| // Copyright 2011 The Apache Software Foundation |
| // |
| // 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.apache.tapestry5.internal.plastic; |
| |
| import java.lang.annotation.Annotation; |
| import java.lang.reflect.Method; |
| |
| import org.apache.tapestry5.plastic.InstanceContext; |
| import org.apache.tapestry5.plastic.MethodInvocation; |
| |
| public abstract class AbstractMethodInvocation implements MethodInvocation |
| { |
| private final Object instance; |
| |
| private final InstanceContext instanceContext; |
| |
| private final MethodInvocationBundle bundle; |
| |
| private int adviceIndex; |
| |
| protected AbstractMethodInvocation(Object instance, InstanceContext instanceContext, MethodInvocationBundle bundle) |
| { |
| this.instance = instance; |
| this.instanceContext = instanceContext; |
| this.bundle = bundle; |
| } |
| |
| private Exception checkedException; |
| |
| /** |
| * Invoked from the implementation of {@link MethodInvocation#setReturnValue(Object)}. |
| */ |
| protected void clearCheckedException() |
| { |
| checkedException = null; |
| } |
| |
| @Override |
| public void rethrow() |
| { |
| if (checkedException != null) |
| throw new RuntimeException(checkedException); |
| } |
| |
| @Override |
| public boolean didThrowCheckedException() |
| { |
| return checkedException != null; |
| } |
| |
| @Override |
| public <T extends Throwable> T getCheckedException(Class<T> exceptionType) |
| { |
| assert exceptionType != null; |
| |
| if (exceptionType.isInstance(checkedException)) |
| return exceptionType.cast(checkedException); |
| |
| return null; |
| } |
| |
| @Override |
| public Object getInstance() |
| { |
| return instance; |
| } |
| |
| @Override |
| public InstanceContext getInstanceContext() |
| { |
| return instanceContext; |
| } |
| |
| @Override |
| public MethodInvocation proceed() |
| { |
| if (adviceIndex == bundle.advice.length) |
| proceedToAdvisedMethod(); |
| else |
| bundle.advice[adviceIndex++].advise(this); |
| |
| return this; |
| } |
| |
| @Override |
| public MethodInvocation setCheckedException(Exception exception) |
| { |
| checkedException = exception; |
| |
| return this; |
| } |
| |
| @Override |
| public <T extends Annotation> boolean hasAnnotation(Class<T> annotationType) |
| { |
| return getAnnotation(annotationType) != null; |
| } |
| |
| @Override |
| public <T extends Annotation> T getAnnotation(Class<T> annotationType) |
| { |
| return getMethod().getAnnotation(annotationType); |
| } |
| |
| @Override |
| public Method getMethod() |
| { |
| return bundle.getMethod(getInstance()); |
| } |
| |
| /** This is implemented in a runtime-generated subclass. */ |
| protected abstract void proceedToAdvisedMethod(); |
| } |