org.springframework.boot.autoconfigure.orm.jpa.DatabaseLookup Maven / Gradle / Ivy
/*
* Copyright 2012-2018 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.boot.autoconfigure.orm.jpa;
import java.util.Collections;
import java.util.EnumMap;
import java.util.Map;
import javax.sql.DataSource;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.boot.jdbc.DatabaseDriver;
import org.springframework.jdbc.support.JdbcUtils;
import org.springframework.jdbc.support.MetaDataAccessException;
import org.springframework.orm.jpa.vendor.Database;
/**
* Utility to lookup well known {@link Database Databases} from a {@link DataSource}.
*
* @author Eddú Meléndez
* @author Phillip Webb
*/
final class DatabaseLookup {
private static final Log logger = LogFactory.getLog(DatabaseLookup.class);
private static final Map LOOKUP;
static {
Map map = new EnumMap<>(DatabaseDriver.class);
map.put(DatabaseDriver.DERBY, Database.DERBY);
map.put(DatabaseDriver.H2, Database.H2);
map.put(DatabaseDriver.HSQLDB, Database.HSQL);
map.put(DatabaseDriver.MYSQL, Database.MYSQL);
map.put(DatabaseDriver.ORACLE, Database.ORACLE);
map.put(DatabaseDriver.POSTGRESQL, Database.POSTGRESQL);
map.put(DatabaseDriver.SQLSERVER, Database.SQL_SERVER);
map.put(DatabaseDriver.DB2, Database.DB2);
map.put(DatabaseDriver.INFORMIX, Database.INFORMIX);
LOOKUP = Collections.unmodifiableMap(map);
}
private DatabaseLookup() {
}
/**
* Return the most suitable {@link Database} for the given {@link DataSource}.
* @param dataSource the source {@link DataSource}
* @return the most suitable {@link Database}
*/
public static Database getDatabase(DataSource dataSource) {
if (dataSource == null) {
return Database.DEFAULT;
}
try {
String url = JdbcUtils.extractDatabaseMetaData(dataSource, "getURL");
DatabaseDriver driver = DatabaseDriver.fromJdbcUrl(url);
Database database = LOOKUP.get(driver);
if (database != null) {
return database;
}
}
catch (MetaDataAccessException ex) {
logger.warn("Unable to determine jdbc url from datasource", ex);
}
return Database.DEFAULT;
}
}