/*
* $Id: MapDefinitionParserMutator.java 20321 2010-11-24 15:21:24Z dfeist $
* --------------------------------------------------------------------------------------
* Copyright (c) MuleSoft, Inc. All rights reserved. http://www.mulesoft.com
*
* The software in this package is published under the terms of the CPAL v1.0
* license, a copy of which has been included with this distribution in the
* LICENSE.txt file.
*/
package org.mule.config.spring.parsers.delegate;
import org.mule.config.spring.parsers.MuleChildDefinitionParser;
import org.mule.config.spring.parsers.MuleDefinitionParser;
import org.mule.config.spring.parsers.assembly.BeanAssembler;
import org.mule.config.spring.parsers.assembly.TwoStageMapBeanAssemblerFactory;
import org.mule.config.spring.parsers.assembly.configuration.PropertyConfiguration;
import org.mule.config.spring.parsers.generic.ChildDefinitionParser;
import java.util.HashMap;
import java.util.Map;
import org.springframework.beans.factory.config.BeanDefinition;
import org.springframework.beans.factory.support.AbstractBeanDefinition;
import org.springframework.beans.factory.xml.ParserContext;
import org.w3c.dom.Element;
/**
* This changes a {@link org.mule.config.spring.parsers.generic.ChildDefinitionParser}
* so that it generates a map instead of a bean definition. This is useful for converting
* parsers to work with the object factory (which requires a map).
*/
public class MapDefinitionParserMutator
extends AbstractDelegatingDefinitionParser
implements TwoStageMapBeanAssemblerFactory.BeanAssemblerStore, MuleChildDefinitionParser
{
private String setter;
private Element currentElement;
private Map pendingAssemblers = new HashMap();
public MapDefinitionParserMutator(String setter, ChildDefinitionParser delegate)
{
super(new MuleDefinitionParser[]{delegate});
this.setter = setter;
// this is where we set the callback
delegate.setBeanAssemblerFactory(new TwoStageMapBeanAssemblerFactory(this));
}
public AbstractBeanDefinition muleParse(Element element, ParserContext parserContext)
{
if (pendingAssemblers.containsKey(element))
{
// this is the second call, after the children have been processed
BeanAssembler beanAssembler = (BeanAssembler) pendingAssemblers.get(element);
pendingAssemblers.remove(element);
beanAssembler.insertBeanInTarget(setter);
return null;
}
else
{
// first call, so process in normal manner, but set current element so that
// when the store callback is called, we can associate the assembler with this
// element
currentElement = element;
return getChildDelegate().muleParse(element, parserContext);
}
}
public void saveBeanAssembler(BeanAssembler beanAssembler)
{
// this is called by the bean assembler from inside parseDelegate above.
pendingAssemblers.put(currentElement, beanAssembler);
}
protected ChildDefinitionParser getChildDelegate()
{
return (ChildDefinitionParser) getDelegate(0);
}
public void forceParent(BeanDefinition parent)
{
getChildDelegate().forceParent(parent);
}
public PropertyConfiguration getTargetPropertyConfiguration()
{
return getChildDelegate().getTargetPropertyConfiguration();
}
}