/*
* Copyright 2015-2016 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.statemachine.processor;
import java.lang.annotation.Annotation;
import java.lang.reflect.Method;
/**
* A simple {@link StateMachineRuntimeProcessor} implementation using
* methods from a state machine protected bean.
*
* @author Janne Valkealahti
*
* @param <T> the return type
* @param <S> the type of state
* @param <E> the type of event
*/
public class MethodInvokingStateMachineRuntimeProcessor<T, S, E> implements StateMachineRuntimeProcessor<T, S, E> {
private final StateMachineMethodInvokerHelper<T, S, E> delegate;
/**
* Instantiates a new method invoking state machine runtime processor.
*
* @param targetObject the target object
* @param method the method
*/
public MethodInvokingStateMachineRuntimeProcessor(Object targetObject, Method method) {
delegate = new StateMachineMethodInvokerHelper<T, S, E>(targetObject, method);
}
/**
* Instantiates a new method invoking state machine runtime processor.
*
* @param targetObject the target object
* @param methodName the method name
*/
public MethodInvokingStateMachineRuntimeProcessor(Object targetObject, String methodName) {
delegate = new StateMachineMethodInvokerHelper<T, S, E>(targetObject, methodName);
}
/**
* Instantiates a new method invoking state machine runtime processor.
*
* @param targetObject the target object
* @param annotationType the annotation type
*/
public MethodInvokingStateMachineRuntimeProcessor(Object targetObject, Class<? extends Annotation> annotationType) {
delegate = new StateMachineMethodInvokerHelper<T, S, E>(targetObject, annotationType);
}
@Override
public T process(StateMachineRuntime<S, E> stateMachineRuntime) {
try {
return delegate.process(stateMachineRuntime);
} catch (Throwable e) {
throw new RuntimeException("Error processing bean", e);
}
}
}