/**
* SqlJetConnection.java
* Copyright (C) 2009-2010 TMate Software Ltd
*
* 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; version 2 of the License.
*
* 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.
*
* For information on how to redistribute this software under
* the terms of a license other than GNU General Public License
* contact TMate Software at support@sqljet.com
*/
package org.tmatesoft.sqljet.core.internal.lang;
import java.io.File;
import org.tmatesoft.sqljet.core.SqlJetErrorCode;
import org.tmatesoft.sqljet.core.SqlJetException;
import org.tmatesoft.sqljet.core.schema.ISqlJetSchema;
import org.tmatesoft.sqljet.core.table.ISqlJetRunnableWithLock;
import org.tmatesoft.sqljet.core.table.SqlJetDb;
/**
* @author TMate Software Ltd.
* @author Dmitry Stadnik (dtrace@seznam.cz)
*/
public class SqlJetConnection {
private SqlJetDb db;
protected SqlJetConnection(String fileName) throws SqlJetException {
db = SqlJetDb.open(new File(fileName), false);
}
public static SqlJetConnection open(String fileName) throws SqlJetException {
return new SqlJetConnection(fileName);
}
public SqlJetPreparedStatement prepare(String sql) throws SqlJetException {
if (sql == null || sql.trim().length() == 0) {
throw new SqlJetException(SqlJetErrorCode.ERROR, "SQL statement is empty");
}
return new SqlJetPreparedStatement(db, sql);
}
public void exec(final String sql, final SqlJetExecCallback callback) throws SqlJetException {
db.runWithLock(new ISqlJetRunnableWithLock() {
public Object runWithLock(SqlJetDb db) throws SqlJetException {
SqlJetPreparedStatement stmt = prepare(sql);
try {
while (stmt.step()) {
if (callback != null) {
callback.processRow(stmt);
}
}
} finally {
stmt.close();
}
return null;
}
});
}
public void close() throws SqlJetException {
db.close();
}
public ISqlJetSchema getSchema(String databaseName) throws SqlJetException {
return db.getSchema();
}
}