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/*
IMMS: Intelligent Multimedia Management System
Copyright (C) 2001-2009 Michael Grigoriev
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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <iostream>
#include <sstream>
#include <unistd.h>
#include <sys/stat.h>
#include <sqlite3.h>
#include "strmanip.h"
#include "sqldb2.h"
#include "immsutil.h"
using std::endl;
using std::cerr;
using std::ostringstream;
// Fuzzy compare function using levenshtein string distance
static void fuzzy_like(sqlite3_context *context, int argc, sqlite3_value** val)
{
if (argc != 2)
throw SQLException("fuzzy_like", "argc != 2");
sqlite3_result_int(context, string_like(
(char*)sqlite3_value_text(val[0]),
(char*)sqlite3_value_text(val[1]), 4));
}
extern sqlite3 *db();
SqlDb::SqlDb()
: correlations(new AttachedDatabase()), acoustic(new AttachedDatabase())
{
if (!access(get_imms_root("imms.db").c_str(), R_OK)
&& access(get_imms_root("imms2.db").c_str(), F_OK))
{
cerr << string(60, '*') << endl;
cerr << "Old database format detected, "
"will attempt an upgrade..." << endl;
ostringstream command;
command << "sqlite " << get_imms_root("imms.db")
<< " .dump | sqlite3 " << get_imms_root("imms2.db") << endl;
cerr << "Running: " << command.str() << endl;
system(command.str().c_str());
cerr << "If you see errors above verify that you have *both*"
" sqlite 2.8.x" << endl;
cerr << "and 3.0.x installed and rerun the command by hand." << endl;
cerr << string(60, '*') << endl;
}
dbcon.open(get_imms_root("imms2.db"));
sqlite3_create_function(db(), "similar", 2, 1, 0, fuzzy_like, 0, 0);
correlations->attach(get_imms_root("imms.correlations.db"), "C");
acoustic->attach(get_imms_root("imms.acoustic.db"), "A");
}
SqlDb::~SqlDb()
{
close_database();
}
void SqlDb::close_database()
{
correlations.release();
acoustic.release();
dbcon.close();
}
int SqlDb::changes()
{
return db() ? sqlite3_changes(db()) : 0;
}
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