1 package org.apache.ojb.broker.accesslayer;
2
3 /* Copyright 2002-2005 The Apache Software Foundation
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 */
17
18 import org.apache.ojb.broker.util.factory.ConfigurableFactory;
19
20 /**
21 * Factory for {@link org.apache.ojb.broker.accesslayer.ConnectionFactory} implementations.
22 * <br/>
23 * See also {@link org.apache.ojb.broker.accesslayer.ConnectionManagerFactory}
24 *
25 * @version $Id: ConnectionFactoryFactory.java,v 1.1 2007-08-24 22:17:30 ewestfal Exp $
26 */
27 public class ConnectionFactoryFactory extends ConfigurableFactory
28 {
29 private static ConnectionFactoryFactory singleton = new ConnectionFactoryFactory();
30 private ConnectionFactory conFactory;
31
32 public synchronized static ConnectionFactoryFactory getInstance()
33 {
34 return singleton;
35 }
36
37 /**
38 * Returns the used {@link ConnectionFactory} implementation. Currently each call
39 * returns the same implementation instance.
40 */
41 public synchronized ConnectionFactory createConnectionFactory()
42 {
43 if (conFactory == null)
44 {
45 conFactory = (ConnectionFactory) createNewInstance();
46 }
47 return conFactory;
48 }
49
50 protected String getConfigurationKey()
51 {
52 return "ConnectionFactoryClass";
53 }
54 }