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<h1>Soprano::Util::SignalCacheModel Class Reference</h1> </div>
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<!-- doxytag: class="Soprano::Util::SignalCacheModel" --><!-- doxytag: inherits="Soprano::FilterModel" -->
<p>Caches multiple signals into one to avoid slowdown when adding or removing many statements.
<a href="#_details">More...</a></p>
<p><code>#include <<a class="el" href="signalcachemodel_8h_source.html">Soprano/Util/SignalCacheModel</a>></code></p>
<div id="dynsection-0" onclick="return toggleVisibility(this)" class="dynheader closed" style="cursor:pointer;">
<img id="dynsection-0-trigger" src="closed.png"/> Inheritance diagram for Soprano::Util::SignalCacheModel:</div>
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<div class="center"><img src="classSoprano_1_1Util_1_1SignalCacheModel__inherit__graph.png" border="0" usemap="#Soprano_1_1Util_1_1SignalCacheModel_inherit__map" alt="Inheritance graph"/></div>
<map name="Soprano_1_1Util_1_1SignalCacheModel_inherit__map" id="Soprano_1_1Util_1_1SignalCacheModel_inherit__map">
<area shape="rect" id="node2" href="classSoprano_1_1FilterModel.html" title="A FilterModel is a virtual model that wraps another Model." alt="" coords="43,160,184,189"/><area shape="rect" id="node4" href="classSoprano_1_1Model.html" title="A Model is the central class in Soprano. It is a queryable collection of RDF quadruples, i.e statements." alt="" coords="57,83,169,112"/><area shape="rect" id="node6" href="qobject.html" title="QObject" alt="" coords="5,5,75,35"/><area shape="rect" id="node8" href="classSoprano_1_1Error_1_1ErrorCache.html" title="Core class of Soprano's exception system." alt="" coords="99,5,277,35"/></map>
<center><span class="legend">[<a href="graph_legend.html">legend</a>]</span></center></div>
<p><a href="classSoprano_1_1Util_1_1SignalCacheModel-members.html">List of all members.</a></p>
<table class="memberdecls">
<tr><td colspan="2"><h2><a name="pub-slots"></a>
Public Slots</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classSoprano_1_1Util_1_1SignalCacheModel.html#a6836382bf0d3cbe669b796419ede565a">setCacheTime</a> (int msec)</td></tr>
<tr><td colspan="2"><h2><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classSoprano_1_1Util_1_1SignalCacheModel.html#acbfa872c080fb0fd91fd102e7f2ef3c7">SignalCacheModel</a> (<a class="el" href="classSoprano_1_1Model.html">Model</a> *<a class="elRef" href="qobject.html#parent">parent</a>=0)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual </td><td class="memItemRight" valign="bottom"><a class="el" href="classSoprano_1_1Util_1_1SignalCacheModel.html#a0ff8c11ad563d5c68a5ff3a43394bae9">~SignalCacheModel</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="classSoprano_1_1Util_1_1SignalCacheModel.html#acd134696bf19cb4881882f712766f8a1">cacheTime</a> () const </td></tr>
<tr><td colspan="2"><h2><a name="pro-methods"></a>
Protected Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classSoprano_1_1Util_1_1SignalCacheModel.html#a1331dfcc1905d39d6782b1dc692f15ad">parentStatementsAdded</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classSoprano_1_1Util_1_1SignalCacheModel.html#a7dc4284a49b1cd8bd77662e17dc55677">parentStatementsRemoved</a> ()</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classSoprano_1_1Util_1_1SignalCacheModel.html#a80debadf763ea23fde8c3104d42a61e4">timerEvent</a> (<a class="elRef" href="qtimerevent.html">QTimerEvent</a> *<a class="elRef" href="qobject.html#event">event</a>)</td></tr>
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<hr/><a name="_details"></a><h2>Detailed Description</h2>
<p>Caches multiple signals into one to avoid slowdown when adding or removing many statements. </p>
<p>When adding or removing many statements with separate calls to <a class="el" href="classSoprano_1_1Model.html#aed5b923235288fbac997850cca8f6053">Model::addStatement</a> or <a class="el" href="classSoprano_1_1Model.html#ad5952940a5e589bd70fc794d434e0f63">Model::removeStatement</a> <a class="el" href="classSoprano_1_1Model.html" title="A Model is the central class in Soprano. It is a queryable collection of RDF quadruples, i.e statements.">Model</a> emits signals <a class="el" href="classSoprano_1_1Model.html#a75af3d05854d07b802082e38afea050b">Model::statementsAdded</a> and <a class="el" href="classSoprano_1_1Model.html#ada3d38b1cb9edef8d76aebcb7314de4e">Model::statementsRemoved</a> over and over for each call. This can slow down an application that monitors the state of the model.</p>
<p>The <a class="el" href="classSoprano_1_1Util_1_1SignalCacheModel.html" title="Caches multiple signals into one to avoid slowdown when adding or removing many statements.">SignalCacheModel</a> caches multiple emitted signals into one, trying to ensure that only one signal is delivered in a certain time. The downside of this is that signals are not delivered immiadetely but through the event loop. This, however, should seldomly be a problem.</p>
<dl class="author"><dt><b>Author:</b></dt><dd>Sebastian Trueg <<a href="mailto:trueg@kde.org">trueg@kde.org</a>></dd></dl>
<dl class="since"><dt><b>Since:</b></dt><dd>2.1 </dd></dl>
<p>Definition at line <a class="el" href="signalcachemodel_8h_source.html#l00052">52</a> of file <a class="el" href="signalcachemodel_8h_source.html">signalcachemodel.h</a>.</p>
<hr/><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" id="acbfa872c080fb0fd91fd102e7f2ef3c7"></a><!-- doxytag: member="Soprano::Util::SignalCacheModel::SignalCacheModel" ref="acbfa872c080fb0fd91fd102e7f2ef3c7" args="(Model *parent=0)" -->
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<td class="memname">Soprano::Util::SignalCacheModel::SignalCacheModel </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classSoprano_1_1Model.html">Model</a> * </td>
<td class="paramname"> <em>parent</em> = <code>0</code></td>
<td> ) </td>
<td></td>
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<p>Create a new <a class="el" href="classSoprano_1_1Util_1_1SignalCacheModel.html" title="Caches multiple signals into one to avoid slowdown when adding or removing many statements.">SignalCacheModel</a>.</p>
<dl><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>parent</em> </td><td>The parent <a class="el" href="classSoprano_1_1Model.html" title="A Model is the central class in Soprano. It is a queryable collection of RDF quadruples, i.e statements.">Model</a> to forward the actual calls to. </td></tr>
</table>
</dd>
</dl>
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</div>
<a class="anchor" id="a0ff8c11ad563d5c68a5ff3a43394bae9"></a><!-- doxytag: member="Soprano::Util::SignalCacheModel::~SignalCacheModel" ref="a0ff8c11ad563d5c68a5ff3a43394bae9" args="()" -->
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<td class="memname">virtual Soprano::Util::SignalCacheModel::~SignalCacheModel </td>
<td>(</td>
<td class="paramname"></td>
<td> ) </td>
<td><code> [virtual]</code></td>
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<p>Destructor. </p>
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<hr/><h2>Member Function Documentation</h2>
<a class="anchor" id="acd134696bf19cb4881882f712766f8a1"></a><!-- doxytag: member="Soprano::Util::SignalCacheModel::cacheTime" ref="acd134696bf19cb4881882f712766f8a1" args="() const " -->
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<td class="memname">int Soprano::Util::SignalCacheModel::cacheTime </td>
<td>(</td>
<td class="paramname"></td>
<td> ) </td>
<td> const</td>
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<p>The cache time. </p>
<dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="classSoprano_1_1Util_1_1SignalCacheModel.html#a6836382bf0d3cbe669b796419ede565a">setCacheTime</a> </dd></dl>
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<a class="anchor" id="a6836382bf0d3cbe669b796419ede565a"></a><!-- doxytag: member="Soprano::Util::SignalCacheModel::setCacheTime" ref="a6836382bf0d3cbe669b796419ede565a" args="(int msec)" -->
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<td class="memname">void Soprano::Util::SignalCacheModel::setCacheTime </td>
<td>(</td>
<td class="paramtype">int </td>
<td class="paramname"> <em>msec</em></td>
<td> ) </td>
<td><code> [slot]</code></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>Signals are only delivered once every <code>msec</code> milliseconds.</p>
<p>Default value is 50 </p>
</div>
</div>
<a class="anchor" id="a1331dfcc1905d39d6782b1dc692f15ad"></a><!-- doxytag: member="Soprano::Util::SignalCacheModel::parentStatementsAdded" ref="a1331dfcc1905d39d6782b1dc692f15ad" args="()" -->
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<td class="memname">virtual void Soprano::Util::SignalCacheModel::parentStatementsAdded </td>
<td>(</td>
<td class="paramname"></td>
<td> ) </td>
<td><code> [protected, virtual]</code></td>
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<p>Reimplemented to do the actual signal caching. </p>
<p>Reimplemented from <a class="el" href="classSoprano_1_1FilterModel.html#a724fc0ecde472e7a4c56972604addf09">Soprano::FilterModel</a>.</p>
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<a class="anchor" id="a7dc4284a49b1cd8bd77662e17dc55677"></a><!-- doxytag: member="Soprano::Util::SignalCacheModel::parentStatementsRemoved" ref="a7dc4284a49b1cd8bd77662e17dc55677" args="()" -->
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<td class="memname">virtual void Soprano::Util::SignalCacheModel::parentStatementsRemoved </td>
<td>(</td>
<td class="paramname"></td>
<td> ) </td>
<td><code> [protected, virtual]</code></td>
</tr>
</table>
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<p>Reimplemented to do the actual signal caching. </p>
<p>Reimplemented from <a class="el" href="classSoprano_1_1FilterModel.html#aa4c75931a56b30e0a5b2ec5105ad4653">Soprano::FilterModel</a>.</p>
</div>
</div>
<a class="anchor" id="a80debadf763ea23fde8c3104d42a61e4"></a><!-- doxytag: member="Soprano::Util::SignalCacheModel::timerEvent" ref="a80debadf763ea23fde8c3104d42a61e4" args="(QTimerEvent *event)" -->
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<td class="memname">void Soprano::Util::SignalCacheModel::timerEvent </td>
<td>(</td>
<td class="paramtype"><a class="elRef" href="qtimerevent.html">QTimerEvent</a> * </td>
<td class="paramname"> <em>event</em></td>
<td> ) </td>
<td><code> [protected]</code></td>
</tr>
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</div>
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<hr/>The documentation for this class was generated from the following file:<ul>
<li>/builddir/build/BUILD/soprano-2.5.2/soprano/util/<a class="el" href="signalcachemodel_8h_source.html">signalcachemodel.h</a></li>
</ul>
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