| /* |
| * Copyright (c) 1998, 2020 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 v. 2.0 which is available at |
| * http://www.eclipse.org/legal/epl-2.0, |
| * or the Eclipse Distribution License v. 1.0 which is available at |
| * http://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause |
| */ |
| |
| // Contributors: |
| // Oracle - initial API and implementation from Oracle TopLink |
| package org.eclipse.persistence.internal.sessions.coordination.corba; |
| |
| import org.eclipse.persistence.exceptions.CommunicationException; |
| import org.eclipse.persistence.exceptions.RemoteCommandManagerException; |
| import org.eclipse.persistence.internal.helper.SerializationHelper; |
| import org.eclipse.persistence.internal.sessions.coordination.RemoteConnection; |
| import org.eclipse.persistence.sessions.coordination.Command; |
| import org.omg.CORBA.SystemException; |
| |
| /** |
| * <p> |
| * <b>Purpose</b>: Define an Sun CORBA implementation class for the remote object that |
| * can execute a remote command. |
| * <p> |
| * <b>Description</b>: This implementation class is the CORBA transport version of |
| * the connection that is used by the remote command manager to send remote |
| * commands. This object just wraps the CORBAConnectionImpl remote object |
| * |
| * @author Steven Vo |
| * @since OracleAS TopLink 10.0.3 |
| */ |
| public class CORBARemoteCommandConnection extends RemoteConnection { |
| CORBAConnection wrappedConnection; |
| |
| public CORBARemoteCommandConnection(CORBAConnection connection) { |
| super(); |
| this.wrappedConnection = connection; |
| } |
| |
| /** |
| * INTERNAL: |
| * This method invokes the remote object with the Command argument, and causes |
| * it to execute the command in the remote VM. The result is currently assumed |
| * to be either null if successful, or an exception string if an exception was |
| * thrown during execution. |
| * |
| * If a SystemException occurred then a communication problem occurred. In this |
| * case the exception will be wrapped in a CommunicationException and re-thrown. |
| */ |
| @Override |
| public Object executeCommand(Command command) throws CommunicationException { |
| byte[] serializedCmd = null; |
| try { |
| // serialize the Command to be used for remote method call |
| serializedCmd = SerializationHelper.serialize(command); |
| |
| } catch (Exception e) { |
| RemoteCommandManagerException.errorSerializeOrDeserialzeCommand(e); |
| } |
| |
| try { |
| byte[] result = wrappedConnection.executeCommand(serializedCmd); |
| |
| // Error executed command |
| if (result != null) { |
| // return the exeception String |
| return new String(result); |
| } |
| } catch (SystemException exception) { |
| //SystemException indicates that some thing goes wrong when trying to invoke the remote method |
| // before the method is executed. i.e. communication problem. |
| throw CommunicationException.errorInInvocation(exception); |
| } |
| |
| // Success - return null |
| return null; |
| } |
| |
| /** |
| * INTERNAL: |
| * This method invokes the remote object with the Command argument, and causes |
| * it to execute the command in the remote VM. The result is currently assumed |
| * to be either null if successful, or an exception string if an exception was |
| * thrown during execution. |
| * |
| * If a SystemException occurred then a communication problem occurred. In this |
| * case the exception will be wrapped in a CommunicationException and re-thrown. |
| */ |
| @Override |
| public Object executeCommand(byte[] command) throws CommunicationException { |
| try { |
| byte[] result = wrappedConnection.executeCommand(command); |
| |
| // Error executed command |
| if (result != null) { |
| // return the exeception String |
| return new String(result); |
| } |
| } catch (SystemException exception) { |
| //SystemException indicates that some thing goes wrong when trying to invoke the remote method |
| // before the method is executed. i.e. communication problem. |
| throw CommunicationException.errorInInvocation(exception); |
| } |
| |
| // Success - return null |
| return null; |
| } |
| } |