/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.jackrabbit.rmi.repository;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.net.URL;
import javax.jcr.RepositoryException;
import org.apache.jackrabbit.rmi.client.LocalAdapterFactory;
import org.apache.jackrabbit.rmi.remote.RemoteRepository;
/**
* Factory that looks up a remote repository from a given URL.
*
* @since 1.4
*/
public class URLRemoteRepositoryFactory
extends AbstractRemoteRepositoryFactory {
/**
* URL of the remote repository.
*/
private final URL url;
/**
* Creates a factory for looking up a remote repository from a URL.
*
* @param factory local adapter factory
* @param url URL or the remote repository
*/
public URLRemoteRepositoryFactory(LocalAdapterFactory factory, URL url) {
super(factory);
this.url = url;
}
/**
* Looks up and returns a remote repository from the configured URL.
*
* @return remote repository reference
* @throws RepositoryException if the remote repository is not available
*/
protected RemoteRepository getRemoteRepository()
throws RepositoryException {
try {
ObjectInputStream input = new ObjectInputStream(url.openStream());
try {
Object remote = input.readObject();
if (remote instanceof RemoteRepository) {
return (RemoteRepository) remote;
} else if (remote == null) {
throw new RepositoryException(
"Remote repository not found: The resource at "
+ url + " is null");
} else {
throw new RepositoryException(
"Invalid remote repository: The resource at "
+ url + " is an instance of "
+ remote.getClass().getName());
}
} finally {
input.close();
}
} catch (ClassNotFoundException e) {
throw new RepositoryException(
"Invalid remote repository: The resource at " + url
+ " is an instance of an unknown class", e);
} catch (IOException e) {
throw new RepositoryException(
"Remote repository not found: The resource at " + url
+ " could not be retrieved", e);
}
}
}