/**
* Copyright (c) 2000-present Liferay, Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by the Free
* Software Foundation; either version 2.1 of the License, or (at your option)
* any later version.
*
* This library 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 Lesser General Public License for more
* details.
*/
package com.liferay.portal.dao.db;
import com.liferay.portal.dao.orm.hibernate.DialectImpl;
import com.liferay.portal.kernel.dao.db.DB;
import com.liferay.portal.kernel.dao.db.DBFactory;
import com.liferay.portal.kernel.dao.db.DBManager;
import com.liferay.portal.kernel.dao.db.DBType;
import com.liferay.portal.kernel.log.Log;
import com.liferay.portal.kernel.log.LogFactoryUtil;
import com.liferay.portal.kernel.security.pacl.DoPrivileged;
import com.liferay.portal.kernel.util.InfrastructureUtil;
import com.liferay.portal.kernel.util.InstanceFactory;
import com.liferay.portal.kernel.util.ReflectionUtil;
import com.liferay.portal.util.PropsValues;
import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.SQLException;
import java.util.EnumMap;
import java.util.ServiceLoader;
import javax.sql.DataSource;
import org.hibernate.dialect.DB2Dialect;
import org.hibernate.dialect.Dialect;
import org.hibernate.dialect.HSQLDialect;
import org.hibernate.dialect.MySQLDialect;
import org.hibernate.dialect.Oracle8iDialect;
import org.hibernate.dialect.Oracle9Dialect;
import org.hibernate.dialect.PostgreSQLDialect;
import org.hibernate.dialect.SQLServerDialect;
import org.hibernate.dialect.Sybase11Dialect;
import org.hibernate.dialect.SybaseASE15Dialect;
import org.hibernate.dialect.SybaseAnywhereDialect;
import org.hibernate.dialect.SybaseDialect;
/**
* @author Alexander Chow
* @author Brian Wing Shun Chan
*/
@DoPrivileged
@SuppressWarnings("deprecation")
public class DBManagerImpl implements DBManager {
public DBManagerImpl() {
ServiceLoader<DBFactory> serviceLoader = ServiceLoader.load(
DBFactory.class, DBManagerImpl.class.getClassLoader());
for (DBFactory dbFactory : serviceLoader) {
_dbFactories.put(dbFactory.getDBType(), dbFactory);
}
}
@Override
public DB getDB() {
if (_db == null) {
try {
if (_log.isInfoEnabled()) {
_log.info("Using dialect " + PropsValues.HIBERNATE_DIALECT);
}
Dialect dialect = (Dialect)InstanceFactory.newInstance(
PropsValues.HIBERNATE_DIALECT);
setDB(
getDB(
getDBType(dialect),
InfrastructureUtil.getDataSource()));
}
catch (Exception e) {
_log.error(e, e);
}
}
return _db;
}
@Override
public DB getDB(DBType dbType, DataSource dataSource) {
int dbMajorVersion = 0;
int dbMinorVersion = 0;
if (dataSource != null) {
try (Connection connection = dataSource.getConnection()) {
DatabaseMetaData databaseMetaData = connection.getMetaData();
dbMajorVersion = databaseMetaData.getDatabaseMajorVersion();
dbMinorVersion = databaseMetaData.getDatabaseMinorVersion();
}
catch (SQLException sqle) {
return ReflectionUtil.throwException(sqle);
}
}
DBFactory dbCreator = _dbFactories.get(dbType);
if (dbCreator == null) {
throw new IllegalArgumentException(
"Unsupported database type " + dbType);
}
return dbCreator.create(dbMajorVersion, dbMinorVersion);
}
@Override
public DBType getDBType(Object dialect) {
if (dialect instanceof DialectImpl) {
DialectImpl dialectImpl = (DialectImpl)dialect;
dialect = dialectImpl.getWrappedDialect();
}
if (dialect instanceof DB2Dialect) {
return DBType.DB2;
}
if (dialect instanceof HSQLDialect) {
return DBType.HYPERSONIC;
}
if (dialect instanceof MySQLDialect) {
return DBType.MYSQL;
}
if (dialect instanceof Oracle8iDialect ||
dialect instanceof Oracle9Dialect) {
return DBType.ORACLE;
}
if (dialect instanceof PostgreSQLDialect) {
return DBType.POSTGRESQL;
}
if (dialect instanceof SQLServerDialect) {
return DBType.SQLSERVER;
}
if (dialect instanceof Sybase11Dialect ||
dialect instanceof SybaseAnywhereDialect ||
dialect instanceof SybaseASE15Dialect ||
dialect instanceof SybaseDialect) {
return DBType.SYBASE;
}
throw new IllegalArgumentException("Unknown dialect type " + dialect);
}
@Override
public void setDB(DB db) {
_db = db;
if (_log.isDebugEnabled()) {
Class<?> clazz = _db.getClass();
_log.debug(
"Using DB implementation " + clazz.getName() + " for " +
db.getDBType());
}
}
private static final Log _log = LogFactoryUtil.getLog(DBManagerImpl.class);
private DB _db;
private final EnumMap<DBType, DBFactory> _dbFactories = new EnumMap<>(
DBType.class);
}