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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<title>RhythmDBQueryResults: Rhythmbox Development Reference Manual</title>
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<a href="#" class="shortcut">Top</a><span id="nav_description">  <span class="dim">|</span> 
                  <a href="#RhythmDBQueryResults.description" class="shortcut">Description</a></span><span id="nav_hierarchy">  <span class="dim">|</span> 
                  <a href="#RhythmDBQueryResults.object-hierarchy" class="shortcut">Object Hierarchy</a></span><span id="nav_implementations">  <span class="dim">|</span> 
                  <a href="#RhythmDBQueryResults.implementations" class="shortcut">Known Implementations</a></span>
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<div class="refentry">
<a name="RhythmDBQueryResults"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="RhythmDBQueryResults.top_of_page"></a>RhythmDBQueryResults</span></h2>
<p>RhythmDBQueryResults — interface for receiving query results from RhythmDB</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="RhythmDBQueryResults.functions"></a><h2>Functions</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="RhythmDBQueryResults.html#rhythmdb-query-results-set-query" title="rhythmdb_query_results_set_query ()">rhythmdb_query_results_set_query</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="RhythmDBQueryResults.html#rhythmdb-query-results-add-results" title="rhythmdb_query_results_add_results ()">rhythmdb_query_results_add_results</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<span class="returnvalue">void</span>
</td>
<td class="function_name">
<a class="link" href="RhythmDBQueryResults.html#rhythmdb-query-results-query-complete" title="rhythmdb_query_results_query_complete ()">rhythmdb_query_results_query_complete</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="RhythmDBQueryResults.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="name">
<col class="description">
</colgroup>
<tbody>
<tr>
<td class="datatype_keyword"> </td>
<td class="function_name"><a class="link" href="RhythmDBQueryResults.html#RhythmDBQueryResults-struct" title="RhythmDBQueryResults">RhythmDBQueryResults</a></td>
</tr>
<tr>
<td class="datatype_keyword">struct</td>
<td class="function_name"><a class="link" href="RhythmDBQueryResults.html#RhythmDBQueryResultsIface" title="struct RhythmDBQueryResultsIface">RhythmDBQueryResultsIface</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="RhythmDBQueryResults.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen">    <a href="/usr/share/gtk-doc/html/gobject/GTypeModule.html">GInterface</a>
    <span class="lineart">╰──</span> RhythmDBQueryResults
</pre>
</div>
<div class="refsect1">
<a name="RhythmDBQueryResults.implementations"></a><h2>Known Implementations</h2>
<p>
RhythmDBQueryResults is implemented by
 <a class="link" href="RhythmDBQueryModel.html" title="RhythmDBQueryModel">RhythmDBQueryModel</a>.</p>
</div>
<div class="refsect1">
<a name="RhythmDBQueryResults.description"></a><h2>Description</h2>
<p>This is the interface that <a class="link" href="RhythmDB.html" title="RhythmDB"><span class="type">RhythmDB</span></a> uses to report results of database
queries.  When running a query, it first calls rhythmdb_query_results_set_query,
then passes entries matching the query to rhythmdb_query_results_add_results
in batches, and finally calls rhythmdb_query_results_query_complete.
There are no guarantees as to which threads the calls are made from.</p>
</div>
<div class="refsect1">
<a name="RhythmDBQueryResults.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="rhythmdb-query-results-set-query"></a><h3>rhythmdb_query_results_set_query ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
rhythmdb_query_results_set_query (<em class="parameter"><code><a class="link" href="RhythmDBQueryResults.html" title="RhythmDBQueryResults"><span class="type">RhythmDBQueryResults</span></a> *results</code></em>,
                                  <em class="parameter"><code><a href="../glib/glib-Pointer-Arrays.html#GPtrArray"><span class="type">GPtrArray</span></a> *query</code></em>);</pre>
<p>When a new query is run, this method is invoked to give the
object implementing this interface a chance to take a copy of the
query criteria, so that it can evaluate the query for newly added
or changed entries once the query is complete.</p>
<p><span class="annotation">[<a href="http://foldoc.org/skip"><span class="acronym">skip</span></a>]</span></p>
<div class="refsect3">
<a name="rhythmdb-query-results-set-query.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>results</p></td>
<td class="parameter_description"><p>the <a class="link" href="RhythmDBQueryResults.html" title="RhythmDBQueryResults"><span class="type">RhythmDBQueryResults</span></a> implementation</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>query</p></td>
<td class="parameter_description"><p>the new query</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="rhythmdb-query-results-add-results"></a><h3>rhythmdb_query_results_add_results ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
rhythmdb_query_results_add_results (<em class="parameter"><code><a class="link" href="RhythmDBQueryResults.html" title="RhythmDBQueryResults"><span class="type">RhythmDBQueryResults</span></a> *results</code></em>,
                                    <em class="parameter"><code><a href="../glib/glib-Pointer-Arrays.html#GPtrArray"><span class="type">GPtrArray</span></a> *entries</code></em>);</pre>
<p>Provides a new set of query results.  References must be taken on the
entries.</p>
<div class="refsect3">
<a name="rhythmdb-query-results-add-results.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody>
<tr>
<td class="parameter_name"><p>results</p></td>
<td class="parameter_description"><p>the <a class="link" href="RhythmDBQueryResults.html" title="RhythmDBQueryResults"><span class="type">RhythmDBQueryResults</span></a> implementation</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>entries</p></td>
<td class="parameter_description"><p><a href="../glib/glib-Pointer-Arrays.html#GPtrArray"><span class="type">GPtrArray</span></a> containing <span class="type">RhythmDBEntry</span> results. </p></td>
<td class="parameter_annotations"><span class="annotation">[<a href="http://foldoc.org/element-type"><span class="acronym">element-type</span></a> RB.RhythmDBEntry]</span></td>
</tr>
</tbody>
</table></div>
</div>
</div>
<hr>
<div class="refsect2">
<a name="rhythmdb-query-results-query-complete"></a><h3>rhythmdb_query_results_query_complete ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
rhythmdb_query_results_query_complete (<em class="parameter"><code><a class="link" href="RhythmDBQueryResults.html" title="RhythmDBQueryResults"><span class="type">RhythmDBQueryResults</span></a> *results</code></em>);</pre>
<p>Called when the query is complete and all entries that match the query
have been supplied to rhythmdb_query_results_add_results.  If the object
implementing this interface needs to identify newly added or changed entries
that match the query, it needs to use the entry-added, entry-deleted and
entry-changed signals from <a class="link" href="RhythmDB.html" title="RhythmDB"><span class="type">RhythmDB</span></a>.</p>
<div class="refsect3">
<a name="rhythmdb-query-results-query-complete.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" class="parameters_annotations">
</colgroup>
<tbody><tr>
<td class="parameter_name"><p>results</p></td>
<td class="parameter_description"><p>the <a class="link" href="RhythmDBQueryResults.html" title="RhythmDBQueryResults"><span class="type">RhythmDBQueryResults</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
</div>
</div>
<div class="refsect1">
<a name="RhythmDBQueryResults.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="RhythmDBQueryResults-struct"></a><h3>RhythmDBQueryResults</h3>
<pre class="programlisting">typedef struct _RhythmDBQueryResults RhythmDBQueryResults;</pre>
</div>
<hr>
<div class="refsect2">
<a name="RhythmDBQueryResultsIface"></a><h3>struct RhythmDBQueryResultsIface</h3>
<pre class="programlisting">struct RhythmDBQueryResultsIface {
	GTypeInterface g_iface;

	/* vtable */
	void (*set_query)		(RhythmDBQueryResults *results,
				 	 GPtrArray *query);

	void (*add_results)		(RhythmDBQueryResults *results,
				 	 GPtrArray *entries);

	void 	(*query_complete) (RhythmDBQueryResults *results);
};
</pre>
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