</a> (<em class="parameter"><code><span class="type">DeeResultSet</span> *self</code></em>);
<span class="returnvalue">gboolean</span> <a class="link" href="dee-1.0-DeeResultSet.html#dee-result-set-has-next" title="dee_result_set_has_next ()">dee_result_set_has_next</a> (<em class="parameter"><code><span class="type">DeeResultSet</span> *self</code></em>);
<a class="link" href="dee-1.0-DeeModel.html#DeeModelIter"><span class="returnvalue">DeeModelIter</span></a> * <a class="link" href="dee-1.0-DeeResultSet.html#dee-result-set-next" title="dee_result_set_next ()">dee_result_set_next</a> (<em class="parameter"><code><span class="type">DeeResultSet</span> *self</code></em>);
<a class="link" href="dee-1.0-DeeModel.html#DeeModelIter"><span class="returnvalue">DeeModelIter</span></a> * <a class="link" href="dee-1.0-DeeResultSet.html#dee-result-set-peek" title="dee_result_set_peek ()">dee_result_set_peek</a> (<em class="parameter"><code><span class="type">DeeResultSet</span> *self</code></em>);
<span class="returnvalue">void</span> <a class="link" href="dee-1.0-DeeResultSet.html#dee-result-set-seek" title="dee_result_set_seek ()">dee_result_set_seek</a> (<em class="parameter"><code><span class="type">DeeResultSet</span> *self</code></em>,
<em class="parameter"><code><span class="type">guint</span> pos</code></em>);
<span class="returnvalue">guint</span> <a class="link" href="dee-1.0-DeeResultSet.html#dee-result-set-tell" title="dee_result_set_tell ()">dee_result_set_tell</a> (<em class="parameter"><code><span class="type">DeeResultSet</span> *self</code></em>);
</pre>
</div>
<div class="refsect1">
<a name="dee-1.0-DeeResultSet.description"></a><h2>Description</h2>
<p>
Interface for results returned by <a class="link" href="DeeIndex.html#dee-index-lookup" title="dee_index_lookup ()"><code class="function">dee_index_lookup()</code></a>.
</p>
<p>
This interface utilizes a cursor-like metaphor. You advance the cursor
by calling <a class="link" href="dee-1.0-DeeResultSet.html#dee-result-set-next" title="dee_result_set_next ()"><code class="function">dee_result_set_next()</code></a> or adjust it manually by calling
<a class="link" href="dee-1.0-DeeResultSet.html#dee-result-set-seek" title="dee_result_set_seek ()"><code class="function">dee_result_set_seek()</code></a>.
</p>
<p>
Calling <a class="link" href="dee-1.0-DeeResultSet.html#dee-result-set-next" title="dee_result_set_next ()"><code class="function">dee_result_set_next()</code></a> will also return the row at the
current cursor position. You may retrieve the current row without advancing
the cursor by calling <a class="link" href="dee-1.0-DeeResultSet.html#dee-result-set-peek" title="dee_result_set_peek ()"><code class="function">dee_result_set_peek()</code></a>.
</p>
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<div class="refsect1">
<a name="dee-1.0-DeeResultSet.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="DeeResultSetIface"></a><h3>struct DeeResultSetIface</h3>
<pre class="programlisting">struct DeeResultSetIface {
GTypeInterface g_iface;
guint (*get_n_rows) (DeeResultSet *self);
DeeModelIter* (*next) (DeeResultSet *self);
gboolean (*has_next) (DeeResultSet *self);
DeeModelIter* (*peek) (DeeResultSet *self);
void (*seek) (DeeResultSet *self,
guint pos);
guint (*tell) (DeeResultSet *self);
DeeModel* (*get_model) (DeeResultSet *self);
};
</pre>
<p>
</p>
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<hr>
<div class="refsect2">
<a name="dee-result-set-get-model"></a><h3>dee_result_set_get_model ()</h3>
<pre class="programlisting"><span class="returnvalue">DeeModel</span> * dee_result_set_get_model (<em class="parameter"><code><span class="type">DeeResultSet</span> *self</code></em>);</pre>
<p>
Get the model associated with a result set
</p>
<div class="variablelist"><table border="0">
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<td><p><span class="term"><em class="parameter"><code>self</code></em> :</span></p></td>
<td>The <span class="type">DeeResultSet</span> to get the mode for</td>
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<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The model that the rows point into. <span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span>
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<div class="refsect2">
<a name="dee-result-set-get-n-rows"></a><h3>dee_result_set_get_n_rows ()</h3>
<pre class="programlisting"><span class="returnvalue">guint</span> dee_result_set_get_n_rows (<em class="parameter"><code><span class="type">DeeResultSet</span> *self</code></em>);</pre>
<p>
Get the number of <a class="link" href="dee-1.0-DeeModel.html#DeeModelIter"><span class="type">DeeModelIter</span></a>s held in a <span class="type">DeeResultSet</span>.
</p>
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<td><p><span class="term"><em class="parameter"><code>self</code></em> :</span></p></td>
<td>The <span class="type">DeeResultSet</span> to get the size of</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The number of rows held in the result set</td>
</tr>
</tbody>
</table></div>
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<hr>
<div class="refsect2">
<a name="dee-result-set-has-next"></a><h3>dee_result_set_has_next ()</h3>
<pre class="programlisting"><span class="returnvalue">gboolean</span> dee_result_set_has_next (<em class="parameter"><code><span class="type">DeeResultSet</span> *self</code></em>);</pre>
<p>
Check if a call to <a class="link" href="dee-1.0-DeeResultSet.html#dee-result-set-next" title="dee_result_set_next ()"><code class="function">dee_result_set_next()</code></a> will succeed.
</p>
<div class="variablelist"><table border="0">
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<td><p><span class="term"><em class="parameter"><code>self</code></em> :</span></p></td>
<td>The <span class="type">DeeResultSet</span> to check</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>
<code class="literal">TRUE</code> if and only if more rows can be retrieved by calling
<a class="link" href="dee-1.0-DeeResultSet.html#dee-result-set-next" title="dee_result_set_next ()"><code class="function">dee_result_set_next()</code></a>
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<div class="refsect2">
<a name="dee-result-set-next"></a><h3>dee_result_set_next ()</h3>
<pre class="programlisting"><a class="link" href="dee-1.0-DeeModel.html#DeeModelIter"><span class="returnvalue">DeeModelIter</span></a> * dee_result_set_next (<em class="parameter"><code><span class="type">DeeResultSet</span> *self</code></em>);</pre>
<p>
Get the current row from the result set and advance the cursor.
To ensure that calls to this method will succeed you can call
<a class="link" href="dee-1.0-DeeResultSet.html#dee-result-set-has-next" title="dee_result_set_has_next ()"><code class="function">dee_result_set_has_next()</code></a>.
</p>
<p>
To retrieve the current row without advancing the cursor call
<a class="link" href="dee-1.0-DeeResultSet.html#dee-result-set-peek" title="dee_result_set_peek ()"><code class="function">dee_result_set_peek()</code></a> in stead of this method.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
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<td><p><span class="term"><em class="parameter"><code>self</code></em> :</span></p></td>
<td>The <span class="type">DeeResultSet</span> to get a row from</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The <a class="link" href="dee-1.0-DeeModel.html#DeeModelIter"><span class="type">DeeModelIter</span></a> at the current cursor position. <span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span>
</td>
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</tbody>
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<hr>
<div class="refsect2">
<a name="dee-result-set-peek"></a><h3>dee_result_set_peek ()</h3>
<pre class="programlisting"><a class="link" href="dee-1.0-DeeModel.html#DeeModelIter"><span class="returnvalue">DeeModelIter</span></a> * dee_result_set_peek (<em class="parameter"><code><span class="type">DeeResultSet</span> *self</code></em>);</pre>
<p>
Get the row at the current cursor position.
</p>
<p>
To retrieve the current row and advance the cursor position call
<a class="link" href="dee-1.0-DeeResultSet.html#dee-result-set-next" title="dee_result_set_next ()"><code class="function">dee_result_set_next()</code></a> in stead of this method.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
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<td><p><span class="term"><em class="parameter"><code>self</code></em> :</span></p></td>
<td>The <span class="type">DeeResultSet</span> to get a row from</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The <a class="link" href="dee-1.0-DeeModel.html#DeeModelIter"><span class="type">DeeModelIter</span></a> at the current cursor position. <span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="dee-result-set-seek"></a><h3>dee_result_set_seek ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> dee_result_set_seek (<em class="parameter"><code><span class="type">DeeResultSet</span> *self</code></em>,
<em class="parameter"><code><span class="type">guint</span> pos</code></em>);</pre>
<p>
Set the cursor position. Following calls to <a class="link" href="dee-1.0-DeeResultSet.html#dee-result-set-peek" title="dee_result_set_peek ()"><code class="function">dee_result_set_peek()</code></a>
or <a class="link" href="dee-1.0-DeeResultSet.html#dee-result-set-next" title="dee_result_set_next ()"><code class="function">dee_result_set_next()</code></a> will read the row at position <em class="parameter"><code>pos</code></em>.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
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<td><p><span class="term"><em class="parameter"><code>self</code></em> :</span></p></td>
<td>The <span class="type">DeeResultSet</span> to seek in</td>
</tr>
<tr>
<td><p><span class="term"><em class="parameter"><code>pos</code></em> :</span></p></td>
<td>The position to seek to</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2">
<a name="dee-result-set-tell"></a><h3>dee_result_set_tell ()</h3>
<pre class="programlisting"><span class="returnvalue">guint</span> dee_result_set_tell (<em class="parameter"><code><span class="type">DeeResultSet</span> *self</code></em>);</pre>
<p>
Get the current position of the cursor.
</p>
<div class="variablelist"><table border="0">
<col align="left" valign="top">
<tbody>
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<td><p><span class="term"><em class="parameter"><code>self</code></em> :</span></p></td>
<td>The <span class="type">DeeResultSet</span> to check the cursor position for</td>
</tr>
<tr>
<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>The current position of the cursor</td>
</tr>
</tbody>
</table></div>
</div>
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