/**
* 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.camel.component.javaspace;
import java.io.IOException;
import java.rmi.RMISecurityManager;
import net.jini.core.discovery.LookupLocator;
import net.jini.core.entry.Entry;
import net.jini.core.lookup.ServiceRegistrar;
import net.jini.core.lookup.ServiceTemplate;
import net.jini.core.transaction.Transaction;
import net.jini.core.transaction.TransactionFactory;
import net.jini.core.transaction.server.TransactionManager;
/**
* @version
*/
public class TransactionHelper {
private static TransactionHelper me;
private String uri;
private TransactionManager trManager;
public TransactionHelper(String uri) {
this.uri = uri;
}
public static TransactionHelper getInstance(String uri) {
if (me == null) {
me = new TransactionHelper(uri);
}
return me;
}
/**
* getJiniTransaction Returns a transaction manager proxy.
*
* @param timeout - The length of time our transaction should live before timing out.
* @return Transaction.Created
* @throws Exception can be thrown
*/
public Transaction.Created getJiniTransaction(long timeout) throws Exception {
if (null == trManager) {
trManager = findTransactionManager(uri);
}
Transaction.Created tCreated = TransactionFactory.create(trManager, timeout);
return tCreated;
}
private TransactionManager findTransactionManager(String uri) throws IOException, ClassNotFoundException {
if (System.getSecurityManager() == null) {
System.setSecurityManager(new RMISecurityManager());
}
// Creating service template to find transaction manager service by matching fields.
Class<?>[] classes = new Class<?>[] {net.jini.core.transaction.server.TransactionManager.class};
// Name sn = new Name("*");
ServiceTemplate tmpl = new ServiceTemplate(null, classes, new Entry[] {});
// Creating a lookup locator
LookupLocator locator = new LookupLocator(uri);
ServiceRegistrar sr = locator.getRegistrar();
TransactionManager tm = (TransactionManager) sr.lookup(tmpl);
return tm;
}
}