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1   /**
2    *
3    * Copyright 2003-2004 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  //
19  // This source code implements specifications defined by the Java
20  // Community Process. In order to remain compliant with the specification
21  // DO NOT add / change / or delete method signatures!
22  //
23  package javax.xml.registry;
24  
25  import java.util.Properties;
26  import java.util.Collection;
27  
28  /**
29   * @version $Revision$ $Date$
30   */
31  public abstract class ConnectionFactory {
32      public ConnectionFactory() {
33      }
34  
35      public abstract Connection createConnection() throws JAXRException;
36  
37      public abstract FederatedConnection createFederatedConnection(Collection connections) throws JAXRException;
38  
39      public abstract Properties getProperties() throws JAXRException;
40  
41      public abstract void setProperties(Properties properties) throws JAXRException;
42  
43      public static ConnectionFactory newInstance() throws JAXRException {
44          String className = System.getProperty("javax.xml.registry.ConnectionFactoryClass", "org.apache.ws.scout.registry.ConnectionFactoryImpl");
45          ClassLoader cl = Thread.currentThread().getContextClassLoader();
46          if (cl == null) {
47              cl = ConnectionFactory.class.getClassLoader();
48          }
49          try {
50              Class factoryClass = cl.loadClass(className);
51              return (ConnectionFactory) factoryClass.newInstance();
52          } catch (ClassNotFoundException e) {
53              throw new JAXRException("Unable to load JAXR ConnectionFactoryClass: " + className, e);
54          } catch (InstantiationException e) {
55              throw new JAXRException("Unable to instantiate JAXR ConnectionFactoryClass: " + className, e);
56          } catch (IllegalAccessException e) {
57              throw new JAXRException("Unable to instantiate JAXR ConnectionFactoryClass: " + className, e);
58          }
59      }
60  }