/**
*
* Copyright 2004 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.
*/
package org.apache.geronimo.naming.reference;
import javax.management.MalformedObjectNameException;
import javax.management.ObjectName;
import org.apache.geronimo.kernel.Kernel;
/**
* @version $Rev: 355877 $ $Date: 2005-12-10 18:48:27 -0800 (Sat, 10 Dec 2005) $
*/
public class ResourceReference extends SimpleAwareReference {
private final String containerId;
private final Class iface;
public ResourceReference(String containerId, Class iface) {
this.containerId = containerId;
this.iface = iface;
}
public String getClassName() {
return iface.getName();
}
public Object getContent() {
Kernel kernel = getKernel();
ObjectName target = null;
try {
target = ObjectName.getInstance(containerId);
} catch (MalformedObjectNameException e) {
throw (IllegalArgumentException) new IllegalArgumentException("Invalid object name in jmxRefAddr: " + containerId).initCause(e);
}
Object proxy = null;
try {
proxy = kernel.invoke(target, "$getResource");
} catch (Exception e) {
throw (IllegalStateException) new IllegalStateException("Could not get proxy").initCause(e);
}
if (proxy == null) {
throw new IllegalStateException("Proxy not returned. Target " + containerId + " not started");
}
if (!iface.isAssignableFrom(proxy.getClass())) {
Class proxyClass = proxy.getClass();
Class[] interfaces = proxyClass.getInterfaces();
StringBuffer message = new StringBuffer();
boolean namesMatch = false;
for (int i = 0; i < interfaces.length; i++) {
Class anInterface = interfaces[i];
if (iface.getName().equals(anInterface.getName())) {
namesMatch = true;
message.append("Proxy implements correct interface: ").append(iface.getName()).append(", but classloaders differ\n");
message.append("lookup interface classloader: ").append(iface.getClassLoader().toString()).append("\n");
message.append("target interface classloader: ").append(anInterface.getClassLoader().toString()).append("\n");
message.append("target proxy classloader: ").append(proxy.getClass().getClassLoader());
break;
}
}
if (!namesMatch) {
message.append("Proxy does not implement an interface named: ").append(iface.getName());
}
throw new ClassCastException(message.toString());
}
return proxy;
}
}