/**
* Redistribution and use of this software and associated documentation
* ("Software"), with or without modification, are permitted provided
* that the following conditions are met:
*
* 1. Redistributions of source code must retain copyright
* statements and notices. Redistributions must also contain a
* copy of this document.
*
* 2. Redistributions in binary form must reproduce the
* above copyright notice, this list of conditions and the
* following disclaimer in the documentation and/or other
* materials provided with the distribution.
*
* 3. The name "Exolab" must not be used to endorse or promote
* products derived from this Software without prior written
* permission of Exoffice Technologies. For written permission,
* please contact info@exolab.org.
*
* 4. Products derived from this Software may not be called "Exolab"
* nor may "Exolab" appear in their names without prior written
* permission of Exoffice Technologies. Exolab is a registered
* trademark of Exoffice Technologies.
*
* 5. Due credit should be given to the Exolab Project
* (http://www.exolab.org/).
*
* THIS SOFTWARE IS PROVIDED BY EXOFFICE TECHNOLOGIES AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT
* NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* EXOFFICE TECHNOLOGIES OR ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*
* Copyright 2003-2005 (C) Exoffice Technologies Inc. All Rights Reserved.
*
* $Id: Locator.java,v 1.3 2005/05/24 05:55:18 tanderson Exp $
*/
package org.exolab.jms.net.orb;
import java.lang.reflect.Constructor;
import java.lang.reflect.InvocationTargetException;
import java.rmi.ConnectIOException;
import java.rmi.RemoteException;
import java.rmi.StubNotFoundException;
import java.rmi.AccessException;
import java.rmi.server.ObjID;
import java.security.Principal;
import java.util.Map;
import org.exolab.jms.net.connector.Connection;
import org.exolab.jms.net.connector.ConnectionFactory;
import org.exolab.jms.net.connector.ResourceException;
import org.exolab.jms.net.connector.SecurityException;
import org.exolab.jms.net.proxy.Delegate;
import org.exolab.jms.net.proxy.Proxy;
import org.exolab.jms.net.registry.Registry;
import org.exolab.jms.net.uri.InvalidURIException;
import org.exolab.jms.net.uri.URIHelper;
/**
* Helper class for constructing proxies for exported objects with a known
* identifier.
*
* @author <a href="mailto:tma@netspace.net.au">Tim Anderson</a>
* @version $Revision: 1.3 $ $Date: 2005/05/24 05:55:18 $
*/
final class Locator {
/**
* Prevent construction of helper class.
*/
private Locator() {
}
/**
* Returns a proxy for a remote {@link Registry}.
*
* @param principal the security principal. May be <code>null</code>
* @param uri the connection URI
* @param factory the connection factory
* @param loader the loader for the proxy class
* @param properties the connection properties. May be <code>null</code>.
* @return a proxy for the registry exported at <code>uri</code>
* @throws InvalidURIException if <code>uri</code> is invalid
* @throws RemoteException if the object cannot be located
*/
public static Registry getRegistry(Principal principal, String uri,
ConnectionFactory factory,
ClassLoader loader, Map properties)
throws InvalidURIException, RemoteException {
ObjID objId = new ObjID(ObjID.REGISTRY_ID);
String className = RegistryImpl.PROXY;
return (Registry) getProxy(objId, principal, uri, factory, className,
loader, properties);
}
/**
* Returns a proxy for the specified object.
*
* @param objId the object's identifier
* @param principal the security principal
* @param uri the connection URI
* @param factory the connection factory
* @param className the proxy class name
* @param loader the loader for the proxy class
* @param properties the connection properties. May be <code>null</code>.
* @return a proxy for <code>objId</code> exported at <code>uri</code>
* @throws InvalidURIException if <code>uri</code> is invalid
* @throws RemoteException if the object cannot be located
*/
public static Proxy getProxy(ObjID objId, Principal principal, String uri,
ConnectionFactory factory,
String className, ClassLoader loader,
Map properties)
throws InvalidURIException, RemoteException {
Proxy proxy;
Connection connection;
try {
connection = factory.getConnection(principal,
URIHelper.parse(uri),
properties);
} catch (SecurityException exception) {
throw new AccessException(exception.getMessage(), exception);
} catch (ResourceException exception) {
throw new ConnectIOException("Failed to create connection",
exception);
}
UnicastDelegate delegate = new UnicastDelegate(objId, connection);
try {
Class proxyClass = loader.loadClass(className);
Constructor constructor = proxyClass.getConstructor(
new Class[]{Delegate.class});
proxy = (Proxy) constructor.newInstance(new Object[]{delegate});
} catch (ClassNotFoundException exception) {
throw new StubNotFoundException(exception.getMessage(), exception);
} catch (IllegalAccessException exception) {
throw new RemoteException(exception.getMessage(), exception);
} catch (InstantiationException exception) {
throw new RemoteException(exception.getMessage(), exception);
} catch (InvocationTargetException exception) {
// unwrap the target exception, if non-null
Throwable target = exception.getTargetException();
if (target != null) {
throw new RemoteException(exception.getMessage(), target);
} else {
throw new RemoteException(exception.getMessage(), exception);
}
} catch (NoSuchMethodException exception) {
throw new RemoteException(exception.getMessage(), exception);
}
return proxy;
}
}