/*
* Copyright 2002-2015 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.integration.config.annotation;
import java.lang.annotation.Annotation;
import java.lang.reflect.Method;
import java.util.Arrays;
import java.util.List;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.core.annotation.AnnotatedElementUtils;
import org.springframework.integration.annotation.Splitter;
import org.springframework.integration.splitter.AbstractMessageSplitter;
import org.springframework.integration.splitter.MethodInvokingSplitter;
import org.springframework.integration.util.MessagingAnnotationUtils;
import org.springframework.messaging.MessageHandler;
import org.springframework.util.Assert;
import org.springframework.util.StringUtils;
/**
* Post-processor for Methods annotated with {@link Splitter @Splitter}.
*
* @author Mark Fisher
* @author Gary Russell
* @author Artem Bilan
*/
public class SplitterAnnotationPostProcessor extends AbstractMethodAnnotationPostProcessor<Splitter> {
public SplitterAnnotationPostProcessor(ConfigurableListableBeanFactory beanFactory) {
super(beanFactory);
this.messageHandlerAttributes.addAll(Arrays.<String>asList("outputChannel", "applySequence", "adviceChain"));
}
@Override
protected MessageHandler createHandler(Object bean, Method method, List<Annotation> annotations) {
String applySequence = MessagingAnnotationUtils.resolveAttribute(annotations, "applySequence", String.class);
AbstractMessageSplitter splitter;
if (AnnotatedElementUtils.isAnnotated(method, Bean.class.getName())) {
Object target = this.resolveTargetBeanFromMethodWithBeanAnnotation(method);
splitter = this.extractTypeIfPossible(target, AbstractMessageSplitter.class);
if (splitter == null) {
if (target instanceof MessageHandler) {
Assert.hasText(applySequence, "'applySequence' can be applied to 'AbstractMessageSplitter', but " +
"target handler is: " + target.getClass());
return (MessageHandler) target;
}
else {
splitter = new MethodInvokingSplitter(target);
}
}
else {
checkMessageHandlerAttributes(resolveTargetBeanName(method), annotations);
return splitter;
}
}
else {
splitter = new MethodInvokingSplitter(bean, method);
}
if (StringUtils.hasText(applySequence)) {
String applySequenceValue = this.beanFactory.resolveEmbeddedValue(applySequence);
if (StringUtils.hasText(applySequenceValue)) {
splitter.setApplySequence(Boolean.parseBoolean(applySequenceValue));
}
}
this.setOutputChannelIfPresent(annotations, splitter);
return splitter;
}
}