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<?xml version="1.0" encoding="UTF-8"?>
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<title>Akonadi.ItemFetchJob</title>
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KDE 4.7 PyKDE API Reference
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<h1>ItemFetchJob Class Reference</h1>
<code>from PyKDE4.akonadi import *</code>
<p>
Inherits: <a href="../akonadi/Akonadi.Job.html">Akonadi.Job</a> → <a href="../kdecore/KCompositeJob.html">KCompositeJob</a> → <a href="../kdecore/KJob.html">KJob</a> → QObject<br />
Namespace: <a href="../akonadi/Akonadi.html">Akonadi</a><br />
<h2>Detailed Description</h2>
<p>Job that fetches items from the Akonadi storage.
</p>
<p>
This class is used to fetch items from the Akonadi storage.
Which parts of the items (e.g. headers only, attachments or all)
can be specified by the ItemFetchScope.
</p>
<p>
Note that ItemFetchJob does not refresh the Akonadi storage from the
backend; this is unnecessary due to the fact that backend updates
automatically trigger an update to the Akonadi database whenever they occur
(unless the resource is offline).
</p>
<p>
Note that items can not be created in the root collection (Collection.root())
and therefore can not be fetched from there either. That is - an item fetch in
the root collection will yield an empty list.
</p>
<p>
Example:
</p>
<p>
<pre class="fragment">
// Fetch all items with full payload from a collection
const Collection collection = getCollection();
Akonadi.ItemFetchJob *job = new Akonadi.ItemFetchJob( collection );
connect( job, SIGNAL( result( KJob* ) ), SLOT( jobFinished( KJob* ) ) );
job->fetchScope().fetchFullPayload();
...
MyClass.jobFinished( KJob *job )
{
if ( job->error() ) {
qDebug() << "Error occurred";
return;
}
Akonadi.ItemFetchJob *fetchJob = qobject_cast<Akonadi.ItemFetchJob*>( job );
const Akonadi.Item.List items = fetchJob->items();
foreach ( const Akonadi.Item &item, items ) {
qDebug() << "Item ID:" << item.id();
}
}
</pre>
</p>
<p>
<dl class="author" compact><dt><b>Author:</b></dt><dd> Volker Krause <vkrause@kde.org> </dd></dl>
</p>
<table border="0" cellpadding="0" cellspacing="0"><tr><td colspan="2"><br><h2>Signals</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#itemsReceived">itemsReceived</a> ([<a href="../akonadi/Akonadi.Item.html">Akonadi.Item</a>] items)</td></tr>
<tr><td colspan="2"><br><h2>Methods</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#ItemFetchJob">__init__</a> (self, <a href="../akonadi/Akonadi.Collection.html">Akonadi.Collection</a> collection, QObject parent=0)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#ItemFetchJob">__init__</a> (self, <a href="../akonadi/Akonadi.Item.html">Akonadi.Item</a> item, QObject parent=0)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#ItemFetchJob">__init__</a> (self, [<a href="../akonadi/Akonadi.Item.html">Akonadi.Item</a>] items, QObject parent=0)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#doHandleResponse">doHandleResponse</a> (self, QByteArray tag, QByteArray data)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#doStart">doStart</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a href="../akonadi/Akonadi.ItemFetchScope.html">Akonadi.ItemFetchScope</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="#fetchScope">fetchScope</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">[<a href="../akonadi/Akonadi.Item.html">Akonadi.Item</a>] </td><td class="memItemRight" valign="bottom"><a class="el" href="#items">items</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#setCollection">setCollection</a> (self, <a href="../akonadi/Akonadi.Collection.html">Akonadi.Collection</a> collection)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#setFetchScope">setFetchScope</a> (self, <a href="../akonadi/Akonadi.ItemFetchScope.html">Akonadi.ItemFetchScope</a> fetchScope)</td></tr>
</table>
<hr><h2>Signal Documentation</h2><a class="anchor" name="itemsReceived"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"> itemsReceived</td>
<td>(</td>
<td class="paramtype">[<a href="../akonadi/Akonadi.Item.html">Akonadi.Item</a>] </td>
<td class="paramname"><em>items</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>This signal is emitted whenever new items have been fetched completely.
</p>
<p>
<dl class="note" compact><dt><b>Note:</b></dt><dd> This is an optimization; instead of waiting for the end of the job
and calling items(), you can connect to this signal and get the items
incrementally.
</dd></dl> </p>
<p>
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>items</em> </td><td> The fetched items.
</td></tr>
</table></dl>
<p>
</p><dl compact><dt><b>Signal syntax:</b></dt><dd><code>QObject.connect(source, SIGNAL("itemsReceived(const Akonadi::Item::List&)"), target_slot)</code></dd></dl></div></div><hr><h2>Method Documentation</h2><a class="anchor" name="ItemFetchJob"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">__init__</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype"><a href="../akonadi/Akonadi.Collection.html">Akonadi.Collection</a> </td>
<td class="paramname"><em>collection</em>, </td>
</tr>
<tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">QObject </td>
<td class="paramname"><em>parent=0</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Creates a new item fetch job that retrieves all items inside the given collection.
</p>
<p>
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>collection</em> </td><td> The parent collection to fetch all items from.
<tr><td></td><td valign="top"><em>parent</em> </td><td> The parent object.
</td></tr>
</table></dl>
<p>
</p></div></div><a class="anchor" name="ItemFetchJob"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">__init__</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype"><a href="../akonadi/Akonadi.Item.html">Akonadi.Item</a> </td>
<td class="paramname"><em>item</em>, </td>
</tr>
<tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">QObject </td>
<td class="paramname"><em>parent=0</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Creates a new item fetch job that retrieves the specified item.
If the item has a uid set, this is used to identify the item on the Akonadi
server. If only a remote identifier is available, that is used.
However, as remote identifiers are not necessarily globally unique, you
need to specify the resource and/or collection to search in in that case,
using setCollection() or Akonadi.ResourceSelectJob.
</p>
<p>
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>item</em> </td><td> The item to fetch.
<tr><td></td><td valign="top"><em>parent</em> </td><td> The parent object.
</td></tr>
</table></dl>
<p>
</p></div></div><a class="anchor" name="ItemFetchJob"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">__init__</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">[<a href="../akonadi/Akonadi.Item.html">Akonadi.Item</a>] </td>
<td class="paramname"><em>items</em>, </td>
</tr>
<tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">QObject </td>
<td class="paramname"><em>parent=0</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Creates a new item fetch job that retrieves the specified items.
If the items have a uid set, this is used to identify the item on the Akonadi
server. If only a remote identifier is available, that is used.
However, as remote identifiers are not necessarily globally unique, you
need to specify the resource and/or collection to search in in that case,
using setCollection() or Akonadi.ResourceSelectJob.
</p>
<p>
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>items</em> </td><td> The items to fetch.
<tr><td></td><td valign="top"><em>parent</em> </td><td> The parent object.
</td></tr> </table></dl>
<p> <dl class="since" compact><dt><b>Since:</b></dt><dd> 4.4
</dd></dl>
</p></div></div><a class="anchor" name="doHandleResponse"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"> doHandleResponse</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">QByteArray </td>
<td class="paramname"><em>tag</em>, </td>
</tr>
<tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">QByteArray </td>
<td class="paramname"><em>data</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"></div></div><a class="anchor" name="doStart"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"> doStart</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname"><em>self</em> )</td>
<td width="100%"> </td>
</tr>
</table>
</div>
<div class="memdoc"></div></div><a class="anchor" name="fetchScope"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"><a href="../akonadi/Akonadi.ItemFetchScope.html">Akonadi.ItemFetchScope</a> fetchScope</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname"><em>self</em> )</td>
<td width="100%"> </td>
</tr>
</table>
</div>
<div class="memdoc"><p>Returns the item fetch scope.
</p>
<p>
Since this returns a reference it can be used to conveniently modify the
current scope in-place, i.e. by calling a method on the returned reference
without storing it in a local variable. See the ItemFetchScope documentation
for an example.
</p>
<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd> a reference to the current item fetch scope
</dd></dl> </p>
<p>
<dl class="see" compact><dt><b>See also:</b></dt><dd> setFetchScope() for replacing the current item fetch scope
</dd></dl>
</p></div></div><a class="anchor" name="items"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">[<a href="../akonadi/Akonadi.Item.html">Akonadi.Item</a>] items</td>
<td>(</td>
<td class="paramtype"> </td>
<td class="paramname"><em>self</em> )</td>
<td width="100%"> </td>
</tr>
</table>
</div>
<div class="memdoc"><p>Returns the fetched item.
</p>
<p>
<dl class="note" compact><dt><b>Note:</b></dt><dd> The items are invalid before the result( KJob* )
signal has been emitted or if an error occurred.
</dd></dl>
</p></div></div><a class="anchor" name="setCollection"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"> setCollection</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype"><a href="../akonadi/Akonadi.Collection.html">Akonadi.Collection</a> </td>
<td class="paramname"><em>collection</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Specifies the collection the item is in.
This is only required when retrieving an item based on its remote id which might not be
unique globally.
</p>
<p>
<dl class="see" compact><dt><b>See also:</b></dt><dd> Akonadi.ResourceSelectJob
</dd></dl>
</p></div></div><a class="anchor" name="setFetchScope"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"> setFetchScope</td>
<td>(</td>
<td class="paramtype"> <em>self</em>, </td>
<td class="paramname"></td>
</tr><tr>
<td class="memname"></td>
<td></td>
<td class="paramtype"><a href="../akonadi/Akonadi.ItemFetchScope.html">Akonadi.ItemFetchScope</a> </td>
<td class="paramname"><em>fetchScope</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Sets the item fetch scope.
</p>
<p>
The ItemFetchScope controls how much of an item's data is fetched
from the server, e.g. whether to fetch the full item payload or
only meta data.
</p>
<p>
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>fetchScope</em> </td><td> The new scope for item fetch operations.
</td></tr>
</table></dl>
<p> <dl class="see" compact><dt><b>See also:</b></dt><dd> fetchScope()
</dd></dl> <dl class="since" compact><dt><b>Since:</b></dt><dd> 4.4
</dd></dl>
</p></div></div>
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