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        static {
041            PropertyEditorHelper.registerCustomEditors();
042        }
043        
044        public XBeanBeanDefinitionParserDelegate(XmlReaderContext readerContext) {
045            super(readerContext);
046            qnameHelper = new XBeanQNameHelper(readerContext);
047        }
048    
049        public Object parsePropertySubElement(Element ele, BeanDefinition bd, String defaultTypeClassName) {
050            if (!isDefaultNamespace(ele.getNamespaceURI())) {
051                return internalParseNestedCustomElement(ele);
052            } 
053            else if (ele.getTagName().equals(QNAME_ELEMENT)) {
054                return parseQNameElement(ele);
055            } 
056            else {
057                return super.parsePropertySubElement(ele, bd, defaultTypeClassName);
058            }
059        }
060    
061        public AbstractBeanDefinition parseBeanDefinitionElement(Element ele, String beanName, BeanDefinition containingBean) {
062            AbstractBeanDefinition bd = super.parseBeanDefinitionElement(ele, beanName, containingBean);
063            qnameHelper.coerceNamespaceAwarePropertyValues(bd, ele);
064            return bd;
065        }
066        
067        public boolean isDefaultNamespace(String namespaceUri) {
068            return (!StringUtils.hasLength(namespaceUri) || 
069                   BEANS_NAMESPACE_URI.equals(namespaceUri)) ||
070                   XBeanNamespaceHandler.SPRING_SCHEMA.equals(namespaceUri) ||
071                   XBeanNamespaceHandler.SPRING_SCHEMA_COMPAT.equals(namespaceUri);
072        }
073        
074        protected Object parseQNameElement(Element element) {
075            return QNameReflectionHelper.createQName(element, getElementText(element));
076        }
077    
078        protected String getElementText(Element element) {
079            StringBuffer buffer = new StringBuffer();
080            NodeList nodeList = element.getChildNodes();
081            for (int i = 0, size = nodeList.getLength(); i < size; i++) {
082                Node node = nodeList.item(i);
083                if (node.getNodeType() == Node.TEXT_NODE) {
084                    buffer.append(node.getNodeValue());
085                }
086            }
087            return buffer.toString();
088        }
089        
090        private Object internalParseNestedCustomElement(Element candidateEle) {
091            try {
092                Method mth = getClass().getSuperclass().getDeclaredMethod("parseNestedCustomElement", new Class[] { Element.class, BeanDefinition.class });
093                mth.setAccessible(true);
094                return mth.invoke(this, new Object[] { candidateEle, null });
095            } catch (Exception e) {
096                if (e instanceof InvocationTargetException && e.getCause() instanceof RuntimeException) {
097                    throw (RuntimeException) e.getCause();
098                }
099                throw (IllegalStateException) new IllegalStateException("Unable to invoke parseNestedCustomElement method").initCause(e);
100            }
101        }
102    
103    }