/*
* 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 org.springframework.expression.Expression;
import org.springframework.integration.handler.AbstractMessageProducingHandler;
import org.springframework.integration.handler.AbstractReplyProducingMessageHandler;
import org.springframework.integration.splitter.AbstractMessageSplitter;
import org.springframework.integration.splitter.DefaultMessageSplitter;
import org.springframework.integration.splitter.ExpressionEvaluatingSplitter;
import org.springframework.integration.splitter.MethodInvokingSplitter;
import org.springframework.messaging.MessageHandler;
import org.springframework.util.Assert;
import org.springframework.util.StringUtils;
/**
* Factory bean for creating a Message Splitter.
*
* @author Mark Fisher
* @author Iwein Fuld
* @author Gary Russell
* @author David Liu
*/
public class SplitterFactoryBean extends AbstractStandardMessageHandlerFactoryBean {
private volatile Long sendTimeout;
private volatile Boolean requiresReply;
private volatile Boolean applySequence;
private volatile String delimiters;
public void setSendTimeout(Long sendTimeout) {
this.sendTimeout = sendTimeout;
}
public boolean isRequiresReply() {
return this.requiresReply;
}
public void setRequiresReply(boolean requiresReply) {
this.requiresReply = requiresReply;
}
public void setApplySequence(boolean applySequence) {
this.applySequence = applySequence;
}
public void setDelimiters(String delimiters) {
this.delimiters = delimiters;
}
@Override
protected MessageHandler createMethodInvokingHandler(Object targetObject, String targetMethodName) {
Assert.notNull(targetObject, "targetObject must not be null");
AbstractMessageSplitter splitter = this.extractTypeIfPossible(targetObject, AbstractMessageSplitter.class);
if (splitter == null) {
this.checkForIllegalTarget(targetObject, targetMethodName);
splitter = this.createMethodInvokingSplitter(targetObject, targetMethodName);
this.configureSplitter(splitter);
}
else {
Assert.isTrue(!StringUtils.hasText(targetMethodName),
"target method should not be provided when the target "
+ "object is an implementation of AbstractMessageSplitter");
this.configureSplitter(splitter);
if (targetObject instanceof MessageHandler) {
return (MessageHandler) targetObject;
}
}
return splitter;
}
protected AbstractMessageSplitter createMethodInvokingSplitter(Object targetObject, String targetMethodName) {
return (StringUtils.hasText(targetMethodName))
? new MethodInvokingSplitter(targetObject, targetMethodName)
: new MethodInvokingSplitter(targetObject);
}
@Override
protected MessageHandler createExpressionEvaluatingHandler(Expression expression) {
return this.configureSplitter(new ExpressionEvaluatingSplitter(expression));
}
@Override
protected MessageHandler createDefaultHandler() {
return this.configureSplitter(new DefaultMessageSplitter());
}
protected AbstractMessageSplitter configureSplitter(AbstractMessageSplitter splitter) {
this.postProcessReplyProducer(splitter);
return splitter;
}
@Override
protected boolean canBeUsedDirect(AbstractMessageProducingHandler handler) {
return handler instanceof AbstractMessageSplitter
|| (this.applySequence == null && this.delimiters == null);
}
@Override
protected void postProcessReplyProducer(AbstractMessageProducingHandler handler) {
if (this.sendTimeout != null) {
handler.setSendTimeout(this.sendTimeout);
}
if (this.requiresReply != null) {
if (handler instanceof AbstractReplyProducingMessageHandler) {
((AbstractReplyProducingMessageHandler) handler).setRequiresReply(this.requiresReply);
}
else if (this.requiresReply && logger.isDebugEnabled()) {
logger.debug("requires-reply can only be set to AbstractReplyProducingMessageHandler or its subclass, "
+ handler.getComponentName() + " doesn't support it.");
}
}
if (!(handler instanceof AbstractMessageSplitter)) {
Assert.isNull(this.applySequence, "Cannot set applySequence if the referenced bean is "
+ "an AbstractReplyProducingMessageHandler, but not an AbstractMessageSplitter");
Assert.isNull(this.delimiters, "Cannot set delimiters if the referenced bean is not an "
+ "an AbstractReplyProducingMessageHandler, but not an AbstractMessageSplitter");
}
else {
AbstractMessageSplitter splitter = (AbstractMessageSplitter) handler;
if (this.delimiters != null) {
Assert.isInstanceOf(DefaultMessageSplitter.class, splitter,
"The 'delimiters' property is only available for a Splitter definition where no 'ref', "
+ "'expression', or inner bean has been provided.");
((DefaultMessageSplitter) splitter).setDelimiters(this.delimiters);
}
if (this.applySequence != null) {
splitter.setApplySequence(this.applySequence);
}
}
}
@Override
protected Class<? extends MessageHandler> getPreCreationHandlerType() {
return AbstractMessageSplitter.class;
}
}