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Apache Commons DBCP software implements Database Connection Pooling
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.commons.dbcp2;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.Properties;
/**
* A {@link DriverManager}-based implementation of {@link ConnectionFactory}.
*
* @author Rodney Waldhoff
* @author Ignacio J. Ortega
* @author Dirk Verbeeck
* @since 2.0
*/
public class DriverManagerConnectionFactory implements ConnectionFactory {
static {
// Related to DBCP-212
// Driver manager does not sync loading of drivers that use the service
// provider interface. This will cause issues is multi-threaded
// environments. This hack makes sure the drivers are loaded before
// DBCP tries to use them.
DriverManager.getDrivers();
}
/**
* Constructor for DriverManagerConnectionFactory.
* @param connectUri a database url of the form
* jdbc:subprotocol:subname
* @since 2.2
*/
public DriverManagerConnectionFactory(final String connectUri) {
_connectUri = connectUri;
_props = new Properties();
}
/**
* Constructor for DriverManagerConnectionFactory.
* @param connectUri a database url of the form
* jdbc:subprotocol:subname
* @param props a list of arbitrary string tag/value pairs as
* connection arguments; normally at least a "user" and "password"
* property should be included.
*/
public DriverManagerConnectionFactory(final String connectUri, final Properties props) {
_connectUri = connectUri;
_props = props;
}
/**
* Constructor for DriverManagerConnectionFactory.
* @param connectUri a database url of the form
* jdbc:subprotocol:subname
* @param uname the database user
* @param passwd the user's password
*/
public DriverManagerConnectionFactory(final String connectUri, final String uname, final String passwd) {
_connectUri = connectUri;
_uname = uname;
_passwd = passwd;
}
@Override
public Connection createConnection() throws SQLException {
if(null == _props) {
if(_uname == null && _passwd == null) {
return DriverManager.getConnection(_connectUri);
}
return DriverManager.getConnection(_connectUri,_uname,_passwd);
}
return DriverManager.getConnection(_connectUri,_props);
}
private String _connectUri = null;
private String _uname = null;
private String _passwd = null;
private Properties _props = null;
}