jlibs.core.lang.ThrowableTask Maven / Gradle / Ivy
/**
* Copyright 2015 Santhosh Kumar Tekuri
*
* The JLibs authors license this file to you 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 jlibs.core.lang;
/**
* @author Santhosh Kumar T
*/
public abstract class ThrowableTask{
private Class exceptionClass;
private R r;
private Exception ex;
public ThrowableTask(Class exceptionClass){
this.exceptionClass = exceptionClass;
}
public abstract R run() throws E;
@SuppressWarnings({"unchecked"})
public R getResult() throws E{
if(exceptionClass.isInstance(ex))
throw (E)ex;
else if(ex!=null)
throw new RuntimeException(ex);
return r;
}
public Exception getException(){
return ex;
}
public Runnable asRunnable(){
return new Runnable(){
public void run(){
try{
r = ThrowableTask.this.run();
}catch(Exception ex){
ThrowableTask.this.ex = ex;
}
}
};
}
}