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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>GData Reference Manual: GDataFreebaseService</title>
<meta name="generator" content="DocBook XSL Stylesheets V1.78.1">
<link rel="home" href="index.html" title="GData Reference Manual">
<link rel="up" href="ch19.html" title="Google Freebase API">
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<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
<table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="5"><tr valign="middle">
<td width="100%" align="left" class="shortcuts">
<a href="#" class="shortcut">Top</a><span id="nav_description">  <span class="dim">|</span> 
                  <a href="#GDataFreebaseService.description" class="shortcut">Description</a></span><span id="nav_hierarchy">  <span class="dim">|</span> 
                  <a href="#GDataFreebaseService.object-hierarchy" class="shortcut">Object Hierarchy</a></span><span id="nav_properties">  <span class="dim">|</span> 
                  <a href="#GDataFreebaseService.properties" class="shortcut">Properties</a></span>
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<td><a accesskey="h" href="index.html"><img src="home.png" width="16" height="16" border="0" alt="Home"></a></td>
<td><a accesskey="u" href="ch19.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td>
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</tr></table>
<div class="refentry">
<a name="GDataFreebaseService"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="GDataFreebaseService.top_of_page"></a>GDataFreebaseService</span></h2>
<p>GDataFreebaseService — GData Freebase service object</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="GDataFreebaseService.stability-level"></a><h2>Stability Level</h2>
<acronym title="Unstable interfaces are experimental or transitional. They are typically used to
give outside developers early access to new or rapidly changing technology, or
to provide an interim solution to a problem where a more general solution is
anticipated. No claims are made about either source or binary compatibility from
one minor release to the next.

The Unstable interface level is a warning that these interfaces are  subject to
change without warning and should not be used in unbundled products.

Given such caveats, customer impact need not be a factor when considering
incompatible changes to an Unstable interface in a major or minor release.
Nonetheless, when such changes are introduced, the changes should still be
mentioned in the release notes for the affected release.
"><span class="acronym">Unstable</span></acronym>, unless otherwise indicated
</div>
<div class="refsect1">
<a name="GDataFreebaseService.functions"></a><h2>Functions</h2>
<div class="informaltable"><table width="100%" border="0">
<colgroup>
<col width="150px" class="functions_return">
<col class="functions_name">
</colgroup>
<tbody>
<tr>
<td class="function_type">
<a class="link" href="GDataFreebaseService.html" title="GDataFreebaseService"><span class="returnvalue">GDataFreebaseService</span></a> *
</td>
<td class="function_name">
<a class="link" href="GDataFreebaseService.html#gdata-freebase-service-new" title="gdata_freebase_service_new ()">gdata_freebase_service_new</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GDataAuthorizationDomain.html" title="GDataAuthorizationDomain"><span class="returnvalue">GDataAuthorizationDomain</span></a> *
</td>
<td class="function_name">
<a class="link" href="GDataFreebaseService.html#gdata-freebase-service-get-primary-authorization-domain" title="gdata_freebase_service_get_primary_authorization_domain ()">gdata_freebase_service_get_primary_authorization_domain</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GDataFreebaseResult.html" title="GDataFreebaseResult"><span class="returnvalue">GDataFreebaseResult</span></a> *
</td>
<td class="function_name">
<a class="link" href="GDataFreebaseService.html#gdata-freebase-service-query" title="gdata_freebase_service_query ()">gdata_freebase_service_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="GDataFreebaseService.html#gdata-freebase-service-query-async" title="gdata_freebase_service_query_async ()">gdata_freebase_service_query_async</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GDataFreebaseTopicResult.html" title="GDataFreebaseTopicResult"><span class="returnvalue">GDataFreebaseTopicResult</span></a> *
</td>
<td class="function_name">
<a class="link" href="GDataFreebaseService.html#gdata-freebase-service-get-topic" title="gdata_freebase_service_get_topic ()">gdata_freebase_service_get_topic</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="GDataFreebaseService.html#gdata-freebase-service-get-topic-async" title="gdata_freebase_service_get_topic_async ()">gdata_freebase_service_get_topic_async</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a class="link" href="GDataFreebaseSearchResult.html" title="GDataFreebaseSearchResult"><span class="returnvalue">GDataFreebaseSearchResult</span></a> *
</td>
<td class="function_name">
<a class="link" href="GDataFreebaseService.html#gdata-freebase-service-search" title="gdata_freebase_service_search ()">gdata_freebase_service_search</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="GDataFreebaseService.html#gdata-freebase-service-search-async" title="gdata_freebase_service_search_async ()">gdata_freebase_service_search_async</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="https://developer.gnome.org/gio/unstable/GInputStream.html"><span class="returnvalue">GInputStream</span></a> *
</td>
<td class="function_name">
<a class="link" href="GDataFreebaseService.html#gdata-freebase-service-get-image" title="gdata_freebase_service_get_image ()">gdata_freebase_service_get_image</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="GDataFreebaseService.properties"></a><h2>Properties</h2>
<div class="informaltable"><table border="0">
<colgroup>
<col width="150px" class="properties_type">
<col width="300px" class="properties_name">
<col width="200px" class="properties_flags">
</colgroup>
<tbody><tr>
<td class="property_type">
<a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *</td>
<td class="property_name"><a class="link" href="GDataFreebaseService.html#GDataFreebaseService--developer-key" title="The “developer-key” property">developer-key</a></td>
<td class="property_flags">Read / Write / Construct Only</td>
</tr></tbody>
</table></div>
</div>
<div class="refsect1">
<a name="GDataFreebaseService.other"></a><h2>Types and Values</h2>
<div class="informaltable"><table 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="GDataFreebaseService.html#GDataFreebaseService-struct" title="GDataFreebaseService">GDataFreebaseService</a></td>
</tr>
<tr>
<td class="datatype_keyword"> </td>
<td class="function_name"><a class="link" href="GDataFreebaseService.html#GDataFreebaseServiceClass" title="GDataFreebaseServiceClass">GDataFreebaseServiceClass</a></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="GDataFreebaseService.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen">    <a href="https://developer.gnome.org/gobject/unstable/gobject-The-Base-Object-Type.html#GObject">GObject</a>
    <span class="lineart">╰──</span> <a class="link" href="GDataService.html" title="GDataService">GDataService</a>
        <span class="lineart">╰──</span> GDataFreebaseService
</pre>
</div>
<div class="refsect1">
<a name="GDataFreebaseService.includes"></a><h2>Includes</h2>
<pre class="synopsis">#include &lt;gdata/services/freebase/gdata-freebase-service.h&gt;
</pre>
</div>
<div class="refsect1">
<a name="GDataFreebaseService.description"></a><h2>Description</h2>
<p><a class="link" href="GDataFreebaseService.html" title="GDataFreebaseService"><span class="type">GDataFreebaseService</span></a> is a subclass of <a class="link" href="GDataService.html" title="GDataService"><span class="type">GDataService</span></a> for communicating with the Google Freebase API. It supports queries
in MQL format, that allows highly flexible queries on any topic. MQL is a JSON based query language, MQL requests consist
of a mix of defined and empty values for types in the Freebase schema, those "placeholder" values will be filled in on the
reply. For more information and examples, see the <a class="ulink" href="https://developers.google.com/freebase/v1/mql-overview" target="_top">
MQL overview page</a>.</p>
<p>For more details of Google Freebase API, see the <a class="ulink" href="https://developers.google.com/freebase/v1/" target="_top">
online documentation</a>.</p>
</div>
<div class="refsect1">
<a name="GDataFreebaseService.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="gdata-freebase-service-new"></a><h3>gdata_freebase_service_new ()</h3>
<pre class="programlisting"><a class="link" href="GDataFreebaseService.html" title="GDataFreebaseService"><span class="returnvalue">GDataFreebaseService</span></a> *
gdata_freebase_service_new (<em class="parameter"><code>const <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *developer_key</code></em>,
                            <em class="parameter"><code><a class="link" href="GDataAuthorizer.html" title="GDataAuthorizer"><span class="type">GDataAuthorizer</span></a> *authorizer</code></em>);</pre>
<p>Creates a new <a class="link" href="GDataFreebaseService.html" title="GDataFreebaseService"><span class="type">GDataFreebaseService</span></a> using the given <a class="link" href="GDataAuthorizer.html" title="GDataAuthorizer"><span class="type">GDataAuthorizer</span></a>. If <em class="parameter"><code>authorizer</code></em>
 is <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>, all requests are made as an unauthenticated user.
Having both <em class="parameter"><code>developer_key</code></em>
 and <em class="parameter"><code>authorizer</code></em>
 set to <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> is allowed, but this should be reserved for debugging situations, as there is a certain
key-less quota for those purposes. If this service is used on any code intended to be deployed, one or both of <em class="parameter"><code>developer_key</code></em>
 and <em class="parameter"><code>authorizer</code></em>

should be non-<a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a> and valid.</p>
<div class="refsect3">
<a name="id-1.5.8.2.10.2.5"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>developer_key</p></td>
<td class="parameter_description"><p> developer key to use the API, or <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>authorizer</p></td>
<td class="parameter_description"><p> a <a class="link" href="GDataAuthorizer.html" title="GDataAuthorizer"><span class="type">GDataAuthorizer</span></a> to authorize the service's requests, or <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.5.8.2.10.2.6"></a><h4>Returns</h4>
<p> a new <a class="link" href="GDataFreebaseService.html" title="GDataFreebaseService"><span class="type">GDataFreebaseService</span></a>; unref with <a href="https://developer.gnome.org/gobject/unstable/gobject-The-Base-Object-Type.html#g-object-unref"><code class="function">g_object_unref()</code></a>. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
<p class="since">Since 0.15.1</p>
</div>
<hr>
<div class="refsect2">
<a name="gdata-freebase-service-get-primary-authorization-domain"></a><h3>gdata_freebase_service_get_primary_authorization_domain ()</h3>
<pre class="programlisting"><a class="link" href="GDataAuthorizationDomain.html" title="GDataAuthorizationDomain"><span class="returnvalue">GDataAuthorizationDomain</span></a> *
gdata_freebase_service_get_primary_authorization_domain
                               (<em class="parameter"><code><span class="type">void</span></code></em>);</pre>
<p>The primary <a class="link" href="GDataAuthorizationDomain.html" title="GDataAuthorizationDomain"><span class="type">GDataAuthorizationDomain</span></a> for interacting with Freebase. This will not normally need to be used, as it's used internally
by the <a class="link" href="GDataFreebaseService.html" title="GDataFreebaseService"><span class="type">GDataFreebaseService</span></a> methods. However, if using the plain <a class="link" href="GDataService.html" title="GDataService"><span class="type">GDataService</span></a> methods to implement custom queries or requests which libgdata
does not support natively, then this domain may be needed to authorize the requests.</p>
<p>The domain never changes, and is interned so that pointer comparison can be used to differentiate it from other authorization domains.</p>
<div class="refsect3">
<a name="id-1.5.8.2.10.3.6"></a><h4>Returns</h4>
<p> the service's authorization domain. </p>
<p><span class="annotation">[<acronym title="Don't free data after the code is done."><span class="acronym">transfer none</span></acronym>]</span></p>
</div>
<p class="since">Since 0.9.0</p>
</div>
<hr>
<div class="refsect2">
<a name="gdata-freebase-service-query"></a><h3>gdata_freebase_service_query ()</h3>
<pre class="programlisting"><a class="link" href="GDataFreebaseResult.html" title="GDataFreebaseResult"><span class="returnvalue">GDataFreebaseResult</span></a> *
gdata_freebase_service_query (<em class="parameter"><code><a class="link" href="GDataFreebaseService.html" title="GDataFreebaseService"><span class="type">GDataFreebaseService</span></a> *self</code></em>,
                              <em class="parameter"><code><a class="link" href="GDataFreebaseQuery.html" title="GDataFreebaseQuery"><span class="type">GDataFreebaseQuery</span></a> *query</code></em>,
                              <em class="parameter"><code><a href="https://developer.gnome.org/gio/unstable/GCancellable.html"><span class="type">GCancellable</span></a> *cancellable</code></em>,
                              <em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>Performs a MQL query on the service, you can find out more about MQL in the <a class="ulink" href="http://mql.freebaseapps.com/index.html" target="_top">online MQL documentation</a>.</p>
<div class="refsect3">
<a name="id-1.5.8.2.10.4.5"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>self</p></td>
<td class="parameter_description"><p>a <a class="link" href="GDataFreebaseService.html" title="GDataFreebaseService"><span class="type">GDataFreebaseService</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>query</p></td>
<td class="parameter_description"><p>a <a class="link" href="GDataFreebaseQuery.html" title="GDataFreebaseQuery"><span class="type">GDataFreebaseQuery</span></a> with the MQL query</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>cancellable</p></td>
<td class="parameter_description"><p> optional <a href="https://developer.gnome.org/gio/unstable/GCancellable.html"><span class="type">GCancellable</span></a> object, or <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p> a <a href="https://developer.gnome.org/glib/unstable/glib-Error-Reporting.html#GError"><span class="type">GError</span></a>, or <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.5.8.2.10.4.6"></a><h4>Returns</h4>
<p> a <a class="link" href="GDataFreebaseResult.html" title="GDataFreebaseResult"><span class="type">GDataFreebaseResult</span></a> containing the query result; unref with <a href="https://developer.gnome.org/gobject/unstable/gobject-The-Base-Object-Type.html#g-object-unref"><code class="function">g_object_unref()</code></a>. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
<p class="since">Since 0.15.1</p>
</div>
<hr>
<div class="refsect2">
<a name="gdata-freebase-service-query-async"></a><h3>gdata_freebase_service_query_async ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gdata_freebase_service_query_async (<em class="parameter"><code><a class="link" href="GDataFreebaseService.html" title="GDataFreebaseService"><span class="type">GDataFreebaseService</span></a> *self</code></em>,
                                    <em class="parameter"><code><a class="link" href="GDataFreebaseQuery.html" title="GDataFreebaseQuery"><span class="type">GDataFreebaseQuery</span></a> *query</code></em>,
                                    <em class="parameter"><code><a href="https://developer.gnome.org/gio/unstable/GCancellable.html"><span class="type">GCancellable</span></a> *cancellable</code></em>,
                                    <em class="parameter"><code><a href="https://developer.gnome.org/gio/unstable/GAsyncResult.html#GAsyncReadyCallback"><span class="type">GAsyncReadyCallback</span></a> callback</code></em>,
                                    <em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>);</pre>
<p>Performs a MQL query on the service. <em class="parameter"><code>self</code></em>
 and <em class="parameter"><code>query</code></em>
 are all reffed when this function is called, so can safely
be unreffed after this function returns. When the query is replied, or fails, <em class="parameter"><code>callback</code></em>
 will be executed, and
the result can be obtained through <a class="link" href="GDataService.html#gdata-service-query-single-entry-finish" title="gdata_service_query_single_entry_finish ()"><code class="function">gdata_service_query_single_entry_finish()</code></a>.</p>
<p>For more details, see <a class="link" href="GDataFreebaseService.html#gdata-freebase-service-query" title="gdata_freebase_service_query ()"><code class="function">gdata_freebase_service_query()</code></a>, which is the synchronous version of
this function.</p>
<div class="refsect3">
<a name="id-1.5.8.2.10.5.6"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>self</p></td>
<td class="parameter_description"><p>a <a class="link" href="GDataFreebaseService.html" title="GDataFreebaseService"><span class="type">GDataFreebaseService</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>query</p></td>
<td class="parameter_description"><p>a <a class="link" href="GDataFreebaseQuery.html" title="GDataFreebaseQuery"><span class="type">GDataFreebaseQuery</span></a> with the MQL query</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>cancellable</p></td>
<td class="parameter_description"><p> optional <a href="https://developer.gnome.org/gio/unstable/GCancellable.html"><span class="type">GCancellable</span></a> object, or <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>callback</p></td>
<td class="parameter_description"><p>a <a href="https://developer.gnome.org/gio/unstable/GAsyncResult.html#GAsyncReadyCallback"><span class="type">GAsyncReadyCallback</span></a> to call when authentication is finished</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p> data to pass to the <em class="parameter"><code>callback</code></em>
function. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="This parameter is a 'user_data', for callbacks; many bindings can pass NULL here."><span class="acronym">closure</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 0.15.1</p>
</div>
<hr>
<div class="refsect2">
<a name="gdata-freebase-service-get-topic"></a><h3>gdata_freebase_service_get_topic ()</h3>
<pre class="programlisting"><a class="link" href="GDataFreebaseTopicResult.html" title="GDataFreebaseTopicResult"><span class="returnvalue">GDataFreebaseTopicResult</span></a> *
gdata_freebase_service_get_topic (<em class="parameter"><code><a class="link" href="GDataFreebaseService.html" title="GDataFreebaseService"><span class="type">GDataFreebaseService</span></a> *self</code></em>,
                                  <em class="parameter"><code><a class="link" href="GDataFreebaseTopicQuery.html" title="GDataFreebaseTopicQuery"><span class="type">GDataFreebaseTopicQuery</span></a> *query</code></em>,
                                  <em class="parameter"><code><a href="https://developer.gnome.org/gio/unstable/GCancellable.html"><span class="type">GCancellable</span></a> *cancellable</code></em>,
                                  <em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>Queries information about a topic, identified through a Freebase ID. You can find out more about topic queries in the</p>
<a class="ulink" href="https://developers.google.com/freebase/v1/topic-response" target="_top">online documentation</a>.
<div class="refsect3">
<a name="id-1.5.8.2.10.6.6"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>self</p></td>
<td class="parameter_description"><p>a <a class="link" href="GDataFreebaseService.html" title="GDataFreebaseService"><span class="type">GDataFreebaseService</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>query</p></td>
<td class="parameter_description"><p>a <a class="link" href="GDataFreebaseTopicQuery.html" title="GDataFreebaseTopicQuery"><span class="type">GDataFreebaseTopicQuery</span></a> containing the topic ID</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>cancellable</p></td>
<td class="parameter_description"><p> optional <a href="https://developer.gnome.org/gio/unstable/GCancellable.html"><span class="type">GCancellable</span></a> object, or <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p> a <a href="https://developer.gnome.org/glib/unstable/glib-Error-Reporting.html#GError"><span class="type">GError</span></a>, or <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.5.8.2.10.6.7"></a><h4>Returns</h4>
<p> a <a class="link" href="GDataFreebaseTopicResult.html" title="GDataFreebaseTopicResult"><span class="type">GDataFreebaseTopicResult</span></a> containing information about the topic; unref with <a href="https://developer.gnome.org/gobject/unstable/gobject-The-Base-Object-Type.html#g-object-unref"><code class="function">g_object_unref()</code></a>. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
<p class="since">Since 0.15.1</p>
</div>
<hr>
<div class="refsect2">
<a name="gdata-freebase-service-get-topic-async"></a><h3>gdata_freebase_service_get_topic_async ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gdata_freebase_service_get_topic_async
                               (<em class="parameter"><code><a class="link" href="GDataFreebaseService.html" title="GDataFreebaseService"><span class="type">GDataFreebaseService</span></a> *self</code></em>,
                                <em class="parameter"><code><a class="link" href="GDataFreebaseTopicQuery.html" title="GDataFreebaseTopicQuery"><span class="type">GDataFreebaseTopicQuery</span></a> *query</code></em>,
                                <em class="parameter"><code><a href="https://developer.gnome.org/gio/unstable/GCancellable.html"><span class="type">GCancellable</span></a> *cancellable</code></em>,
                                <em class="parameter"><code><a href="https://developer.gnome.org/gio/unstable/GAsyncResult.html#GAsyncReadyCallback"><span class="type">GAsyncReadyCallback</span></a> callback</code></em>,
                                <em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>);</pre>
<p>Queries information about a topic, identified through a Freebase ID. <em class="parameter"><code>self</code></em>
 and <em class="parameter"><code>query</code></em>
 are all reffed when this
function is called, so can safely be unreffed after this function returns. When the query is replied, or fails,
<em class="parameter"><code>callback</code></em>
 will be executed, and the result can be obtained through <a class="link" href="GDataService.html#gdata-service-query-single-entry-finish" title="gdata_service_query_single_entry_finish ()"><code class="function">gdata_service_query_single_entry_finish()</code></a>.</p>
<p>For more details, see <a class="link" href="GDataFreebaseService.html#gdata-freebase-service-get-topic" title="gdata_freebase_service_get_topic ()"><code class="function">gdata_freebase_service_get_topic()</code></a>, which is the synchronous version of
this function.</p>
<div class="refsect3">
<a name="id-1.5.8.2.10.7.6"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>self</p></td>
<td class="parameter_description"><p>a <a class="link" href="GDataFreebaseService.html" title="GDataFreebaseService"><span class="type">GDataFreebaseService</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>query</p></td>
<td class="parameter_description"><p>a <a class="link" href="GDataFreebaseQuery.html" title="GDataFreebaseQuery"><span class="type">GDataFreebaseQuery</span></a> with the MQL query</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>cancellable</p></td>
<td class="parameter_description"><p> optional <a href="https://developer.gnome.org/gio/unstable/GCancellable.html"><span class="type">GCancellable</span></a> object, or <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>callback</p></td>
<td class="parameter_description"><p>a <a href="https://developer.gnome.org/gio/unstable/GAsyncResult.html#GAsyncReadyCallback"><span class="type">GAsyncReadyCallback</span></a> to call when authentication is finished</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p> data to pass to the <em class="parameter"><code>callback</code></em>
function. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="This parameter is a 'user_data', for callbacks; many bindings can pass NULL here."><span class="acronym">closure</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 0.15.1</p>
</div>
<hr>
<div class="refsect2">
<a name="gdata-freebase-service-search"></a><h3>gdata_freebase_service_search ()</h3>
<pre class="programlisting"><a class="link" href="GDataFreebaseSearchResult.html" title="GDataFreebaseSearchResult"><span class="returnvalue">GDataFreebaseSearchResult</span></a> *
gdata_freebase_service_search (<em class="parameter"><code><a class="link" href="GDataFreebaseService.html" title="GDataFreebaseService"><span class="type">GDataFreebaseService</span></a> *self</code></em>,
                               <em class="parameter"><code><a class="link" href="GDataFreebaseSearchQuery.html" title="GDataFreebaseSearchQuery"><span class="type">GDataFreebaseSearchQuery</span></a> *query</code></em>,
                               <em class="parameter"><code><a href="https://developer.gnome.org/gio/unstable/GCancellable.html"><span class="type">GCancellable</span></a> *cancellable</code></em>,
                               <em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>Performs a search for any given search term, filters can be set on <em class="parameter"><code>query</code></em>
 to narrow down the results. The results returned
are ordered by relevance. You can find out more about topic queries in the</p>
<a class="ulink" href="https://developers.google.com/freebase/v1/search-cookbook" target="_top">online documentation</a>.
<div class="refsect3">
<a name="id-1.5.8.2.10.8.6"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>self</p></td>
<td class="parameter_description"><p>a <a class="link" href="GDataFreebaseService.html" title="GDataFreebaseService"><span class="type">GDataFreebaseService</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>query</p></td>
<td class="parameter_description"><p>a <a class="link" href="GDataFreebaseSearchQuery.html" title="GDataFreebaseSearchQuery"><span class="type">GDataFreebaseSearchQuery</span></a> containing the topic ID</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>cancellable</p></td>
<td class="parameter_description"><p> optional <a href="https://developer.gnome.org/gio/unstable/GCancellable.html"><span class="type">GCancellable</span></a> object, or <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p> a <a href="https://developer.gnome.org/glib/unstable/glib-Error-Reporting.html#GError"><span class="type">GError</span></a>, or <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.5.8.2.10.8.7"></a><h4>Returns</h4>
<p> a <a class="link" href="GDataFreebaseSearchResult.html" title="GDataFreebaseSearchResult"><span class="type">GDataFreebaseSearchResult</span></a> containing the results for the given search query; unref with <a href="https://developer.gnome.org/gobject/unstable/gobject-The-Base-Object-Type.html#g-object-unref"><code class="function">g_object_unref()</code></a>. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
<p class="since">Since 0.15.1</p>
</div>
<hr>
<div class="refsect2">
<a name="gdata-freebase-service-search-async"></a><h3>gdata_freebase_service_search_async ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
gdata_freebase_service_search_async (<em class="parameter"><code><a class="link" href="GDataFreebaseService.html" title="GDataFreebaseService"><span class="type">GDataFreebaseService</span></a> *self</code></em>,
                                     <em class="parameter"><code><a class="link" href="GDataFreebaseSearchQuery.html" title="GDataFreebaseSearchQuery"><span class="type">GDataFreebaseSearchQuery</span></a> *query</code></em>,
                                     <em class="parameter"><code><a href="https://developer.gnome.org/gio/unstable/GCancellable.html"><span class="type">GCancellable</span></a> *cancellable</code></em>,
                                     <em class="parameter"><code><a href="https://developer.gnome.org/gio/unstable/GAsyncResult.html#GAsyncReadyCallback"><span class="type">GAsyncReadyCallback</span></a> callback</code></em>,
                                     <em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>);</pre>
<p>Performs a search for any given search term. <em class="parameter"><code>self</code></em>
 and <em class="parameter"><code>query</code></em>
 are all reffed when this
function is called, so can safely be unreffed after this function returns.</p>
<p>For more details, see <a class="link" href="GDataFreebaseService.html#gdata-freebase-service-search" title="gdata_freebase_service_search ()"><code class="function">gdata_freebase_service_search()</code></a>, which is the synchronous version of
this function.</p>
<div class="refsect3">
<a name="id-1.5.8.2.10.9.6"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>self</p></td>
<td class="parameter_description"><p>a <a class="link" href="GDataFreebaseService.html" title="GDataFreebaseService"><span class="type">GDataFreebaseService</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>query</p></td>
<td class="parameter_description"><p>a <a class="link" href="GDataFreebaseQuery.html" title="GDataFreebaseQuery"><span class="type">GDataFreebaseQuery</span></a> with the MQL query</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>cancellable</p></td>
<td class="parameter_description"><p> optional <a href="https://developer.gnome.org/gio/unstable/GCancellable.html"><span class="type">GCancellable</span></a> object, or <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>callback</p></td>
<td class="parameter_description"><p>a <a href="https://developer.gnome.org/gio/unstable/GAsyncResult.html#GAsyncReadyCallback"><span class="type">GAsyncReadyCallback</span></a> to call when authentication is finished</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p> data to pass to the <em class="parameter"><code>callback</code></em>
function. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="This parameter is a 'user_data', for callbacks; many bindings can pass NULL here."><span class="acronym">closure</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 0.15.1</p>
</div>
<hr>
<div class="refsect2">
<a name="gdata-freebase-service-get-image"></a><h3>gdata_freebase_service_get_image ()</h3>
<pre class="programlisting"><a href="https://developer.gnome.org/gio/unstable/GInputStream.html"><span class="returnvalue">GInputStream</span></a> *
gdata_freebase_service_get_image (<em class="parameter"><code><a class="link" href="GDataFreebaseService.html" title="GDataFreebaseService"><span class="type">GDataFreebaseService</span></a> *self</code></em>,
                                  <em class="parameter"><code><a class="link" href="GDataFreebaseTopicResult.html#GDataFreebaseTopicValue"><span class="type">GDataFreebaseTopicValue</span></a> *value</code></em>,
                                  <em class="parameter"><code><a href="https://developer.gnome.org/gio/unstable/GCancellable.html"><span class="type">GCancellable</span></a> *cancellable</code></em>,
                                  <em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> max_width</code></em>,
                                  <em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#guint"><span class="type">guint</span></a> max_height</code></em>,
                                  <em class="parameter"><code><a href="https://developer.gnome.org/glib/unstable/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>Creates an input stream to an image object returned in a topic query. If <em class="parameter"><code>max_width</code></em>
 and <em class="parameter"><code>max_height</code></em>

are unspecified (i.e. set to 0), the image returned will be the smallest available.</p>
<div class="refsect3">
<a name="id-1.5.8.2.10.10.5"></a><h4>Parameters</h4>
<div class="informaltable"><table 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>self</p></td>
<td class="parameter_description"><p>a <a class="link" href="GDataFreebaseService.html" title="GDataFreebaseService"><span class="type">GDataFreebaseService</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>value</p></td>
<td class="parameter_description"><p>a <a class="link" href="GDataFreebaseTopicResult.html#GDataFreebaseTopicValue"><span class="type">GDataFreebaseTopicValue</span></a> from a topic result</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>cancellable</p></td>
<td class="parameter_description"><p> optional <a href="https://developer.gnome.org/gio/unstable/GCancellable.html"><span class="type">GCancellable</span></a> object, or <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
<tr>
<td class="parameter_name"><p>max_width</p></td>
<td class="parameter_description"><p>maximum width of the image returned, or 0</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>max_height</p></td>
<td class="parameter_description"><p>maximum height of the image returned, or 0</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p> a <a href="https://developer.gnome.org/glib/unstable/glib-Error-Reporting.html#GError"><span class="type">GError</span></a>, or <a href="https://developer.gnome.org/glib/unstable/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>. </p></td>
<td class="parameter_annotations"><span class="annotation">[<acronym title="NULL is OK, both for passing and for returning."><span class="acronym">allow-none</span></acronym>]</span></td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.5.8.2.10.10.6"></a><h4>Returns</h4>
<p> a <a href="https://developer.gnome.org/gio/unstable/GInputStream.html"><span class="type">GInputStream</span></a> opened to the image; unref with <a href="https://developer.gnome.org/gobject/unstable/gobject-The-Base-Object-Type.html#g-object-unref"><code class="function">g_object_unref()</code></a>. </p>
<p><span class="annotation">[<acronym title="Free data after the code is done."><span class="acronym">transfer full</span></acronym>]</span></p>
</div>
<p class="since">Since 0.15.1</p>
</div>
</div>
<div class="refsect1">
<a name="GDataFreebaseService.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="GDataFreebaseService-struct"></a><h3>GDataFreebaseService</h3>
<pre class="programlisting">typedef struct _GDataFreebaseService GDataFreebaseService;</pre>
<p>All the fields in the <a class="link" href="GDataFreebaseService.html" title="GDataFreebaseService"><span class="type">GDataFreebaseService</span></a> structure are private and should never be accessed directly.</p>
<p class="since">Since 0.15.1</p>
</div>
<hr>
<div class="refsect2">
<a name="GDataFreebaseServiceClass"></a><h3>GDataFreebaseServiceClass</h3>
<pre class="programlisting">typedef struct {
} GDataFreebaseServiceClass;
</pre>
<p>All the fields in the <a class="link" href="GDataFreebaseService.html#GDataFreebaseServiceClass" title="GDataFreebaseServiceClass"><span class="type">GDataFreebaseServiceClass</span></a> structure are private and should never be accessed directly.</p>
<p class="since">Since 0.15.1</p>
</div>
</div>
<div class="refsect1">
<a name="GDataFreebaseService.property-details"></a><h2>Property Details</h2>
<div class="refsect2">
<a name="GDataFreebaseService--developer-key"></a><h3>The <code class="literal">“developer-key”</code> property</h3>
<pre class="programlisting">  “developer-key”            <a href="https://developer.gnome.org/glib/unstable/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *</pre>
<p>The developer key your application has registered with the Freebase API. For more information, see the <a class="ulink" href="https://developers.google.com/freebase/v1/how-tos/authorizing" target="_top">online documentation</a>.</p>
<p>Flags: Read / Write / Construct Only</p>
<p>Default value: NULL</p>
<p class="since">Since 0.15.1</p>
</div>
</div>
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