org.eclipse.persistence.internal.sessions.coordination.rmi.RMIRemoteCommandConnectionImpl Maven / Gradle / Ivy
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/*******************************************************************************
* Copyright (c) 1998, 2013 Oracle and/or its affiliates. All rights reserved.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
* which accompanies this distribution.
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* Contributors:
* Oracle - initial API and implementation from Oracle TopLink
******************************************************************************/
package org.eclipse.persistence.internal.sessions.coordination.rmi;
import org.eclipse.persistence.sessions.coordination.Command;
import org.eclipse.persistence.sessions.coordination.RemoteCommandManager;
import org.eclipse.persistence.internal.helper.Helper;
import java.rmi.*;
import java.rmi.server.UnicastRemoteObject;
/**
*
* Purpose: The implementation for the remote RMI object used for
* transporting the remote command.
*
* Description: This implementation class is the RMI remote object that is
* wrapped by the conection abstraction. It is the first point of entry of the
* command into the remote service. It simply hands the command to the RCM to be
* processed.
*
* @see org.eclipse.persistence.sessions.coordination.Command
* @see org.eclipse.persistence.sessions.coordination.RemoteCommandManager
* @since OracleAS TopLink 10g (9.0.4)
*/
public class RMIRemoteCommandConnectionImpl extends UnicastRemoteObject implements RMIRemoteCommandConnection {
RemoteCommandManager rcm;
public RMIRemoteCommandConnectionImpl(RemoteCommandManager rcm) throws RemoteException {
super();
this.rcm = rcm;
}
/**
* INTERNAL:
* No support currently exists for returning the result of the command execution.
* Currently only null is returned on success. On failure an error string is
* returned (to avoid returning an object/exception that may not exist on the
* sending side).
*/
public Object executeCommand(Command command) throws RemoteException {
try {
rcm.processCommandFromRemoteConnection(command);
} catch (Exception e) {
// Log the problem
Object[] args = { Helper.getShortClassName(command), Helper.printStackTraceToString(e) };
rcm.logWarning("error_executing_remote_command", args);
// Return the string in case the exception doesn't exist on the other side
return e.toString();
}
// Success - return null
return null;
}
/**
* INTERNAL:
* No support currently exists for returning the result of the command execution.
* Currently only null is returned on success. On failure an error string is
* returned (to avoid returning an object/exception that may not exist on the
* sending side).
*/
public Object executeCommand(byte[] command) throws RemoteException {
try {
this.rcm.processCommandFromRemoteConnection(command);
} catch (Exception e) {
// Log the problem
Object[] args = { Helper.getShortClassName(command), Helper.printStackTraceToString(e) };
this.rcm.logWarning("error_executing_remote_command", args);
// Return the string in case the exception doesn't exist on the other side
return e.toString();
}
// Success - return null
return null;
}
}