package org.apache.ojb.broker.accesslayer;

 /* Copyright 2002-2005 The Apache Software Foundation

  *

  * 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.

  */

 import org.apache.ojb.broker.metadata.JdbcConnectionDescriptor;

 import java.sql.Connection;

 /**

  * ConnectionFactory is responsible to lookup and release the

  * connections used by the

  * {@link org.apache.ojb.broker.accesslayer.ConnectionManagerIF}

  * implementation.

  *

  * @version $Id: ConnectionFactory.java,v 1.1 2007-08-24 22:17:30 ewestfal Exp $

  * @see org.apache.ojb.broker.accesslayer.ConnectionFactoryPooledImpl

  * @see org.apache.ojb.broker.accesslayer.ConnectionFactoryNotPooledImpl

  * @see org.apache.ojb.broker.accesslayer.ConnectionFactoryDBCPImpl

  * @see org.apache.ojb.broker.accesslayer.ConnectionFactoryManagedImpl

  */

 public interface ConnectionFactory

 {

     /**

      * Lookup a connection from the connection factory implementation.

      */

     Connection lookupConnection(JdbcConnectionDescriptor jcd) throws LookupException;

     /**

      * Release connection - CAUTION: Release every connection after use to avoid abandoned connections.

      * Depending on the used implementation connection will be closed, returned to pool, ...

      */

     void releaseConnection(JdbcConnectionDescriptor jcd, Connection con);

     /**

      * Release all resources

      * used by the implementing class (e.g. connection pool, ...)

      * for the given connection descriptor.

      */

     void releaseAllResources();

 }