Java tutorial
/* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, * software distributed under the License is distributed on an * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY * KIND, either express or implied. See the License for the * specific language governing permissions and limitations * under the License. */ package org.apache.axis2.jaxws.message.databinding.impl; import org.apache.axiom.om.OMElement; import org.apache.axiom.om.OMSourcedElement; import org.apache.axis2.datasource.jaxb.JAXBDSContext; import org.apache.axis2.datasource.jaxb.JAXBDataSource; import org.apache.axis2.jaxws.ExceptionFactory; import org.apache.axis2.jaxws.i18n.Messages; import org.apache.axis2.jaxws.message.Block; import org.apache.axis2.jaxws.message.databinding.JAXBBlockContext; import org.apache.axis2.jaxws.message.factory.JAXBBlockFactory; import org.apache.axis2.jaxws.message.impl.BlockFactoryImpl; import org.apache.axis2.jaxws.utility.XMLRootElementUtil; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import javax.xml.bind.JAXBException; import javax.xml.namespace.QName; import javax.xml.stream.XMLStreamException; import javax.xml.ws.WebServiceException; /** JAXBBlockFactoryImpl Creates a JAXBBlock */ public class JAXBBlockFactoryImpl extends BlockFactoryImpl implements JAXBBlockFactory { private static final Log log = LogFactory.getLog(JAXBBlockFactoryImpl.class); /** Default Constructor required for Factory */ public JAXBBlockFactoryImpl() { super(); } /* (non-Javadoc) * @see org.apache.axis2.jaxws.message.BlockFactory#createFrom(org.apache.axiom.om.OMElement, java.lang.Object, javax.xml.namespace.QName) */ public Block createFrom(OMElement omElement, Object context, QName qName) throws XMLStreamException, WebServiceException { // The context for a JAXBFactory must be non-null and should be a JAXBBlockContext. if (context == null) { // JAXWS spec 4.3.4 conformance requires a WebServiceException whose cause is JAXBException throw ExceptionFactory.makeWebServiceException( new JAXBException(Messages.getMessage("JAXBBlockFactoryErr1", "null"))); } else if (context instanceof JAXBBlockContext) { ; } else { // JAXWS spec 4.3.4 conformance requires a WebServiceException whose cause is JAXBException throw ExceptionFactory.makeWebServiceException( new JAXBException(Messages.getMessage("JAXBBlockFactoryErr1", context.getClass().getName()))); } if (qName == null) { qName = omElement.getQName(); } if (omElement instanceof OMSourcedElement) { if (((OMSourcedElement) omElement).getDataSource() instanceof JAXBDataSource) { JAXBDataSource ds = (JAXBDataSource) ((OMSourcedElement) omElement).getDataSource(); JAXBDSContext dsContext = ds.getContext(); try { if (dsContext.getJAXBContext() == ((JAXBBlockContext) context).getJAXBContext()) { // Shortcut, use existing JAXB object Object jaxb = ds.getObject(); return new JAXBBlockImpl(jaxb, (JAXBBlockContext) context, qName, this); } } catch (JAXBException e) { if (log.isDebugEnabled()) { log.debug("Falling back to using normal unmarshalling approach. " + e.getMessage()); } } } else if (((OMSourcedElement) omElement).getDataSource() instanceof JAXBBlockImpl) { JAXBBlockImpl block = (JAXBBlockImpl) ((OMSourcedElement) omElement).getDataSource(); JAXBBlockContext blockContext = (JAXBBlockContext) block.getBusinessContext(); try { if (blockContext.getJAXBContext() == ((JAXBBlockContext) context).getJAXBContext()) { // Shortcut, use existing JAXB object Object jaxb = block.getObject(); return new JAXBBlockImpl(jaxb, (JAXBBlockContext) context, qName, this); } } catch (JAXBException e) { if (log.isDebugEnabled()) { log.debug("Falling back to using normal unmarshalling approach. " + e.getMessage()); } } } } return new JAXBBlockImpl(omElement, (JAXBBlockContext) context, qName, this); } /* (non-Javadoc) * @see org.apache.axis2.jaxws.message.BlockFactory#createFrom(java.lang.Object, java.lang.Object, javax.xml.namespace.QName) */ public Block createFrom(Object businessObject, Object context, QName qName) throws WebServiceException { // The context must be non-null and should be a JAXBBlockContext. // For legacy reasons, a JAXBContext is also supported (and wrapped into a JAXBBlockContext) if (context == null) { // JAXWS spec 4.3.4 conformance requires a WebServiceException whose cause is JAXBException throw ExceptionFactory.makeWebServiceException( new JAXBException(Messages.getMessage("JAXBBlockFactoryErr1", "null"))); } else if (context instanceof JAXBBlockContext) { ; } else { // JAXWS spec 4.3.4 conformance requires a WebServiceException whose cause is JAXBException throw ExceptionFactory.makeWebServiceException( new JAXBException(Messages.getMessage("JAXBBlockFactoryErr1", context.getClass().getName()))); } // The business object must be either a JAXBElement or a block with an @XmlRootElement qname. // (Checking this is expensive, so it is assumed) // The input QName must be set otherwise we have to look it up, which kills performance. if (qName == null) { qName = XMLRootElementUtil.getXmlRootElementQNameFromObject(businessObject); } try { return new JAXBBlockImpl(businessObject, (JAXBBlockContext) context, qName, this); } catch (JAXBException e) { throw ExceptionFactory.makeWebServiceException(e); } } public boolean isElement() { return true; } }