/* Copyright (C) 2004 J.F.Dockes
* 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.
*
* This program 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.,
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef _INDEXER_H_INCLUDED_
#define _INDEXER_H_INCLUDED_
#include <string>
#include <list>
#include <map>
#include <vector>
#ifndef NO_NAMESPACES
using std::string;
using std::list;
using std::map;
using std::vector;
#endif
#include "rclconfig.h"
#include "rcldb.h"
#include "rcldoc.h"
class FsIndexer;
class BeagleQueueIndexer;
class DbIxStatus {
public:
enum Phase {DBIXS_NONE,
DBIXS_FILES, DBIXS_PURGE, DBIXS_STEMDB, DBIXS_CLOSING,
DBIXS_MONITOR,
DBIXS_DONE};
Phase phase;
string fn; // Last file processed
int docsdone; // Documents actually updated
int filesdone; // Files tested (updated or not)
int dbtotdocs; // Doc count in index at start
void reset()
{
phase = DBIXS_FILES;
fn.erase();
docsdone = filesdone = dbtotdocs = 0;
}
DbIxStatus() {reset();}
};
/** Callback to say what we're doing. If the update func returns false, we
* stop as soon as possible without corrupting state */
class DbIxStatusUpdater {
public:
DbIxStatus status;
virtual ~DbIxStatusUpdater(){}
// Convenience: change phase/fn and update
virtual bool update(DbIxStatus::Phase phase, const string& fn)
{
status.phase = phase;
status.fn = fn;
return update();
}
// To be implemented by user for sending info somewhere
virtual bool update() = 0;
};
/**
* The top level batch indexing object. Processes the configuration,
* then invokes file system walking or other to populate/update the
* database(s).
*/
class ConfIndexer {
public:
enum runStatus {IndexerOk, IndexerError};
ConfIndexer(RclConfig *cnf, DbIxStatusUpdater *updfunc = 0);
virtual ~ConfIndexer();
// Indexer types. Maybe we'll have something more dynamic one day
enum ixType {IxTNone, IxTFs=1, IxTBeagleQueue=2,
IxTAll = IxTFs | IxTBeagleQueue};
// Misc indexing flags
enum IxFlag {IxFNone = 0, IxFIgnoreSkip = 1};
/** Run indexers */
bool index(bool resetbefore, ixType typestorun);
const string &getReason() {return m_reason;}
/** Stemming reset to config: create needed, delete unconfigured */
bool createStemmingDatabases();
/** Create stem database for given language */
bool createStemDb(const string &lang);
/** Create misspelling expansion dictionary if aspell i/f is available */
bool createAspellDict();
/** List possible stemmer names */
static vector<string> getStemmerNames();
/** Index a list of files. No db cleaning or stemdb updating */
bool indexFiles(list<string> &files, IxFlag f = IxFNone);
/** Update index for list of documents given as list of docs (out of query)
*/
bool updateDocs(vector<Rcl::Doc> &docs, IxFlag f = IxFNone);
static bool docsToPaths(vector<Rcl::Doc> &docs, vector<string> &paths);
/** Purge a list of files. */
bool purgeFiles(list<string> &files);
/** Set in place reset mode */
void setInPlaceReset() {m_db.setInPlaceReset();}
private:
RclConfig *m_config;
Rcl::Db m_db;
FsIndexer *m_fsindexer;
bool m_dobeagle;
BeagleQueueIndexer *m_beagler;
DbIxStatusUpdater *m_updater;
string m_reason;
};
#endif /* _INDEXER_H_INCLUDED_ */