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/*
* Copyright © 2012 Canonical Ltd.
* By Michal Hruby <michal.hruby@canonical.com>
*
* 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, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef _ZGFTS_INDEXER_H_
#define _ZGFTS_INDEXER_H_
#include <glib.h>
#include <glib-object.h>
#include <gio/gio.h>
#include <xapian.h>
#include "zeitgeist-internal.h"
namespace ZeitgeistFTS {
const std::string INDEX_VERSION = "4";
class Indexer
{
public:
typedef std::map<std::string, GAppInfo*> AppInfoMap;
typedef std::set<std::string> ApplicationSet;
Indexer (ZeitgeistDbReader *reader)
: zg_reader (reader)
, db (NULL)
, query_parser (NULL)
, enquire (NULL)
, tokenizer (NULL)
, checksum (NULL)
, clear_failed_id (0)
{
const gchar *home_dir = g_get_home_dir ();
home_dir_path = home_dir != NULL ? home_dir : "/home";
blacklisting_enabled = g_getenv ("ZEITGEIST_FTS_DISABLE_EVENT_BLACKLIST") == NULL;
}
~Indexer ()
{
if (tokenizer) delete tokenizer;
if (enquire) delete enquire;
if (query_parser) delete query_parser;
if (db) delete db;
if (checksum) g_checksum_free (checksum);
if (uri_schemes_regex) g_regex_unref (uri_schemes_regex);
for (AppInfoMap::iterator it = app_info_cache.begin ();
it != app_info_cache.end (); ++it)
{
g_object_unref (it->second);
}
if (clear_failed_id != 0)
{
g_source_remove (clear_failed_id);
}
}
void Initialize (GError **error);
bool CheckIndex ();
void DropIndex ();
void Commit ();
void IndexEvent (ZeitgeistEvent *event);
void DeleteEvent (guint32 event_id);
void SetDbMetadata (std::string const& key, std::string const& value);
gint64 GetZeitgeistCreationDate ();
GPtrArray* Search (const gchar *search,
ZeitgeistTimeRange *time_range,
GPtrArray *templates,
guint offset,
guint count,
ZeitgeistResultType result_type,
guint *matches,
GError **error);
GPtrArray* SearchWithRelevancies (const gchar *search,
ZeitgeistTimeRange *time_range,
GPtrArray *templates,
ZeitgeistStorageState storage_state,
guint offset,
guint count,
ZeitgeistResultType result_type,
gdouble **relevancies,
gint *relevancies_size,
guint *matches,
GError **error);
private:
std::string ExpandType (std::string const& prefix, const gchar* unparsed_uri);
std::string CompileEventFilterQuery (GPtrArray *templates);
std::string CompileTimeRangeFilterQuery (gint64 start, gint64 end);
std::string CompileQueryString (const gchar *search,
ZeitgeistTimeRange *time_range,
GPtrArray *templates);
std::string PreprocessString (std::string const& input);
void AddDocFilters (ZeitgeistEvent *event, Xapian::Document &doc);
void IndexText (std::string const& text);
bool IndexUri (std::string const& uri, std::string const& origin);
bool IndexActor (std::string const& actor, bool is_subject);
gboolean ClearFailedLookupsCb ();
ZeitgeistDbReader *zg_reader;
Xapian::WritableDatabase *db;
Xapian::QueryParser *query_parser;
Xapian::Enquire *enquire;
Xapian::TermGenerator *tokenizer;
AppInfoMap app_info_cache;
ApplicationSet failed_lookups;
GChecksum *checksum;
GRegex *uri_schemes_regex;
guint clear_failed_id;
std::string home_dir_path;
bool blacklisting_enabled;
};
}
#endif /* _ZGFTS_INDEXER_H_ */
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