com.googlecode.catchexception.internal.ExceptionHolder Maven / Gradle / Ivy
/**
* Copyright (C) 2011 [email protected]
*
* 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 com.googlecode.catchexception.internal;
import java.lang.ref.WeakReference;
/**
* Holds a caught exception {@link ThreadLocal per Thread}.
*
* @author rwoo
*
*/
public class ExceptionHolder {
/**
* The container for the most recently caught exception.
*
* There is no need to use {@link WeakReference weak references} here as all
* the code is for testing so that we don't have to care about memory leaks.
*/
private static final ThreadLocal caughtException = new ThreadLocal();
/**
* Saves the given exception in {@link #caughtException}.
*
* @param
* the type of the caught exception
* @param caughtException
* the caught exception
*/
public static void set(E caughtException) {
ExceptionHolder.caughtException.set(caughtException);
}
/**
* @param
* the type of the caught exception
* @return Returns the caught exception. Returns null if there is no
* exception caught.
*/
@SuppressWarnings("unchecked")
public static E get() {
return (E) caughtException.get();
}
}