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KDE 4.9 PyKDE API Reference
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<h1>CachePolicy Class Reference</h1>
<code>from PyKDE4.akonadi import *</code>
<p>
Namespace: <a href="../akonadi/Akonadi.html">Akonadi</a><br />
<h2>Detailed Description</h2>
<p>Represents the caching policy for a collection.
</p>
<p>
There is one cache policy per collection. It can either specify that all
properties of the policy of the parent collection will be inherited (the
default) or specify the following values:
</p>
<p>
- The item parts that should be permanently kept locally and are downloaded
during a collection sync (e.g. full mail vs. just the headers).
- A minimum time for which non-permanently cached item parts have to be kept
(0 - infinity).
- Whether or not a collection sync is triggered on demand, i.e. as soon
as it is accessed by a client.
- An optional time interval for regular collection sync (aka interval
mail check).
</p>
<p>
Synching means fetching updates from the Akonadi database. The cache policy
does not affect updates of the Akonadi database from the backend, since
backend updates will normally immediately trigger the resource to update the
Akonadi database.
</p>
<p>
The cache policy applies only to reading from the collection. Writing to the
collection is independent of cache policy - all updates are written to the
backend as soon as the resource can schedule this.
</p>
<p>
<pre class="fragment">
Akonadi.CachePolicy policy;
policy.setCacheTimeout( 30 );
policy.setIntervalCheckTime( 20 );
Akonadi.Collection collection = ...
collection.setCachePolicy( policy );
</pre>
</p>
<p>
To do: Do we also need a size limit for the cache as well?
To do: on a POP3 account, is should not be possible to change locally cached parts, find a solution for that
</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>Methods</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#CachePolicy">__init__</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#CachePolicy">__init__</a> (self, <a href="../akonadi/Akonadi.CachePolicy.html">Akonadi.CachePolicy</a> other)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="#cacheTimeout">cacheTimeout</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="#inheritFromParent">inheritFromParent</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="#intervalCheckTime">intervalCheckTime</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">QStringList </td><td class="memItemRight" valign="bottom"><a class="el" href="#localParts">localParts</a> (self)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="#operator ==">operator ==</a> (self, <a href="../akonadi/Akonadi.CachePolicy.html">Akonadi.CachePolicy</a> other)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#setCacheTimeout">setCacheTimeout</a> (self, int timeout)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#setInheritFromParent">setInheritFromParent</a> (self, bool inherit)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#setIntervalCheckTime">setIntervalCheckTime</a> (self, int time)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#setLocalParts">setLocalParts</a> (self, QStringList parts)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="#setSyncOnDemand">setSyncOnDemand</a> (self, bool enable)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="#syncOnDemand">syncOnDemand</a> (self)</td></tr>
</table>
<hr><h2>Method Documentation</h2><a class="anchor" name="CachePolicy"></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"><p>Creates an empty cache policy.
</p></div></div><a class="anchor" name="CachePolicy"></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.CachePolicy.html">Akonadi.CachePolicy</a> </td>
<td class="paramname"><em>other</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 cache policy from an <b>other</b> cache policy.
</p></div></div><a class="anchor" name="cacheTimeout"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">int cacheTimeout</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 cache timeout for non-permanently cached parts in minutes;
-1 means indefinitely.
</p></div></div><a class="anchor" name="inheritFromParent"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">bool inheritFromParent</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 whether it inherits cache policy from the parent collection.
</p></div></div><a class="anchor" name="intervalCheckTime"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">int intervalCheckTime</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 interval check time in minutes, -1 for never.
</p></div></div><a class="anchor" name="localParts"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">QStringList localParts</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 parts to permanently cache locally.
</p></div></div><a class="anchor" name="operator =="></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">bool operator ==</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.CachePolicy.html">Akonadi.CachePolicy</a> </td>
<td class="paramname"><em>other</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p><dl class="internal" compact><dt><b>Internal:</b></dt><dd>
</dd></dl>
</p></div></div><a class="anchor" name="setCacheTimeout"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"> setCacheTimeout</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">int </td>
<td class="paramname"><em>timeout</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Sets cache timeout for non-permanently cached parts.
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>timeout</em> </td><td> Timeout in minutes, -1 for indefinitely.
</td></tr>
</table></dl>
<p>
</p></div></div><a class="anchor" name="setInheritFromParent"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"> setInheritFromParent</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">bool </td>
<td class="paramname"><em>inherit</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Sets whether the cache policy should be inherited from the parent collection.
</p></div></div><a class="anchor" name="setIntervalCheckTime"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"> setIntervalCheckTime</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">int </td>
<td class="paramname"><em>time</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Sets interval check time.
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>time</em> </td><td> Check time interval in minutes, -1 for never.
</td></tr>
</table></dl>
<p>
</p></div></div><a class="anchor" name="setLocalParts"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"> setLocalParts</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">QStringList </td>
<td class="paramname"><em>parts</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 parts to permanently cache locally.
</p></div></div><a class="anchor" name="setSyncOnDemand"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname"> setSyncOnDemand</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">bool </td>
<td class="paramname"><em>enable</em></td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td>
<td></td>
<td width="100%"> </td>
</tr></table>
</div>
<div class="memdoc"><p>Sets whether the collection shall be synced automatically when necessary,
i.e. as soon as it is accessed by a client.
</p><dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td></td><td valign="top"><em>enable</em> </td><td> If true the collection is synced.
</td></tr>
</table></dl>
<p>
</p></div></div><a class="anchor" name="syncOnDemand"></a>
<div class="memitem">
<div class="memproto">
<table class="memname"><tr>
<td class="memname">bool syncOnDemand</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 whether the collection will be synced automatically when necessary,
i.e. as soon as it is accessed by a client.
</p></div></div>
</div>
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