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     */
017    package org.apache.xbean.spring.context.v2c;
018    
019    import java.lang.reflect.InvocationTargetException;
020    import java.lang.reflect.Method;
021    
022    import org.apache.xbean.spring.context.impl.PropertyEditorHelper;
023    import org.apache.xbean.spring.context.impl.QNameReflectionHelper;
024    import org.apache.xbean.spring.context.v2.XBeanNamespaceHandler;
025    import org.springframework.beans.factory.config.BeanDefinition;
026    import org.springframework.beans.factory.support.AbstractBeanDefinition;
027    import org.springframework.beans.factory.xml.BeanDefinitionParserDelegate;
028    import org.springframework.beans.factory.xml.XmlReaderContext;
029    import org.springframework.util.StringUtils;
030    import org.w3c.dom.Element;
031    import org.w3c.dom.Node;
032    import org.w3c.dom.NodeList;
033    
034    public 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    }