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#ifndef LPC_INDEX_H1110724080_INCLUDE_GUARD_
#define LPC_INDEX_H1110724080_INCLUDE_GUARD_
/* This file is part of KMail
* Copyright (C) 2005 Luís Pedro Coelho <luis@luispedro.org>
* (based on the old kmmsgindex by Sam Magnuson)
*
* KMail is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License, version 2, as
* published by the Free Software Foundation.
*
* KMail is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* In addition, as a special exception, the copyright holders give
* permission to link the code of this program with any edition of
* the Qt library by Trolltech AS, Norway (or with modified versions
* of Qt that use the same license as Qt), and distribute linked
* combinations including the two. You must obey the GNU General
* Public License in all respects for all of the code used other than
* Qt. If you modify this file, you may extend this exception to
* your version of the file, but you are not obligated to do so. If
* you do not wish to do so, delete this exception statement from
* your version.
*/
#include <qobject.h>
#include <qcstring.h>
#include <qvaluelist.h>
#include <qtimer.h>
#include <config.h>
#ifdef HAVE_INDEXLIB
#include <indexlib/index.h>
#include <indexlib/lockfile.h>
#endif
#include <vector>
#include <set>
class KMFolder;
class KMSearch;
class KMSearchRule;
class KMSearchPattern;
class KMMsgIndex : public QObject {
Q_OBJECT
public:
explicit KMMsgIndex( QObject* parent );
~KMMsgIndex();
public:
/**
* Starts a query.
* Results will be returned assyncronously by signals.
*
* @return false if the query cannot be handled
*/
bool startQuery( KMSearch* );
/**
* Stops a query. nop if the query isn't running anymore.
*
* @return true if the query was found
*/
bool stopQuery( KMSearch* );
/**
* Just return all the uids where the pattern exists
*/
std::vector<Q_UINT32> simpleSearch( QString, bool* ) const;
/**
* Returns whether the folder is indexable. Only local and dimap
* folders are currently indexable.
*
* Note that a folder might be indexable and not indexed if the user has
* disabled it. @see isIndexed
*/
bool isIndexable( KMFolder* folder ) const;
/**
* Returns whether the folder has indexing enabled.
*
* This returns true immediatelly after indexing has been enabled
* even though the folder is probably still being indexed in the background.
*/
bool isIndexed( KMFolder* folder ) const;
/**
* Returns whether the index is enabled
*/
bool isEnabled() const { return mState != s_disabled; }
public slots:
/**
* Either enable or disable indexing.
*
* Calling setEnabled( true ) will start building the whole index,
* which is an expensive operation (time and disk-space).
*
* Calling setEnabled( false ) will remove the index immediatelly,
* freeing up disk-space.
*/
void setEnabled( bool );
/**
* Change the indexing override for a given folder
*
* If called with true, will start indexing all the messages in the folder
* If called with false will remove all the messages in the folder
*/
void setIndexingEnabled( KMFolder*, bool );
private slots:
/**
* Removes the index.
*
* If the index is enabled, then creation will start on the next time
* KMMsgIndex is constructed.
*/
void clear();
void create();
void maintenance();
void act();
void removeSearch( QObject* );
void continueCreation();
void slotAddMessage( Q_UINT32 message );
void slotRemoveMessage( Q_UINT32 message );
private:
static QString defaultPath();
bool canHandleQuery( const KMSearchPattern* ) const;
int addMessage( Q_UINT32 );
void removeMessage( Q_UINT32 );
void scheduleAction();
bool creating() const;
public:
/**
* @internal
* DO NOT USE THIS CLASS
*
* It is conceptually a private class.
* Just needs to be public because of moc limitations
*/
class Search;
private:
std::vector<Q_UINT32> mPendingMsgs;
std::vector<KMFolder*> mPendingFolders;
std::vector<Q_UINT32> mAddedMsgs;
std::vector<Q_UINT32> mRemovedMsgs;
std::vector<Q_UINT32> mExisting;
enum e_state {
s_idle, // doing nothing, index waiting
s_willcreate, // just constructed, create() scheduled (mIndex == 0)
s_creating, // creating the index from the messages
s_processing, // has messages to process
s_error, // an error occurred
s_disabled // disabled: the index is not working
} mState;
unsigned mMaintenanceCount;
#ifdef HAVE_INDEXLIB
/**
* The lock below should be moved down into libindex itself
* where things can be handled with a lot more granularity
*/
indexlib::detail::lockfile mLockFile;
//enum e_syncState { ss_none, ss_started, ss_synced } mSyncState;
//QTimer* mSyncTimer;
indexlib::index* mIndex;
#endif
std::set<KMFolder*> mOpenedFolders;
std::vector<Search*> mSearches;
QCString mIndexPath;
QTimer* mTimer;
bool mSlowDown;
};
class KMMsgIndex::Search : public QObject {
Q_OBJECT
public:
explicit Search( KMSearch* s );
~Search();
KMSearch* search() const { return mSearch; }
signals:
void found( Q_UINT32 );
void finished( bool );
private slots:
void act();
private:
KMSearch* mSearch;
QTimer* mTimer;
/**
* mResidual is the part of the pattern which is not
* handled by the index
*/
KMSearchPattern* mResidual;
std::vector<Q_UINT32> mValues;
enum { s_none = 0, s_starting, s_emitting, s_emitstopped, s_done } mState;
};
#endif /* LPC_INDEX_H1110724080_INCLUDE_GUARD_ */
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