001    /**
002     *
003     * Copyright 2003-2004 The Apache Software Foundation
004     *
005     *  Licensed under the Apache License, Version 2.0 (the "License");
006     *  you may not use this file except in compliance with the License.
007     *  You may obtain a copy of the License at
008     *
009     *     http://www.apache.org/licenses/LICENSE-2.0
010     *
011     *  Unless required by applicable law or agreed to in writing, software
012     *  distributed under the License is distributed on an "AS IS" BASIS,
013     *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     *  See the License for the specific language governing permissions and
015     *  limitations under the License.
016     */
017    
018    //
019    // This source code implements specifications defined by the Java
020    // Community Process. In order to remain compliant with the specification
021    // DO NOT add / change / or delete method signatures!
022    //
023    package javax.xml.registry;
024    
025    import java.util.Properties;
026    import java.util.Collection;
027    
028    /**
029     * @version $Revision$ $Date$
030     */
031    public abstract class ConnectionFactory {
032        public ConnectionFactory() {
033        }
034    
035        public abstract Connection createConnection() throws JAXRException;
036    
037        public abstract FederatedConnection createFederatedConnection(Collection connections) throws JAXRException;
038    
039        public abstract Properties getProperties() throws JAXRException;
040    
041        public abstract void setProperties(Properties properties) throws JAXRException;
042    
043        public static ConnectionFactory newInstance() throws JAXRException {
044            String className = System.getProperty("javax.xml.registry.ConnectionFactoryClass", "org.apache.ws.scout.registry.ConnectionFactoryImpl");
045            ClassLoader cl = Thread.currentThread().getContextClassLoader();
046            if (cl == null) {
047                cl = ConnectionFactory.class.getClassLoader();
048            }
049            try {
050                Class factoryClass = cl.loadClass(className);
051                return (ConnectionFactory) factoryClass.newInstance();
052            } catch (ClassNotFoundException e) {
053                throw new JAXRException("Unable to load JAXR ConnectionFactoryClass: " + className, e);
054            } catch (InstantiationException e) {
055                throw new JAXRException("Unable to instantiate JAXR ConnectionFactoryClass: " + className, e);
056            } catch (IllegalAccessException e) {
057                throw new JAXRException("Unable to instantiate JAXR ConnectionFactoryClass: " + className, e);
058            }
059        }
060    }