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<a href="#rasqal-section-prefix.description" class="shortcut">Description</a>
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<h2><span class="refentrytitle"><a name="rasqal-section-prefix.top_of_page"></a>Prefixes</span></h2>
<p>Prefixes — XML QName-style prefixes made from a URI and a short text prefix.</p>
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<a name="rasqal-section-prefix.synopsis"></a><h2>Synopsis</h2>
<pre class="synopsis"> <a class="link" href="rasqal-section-prefix.html#rasqal-prefix" title="rasqal_prefix">rasqal_prefix</a>;
<a class="link" href="rasqal-section-prefix.html#rasqal-prefix" title="rasqal_prefix"><span class="returnvalue">rasqal_prefix</span></a> * <a class="link" href="rasqal-section-prefix.html#rasqal-new-prefix" title="rasqal_new_prefix ()">rasqal_new_prefix</a> (<em class="parameter"><code><a class="link" href="rasqal-section-general.html#rasqal-world" title="rasqal_world"><span class="type">rasqal_world</span></a> *world</code></em>,
<em class="parameter"><code>const unsigned <span class="type">char</span> *prefix</code></em>,
<em class="parameter"><code><span class="type">raptor_uri</span> *uri</code></em>);
<span class="returnvalue">void</span> <a class="link" href="rasqal-section-prefix.html#rasqal-free-prefix" title="rasqal_free_prefix ()">rasqal_free_prefix</a> (<em class="parameter"><code><a class="link" href="rasqal-section-prefix.html#rasqal-prefix" title="rasqal_prefix"><span class="type">rasqal_prefix</span></a> *p</code></em>);
<span class="returnvalue">int</span> <a class="link" href="rasqal-section-prefix.html#rasqal-prefix-print" title="rasqal_prefix_print ()">rasqal_prefix_print</a> (<em class="parameter"><code><a class="link" href="rasqal-section-prefix.html#rasqal-prefix" title="rasqal_prefix"><span class="type">rasqal_prefix</span></a> *p</code></em>,
<em class="parameter"><code><span class="type">FILE</span> *fh</code></em>);
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<div class="refsect1">
<a name="rasqal-section-prefix.description"></a><h2>Description</h2>
<p>
Used inside a <a class="link" href="rasqal-section-query.html#rasqal-query" title="rasqal_query"><span class="type">rasqal_query</span></a> to declare syntax prefix abbreviations
for URIs. Once a <a class="link" href="rasqal-section-query.html#rasqal-query" title="rasqal_query"><span class="type">rasqal_query</span></a> is constructed, these are for information
only.
</p>
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<div class="refsect1">
<a name="rasqal-section-prefix.details"></a><h2>Details</h2>
<div class="refsect2">
<a name="rasqal-prefix"></a><h3>rasqal_prefix</h3>
<pre class="programlisting">typedef struct {
rasqal_world* world;
const char * prefix;
raptor_uri* uri;
int declared;
int depth;
} rasqal_prefix;
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<p>
Namespace (prefix, uri) pair.
</p>
<p>
Includes internal flags used for marking when prefixes are
declared and at what XML element depth when used in XML formats.
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<td><p><span class="term"><a class="link" href="rasqal-section-general.html#rasqal-world" title="rasqal_world"><span class="type">rasqal_world</span></a> *<em class="structfield"><code><a name="rasqal-prefix.world"></a>world</code></em>;</span></p></td>
<td>rasqal_world object</td>
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<td><p><span class="term">const <span class="type">char</span> *<em class="structfield"><code><a name="rasqal-prefix.prefix"></a>prefix</code></em>;</span></p></td>
<td>short prefix string</td>
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<td><p><span class="term"><span class="type">raptor_uri</span> *<em class="structfield"><code><a name="rasqal-prefix.uri"></a>uri</code></em>;</span></p></td>
<td>URI associated with the prefix.</td>
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<td><p><span class="term"><span class="type">int</span> <em class="structfield"><code><a name="rasqal-prefix.declared"></a>declared</code></em>;</span></p></td>
<td>Internal flag.</td>
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<td><p><span class="term"><span class="type">int</span> <em class="structfield"><code><a name="rasqal-prefix.depth"></a>depth</code></em>;</span></p></td>
<td>Internal flag.</td>
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<div class="refsect2">
<a name="rasqal-new-prefix"></a><h3>rasqal_new_prefix ()</h3>
<pre class="programlisting"><a class="link" href="rasqal-section-prefix.html#rasqal-prefix" title="rasqal_prefix"><span class="returnvalue">rasqal_prefix</span></a> * rasqal_new_prefix (<em class="parameter"><code><a class="link" href="rasqal-section-general.html#rasqal-world" title="rasqal_world"><span class="type">rasqal_world</span></a> *world</code></em>,
<em class="parameter"><code>const unsigned <span class="type">char</span> *prefix</code></em>,
<em class="parameter"><code><span class="type">raptor_uri</span> *uri</code></em>);</pre>
<p>
Constructor - create a new <a class="link" href="rasqal-section-prefix.html#rasqal-prefix" title="rasqal_prefix"><span class="type">rasqal_prefix</span></a>.
Takes ownership of prefix and uri.
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<td><p><span class="term"><em class="parameter"><code>world</code></em> :</span></p></td>
<td>rasqal_world object</td>
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<td><p><span class="term"><em class="parameter"><code>prefix</code></em> :</span></p></td>
<td>Short prefix string to stand for URI (or NULL)</td>
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<td><p><span class="term"><em class="parameter"><code>uri</code></em> :</span></p></td>
<td>Name <span class="type">raptor_uri</span>.</td>
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<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>a new <a class="link" href="rasqal-section-prefix.html#rasqal-prefix" title="rasqal_prefix"><span class="type">rasqal_prefix</span></a> or NULL on failure.</td>
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<div class="refsect2">
<a name="rasqal-free-prefix"></a><h3>rasqal_free_prefix ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span> rasqal_free_prefix (<em class="parameter"><code><a class="link" href="rasqal-section-prefix.html#rasqal-prefix" title="rasqal_prefix"><span class="type">rasqal_prefix</span></a> *p</code></em>);</pre>
<p>
Destructor - destroy a <a class="link" href="rasqal-section-prefix.html#rasqal-prefix" title="rasqal_prefix"><span class="type">rasqal_prefix</span></a> object.
</p>
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<td><p><span class="term"><em class="parameter"><code>p</code></em> :</span></p></td>
<td>
<a class="link" href="rasqal-section-prefix.html#rasqal-prefix" title="rasqal_prefix"><span class="type">rasqal_prefix</span></a> object.</td>
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<div class="refsect2">
<a name="rasqal-prefix-print"></a><h3>rasqal_prefix_print ()</h3>
<pre class="programlisting"><span class="returnvalue">int</span> rasqal_prefix_print (<em class="parameter"><code><a class="link" href="rasqal-section-prefix.html#rasqal-prefix" title="rasqal_prefix"><span class="type">rasqal_prefix</span></a> *p</code></em>,
<em class="parameter"><code><span class="type">FILE</span> *fh</code></em>);</pre>
<p>
Print a Rasqal prefix in a debug format.
</p>
<p>
The print debug format may change in any release.
</p>
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<td><p><span class="term"><em class="parameter"><code>p</code></em> :</span></p></td>
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<a class="link" href="rasqal-section-prefix.html#rasqal-prefix" title="rasqal_prefix"><span class="type">rasqal_prefix</span></a> object.</td>
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<td><p><span class="term"><em class="parameter"><code>fh</code></em> :</span></p></td>
<td>The FILE* handle to print to.</td>
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<td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td>
<td>non-0 on failure</td>
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