Spring Framework example source code file (RemoteInvocationUtils.java)

This example Spring Framework source code file (RemoteInvocationUtils.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Spring Framework tags/keywords

hashset, hashset, remoteinvocationutils, remoteinvocationutils, set, stacktraceelement, stacktraceelement, throwable, throwable, util

The Spring Framework RemoteInvocationUtils.java source code

/*
 * Copyright 2002-2007 the original author or authors.
 *
 * 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.springframework.remoting.support;

import java.util.HashSet;
import java.util.Set;

import org.springframework.core.JdkVersion;

/**
 * General utilities for handling remote invocations.
 * 
 * <p>Mainly intended for use within the remoting framework.
 *
 * @author Juergen Hoeller
 * @since 2.0
 */
public abstract class RemoteInvocationUtils {

	/**
	 * Fill the current client-side stack trace into the given exception.
	 * <p>The given exception is typically thrown on the server and serialized
	 * as-is, with the client wanting it to contain the client-side portion
	 * of the stack trace as well. What we can do here is to update the
	 * <code>StackTraceElement array with the current client-side stack
	 * trace, provided that we run on JDK 1.4+.
	 * @param ex the exception to update
	 * @see java.lang.Throwable#getStackTrace()
	 * @see java.lang.Throwable#setStackTrace(StackTraceElement[])
	 */
	public static void fillInClientStackTraceIfPossible(Throwable ex) {
		if (ex != null) {
			StackTraceElement[] clientStack = new Throwable().getStackTrace();
			Set visitedExceptions = new HashSet();
			Throwable exToUpdate = ex;
			while (exToUpdate != null && !visitedExceptions.contains(exToUpdate)) {
				StackTraceElement[] serverStack = exToUpdate.getStackTrace();
				StackTraceElement[] combinedStack = new StackTraceElement[serverStack.length + clientStack.length];
				System.arraycopy(serverStack, 0, combinedStack, 0, serverStack.length);
				System.arraycopy(clientStack, 0, combinedStack, serverStack.length, clientStack.length);
				exToUpdate.setStackTrace(combinedStack);
				visitedExceptions.add(exToUpdate);
				exToUpdate = exToUpdate.getCause();
			}
		}
	}

}