001/**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.xbean.spring.context.v2c;
018
019import java.lang.reflect.InvocationTargetException;
020import java.lang.reflect.Method;
021
022import org.apache.xbean.spring.context.impl.PropertyEditorHelper;
023import org.apache.xbean.spring.context.impl.QNameReflectionHelper;
024import org.apache.xbean.spring.context.v2.XBeanNamespaceHandler;
025import org.springframework.beans.factory.config.BeanDefinition;
026import org.springframework.beans.factory.support.AbstractBeanDefinition;
027import org.springframework.beans.factory.xml.BeanDefinitionParserDelegate;
028import org.springframework.beans.factory.xml.XmlReaderContext;
029import org.springframework.util.StringUtils;
030import org.w3c.dom.Element;
031import org.w3c.dom.Node;
032import org.w3c.dom.NodeList;
033
034public class XBeanBeanDefinitionParserDelegate extends BeanDefinitionParserDelegate {
035
036    public static final String QNAME_ELEMENT = "qname";
037    
038    private XBeanQNameHelper qnameHelper;
039    
040    public XBeanBeanDefinitionParserDelegate(XmlReaderContext readerContext) {
041        super(readerContext);
042        qnameHelper = new XBeanQNameHelper(readerContext);
043    }
044
045    public Object parsePropertySubElement(Element ele, BeanDefinition bd, String defaultTypeClassName) {
046        if (!isDefaultNamespace(ele.getNamespaceURI())) {
047            return internalParseNestedCustomElement(ele, bd);
048        } 
049        else if (ele.getTagName().equals(QNAME_ELEMENT)) {
050            return parseQNameElement(ele);
051        } 
052        else {
053            return super.parsePropertySubElement(ele, bd, defaultTypeClassName);
054        }
055    }
056
057    public AbstractBeanDefinition parseBeanDefinitionElement(Element ele, String beanName, BeanDefinition containingBean) {
058        AbstractBeanDefinition bd = super.parseBeanDefinitionElement(ele, beanName, containingBean);
059        qnameHelper.coerceNamespaceAwarePropertyValues(bd, ele);
060        return bd;
061    }
062    
063    public boolean isDefaultNamespace(String namespaceUri) {
064        return (!StringUtils.hasLength(namespaceUri) || 
065               BEANS_NAMESPACE_URI.equals(namespaceUri)) ||
066               XBeanNamespaceHandler.SPRING_SCHEMA.equals(namespaceUri) ||
067               XBeanNamespaceHandler.SPRING_SCHEMA_COMPAT.equals(namespaceUri);
068    }
069    
070    protected Object parseQNameElement(Element element) {
071        return QNameReflectionHelper.createQName(element, getElementText(element));
072    }
073
074    protected String getElementText(Element element) {
075        StringBuffer buffer = new StringBuffer();
076        NodeList nodeList = element.getChildNodes();
077        for (int i = 0, size = nodeList.getLength(); i < size; i++) {
078            Node node = nodeList.item(i);
079            if (node.getNodeType() == Node.TEXT_NODE) {
080                buffer.append(node.getNodeValue());
081            }
082        }
083        return buffer.toString();
084    }
085    
086    private Object internalParseNestedCustomElement(Element candidateEle, BeanDefinition containingBeanDefinition) {
087        try {
088            Method mth = getClass().getSuperclass().getDeclaredMethod("parseNestedCustomElement", new Class[] { Element.class, BeanDefinition.class });
089            mth.setAccessible(true);
090            return mth.invoke(this, new Object[] { candidateEle, containingBeanDefinition });
091        } catch (Exception e) {
092            if (e instanceof InvocationTargetException && e.getCause() instanceof RuntimeException) {
093                throw (RuntimeException) e.getCause();
094            }
095            throw (IllegalStateException) new IllegalStateException("Unable to invoke parseNestedCustomElement method").initCause(e);
096        }
097    }
098
099}