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<?xml version="1.0" encoding="UTF-8"?>
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<title>KIO.MetaInfoJob</title>
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KDE 4.9 PyKDE API Reference
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<h1>MetaInfoJob Class Reference</h1>
<code>from PyKDE4.kio import *</code>
<p>
Inherits: <a href="../kio/KIO.Job.html">KIO.Job</a> → <a href="../kdecore/KCompositeJob.html">KCompositeJob</a> → <a href="../kdecore/KJob.html">KJob</a> → QObject<br />
Namespace: <a href="../kio/KIO.html">KIO</a><br />
<h2>Detailed Description</h2>
<p>MetaInfoJob is a KIO Job to retrieve meta information from files.
</p>
<p>
KIO Job to retrieve meta information from files.
</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="#failed">failed</a> (<a href="../kio/KFileItem.html">KFileItem</a> item)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#gotMetaInfo">gotMetaInfo</a> (<a href="../kio/KFileItem.html">KFileItem</a> item)</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="#MetaInfoJob">__init__</a> (self, <a href="../kio/KFileItemList.html">KFileItemList</a> items, <a href="../kio/KFileMetaInfo.html">KFileMetaInfo.WhatFlags</a> w=KFileMetaInfo.Everything, int iocost=3, int cpucost=6, QStringList requiredfields=QStringList(), QStringList requestedfields=QStringList())</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#MetaInfoJob">__init__</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#getMetaInfo">getMetaInfo</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#removeItem">removeItem</a> (self, <a href="../kio/KFileItem.html">KFileItem</a> item)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#slotResult">slotResult</a> (self, <a href="../kdecore/KJob.html">KJob</a> job)</td></tr>
</table>
<hr><h2>Signal Documentation</h2><a class="anchor" name="failed"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"> failed</td>
<td>(</td>
<td class="paramtype"><a href="../kio/KFileItem.html">KFileItem</a> </td>
<td class="paramname"><em>item</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Emitted when metainfo for <b>item</b> could not be extracted,
either because a plugin for its MIME type does not
exist, or because something went wrong.
</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 KFileItem of the file that failed
</td></tr>
</table></dl>
<p>
</p><dl compact><dt><b>Signal syntax:</b></dt><dd><code>QObject.connect(source, SIGNAL("failed(const KFileItem&)"), target_slot)</code></dd></dl></div></div><a class="anchor" name="gotMetaInfo"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"> gotMetaInfo</td>
<td>(</td>
<td class="paramtype"><a href="../kio/KFileItem.html">KFileItem</a> </td>
<td class="paramname"><em>item</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Emitted when the meta info for <b>item</b> has been successfully
retrieved.
</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 KFileItem describing the fetched item
</td></tr>
</table></dl>
<p>
</p><dl compact><dt><b>Signal syntax:</b></dt><dd><code>QObject.connect(source, SIGNAL("gotMetaInfo(const KFileItem&)"), target_slot)</code></dd></dl></div></div><hr><h2>Method Documentation</h2><a class="anchor" name="MetaInfoJob"></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="../kio/KFileItemList.html">KFileItemList</a> </td>
<td class="paramname"><em>items</em>, </td>
</tr>
<tr>
<td class="memname"></td>
<td></td>
<td class="paramtype"><a href="../kio/KFileMetaInfo.html">KFileMetaInfo.WhatFlags</a> </td>
<td class="paramname"><em>w=KFileMetaInfo.Everything</em>, </td>
</tr>
<tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>iocost=3</em>, </td>
</tr>
<tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">int </td>
<td class="paramname"><em>cpucost=6</em>, </td>
</tr>
<tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">QStringList </td>
<td class="paramname"><em>requiredfields=QStringList()</em>, </td>
</tr>
<tr>
<td class="memname"></td>
<td></td>
<td class="paramtype">QStringList </td>
<td class="paramname"><em>requestedfields=QStringList()</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 MetaInfoJob.
</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> A list of KFileItems to get the metainfo for
<tr><td></td><td valign="top"><em>w</em> </td><td> Flags which serve as a preset which can be customized
with other parameters.
<tr><td></td><td valign="top"><em>iocost</em> </td><td> The allowed cost in terms of io to retrieve the
metainfo. The approximate maximum number of bytes to
be read is 10^iocost. Negative values mean that
there is no limit on the cost. 0 means that no fields
other than the required fields will be retrieved.
The default value of 3 means about 1024 bytes per
file may be read. This is merely a suggestion and not
a hard limit.
<tr><td></td><td valign="top"><em>cpucost</em> </td><td> The allowed cost in terms of cpu to determine the
information in the fields. The number mean the amount
of instructions allowed is 10^cpucost and is a suggestion only.
The default value of 6 means that about a million
instructions (10^6) are allowed. This is useful for
expensive fields like md5 or thumbnails.
<tr><td></td><td valign="top"><em>requiredfields</em> </td><td> The names of fields or groups of fields that should
be retrieved regardless of cost.
<tr><td></td><td valign="top"><em>requestedfields</em> </td><td> The names of fields or groups of fields that should
be retrieved first.
</td></tr>
</table></dl>
<p>
</p></div></div><a class="anchor" name="MetaInfoJob"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">__init__</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="getMetaInfo"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"> getMetaInfo</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="removeItem"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"> removeItem</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="../kio/KFileItem.html">KFileItem</a> </td>
<td class="paramname"><em>item</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Removes an item from metainfo extraction.
</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 that should be removed from the queue
</td></tr>
</table></dl>
<p>
</p></div></div><a class="anchor" name="slotResult"></a>
<div class="memitem">
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<table class="memname"><tr>
<td class="memname"> slotResult</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="../kdecore/KJob.html">KJob</a> </td>
<td class="paramname"><em>job</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
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