// Copyright 2005 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.tapestry.vlib.services;
import java.rmi.RemoteException;
import org.apache.hivemind.ApplicationRuntimeException;
import org.apache.hivemind.lib.RemoteExceptionCoordinator;
/**
* Handles remote exceptions and retries.
*
* @author Howard M. Lewis Ship
* @since 4.0
*/
public class RemoteTemplateImpl implements RemoteTemplate
{
private final static int MAX_ATTEMPTS = 2;
private RemoteExceptionCoordinator _coordinator;
public Object doRemote(RemoteCallback callback, String errorMessage)
{
int attempt = 1;
while (true)
{
try
{
return callback.remoteCallback();
}
catch (RemoteException ex)
{
_coordinator.fireRemoteExceptionDidOccur(callback, ex);
if (attempt++ < MAX_ATTEMPTS)
continue;
throw new ApplicationRuntimeException(errorMessage, ex);
}
}
}
public void setCoordinator(RemoteExceptionCoordinator coordinator)
{
_coordinator = coordinator;
}
}