001 /**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. 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 package org.apache.geronimo.gjndi.binding;
018
019 import javax.naming.NamingException;
020 import javax.naming.Name;
021
022 import org.apache.geronimo.gbean.AbstractName;
023 import org.apache.geronimo.gbean.AbstractNameQuery;
024 import org.apache.geronimo.gbean.GBeanInfo;
025 import org.apache.geronimo.gbean.GBeanInfoBuilder;
026 import org.apache.geronimo.kernel.Kernel;
027 import org.apache.geronimo.naming.ResourceSource;
028
029 /**
030 * @version $Rev: 706640 $ $Date: 2008-10-21 14:44:05 +0000 (Tue, 21 Oct 2008) $
031 */
032 public class ResourceBinding extends GBeanFormatBinding {
033
034 public ResourceBinding(String format, String namePattern, String nameInNamespace, AbstractNameQuery abstractNameQuery, Kernel kernel) throws NamingException {
035 super(format, namePattern, nameInNamespace, abstractNameQuery, kernel);
036 }
037
038 /**
039 * Preprocess the value before it is bound. This is usefult for wrapping values with reference objects.
040 * By default, this method simply return the value.
041 *
042 * @param abstractName the abstract name of the gbean to bind
043 * @param value the gbean instance
044 * @return the value to bind or null if there was a problem
045 */
046 @Override
047 protected Object preprocessVaue(AbstractName abstractName, Name name, Object value) {
048 if (!(value instanceof ResourceSource)) {
049 log.info("value at " + abstractName + " is not a ResourceSource: " + value.getClass().getName());
050 return null;
051 }
052 try {
053 return ((ResourceSource) value).$getResource();
054 } catch (Throwable throwable) {
055 log.info("Could not get resource from gbean at " + abstractName,throwable);
056 return null;
057 }
058 }
059
060 public static final GBeanInfo GBEAN_INFO;
061
062 static {
063 GBeanInfoBuilder builder = GBeanInfoBuilder.createStatic(ResourceBinding.class, GBeanFormatBinding.GBEAN_INFO, "Context");
064 GBEAN_INFO = builder.getBeanInfo();
065 }
066
067 public static GBeanInfo getGBeanInfo() {
068 return GBEAN_INFO;
069 }
070 }