qgscapabilitiescache.h

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/***************************************************************************
                              qgscapabilitiescache.h
                              ----------------------
  begin                : May 11th, 2011
  copyright            : (C) 2011 by Marco Hugentobler
  email                : marco dot hugentobler at sourcepole dot ch
 ***************************************************************************/
 
/***************************************************************************
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 ***************************************************************************/
 
#ifndef QGSCAPABILITIESCACHE_H
#define QGSCAPABILITIESCACHE_H
 
#include "qgis_server.h"
#include "qgsserversettings.h"
 
#include <QDateTime>
#include <QDomDocument>
#include <QFileSystemWatcher>
#include <QHash>
#include <QObject>
#include <QTimer>

class SERVER_EXPORT QgsCapabilitiesCache : public QObject
{
    Q_OBJECT
  public:
    QgsCapabilitiesCache( int size );

    const QDomDocument *searchCapabilitiesDocument( const QString &configFilePath, const QString &key );

    void insertCapabilitiesDocument( const QString &configFilePath, const QString &key, const QDomDocument *doc );
 
  public slots:

    void removeCapabilitiesDocument( const QString &path );
 
  private:
    QHash<QString, QHash<QString, QDomDocument>> mCachedCapabilities;
    QHash<QString, QDateTime> mCachedCapabilitiesTimestamps;
    QFileSystemWatcher mFileSystemWatcher;
    QTimer mTimer;
    int mCacheSize;
 
  private slots:
    void removeChangedEntry( const QString &path );
    void removeOutdatedEntries();
};
 
#endif // QGSCAPABILITIESCACHE_H