Mercurial > hg > svcore
view rdf/PluginRDFIndexer.h @ 492:23945cdd7161
* Update RDF query stuff again so as to set up a temporary datastore
each time we want to query over an rdf file, instead of using rasqal
against the file. Seems the only way to avoid threading and storage
management issues when trying to load from a single-source file and
perform queries against our main datastore at the same time. Maybe.
author | Chris Cannam |
---|---|
date | Mon, 24 Nov 2008 16:26:11 +0000 |
parents | 82ab61fa9223 |
children | e340b2fb9471 |
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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */ /* Sonic Visualiser An audio file viewer and annotation editor. Centre for Digital Music, Queen Mary, University of London. This file copyright 2008 QMUL. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. See the file COPYING included with this distribution for more information. */ #ifndef _PLUGIN_RDF_INDEXER_H_ #define _PLUGIN_RDF_INDEXER_H_ #include <QString> #include <QStringList> #include <QMutex> #include <map> #include <set> class PluginRDFIndexer { public: static PluginRDFIndexer *getInstance(); /** * Index all URLs obtained from index files defined in the current * settings. In contrast to indexing URLs that are installed * locally alongside plugins, this is not done automatically * because it may incur significant processing and networking * effort. It could be called from a background thread at * startup, for example. * * Note that this class has a single mutex, so other functions * will block if called from a different thread while this one is * running. */ bool indexConfiguredURLs(); bool indexURL(QString url); // in addition to "installed" URLs QString getURIForPluginId(QString pluginId); QString getIdForPluginURI(QString uri); QStringList getIndexedPluginIds(); ~PluginRDFIndexer(); protected: PluginRDFIndexer(); QMutex m_mutex; typedef std::map<QString, QString> StringMap; StringMap m_uriToIdMap; StringMap m_idToUriMap; void indexInstalledURLs(); bool pullFile(QString path); bool pullURL(QString urlString); bool reindex(); static PluginRDFIndexer *m_instance; }; #endif