/*
* Copyright 2002-2016 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.integration.config;
import java.lang.reflect.Method;
import org.springframework.beans.factory.FactoryBean;
import org.springframework.beans.factory.InitializingBean;
import org.springframework.integration.IntegrationMessageHeaderAccessor;
import org.springframework.integration.aggregator.CorrelationStrategy;
import org.springframework.integration.aggregator.HeaderAttributeCorrelationStrategy;
import org.springframework.integration.aggregator.MethodInvokingCorrelationStrategy;
import org.springframework.integration.util.MessagingAnnotationUtils;
import org.springframework.util.StringUtils;
/**
* Convenience factory for XML configuration of a {@link CorrelationStrategy}.
* Encapsulates the knowledge of the default strategy and search algorithms for POJO and annotated methods.
*
* @author Dave Syer
* @author Artem Bilan
*
*/
public class CorrelationStrategyFactoryBean implements FactoryBean<CorrelationStrategy>, InitializingBean {
private Object target;
private String methodName;
private CorrelationStrategy strategy =
new HeaderAttributeCorrelationStrategy(IntegrationMessageHeaderAccessor.CORRELATION_ID);
public CorrelationStrategyFactoryBean() {
}
public void setTarget(Object target) {
this.target = target;
}
public void setMethodName(String methodName) {
this.methodName = methodName;
}
@Override
public void afterPropertiesSet() throws Exception {
if (this.target instanceof CorrelationStrategy && !StringUtils.hasText(this.methodName)) {
this.strategy = (CorrelationStrategy) this.target;
return;
}
if (this.target != null) {
if (StringUtils.hasText(this.methodName)) {
this.strategy = new MethodInvokingCorrelationStrategy(this.target, this.methodName);
}
else {
Method method = MessagingAnnotationUtils.findAnnotatedMethod(this.target,
org.springframework.integration.annotation.CorrelationStrategy.class);
if (method != null) {
this.strategy = new MethodInvokingCorrelationStrategy(this.target, method);
}
}
}
}
public CorrelationStrategy getObject() throws Exception {
return this.strategy;
}
public Class<?> getObjectType() {
return CorrelationStrategy.class;
}
public boolean isSingleton() {
return true;
}
}