001    // Copyright 2011 The Apache Software Foundation
002    //
003    // Licensed under the Apache License, Version 2.0 (the "License");
004    // you may not use this file except in compliance with the License.
005    // You may obtain a copy of the License at
006    //
007    // http://www.apache.org/licenses/LICENSE-2.0
008    //
009    // Unless required by applicable law or agreed to in writing, software
010    // distributed under the License is distributed on an "AS IS" BASIS,
011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012    // See the License for the specific language governing permissions and
013    // limitations under the License.
014    
015    package org.apache.tapestry5.internal.plastic;
016    
017    import org.apache.tapestry5.plastic.MethodInvocationResult;
018    
019    public class FailureMethodInvocationResult implements MethodInvocationResult
020    {
021        private final Throwable thrown;
022    
023        public FailureMethodInvocationResult(Throwable thrown)
024        {
025            assert thrown != null;
026    
027            this.thrown = thrown;
028        }
029    
030        public Object getReturnValue()
031        {
032            return null;
033        }
034    
035        public void rethrow()
036        {
037            throw new RuntimeException(thrown);
038        }
039    
040        public boolean didThrowCheckedException()
041        {
042            return true;
043        }
044    
045        public <T extends Throwable> T getCheckedException(Class<T> exceptionType)
046        {
047            if (exceptionType.isInstance(thrown))
048                return exceptionType.cast(thrown);
049    
050            return null;
051        }
052    
053    }