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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>Evolution-Data-Server Manual: Backend Utilities (libebackend): ECollectionBackend</title>
<meta name="generator" content="DocBook XSL Stylesheets V1.78.1">
<link rel="home" href="index.html" title="Evolution-Data-Server Manual: Backend Utilities (libebackend)">
<link rel="up" href="ch02.html" title="Registry Service Classes">
<link rel="prev" href="EAuthenticationSession.html" title="EAuthenticationSession">
<link rel="next" href="ECollectionBackendFactory.html" title="ECollectionBackendFactory">
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</head>
<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF">
<table class="navigation" id="top" width="100%" summary="Navigation header" cellpadding="2" cellspacing="10"><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="#ECollectionBackend.description" class="shortcut">Description</a></span><span id="nav_hierarchy"> <span class="dim">|</span> 
                  <a href="#ECollectionBackend.object-hierarchy" class="shortcut">Object Hierarchy</a></span><span id="nav_properties"> <span class="dim">|</span> 
                  <a href="#ECollectionBackend.properties" class="shortcut">Properties</a></span><span id="nav_signals"> <span class="dim">|</span> 
                  <a href="#ECollectionBackend.signals" class="shortcut">Signals</a></span>
</td>
<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="ch02.html"><img src="up.png" width="16" height="16" border="0" alt="Up"></a></td>
<td><a accesskey="p" href="EAuthenticationSession.html"><img src="left.png" width="16" height="16" border="0" alt="Prev"></a></td>
<td><a accesskey="n" href="ECollectionBackendFactory.html"><img src="right.png" width="16" height="16" border="0" alt="Next"></a></td>
</tr></table>
<div class="refentry">
<a name="ECollectionBackend"></a><div class="titlepage"></div>
<div class="refnamediv"><table width="100%"><tr>
<td valign="top">
<h2><span class="refentrytitle"><a name="ECollectionBackend.top_of_page"></a>ECollectionBackend</span></h2>
<p>ECollectionBackend — A base class for a data source collection backend</p>
</td>
<td class="gallery_image" valign="top" align="right"></td>
</tr></table></div>
<div class="refsect1">
<a name="ECollectionBackend.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">
<span class="returnvalue">ESource</span> *
</td>
<td class="function_name">
<a class="link" href="ECollectionBackend.html#e-collection-backend-new-child" title="e_collection_backend_new_child ()">e_collection_backend_new_child</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">struct <a class="link" href="ESourceRegistryServer.html" title="ESourceRegistryServer"><span class="returnvalue">_ESourceRegistryServer</span></a> *
</td>
<td class="function_name">
<a class="link" href="ECollectionBackend.html#e-collection-backend-ref-server" title="e_collection_backend_ref_server ()">e_collection_backend_ref_server</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<a class="link" href="ECollectionBackend.html#e-collection-backend-get-cache-dir" title="e_collection_backend_get_cache_dir ()">e_collection_backend_get_cache_dir</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
</td>
<td class="function_name">
<a class="link" href="ECollectionBackend.html#e-collection-backend-dup-resource-id" title="e_collection_backend_dup_resource_id ()">e_collection_backend_dup_resource_id</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Doubly-Linked-Lists.html#GList"><span class="returnvalue">GList</span></a> *
</td>
<td class="function_name">
<a class="link" href="ECollectionBackend.html#e-collection-backend-claim-all-resources" title="e_collection_backend_claim_all_resources ()">e_collection_backend_claim_all_resources</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Doubly-Linked-Lists.html#GList"><span class="returnvalue">GList</span></a> *
</td>
<td class="function_name">
<a class="link" href="ECollectionBackend.html#e-collection-backend-list-calendar-sources" title="e_collection_backend_list_calendar_sources ()">e_collection_backend_list_calendar_sources</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Doubly-Linked-Lists.html#GList"><span class="returnvalue">GList</span></a> *
</td>
<td class="function_name">
<a class="link" href="ECollectionBackend.html#e-collection-backend-list-contacts-sources" title="e_collection_backend_list_contacts_sources ()">e_collection_backend_list_contacts_sources</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Doubly-Linked-Lists.html#GList"><span class="returnvalue">GList</span></a> *
</td>
<td class="function_name">
<a class="link" href="ECollectionBackend.html#e-collection-backend-list-mail-sources" title="e_collection_backend_list_mail_sources ()">e_collection_backend_list_mail_sources</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="ECollectionBackend.html#e-collection-backend-create-resource-sync" title="e_collection_backend_create_resource_sync ()">e_collection_backend_create_resource_sync</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="ECollectionBackend.html#e-collection-backend-create-resource" title="e_collection_backend_create_resource ()">e_collection_backend_create_resource</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="ECollectionBackend.html#e-collection-backend-create-resource-finish" title="e_collection_backend_create_resource_finish ()">e_collection_backend_create_resource_finish</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="ECollectionBackend.html#e-collection-backend-delete-resource-sync" title="e_collection_backend_delete_resource_sync ()">e_collection_backend_delete_resource_sync</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="ECollectionBackend.html#e-collection-backend-delete-resource" title="e_collection_backend_delete_resource ()">e_collection_backend_delete_resource</a> <span class="c_punctuation">()</span>
</td>
</tr>
<tr>
<td class="function_type">
<a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
</td>
<td class="function_name">
<a class="link" href="ECollectionBackend.html#e-collection-backend-delete-resource-finish" title="e_collection_backend_delete_resource_finish ()">e_collection_backend_delete_resource_finish</a> <span class="c_punctuation">()</span>
</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="ECollectionBackend.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 class="link" href="ESourceRegistryServer.html" title="ESourceRegistryServer"><span class="type">ESourceRegistryServer</span></a> *</td>
<td class="property_name"><a class="link" href="ECollectionBackend.html#ECollectionBackend--server" title="The “server” property">server</a></td>
<td class="property_flags">Read / Write / Construct Only</td>
</tr></tbody>
</table></div>
</div>
<div class="refsect1">
<a name="ECollectionBackend.signals"></a><h2>Signals</h2>
<div class="informaltable"><table border="0">
<colgroup>
<col width="150px" class="signals_return">
<col width="300px" class="signals_name">
<col width="200px" class="signals_flags">
</colgroup>
<tbody>
<tr>
<td class="signal_type"><span class="returnvalue">void</span></td>
<td class="signal_name"><a class="link" href="ECollectionBackend.html#ECollectionBackend-child-added" title="The “child-added” signal">child-added</a></td>
<td class="signal_flags">Run Last</td>
</tr>
<tr>
<td class="signal_type"><span class="returnvalue">void</span></td>
<td class="signal_name"><a class="link" href="ECollectionBackend.html#ECollectionBackend-child-removed" title="The “child-removed” signal">child-removed</a></td>
<td class="signal_flags">Run Last</td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect1">
<a name="ECollectionBackend.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">struct</td>
<td class="function_name"><a class="link" href="ECollectionBackend.html#ECollectionBackend-struct" title="struct ECollectionBackend">ECollectionBackend</a></td>
</tr></tbody>
</table></div>
</div>
<div class="refsect1">
<a name="ECollectionBackend.object-hierarchy"></a><h2>Object Hierarchy</h2>
<pre class="screen">    <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#GObject">GObject</a>
    <span class="lineart">╰──</span> <a class="link" href="EBackend.html" title="EBackend">EBackend</a>
        <span class="lineart">╰──</span> ECollectionBackend
</pre>
</div>
<div class="refsect1">
<a name="ECollectionBackend.includes"></a><h2>Includes</h2>
<pre class="synopsis">#include &lt;libebackend/libebackend.h&gt;
</pre>
</div>
<div class="refsect1">
<a name="ECollectionBackend.description"></a><h2>Description</h2>
<p><a class="link" href="ECollectionBackend.html" title="ECollectionBackend"><span class="type">ECollectionBackend</span></a> is a base class for backends which manage a
collection of data sources that collectively represent the resources
on a remote server.  The resources can include any number of private
and shared email stores, calendars and address books.</p>
<p>The backend's job is to synchronize local representations of remote
resources by adding and removing <a class="link" href="EServerSideSource.html" title="EServerSideSource"><span class="type">EServerSideSource</span></a> instances in an
<a class="link" href="ESourceRegistryServer.html" title="ESourceRegistryServer"><span class="type">ESourceRegistryServer</span></a>.  If possible the backend should also listen
for notifications of newly-added or deleted resources on the remote
server or else poll the remote server at regular intervals and then
update the data source collection accordingly.</p>
<p>As most remote servers require authentication, the backend may also
wish to implement the <span class="type">ESourceAuthenticator</span> interface so it can submit
its own <a class="link" href="EAuthenticationSession.html" title="EAuthenticationSession"><span class="type">EAuthenticationSession</span></a> instances to the <a class="link" href="ESourceRegistryServer.html" title="ESourceRegistryServer"><span class="type">ESourceRegistryServer</span></a>.</p>
</div>
<div class="refsect1">
<a name="ECollectionBackend.functions_details"></a><h2>Functions</h2>
<div class="refsect2">
<a name="e-collection-backend-new-child"></a><h3>e_collection_backend_new_child ()</h3>
<pre class="programlisting"><span class="returnvalue">ESource</span> *
e_collection_backend_new_child (<em class="parameter"><code><a class="link" href="ECollectionBackend.html" title="ECollectionBackend"><span class="type">ECollectionBackend</span></a> *backend</code></em>,
                                <em class="parameter"><code>const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="type">gchar</span></a> *resource_id</code></em>);</pre>
<p>Creates a new <a class="link" href="EServerSideSource.html" title="EServerSideSource"><span class="type">EServerSideSource</span></a> as a child of the collection
<a class="link" href="EBackend.html#EBackend--source" title="The “source” property"><span class="type">“source”</span></a> owned by <em class="parameter"><code>backend</code></em>
.  If possible, the <a class="link" href="EServerSideSource.html" title="EServerSideSource"><span class="type">EServerSideSource</span></a>
is drawn from a cache of previously used sources indexed by <em class="parameter"><code>resource_id</code></em>

so that locally cached data from previous sessions can be reused.</p>
<p>The returned data source should be passed to
<a class="link" href="ESourceRegistryServer.html#e-source-registry-server-add-source" title="e_source_registry_server_add_source ()"><code class="function">e_source_registry_server_add_source()</code></a> to export it over D-Bus.</p>
<p>Return: a newly-created data source</p>
<div class="refsect3">
<a name="id-1.3.4.10.2.7"></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>backend</p></td>
<td class="parameter_description"><p>an <a class="link" href="ECollectionBackend.html" title="ECollectionBackend"><span class="type">ECollectionBackend</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>resource_id</p></td>
<td class="parameter_description"><p>a stable and unique resource ID</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 3.6</p>
</div>
<hr>
<div class="refsect2">
<a name="e-collection-backend-ref-server"></a><h3>e_collection_backend_ref_server ()</h3>
<pre class="programlisting">struct <a class="link" href="ESourceRegistryServer.html" title="ESourceRegistryServer"><span class="returnvalue">_ESourceRegistryServer</span></a> *
e_collection_backend_ref_server (<em class="parameter"><code><a class="link" href="ECollectionBackend.html" title="ECollectionBackend"><span class="type">ECollectionBackend</span></a> *backend</code></em>);</pre>
<p>Returns the <a class="link" href="ESourceRegistryServer.html" title="ESourceRegistryServer"><span class="type">ESourceRegistryServer</span></a> to which <em class="parameter"><code>backend</code></em>
 belongs.</p>
<p>The returned <a class="link" href="ESourceRegistryServer.html" title="ESourceRegistryServer"><span class="type">ESourceRegistryServer</span></a> is referenced for thread-safety.
Unreference the <a class="link" href="ESourceRegistryServer.html" title="ESourceRegistryServer"><span class="type">ESourceRegistryServer</span></a> with <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#g-object-unref"><code class="function">g_object_unref()</code></a> when
finished with it.</p>
<div class="refsect3">
<a name="id-1.3.4.10.3.6"></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>backend</p></td>
<td class="parameter_description"><p>an <a class="link" href="ECollectionBackend.html" title="ECollectionBackend"><span class="type">ECollectionBackend</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.4.10.3.7"></a><h4>Returns</h4>
<p> the <span class="type">ESourceRegisterServer</span> for <em class="parameter"><code>backend</code></em>
</p>
<p></p>
</div>
<p class="since">Since 3.6</p>
</div>
<hr>
<div class="refsect2">
<a name="e-collection-backend-get-cache-dir"></a><h3>e_collection_backend_get_cache_dir ()</h3>
<pre class="programlisting">const <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
e_collection_backend_get_cache_dir (<em class="parameter"><code><a class="link" href="ECollectionBackend.html" title="ECollectionBackend"><span class="type">ECollectionBackend</span></a> *backend</code></em>);</pre>
<p>Returns the private cache directory path for <em class="parameter"><code>backend</code></em>
, which is named
after the <span class="type">“uid”</span> of <em class="parameter"><code>backend</code></em>
's collection <a class="link" href="EBackend.html#EBackend--source" title="The “source” property"><span class="type">“source”</span></a>.</p>
<p>The cache directory is meant to store key files for backend-created
data sources.  See also: <a class="link" href="EServerSideSource.html#e-server-side-source-set-write-directory" title="e_server_side_source_set_write_directory ()"><code class="function">e_server_side_source_set_write_directory()</code></a></p>
<div class="refsect3">
<a name="id-1.3.4.10.4.6"></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>backend</p></td>
<td class="parameter_description"><p>an <a class="link" href="ECollectionBackend.html" title="ECollectionBackend"><span class="type">ECollectionBackend</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.4.10.4.7"></a><h4>Returns</h4>
<p> the cache directory for <em class="parameter"><code>backend</code></em>
</p>
<p></p>
</div>
<p class="since">Since 3.6</p>
</div>
<hr>
<div class="refsect2">
<a name="e-collection-backend-dup-resource-id"></a><h3>e_collection_backend_dup_resource_id ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gchar"><span class="returnvalue">gchar</span></a> *
e_collection_backend_dup_resource_id (<em class="parameter"><code><a class="link" href="ECollectionBackend.html" title="ECollectionBackend"><span class="type">ECollectionBackend</span></a> *backend</code></em>,
                                      <em class="parameter"><code><span class="type">ESource</span> *child_source</code></em>);</pre>
<p>Extracts the resource ID for <em class="parameter"><code>child_source</code></em>
, which is supposed to be a
stable and unique server-assigned identifier for the remote resource
described by <em class="parameter"><code>child_source</code></em>
.  If <em class="parameter"><code>child_source</code></em>
 is not actually a child
of the collection <a class="link" href="EBackend.html#EBackend--source" title="The “source” property"><span class="type">“source”</span></a> owned by <em class="parameter"><code>backend</code></em>
, the function
returns <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>.</p>
<p>The returned string should be freed with <a href="/usr/share/gtk-doc/html/glib/glib-Memory-Allocation.html#g-free"><code class="function">g_free()</code></a> when no longer needed.</p>
<div class="refsect3">
<a name="id-1.3.4.10.5.6"></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>backend</p></td>
<td class="parameter_description"><p>an <a class="link" href="ECollectionBackend.html" title="ECollectionBackend"><span class="type">ECollectionBackend</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>child_source</p></td>
<td class="parameter_description"><p>an <span class="type">ESource</span> managed by <em class="parameter"><code>backend</code></em>
</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.4.10.5.7"></a><h4>Returns</h4>
<p> a newly-allocated resource ID for <em class="parameter"><code>child_source</code></em>
, or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a></p>
<p></p>
</div>
<p class="since">Since 3.6</p>
</div>
<hr>
<div class="refsect2">
<a name="e-collection-backend-claim-all-resources"></a><h3>e_collection_backend_claim_all_resources ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Doubly-Linked-Lists.html#GList"><span class="returnvalue">GList</span></a> *
e_collection_backend_claim_all_resources
                               (<em class="parameter"><code><a class="link" href="ECollectionBackend.html" title="ECollectionBackend"><span class="type">ECollectionBackend</span></a> *backend</code></em>);</pre>
<p>Claims all previously used sources that have not yet been claimed by
<a class="link" href="ECollectionBackend.html#e-collection-backend-new-child" title="e_collection_backend_new_child ()"><code class="function">e_collection_backend_new_child()</code></a> and returns them in a <a href="/usr/share/gtk-doc/html/glib/glib-Doubly-Linked-Lists.html#GList"><span class="type">GList</span></a>.  Note
that previously used sources can only be claimed once, so subsequent
calls to this function for <em class="parameter"><code>backend</code></em>
 will return <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a>.</p>
<p>The <em class="parameter"><code>backend</code></em>
 is then expected to compare the returned list with a
current list of resources from a remote server, create new <span class="type">ESource</span>
instances as needed with <a class="link" href="ECollectionBackend.html#e-collection-backend-new-child" title="e_collection_backend_new_child ()"><code class="function">e_collection_backend_new_child()</code></a>, discard
unneeded <span class="type">ESource</span> instances with <code class="function">e_source_remove()</code>, and export the
remaining instances with <a class="link" href="ESourceRegistryServer.html#e-source-registry-server-add-source" title="e_source_registry_server_add_source ()"><code class="function">e_source_registry_server_add_source()</code></a>.</p>
<p>The sources returned in the list are referenced for thread-safety.
They must each be unreferenced with <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#g-object-unref"><code class="function">g_object_unref()</code></a> when finished
with them.  Free the returned <a href="/usr/share/gtk-doc/html/glib/glib-Doubly-Linked-Lists.html#GList"><span class="type">GList</span></a> itself with <a href="/usr/share/gtk-doc/html/glib/glib-Doubly-Linked-Lists.html#g-list-free"><code class="function">g_list_free()</code></a>.</p>
<p>An easy way to free the list properly in one step is as follows:</p>
<div class="informalexample"><pre class="programlisting">
  g_list_free_full (list, g_object_unref);
</pre></div>
<p></p>
<div class="refsect3">
<a name="id-1.3.4.10.6.10"></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>backend</p></td>
<td class="parameter_description"><p>an <a class="link" href="ECollectionBackend.html" title="ECollectionBackend"><span class="type">ECollectionBackend</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.4.10.6.11"></a><h4>Returns</h4>
<p> a list of previously used sources</p>
<p></p>
</div>
<p class="since">Since 3.6</p>
</div>
<hr>
<div class="refsect2">
<a name="e-collection-backend-list-calendar-sources"></a><h3>e_collection_backend_list_calendar_sources ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Doubly-Linked-Lists.html#GList"><span class="returnvalue">GList</span></a> *
e_collection_backend_list_calendar_sources
                               (<em class="parameter"><code><a class="link" href="ECollectionBackend.html" title="ECollectionBackend"><span class="type">ECollectionBackend</span></a> *backend</code></em>);</pre>
<p>Returns a list of calendar sources belonging to the data source
collection managed by <em class="parameter"><code>backend</code></em>
.</p>
<p>The sources returned in the list are referenced for thread-safety.
They must each be unreferenced with <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#g-object-unref"><code class="function">g_object_unref()</code></a> when finished
with them.  Free the returned <a href="/usr/share/gtk-doc/html/glib/glib-Doubly-Linked-Lists.html#GList"><span class="type">GList</span></a> itself with <a href="/usr/share/gtk-doc/html/glib/glib-Doubly-Linked-Lists.html#g-list-free"><code class="function">g_list_free()</code></a>.</p>
<p>An easy way to free the list properly in one step is as follows:</p>
<div class="informalexample"><pre class="programlisting">
  g_list_free_full (list, g_object_unref);
</pre></div>
<p></p>
<div class="refsect3">
<a name="id-1.3.4.10.7.9"></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>backend</p></td>
<td class="parameter_description"><p>an <a class="link" href="ECollectionBackend.html" title="ECollectionBackend"><span class="type">ECollectionBackend</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.4.10.7.10"></a><h4>Returns</h4>
<p> a list of calendar sources</p>
<p></p>
</div>
<p class="since">Since 3.6</p>
</div>
<hr>
<div class="refsect2">
<a name="e-collection-backend-list-contacts-sources"></a><h3>e_collection_backend_list_contacts_sources ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Doubly-Linked-Lists.html#GList"><span class="returnvalue">GList</span></a> *
e_collection_backend_list_contacts_sources
                               (<em class="parameter"><code><a class="link" href="ECollectionBackend.html" title="ECollectionBackend"><span class="type">ECollectionBackend</span></a> *backend</code></em>);</pre>
<p>Returns a list of address book sources belonging to the data source
collection managed by <em class="parameter"><code>backend</code></em>
.</p>
<p>The sources returned in the list are referenced for thread-safety.
They must each be unreferenced with <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#g-object-unref"><code class="function">g_object_unref()</code></a> when finished
with them.  Free the returned <a href="/usr/share/gtk-doc/html/glib/glib-Doubly-Linked-Lists.html#GList"><span class="type">GList</span></a> itself with <a href="/usr/share/gtk-doc/html/glib/glib-Doubly-Linked-Lists.html#g-list-free"><code class="function">g_list_free()</code></a>.</p>
<p>An easy way to free the list properly in one step is as follows:</p>
<div class="informalexample"><pre class="programlisting">
  g_list_free_full (list, g_object_unref);
</pre></div>
<p></p>
<div class="refsect3">
<a name="id-1.3.4.10.8.9"></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>backend</p></td>
<td class="parameter_description"><p>an <a class="link" href="ECollectionBackend.html" title="ECollectionBackend"><span class="type">ECollectionBackend</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.4.10.8.10"></a><h4>Returns</h4>
<p> a list of address book sources</p>
<p></p>
</div>
<p class="since">Since 3.6</p>
</div>
<hr>
<div class="refsect2">
<a name="e-collection-backend-list-mail-sources"></a><h3>e_collection_backend_list_mail_sources ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Doubly-Linked-Lists.html#GList"><span class="returnvalue">GList</span></a> *
e_collection_backend_list_mail_sources
                               (<em class="parameter"><code><a class="link" href="ECollectionBackend.html" title="ECollectionBackend"><span class="type">ECollectionBackend</span></a> *backend</code></em>);</pre>
<p>Returns a list of mail sources belonging to the data source collection
managed by <em class="parameter"><code>backend</code></em>
.</p>
<p>The sources returned in the list are referenced for thread-safety.
They must each be unreferenced with <a href="/usr/share/gtk-doc/html/gobject/gobject-The-Base-Object-Type.html#g-object-unref"><code class="function">g_object_unref()</code></a> when finished
with them.  Free the returned <a href="/usr/share/gtk-doc/html/glib/glib-Doubly-Linked-Lists.html#GList"><span class="type">GList</span></a> itself with <a href="/usr/share/gtk-doc/html/glib/glib-Doubly-Linked-Lists.html#g-list-free"><code class="function">g_list_free()</code></a>.</p>
<p>An easy way to free the list properly in one step is as follows:</p>
<div class="informalexample"><pre class="programlisting">
  g_list_free_full (list, g_object_unref);
</pre></div>
<p></p>
<div class="refsect3">
<a name="id-1.3.4.10.9.9"></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>backend</p></td>
<td class="parameter_description"><p>an <a class="link" href="ECollectionBackend.html" title="ECollectionBackend"><span class="type">ECollectionBackend</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr></tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.4.10.9.10"></a><h4>Returns</h4>
<p> a list of mail sources</p>
<p></p>
</div>
<p class="since">Since 3.6</p>
</div>
<hr>
<div class="refsect2">
<a name="e-collection-backend-create-resource-sync"></a><h3>e_collection_backend_create_resource_sync ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
e_collection_backend_create_resource_sync
                               (<em class="parameter"><code><a class="link" href="ECollectionBackend.html" title="ECollectionBackend"><span class="type">ECollectionBackend</span></a> *backend</code></em>,
                                <em class="parameter"><code><span class="type">ESource</span> *source</code></em>,
                                <em class="parameter"><code><a href="/usr/share/gtk-doc/html/gio/GCancellable.html"><span class="type">GCancellable</span></a> *cancellable</code></em>,
                                <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>Creates a server-side resource described by <em class="parameter"><code>source</code></em>
.  For example, if
<em class="parameter"><code>source</code></em>
 describes a new calendar, an equivalent calendar is created on
the server.</p>
<p>It is the implementor's responsibility to examine <em class="parameter"><code>source</code></em>
 and determine
what the equivalent server-side resource would be.  If this cannot be
determined without ambiguity, the function must return an error.</p>
<p>After the server-side resource is successfully created, the implementor
must also add an <span class="type">ESource</span> to <em class="parameter"><code>backend</code></em>
's <a class="link" href="ECollectionBackend.html#ECollectionBackend--server" title="The “server” property"><span class="type">“server”</span></a>.  This
can either be done immediately or in response to some "resource created"
notification from the server.  The added <span class="type">ESource</span> can be <em class="parameter"><code>source</code></em>
 itself
or a different <span class="type">ESource</span> instance that describes the new resource.</p>
<p>If an error occurs, the function will set <em class="parameter"><code>error</code></em>
 and return <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a>.</p>
<div class="refsect3">
<a name="id-1.3.4.10.10.8"></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>backend</p></td>
<td class="parameter_description"><p>an <a class="link" href="ECollectionBackend.html" title="ECollectionBackend"><span class="type">ECollectionBackend</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>source</p></td>
<td class="parameter_description"><p>an <span class="type">ESource</span></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="/usr/share/gtk-doc/html/gio/GCancellable.html"><span class="type">GCancellable</span></a> object, or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>return location for a <a href="/usr/share/gtk-doc/html/glib/glib-Error-Reporting.html#GError"><span class="type">GError</span></a>, or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.4.10.10.9"></a><h4>Returns</h4>
<p> <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> on success, <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> on failure</p>
<p></p>
</div>
<p class="since">Since 3.6</p>
</div>
<hr>
<div class="refsect2">
<a name="e-collection-backend-create-resource"></a><h3>e_collection_backend_create_resource ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
e_collection_backend_create_resource (<em class="parameter"><code><a class="link" href="ECollectionBackend.html" title="ECollectionBackend"><span class="type">ECollectionBackend</span></a> *backend</code></em>,
                                      <em class="parameter"><code><span class="type">ESource</span> *source</code></em>,
                                      <em class="parameter"><code><a href="/usr/share/gtk-doc/html/gio/GCancellable.html"><span class="type">GCancellable</span></a> *cancellable</code></em>,
                                      <em class="parameter"><code><a href="/usr/share/gtk-doc/html/gio/GAsyncResult.html#GAsyncReadyCallback"><span class="type">GAsyncReadyCallback</span></a> callback</code></em>,
                                      <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>);</pre>
<p>Asynchronously creates a server-side resource described by <em class="parameter"><code>source</code></em>
.
For example, if <em class="parameter"><code>source</code></em>
 describes a new calendar, an equivalent calendar
is created on the server.</p>
<p>It is the implementor's responsibility to examine <em class="parameter"><code>source</code></em>
 and determine
what the equivalent server-side resource would be.  If this cannot be
determined without ambiguity, the function must return an error.</p>
<p>After the server-side resource is successfully created, the implementor
must also add an <span class="type">ESource</span> to <em class="parameter"><code>backend</code></em>
's <a class="link" href="ECollectionBackend.html#ECollectionBackend--server" title="The “server” property"><span class="type">“server”</span></a>.  This
can either be done immediately or in response to some "resource created"
notification from the server.  The added <span class="type">ESource</span> can be <em class="parameter"><code>source</code></em>
 itself
or a different <span class="type">ESource</span> instance that describes the new resource.</p>
<p>When the operation is finished, <em class="parameter"><code>callback</code></em>
 will be called.  You can then
call <a class="link" href="ECollectionBackend.html#e-collection-backend-create-resource-finish" title="e_collection_backend_create_resource_finish ()"><code class="function">e_collection_backend_create_resource_finish()</code></a> to get the result of
the operation.</p>
<div class="refsect3">
<a name="id-1.3.4.10.11.8"></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>backend</p></td>
<td class="parameter_description"><p>an <a class="link" href="ECollectionBackend.html" title="ECollectionBackend"><span class="type">ECollectionBackend</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>source</p></td>
<td class="parameter_description"><p>an <span class="type">ESource</span></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="/usr/share/gtk-doc/html/gio/GCancellable.html"><span class="type">GCancellable</span></a> object, or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>callback</p></td>
<td class="parameter_description"><p>a <a href="/usr/share/gtk-doc/html/gio/GAsyncResult.html#GAsyncReadyCallback"><span class="type">GAsyncReadyCallback</span></a> to call when the request is satisfied</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 callback function</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 3.6</p>
</div>
<hr>
<div class="refsect2">
<a name="e-collection-backend-create-resource-finish"></a><h3>e_collection_backend_create_resource_finish ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
e_collection_backend_create_resource_finish
                               (<em class="parameter"><code><a class="link" href="ECollectionBackend.html" title="ECollectionBackend"><span class="type">ECollectionBackend</span></a> *backend</code></em>,
                                <em class="parameter"><code><a href="/usr/share/gtk-doc/html/gio/GAsyncResult.html"><span class="type">GAsyncResult</span></a> *result</code></em>,
                                <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>Finishes the operation started with <a class="link" href="ECollectionBackend.html#e-collection-backend-create-resource" title="e_collection_backend_create_resource ()"><code class="function">e_collection_backend_create_resource()</code></a>.</p>
<p>If an error occurred, the function will set <em class="parameter"><code>error</code></em>
 and return <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a>.</p>
<div class="refsect3">
<a name="id-1.3.4.10.12.6"></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>backend</p></td>
<td class="parameter_description"><p>an <a class="link" href="ECollectionBackend.html" title="ECollectionBackend"><span class="type">ECollectionBackend</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>result</p></td>
<td class="parameter_description"><p>a <a href="/usr/share/gtk-doc/html/gio/GAsyncResult.html"><span class="type">GAsyncResult</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>return location for a <a href="/usr/share/gtk-doc/html/glib/glib-Error-Reporting.html#GError"><span class="type">GError</span></a>, or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.4.10.12.7"></a><h4>Returns</h4>
<p> <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> on success, <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> on failure</p>
<p></p>
</div>
<p class="since">Since 3.6</p>
</div>
<hr>
<div class="refsect2">
<a name="e-collection-backend-delete-resource-sync"></a><h3>e_collection_backend_delete_resource_sync ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
e_collection_backend_delete_resource_sync
                               (<em class="parameter"><code><a class="link" href="ECollectionBackend.html" title="ECollectionBackend"><span class="type">ECollectionBackend</span></a> *backend</code></em>,
                                <em class="parameter"><code><span class="type">ESource</span> *source</code></em>,
                                <em class="parameter"><code><a href="/usr/share/gtk-doc/html/gio/GCancellable.html"><span class="type">GCancellable</span></a> *cancellable</code></em>,
                                <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>Deletes a server-side resource described by <em class="parameter"><code>source</code></em>
.  The <em class="parameter"><code>source</code></em>
 must
be a child of <em class="parameter"><code>backend</code></em>
's collection <a class="link" href="EBackend.html#EBackend--source" title="The “source” property"><span class="type">“source”</span></a>.</p>
<p>After the server-side resource is successfully deleted, the implementor
must also remove <em class="parameter"><code>source</code></em>
 from the <em class="parameter"><code>backend</code></em>
's <a class="link" href="ECollectionBackend.html#ECollectionBackend--server" title="The “server” property"><span class="type">“server”</span></a>.
This can either be done immediately or in response to some "resource
deleted" notification from the server.</p>
<p>If an error occurs, the function will set <em class="parameter"><code>error</code></em>
 and return <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a>.</p>
<div class="refsect3">
<a name="id-1.3.4.10.13.7"></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>backend</p></td>
<td class="parameter_description"><p>an <a class="link" href="ECollectionBackend.html" title="ECollectionBackend"><span class="type">ECollectionBackend</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>source</p></td>
<td class="parameter_description"><p>an <span class="type">ESource</span></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="/usr/share/gtk-doc/html/gio/GCancellable.html"><span class="type">GCancellable</span></a> object, or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>return location for a <a href="/usr/share/gtk-doc/html/glib/glib-Error-Reporting.html#GError"><span class="type">GError</span></a>, or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.4.10.13.8"></a><h4>Returns</h4>
<p> <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> on success, <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> on failure</p>
<p></p>
</div>
<p class="since">Since 3.6</p>
</div>
<hr>
<div class="refsect2">
<a name="e-collection-backend-delete-resource"></a><h3>e_collection_backend_delete_resource ()</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
e_collection_backend_delete_resource (<em class="parameter"><code><a class="link" href="ECollectionBackend.html" title="ECollectionBackend"><span class="type">ECollectionBackend</span></a> *backend</code></em>,
                                      <em class="parameter"><code><span class="type">ESource</span> *source</code></em>,
                                      <em class="parameter"><code><a href="/usr/share/gtk-doc/html/gio/GCancellable.html"><span class="type">GCancellable</span></a> *cancellable</code></em>,
                                      <em class="parameter"><code><a href="/usr/share/gtk-doc/html/gio/GAsyncResult.html#GAsyncReadyCallback"><span class="type">GAsyncReadyCallback</span></a> callback</code></em>,
                                      <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a> user_data</code></em>);</pre>
<p>Asynchronously deletes a server-side resource described by <em class="parameter"><code>source</code></em>
.
The <em class="parameter"><code>source</code></em>
 must be a child of <em class="parameter"><code>backend</code></em>
's collection <a class="link" href="EBackend.html#EBackend--source" title="The “source” property"><span class="type">“source”</span></a>.</p>
<p>After the server-side resource is successfully deleted, the implementor
must also remove <em class="parameter"><code>source</code></em>
 from the <em class="parameter"><code>backend</code></em>
's <a class="link" href="ECollectionBackend.html#ECollectionBackend--server" title="The “server” property"><span class="type">“server”</span></a>.
This can either be done immediately or in response to some "resource
deleted" notification from the server.</p>
<p>When the operation is finished, <em class="parameter"><code>callback</code></em>
 will be called.  You can then
call <a class="link" href="ECollectionBackend.html#e-collection-backend-delete-resource-finish" title="e_collection_backend_delete_resource_finish ()"><code class="function">e_collection_backend_delete_resource_finish()</code></a> to get the result of
the operation.</p>
<div class="refsect3">
<a name="id-1.3.4.10.14.7"></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>backend</p></td>
<td class="parameter_description"><p>an <a class="link" href="ECollectionBackend.html" title="ECollectionBackend"><span class="type">ECollectionBackend</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>source</p></td>
<td class="parameter_description"><p>an <span class="type">ESource</span></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="/usr/share/gtk-doc/html/gio/GCancellable.html"><span class="type">GCancellable</span></a> object, or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>callback</p></td>
<td class="parameter_description"><p>a <a href="/usr/share/gtk-doc/html/gio/GAsyncResult.html#GAsyncReadyCallback"><span class="type">GAsyncReadyCallback</span></a> to call when the request is satisfied</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 callback function</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p class="since">Since 3.6</p>
</div>
<hr>
<div class="refsect2">
<a name="e-collection-backend-delete-resource-finish"></a><h3>e_collection_backend_delete_resource_finish ()</h3>
<pre class="programlisting"><a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gboolean"><span class="returnvalue">gboolean</span></a>
e_collection_backend_delete_resource_finish
                               (<em class="parameter"><code><a class="link" href="ECollectionBackend.html" title="ECollectionBackend"><span class="type">ECollectionBackend</span></a> *backend</code></em>,
                                <em class="parameter"><code><a href="/usr/share/gtk-doc/html/gio/GAsyncResult.html"><span class="type">GAsyncResult</span></a> *result</code></em>,
                                <em class="parameter"><code><a href="/usr/share/gtk-doc/html/glib/glib-Error-Reporting.html#GError"><span class="type">GError</span></a> **error</code></em>);</pre>
<p>Finishes the operation started with <a class="link" href="ECollectionBackend.html#e-collection-backend-delete-resource" title="e_collection_backend_delete_resource ()"><code class="function">e_collection_backend_delete_resource()</code></a>.</p>
<p>If an error occurred, the function will set <em class="parameter"><code>error</code></em>
 and return <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a>.</p>
<div class="refsect3">
<a name="id-1.3.4.10.15.6"></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>backend</p></td>
<td class="parameter_description"><p>an <a class="link" href="ECollectionBackend.html" title="ECollectionBackend"><span class="type">ECollectionBackend</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>result</p></td>
<td class="parameter_description"><p>a <a href="/usr/share/gtk-doc/html/gio/GAsyncResult.html"><span class="type">GAsyncResult</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>error</p></td>
<td class="parameter_description"><p>return location for a <a href="/usr/share/gtk-doc/html/glib/glib-Error-Reporting.html#GError"><span class="type">GError</span></a>, or <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#NULL:CAPS"><code class="literal">NULL</code></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<div class="refsect3">
<a name="id-1.3.4.10.15.7"></a><h4>Returns</h4>
<p> <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#TRUE:CAPS"><code class="literal">TRUE</code></a> on success, <a href="/usr/share/gtk-doc/html/glib/glib-Standard-Macros.html#FALSE:CAPS"><code class="literal">FALSE</code></a> on failure</p>
<p></p>
</div>
<p class="since">Since 3.6</p>
</div>
</div>
<div class="refsect1">
<a name="ECollectionBackend.other_details"></a><h2>Types and Values</h2>
<div class="refsect2">
<a name="ECollectionBackend-struct"></a><h3>struct ECollectionBackend</h3>
<pre class="programlisting">struct ECollectionBackend;</pre>
<p>Contains only private data that should be read and manipulated using the
functions below.</p>
<p class="since">Since 3.6</p>
</div>
</div>
<div class="refsect1">
<a name="ECollectionBackend.property-details"></a><h2>Property Details</h2>
<div class="refsect2">
<a name="ECollectionBackend--server"></a><h3>The <code class="literal">“server”</code> property</h3>
<pre class="programlisting">  “server”                   <a class="link" href="ESourceRegistryServer.html" title="ESourceRegistryServer"><span class="type">ESourceRegistryServer</span></a> *</pre>
<p>The server to which the backend belongs.</p>
<p>Flags: Read / Write / Construct Only</p>
</div>
</div>
<div class="refsect1">
<a name="ECollectionBackend.signal-details"></a><h2>Signal Details</h2>
<div class="refsect2">
<a name="ECollectionBackend-child-added"></a><h3>The <code class="literal">“child-added”</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
user_function (<a class="link" href="ECollectionBackend.html" title="ECollectionBackend"><span class="type">ECollectionBackend</span></a> *backend,
               <a class="link" href="EServerSideSource.html" title="EServerSideSource"><span class="type">EServerSideSource</span></a>  *child_source,
               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>            user_data)</pre>
<p>Emitted when an <a class="link" href="EServerSideSource.html" title="EServerSideSource"><span class="type">EServerSideSource</span></a> is added to <em class="parameter"><code>backend</code></em>
's
<a class="link" href="ECollectionBackend.html#ECollectionBackend--server" title="The “server” property"><span class="type">“server”</span></a> as a child of <em class="parameter"><code>backend</code></em>
's collection
<a class="link" href="EBackend.html#EBackend--source" title="The “source” property"><span class="type">“source”</span></a>.</p>
<p>You can think of this as a filtered version of
<a class="link" href="ESourceRegistryServer.html" title="ESourceRegistryServer"><span class="type">ESourceRegistryServer</span></a>'s <a class="link" href="ESourceRegistryServer.html#ESourceRegistryServer-source-added" title="The “source-added” signal"><span class="type">“source-added”</span></a>
signal which only lets through sources relevant to <em class="parameter"><code>backend</code></em>
.</p>
<div class="refsect3">
<a name="id-1.3.4.13.2.6"></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>backend</p></td>
<td class="parameter_description"><p>the <a class="link" href="ECollectionBackend.html" title="ECollectionBackend"><span class="type">ECollectionBackend</span></a> which emitted the signal</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>child_source</p></td>
<td class="parameter_description"><p>the newly-added child <a class="link" href="EServerSideSource.html" title="EServerSideSource"><span class="type">EServerSideSource</span></a></p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>user data set when the signal handler was connected.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p>Flags: Run Last</p>
</div>
<hr>
<div class="refsect2">
<a name="ECollectionBackend-child-removed"></a><h3>The <code class="literal">“child-removed”</code> signal</h3>
<pre class="programlisting"><span class="returnvalue">void</span>
user_function (<a class="link" href="ECollectionBackend.html" title="ECollectionBackend"><span class="type">ECollectionBackend</span></a> *backend,
               <a class="link" href="EServerSideSource.html" title="EServerSideSource"><span class="type">EServerSideSource</span></a>  *child_source,
               <a href="/usr/share/gtk-doc/html/glib/glib-Basic-Types.html#gpointer"><span class="type">gpointer</span></a>            user_data)</pre>
<p>Emitted when an <a class="link" href="EServerSideSource.html" title="EServerSideSource"><span class="type">EServerSideSource</span></a> that is a child of
<em class="parameter"><code>backend</code></em>
's collection <a class="link" href="EBackend.html#EBackend--source" title="The “source” property"><span class="type">“source”</span></a> is removed from
<em class="parameter"><code>backend</code></em>
's <a class="link" href="ECollectionBackend.html#ECollectionBackend--server" title="The “server” property"><span class="type">“server”</span></a>.</p>
<p>You can think of this as a filtered version of
<a class="link" href="ESourceRegistryServer.html" title="ESourceRegistryServer"><span class="type">ESourceRegistryServer</span></a>'s <a class="link" href="ESourceRegistryServer.html#ESourceRegistryServer-source-removed" title="The “source-removed” signal"><span class="type">“source-removed”</span></a>
signal which only lets through sources relevant to <em class="parameter"><code>backend</code></em>
.</p>
<div class="refsect3">
<a name="id-1.3.4.13.3.6"></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>backend</p></td>
<td class="parameter_description"><p>the <a class="link" href="ECollectionBackend.html" title="ECollectionBackend"><span class="type">ECollectionBackend</span></a> which emitted the signal</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>child_source</p></td>
<td class="parameter_description"><p>the child <a class="link" href="EServerSideSource.html" title="EServerSideSource"><span class="type">EServerSideSource</span></a> that got removed</p></td>
<td class="parameter_annotations"> </td>
</tr>
<tr>
<td class="parameter_name"><p>user_data</p></td>
<td class="parameter_description"><p>user data set when the signal handler was connected.</p></td>
<td class="parameter_annotations"> </td>
</tr>
</tbody>
</table></div>
</div>
<p>Flags: Run Last</p>
</div>
</div>
</div>
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