Coverage Report - org.mule.config.spring.parsers.processors.AbstractChildElementIterator
 
Classes in this File Line Coverage Branch Coverage Complexity
AbstractChildElementIterator
0%
0/17
0%
0/8
1.75
 
 1  
 /*
 2  
  * Copyright (c) MuleSoft, Inc.  All rights reserved.  http://www.mulesoft.com
 3  
  * The software in this package is published under the terms of the CPAL v1.0
 4  
  * license, a copy of which has been included with this distribution in the
 5  
  * LICENSE.txt file.
 6  
  */
 7  
 package org.mule.config.spring.parsers.processors;
 8  
 
 9  
 import org.mule.config.spring.MuleHierarchicalBeanDefinitionParserDelegate;
 10  
 import org.mule.config.spring.parsers.PostProcessor;
 11  
 import org.mule.config.spring.parsers.assembly.BeanAssembler;
 12  
 import org.mule.config.spring.parsers.assembly.BeanAssemblerFactory;
 13  
 import org.mule.config.spring.parsers.assembly.configuration.PropertyConfiguration;
 14  
 import org.mule.config.spring.util.SpringXMLUtils;
 15  
 
 16  
 import org.springframework.beans.factory.xml.BeanDefinitionParserDelegate;
 17  
 import org.springframework.beans.factory.xml.ParserContext;
 18  
 import org.w3c.dom.Element;
 19  
 import org.w3c.dom.Node;
 20  
 import org.w3c.dom.NodeList;
 21  
 
 22  
 /**
 23  
  * <p>
 24  
  * This iterates over child elements, parsing them and calling
 25  
  * {@link #insertBean(BeanAssembler, Object, Element, Element)}.
 26  
  * </p>
 27  
  * <p>
 28  
  * There are two ways we can parse a tree of elements - have an external loop or let
 29  
  * each parser iterate over its own children. Mule uses the first strategy, but some
 30  
  * (most? all?) third party BDPs use the second. This processor lets us use third
 31  
  * party beans inside the Mule framework.
 32  
  * </p>
 33  
  * <p>
 34  
  * So this is a very specialised parser that should only be used when trying to
 35  
  * inter-operate with beans from third party packages which themselves control how
 36  
  * their children are parsed.
 37  
  * </p>
 38  
  * <p>
 39  
  * Since for Mule beans the iteration over child elements (at least currently) is
 40  
  * done via {@link MuleHierarchicalBeanDefinitionParserDelegate} the calling parser
 41  
  * needs to set the flag
 42  
  * {@link MuleHierarchicalBeanDefinitionParserDelegate#MULE_NO_RECURSE} - this stops
 43  
  * the Mule recursion from working.
 44  
  * </p>
 45  
  * <p>
 46  
  * NOTE - IMHO (ac) the Mule approach was probably a mistake; this processor could be
 47  
  * used as a way to slowly migrate the Mule code to the more common approach.
 48  
  * </p>
 49  
  */
 50  
 public abstract class AbstractChildElementIterator implements PostProcessor
 51  
 {
 52  
 
 53  
     private BeanAssemblerFactory beanAssemblerFactory;
 54  
     private PropertyConfiguration configuration;
 55  
 
 56  
     public AbstractChildElementIterator(BeanAssemblerFactory beanAssemblerFactory, PropertyConfiguration configuration)
 57  0
     {
 58  0
         this.beanAssemblerFactory = beanAssemblerFactory;
 59  0
         this.configuration = configuration;
 60  0
     }
 61  
 
 62  
     public void postProcess(ParserContext context, BeanAssembler assembler, Element element)
 63  
     {
 64  0
         NodeList children = element.getChildNodes();
 65  0
         for (int i = 0; i < children.getLength(); ++i)
 66  
         {
 67  0
             Node child = children.item(i);
 68  0
             if (child.getNodeType() == Node.ELEMENT_NODE)
 69  
             {
 70  0
                 processChildElement(context, assembler, element, (Element) child);
 71  
             }
 72  
         }
 73  0
     }
 74  
 
 75  
     protected void processChildElement(ParserContext context, BeanAssembler assembler, Element parent, Element child)
 76  
     {
 77  0
         Object childBean = null;
 78  0
         if (SpringXMLUtils.isBeansNamespace(child)
 79  
             || SpringXMLUtils.isLocalName(child, BeanDefinitionParserDelegate.REF_ELEMENT))
 80  
         {
 81  0
             childBean = context.getDelegate().parsePropertySubElement(child, null);
 82  
         }
 83  
         else
 84  
         {
 85  0
             childBean = context.getDelegate().parseCustomElement(child,
 86  
                 assembler.getBean().getBeanDefinition());
 87  
         }
 88  0
         BeanAssembler targetAssembler = beanAssemblerFactory.newBeanAssembler(null, null, configuration,
 89  
             assembler.getBean().getRawBeanDefinition());
 90  0
         insertBean(targetAssembler, childBean, parent, child);
 91  0
     }
 92  
 
 93  
     protected abstract void insertBean(BeanAssembler targetAssembler, Object childBean, Element parent, Element child);
 94  
 
 95  
 }