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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<title>libcontextsubscriber: InfoXmlBackend Class Reference</title>
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<h1>InfoXmlBackend Class Reference</h1><!-- doxytag: class="InfoXmlBackend" --><!-- doxytag: inherits="InfoBackend" -->
<p>Implements the <a class="el" href="class_info_backend.html" title="An abstract (pure virtual) singleton class that represents the actual registry backend...">InfoBackend</a> for reading data from a directory with xml files.
<a href="#_details">More...</a></p>
<p><code>#include <<a class="el" href="infoxmlbackend_8h_source.html">infoxmlbackend.h</a>></code></p>
<p><a href="class_info_xml_backend-members.html">List of all members.</a></p>
<table border="0" cellpadding="0" cellspacing="0">
<tr><td colspan="2"><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="class_info_xml_backend.html#a85f5bb72b4841d7012ff63bd7627f2d0">InfoXmlBackend</a> (QObject *parent=0)</td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual QString </td><td class="memItemRight" valign="bottom"><a class="el" href="class_info_xml_backend.html#a83ac8d65786de855c402b426222ab72b">name</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns 'xml'. <a href="#a83ac8d65786de855c402b426222ab72b"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual QStringList </td><td class="memItemRight" valign="bottom"><a class="el" href="class_info_xml_backend.html#a74d2b52119a26ca60203ecf86721e38c">listKeys</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the list of all the keys in the registry. <a href="#a74d2b52119a26ca60203ecf86721e38c"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual QString </td><td class="memItemRight" valign="bottom"><a class="el" href="class_info_xml_backend.html#a3b0753cd69c99c2fe188e7fd912a072a">docForKey</a> (QString key) const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the documentation for the given <em>key</em> name. <a href="#a3b0753cd69c99c2fe188e7fd912a072a"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual bool </td><td class="memItemRight" valign="bottom"><a class="el" href="class_info_xml_backend.html#a34f0f40564466e150f433aced83af71a">keyDeclared</a> (QString key) const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns true if the given key exists. <a href="#a34f0f40564466e150f433aced83af71a"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual const QList<br class="typebreak"/>
< <a class="el" href="struct_context_provider_info.html">ContextProviderInfo</a> > </td><td class="memItemRight" valign="bottom"><a class="el" href="class_info_xml_backend.html#af72852cc9ec862658d2be1d59be536c0">providersForKey</a> (QString key) const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns a list of providers for the given key. <a href="#af72852cc9ec862658d2be1d59be536c0"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">virtual <a class="el" href="class_context_type_info.html">ContextTypeInfo</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="class_info_xml_backend.html#ae2ffd838ca91a653ea2f18cfa35c8799">typeInfoForKey</a> (QString key) const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the type information for the given <em>key</em>. <a href="#ae2ffd838ca91a653ea2f18cfa35c8799"></a><br/></td></tr>
<tr><td colspan="2"><h2>Static Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">static QString </td><td class="memItemRight" valign="bottom"><a class="el" href="class_info_xml_backend.html#aeba0f378c01b6740c53ea977c10947b0">registryPath</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the full path to the registry directory. <a href="#aeba0f378c01b6740c53ea977c10947b0"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">static QString </td><td class="memItemRight" valign="bottom"><a class="el" href="class_info_xml_backend.html#ae919a19ac7fc38f60048b900d49c41d5">coreDeclPath</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Returns the full path to the core property declaration file. <a href="#ae919a19ac7fc38f60048b900d49c41d5"></a><br/></td></tr>
<tr><td colspan="2"><h2>Private Slots</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_info_xml_backend.html#aedf432bc14783ab4e9f2858a088e0643">onDirectoryChanged</a> (const QString &path)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Called when the registry directory changed (ie. <a href="#aedf432bc14783ab4e9f2858a088e0643"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_info_xml_backend.html#ab2155f5c965bc1249987f6ae942d004b">onFileChanged</a> (const QString &path)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Called when one of the parsed XML files changed. <a href="#ab2155f5c965bc1249987f6ae942d004b"></a><br/></td></tr>
<tr><td colspan="2"><h2>Private Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_info_xml_backend.html#a1407eccac5cb06f88fc6014d4ee25f48">regenerateKeyDataList</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Clears all the stored data about the registry and parses it all over again. <a href="#a1407eccac5cb06f88fc6014d4ee25f48"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_info_xml_backend.html#ab5d85a566993462042838c786700f7f8">readKeyDataFromXml</a> (const QString &path)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Parses a given <em>path</em> file and adds it's contents to the hash. <a href="#ab5d85a566993462042838c786700f7f8"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_info_xml_backend.html#a59c6595edec886fd70a451102196ea5c">parseKey</a> (const <a class="el" href="class_assoc_tree.html">AssocTree</a> &keyTree, const <a class="el" href="class_assoc_tree.html">AssocTree</a> &providerTree)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Parse the given QVariant tree which is supposed to be a key tree. <a href="#a59c6595edec886fd70a451102196ea5c"></a><br/></td></tr>
<tr><td colspan="2"><h2>Private Attributes</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">QFileSystemWatcher </td><td class="memItemRight" valign="bottom"><a class="el" href="class_info_xml_backend.html#a6ed00727580f66f06f33ecdb2a7581e7">watcher</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">A watched object obsering the database file. Delivers synced notifications. <a href="#a6ed00727580f66f06f33ecdb2a7581e7"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">QHash< QString, <a class="el" href="struct_info_key_data.html">InfoKeyData</a> > </td><td class="memItemRight" valign="bottom"><a class="el" href="class_info_xml_backend.html#a60f512bdb81310502e5d80c2b738d513">keyDataHash</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">This hash contains the full state of registry in memory. <a href="#a60f512bdb81310502e5d80c2b738d513"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">QHash< QString, QList<br class="typebreak"/>
< <a class="el" href="struct_context_provider_info.html">ContextProviderInfo</a> > > </td><td class="memItemRight" valign="bottom"><a class="el" href="class_info_xml_backend.html#a6bc7baa201268651c5203c8ddf9f1eef">keyProvidersHash</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">This hash contains providers for keys. <a href="#a6bc7baa201268651c5203c8ddf9f1eef"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="class_info_xml_backend.html#ac61fad8518de174500caaaa278bf1672">countOfFilesInLastParse</a></td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">The number of xml files we parsed in last registry update. <a href="#ac61fad8518de174500caaaa278bf1672"></a><br/></td></tr>
</table>
<hr/><a name="_details"></a><h2>Detailed Description</h2>
<p>Implements the <a class="el" href="class_info_backend.html" title="An abstract (pure virtual) singleton class that represents the actual registry backend...">InfoBackend</a> for reading data from a directory with xml files. </p>
<p>This class is not exported in the public API. It keeps all the data cached in the memory. It's assumed that this backend is not going to be used live in production systems and does not need to be ultra-fast (instead, implementation simplicity and corectness are preffered). For fast backend see the <a class="el" href="class_info_cdb_backend.html" title="Implements the InfoBackend for reading data from a cdb database.">InfoCdbBackend</a>. </p>
<hr/><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" id="a85f5bb72b4841d7012ff63bd7627f2d0"></a><!-- doxytag: member="InfoXmlBackend::InfoXmlBackend" ref="a85f5bb72b4841d7012ff63bd7627f2d0" args="(QObject *parent=0)" -->
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<td class="memname">InfoXmlBackend::InfoXmlBackend </td>
<td>(</td>
<td class="paramtype">QObject * </td>
<td class="paramname"> <em>parent</em> = <code>0</code></td>
<td> ) </td>
<td><code> [explicit]</code></td>
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<div class="memdoc">
</div>
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<hr/><h2>Member Function Documentation</h2>
<a class="anchor" id="ae919a19ac7fc38f60048b900d49c41d5"></a><!-- doxytag: member="InfoXmlBackend::coreDeclPath" ref="ae919a19ac7fc38f60048b900d49c41d5" args="()" -->
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<td class="memname">QString InfoXmlBackend::coreDeclPath </td>
<td>(</td>
<td class="paramname"></td>
<td> ) </td>
<td><code> [static]</code></td>
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<div class="memdoc">
<p>Returns the full path to the core property declaration file. </p>
<p>Takes the <code>CONTEXT_CORE_DECLARATIONS</code> env variable into account. </p>
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</div>
<a class="anchor" id="a3b0753cd69c99c2fe188e7fd912a072a"></a><!-- doxytag: member="InfoXmlBackend::docForKey" ref="a3b0753cd69c99c2fe188e7fd912a072a" args="(QString key) const " -->
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<td class="memname">QString InfoXmlBackend::docForKey </td>
<td>(</td>
<td class="paramtype">QString </td>
<td class="paramname"> <em>key</em></td>
<td> ) </td>
<td> const<code> [virtual]</code></td>
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<p>Returns the documentation for the given <em>key</em> name. </p>
<p>Implements <a class="el" href="class_info_backend.html#af90947cb65d219d1f703683a471f649d">InfoBackend</a>.</p>
</div>
</div>
<a class="anchor" id="a34f0f40564466e150f433aced83af71a"></a><!-- doxytag: member="InfoXmlBackend::keyDeclared" ref="a34f0f40564466e150f433aced83af71a" args="(QString key) const " -->
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<td class="memname">bool InfoXmlBackend::keyDeclared </td>
<td>(</td>
<td class="paramtype">QString </td>
<td class="paramname"> <em>key</em></td>
<td> ) </td>
<td> const<code> [virtual]</code></td>
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<p>Returns true if the given key exists. </p>
<p>Implements <a class="el" href="class_info_backend.html#a4ff58350a0f16796b0704353f554d303">InfoBackend</a>.</p>
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<a class="anchor" id="a74d2b52119a26ca60203ecf86721e38c"></a><!-- doxytag: member="InfoXmlBackend::listKeys" ref="a74d2b52119a26ca60203ecf86721e38c" args="() const " -->
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<td class="memname">QStringList InfoXmlBackend::listKeys </td>
<td>(</td>
<td class="paramname"></td>
<td> ) </td>
<td> const<code> [virtual]</code></td>
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<p>Returns the list of all the keys in the registry. </p>
<p>Implements <a class="el" href="class_info_backend.html#ab982301f28a9655255683ad66c8f0c95">InfoBackend</a>.</p>
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<a class="anchor" id="a83ac8d65786de855c402b426222ab72b"></a><!-- doxytag: member="InfoXmlBackend::name" ref="a83ac8d65786de855c402b426222ab72b" args="() const " -->
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<td class="memname">QString InfoXmlBackend::name </td>
<td>(</td>
<td class="paramname"></td>
<td> ) </td>
<td> const<code> [virtual]</code></td>
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<p>Returns 'xml'. </p>
<p>Implements <a class="el" href="class_info_backend.html#afa40871167e96ccc256e33b79a628ed3">InfoBackend</a>.</p>
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<a class="anchor" id="aedf432bc14783ab4e9f2858a088e0643"></a><!-- doxytag: member="InfoXmlBackend::onDirectoryChanged" ref="aedf432bc14783ab4e9f2858a088e0643" args="(const QString &path)" -->
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<td class="memname">void InfoXmlBackend::onDirectoryChanged </td>
<td>(</td>
<td class="paramtype">const QString & </td>
<td class="paramname"> <em>path</em></td>
<td> ) </td>
<td><code> [private, slot]</code></td>
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<p>Called when the registry directory changed (ie. </p>
<p>file removed or added). Triggers a whole registry rebuild + signal emissions. It detects a situation when a added/removed file was not a parsed(xml) file. </p>
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<a class="anchor" id="ab2155f5c965bc1249987f6ae942d004b"></a><!-- doxytag: member="InfoXmlBackend::onFileChanged" ref="ab2155f5c965bc1249987f6ae942d004b" args="(const QString &path)" -->
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<td class="memname">void InfoXmlBackend::onFileChanged </td>
<td>(</td>
<td class="paramtype">const QString & </td>
<td class="paramname"> <em>path</em></td>
<td> ) </td>
<td><code> [private, slot]</code></td>
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<p>Called when one of the parsed XML files changed. </p>
<p>This triggers a whole registry rebuild + signal emissions. </p>
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<a class="anchor" id="a59c6595edec886fd70a451102196ea5c"></a><!-- doxytag: member="InfoXmlBackend::parseKey" ref="a59c6595edec886fd70a451102196ea5c" args="(const AssocTree &keyTree, const AssocTree &providerTree)" -->
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<td class="memname">void InfoXmlBackend::parseKey </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="class_assoc_tree.html">AssocTree</a> & </td>
<td class="paramname"> <em>keyTree</em>, </td>
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<td class="paramkey"></td>
<td></td>
<td class="paramtype">const <a class="el" href="class_assoc_tree.html">AssocTree</a> & </td>
<td class="paramname"> <em>providerTree</em></td><td> </td>
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<td>)</td>
<td></td><td></td><td><code> [private]</code></td>
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<p>Parse the given QVariant tree which is supposed to be a key tree. </p>
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<a class="anchor" id="af72852cc9ec862658d2be1d59be536c0"></a><!-- doxytag: member="InfoXmlBackend::providersForKey" ref="af72852cc9ec862658d2be1d59be536c0" args="(QString key) const " -->
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<td class="memname">const QList< <a class="el" href="struct_context_provider_info.html">ContextProviderInfo</a> > InfoXmlBackend::providersForKey </td>
<td>(</td>
<td class="paramtype">QString </td>
<td class="paramname"> <em>key</em></td>
<td> ) </td>
<td> const<code> [virtual]</code></td>
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<p>Returns a list of providers for the given key. </p>
<p>Implements <a class="el" href="class_info_backend.html#a29733f7d3ba8bf62a932eae5b851d2f8">InfoBackend</a>.</p>
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<a class="anchor" id="ab5d85a566993462042838c786700f7f8"></a><!-- doxytag: member="InfoXmlBackend::readKeyDataFromXml" ref="ab5d85a566993462042838c786700f7f8" args="(const QString &path)" -->
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<td class="memname">void InfoXmlBackend::readKeyDataFromXml </td>
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<td class="paramtype">const QString & </td>
<td class="paramname"> <em>path</em></td>
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<td><code> [private]</code></td>
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<p>Parses a given <em>path</em> file and adds it's contents to the hash. </p>
<p>Also adds the file to the watcher (starts observing it). </p>
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<a class="anchor" id="a1407eccac5cb06f88fc6014d4ee25f48"></a><!-- doxytag: member="InfoXmlBackend::regenerateKeyDataList" ref="a1407eccac5cb06f88fc6014d4ee25f48" args="()" -->
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<td class="memname">void InfoXmlBackend::regenerateKeyDataList </td>
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<p>Clears all the stored data about the registry and parses it all over again. </p>
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<a class="anchor" id="aeba0f378c01b6740c53ea977c10947b0"></a><!-- doxytag: member="InfoXmlBackend::registryPath" ref="aeba0f378c01b6740c53ea977c10947b0" args="()" -->
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<p>Returns the full path to the registry directory. </p>
<p>Takes the <code>CONTEXT_PROVIDERS</code> env variable into account. </p>
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<a class="anchor" id="ae2ffd838ca91a653ea2f18cfa35c8799"></a><!-- doxytag: member="InfoXmlBackend::typeInfoForKey" ref="ae2ffd838ca91a653ea2f18cfa35c8799" args="(QString key) const " -->
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<td class="memname"><a class="el" href="class_context_type_info.html">ContextTypeInfo</a> InfoXmlBackend::typeInfoForKey </td>
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<p>Returns the type information for the given <em>key</em>. </p>
<p>Implements <a class="el" href="class_info_backend.html#a96772d269c583b286607aad334efba94">InfoBackend</a>.</p>
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<hr/><h2>Member Data Documentation</h2>
<a class="anchor" id="ac61fad8518de174500caaaa278bf1672"></a><!-- doxytag: member="InfoXmlBackend::countOfFilesInLastParse" ref="ac61fad8518de174500caaaa278bf1672" args="" -->
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<td class="memname">int <a class="el" href="class_info_xml_backend.html#ac61fad8518de174500caaaa278bf1672">InfoXmlBackend::countOfFilesInLastParse</a><code> [private]</code></td>
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<p>The number of xml files we parsed in last registry update. </p>
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<a class="anchor" id="a60f512bdb81310502e5d80c2b738d513"></a><!-- doxytag: member="InfoXmlBackend::keyDataHash" ref="a60f512bdb81310502e5d80c2b738d513" args="" -->
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<td class="memname">QHash<QString, <a class="el" href="struct_info_key_data.html">InfoKeyData</a>> <a class="el" href="class_info_xml_backend.html#a60f512bdb81310502e5d80c2b738d513">InfoXmlBackend::keyDataHash</a><code> [private]</code></td>
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<p>This hash contains the full state of registry in memory. </p>
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<a class="anchor" id="a6bc7baa201268651c5203c8ddf9f1eef"></a><!-- doxytag: member="InfoXmlBackend::keyProvidersHash" ref="a6bc7baa201268651c5203c8ddf9f1eef" args="" -->
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<td class="memname">QHash<QString, QList<<a class="el" href="struct_context_provider_info.html">ContextProviderInfo</a>> > <a class="el" href="class_info_xml_backend.html#a6bc7baa201268651c5203c8ddf9f1eef">InfoXmlBackend::keyProvidersHash</a><code> [private]</code></td>
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<p>This hash contains providers for keys. </p>
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<a class="anchor" id="a6ed00727580f66f06f33ecdb2a7581e7"></a><!-- doxytag: member="InfoXmlBackend::watcher" ref="a6ed00727580f66f06f33ecdb2a7581e7" args="" -->
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<td class="memname">QFileSystemWatcher <a class="el" href="class_info_xml_backend.html#a6ed00727580f66f06f33ecdb2a7581e7">InfoXmlBackend::watcher</a><code> [private]</code></td>
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<p>A watched object obsering the database file. Delivers synced notifications. </p>
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<hr/>The documentation for this class was generated from the following files:<ul>
<li><a class="el" href="infoxmlbackend_8h_source.html">infoxmlbackend.h</a></li>
<li><a class="el" href="infoxmlbackend_8cpp.html">infoxmlbackend.cpp</a></li>
</ul>
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<hr size="1"/><address style="text-align: right;"><small>Generated on Wed Nov 18 12:52:34 2009 for libcontextsubscriber by
<a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.6.1 </small></address>
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