/*******************************************************************************
* Copyright (c) 1998, 2013 Oracle and/or its affiliates. All rights reserved.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
* which accompanies this distribution.
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* Contributors:
* bdoughan - August 5/2009 - 2.0 - Initial implementation
******************************************************************************/
package org.eclipse.persistence.internal.jaxb;
import javax.xml.bind.JAXBElement;
import javax.xml.namespace.QName;
import org.eclipse.persistence.descriptors.ClassDescriptor;
import org.eclipse.persistence.internal.core.helper.CoreClassConstants;
import org.eclipse.persistence.internal.oxm.Root;
import org.eclipse.persistence.mappings.DatabaseMapping;
import org.eclipse.persistence.mappings.converters.Converter;
import org.eclipse.persistence.oxm.XMLMarshaller;
import org.eclipse.persistence.oxm.XMLUnmarshaller;
import org.eclipse.persistence.oxm.mappings.converters.XMLConverter;
import org.eclipse.persistence.sessions.Session;
/**
* Convert between instances of XMLRoot and JAXBElement
*/
public class JAXBElementRootConverter implements XMLConverter {
private Class declaredType;
private XMLConverter nestedConverter;
public JAXBElementRootConverter(Class declaredType) {
this.declaredType = declaredType;
}
public Converter getNestedConverter() {
return nestedConverter;
}
public void setNestedConverter(XMLConverter nestedConverter) {
this.nestedConverter = nestedConverter;
}
public void initialize(DatabaseMapping mapping, Session session) {
if(null != nestedConverter) {
nestedConverter.initialize(mapping, session);
}
}
public Object convertDataValueToObjectValue(Object dataValue, Session session) {
return this.convertDataValueToObjectValue(dataValue, session, null);
}
public Object convertDataValueToObjectValue(Object dataValue, Session session, XMLUnmarshaller unmarshaller) {
if(null != nestedConverter) {
dataValue = nestedConverter.convertDataValueToObjectValue(dataValue, session, unmarshaller);
}
if(dataValue instanceof JAXBElement) {
return dataValue;
} else if(dataValue instanceof Root) {
Root root = (Root)dataValue;
QName name = new QName(root.getNamespaceURI(), root.getLocalName());
dataValue = root.getObject();
if(null == dataValue) {
return createJAXBElement(name, Object.class, dataValue);
}else{
return createJAXBElement(name, declaredType, dataValue);
}
}
return dataValue;
}
public Object convertObjectValueToDataValue(Object objectValue, Session session) {
return this.convertObjectValueToDataValue(objectValue, session, null);
}
public Object convertObjectValueToDataValue(Object objectValue, Session session, XMLMarshaller marshaller) {
if(null != nestedConverter) {
objectValue = nestedConverter.convertObjectValueToDataValue(objectValue, session, marshaller);
}
if(objectValue instanceof JAXBElement) {
ClassDescriptor desc = session.getDescriptor(objectValue);
if(desc == null || objectValue instanceof WrappedValue){
JAXBElement element = (JAXBElement) objectValue;
Root root = new Root();
root.setLocalName(element.getName().getLocalPart());
root.setNamespaceURI(element.getName().getNamespaceURI());
root.setObject(element.getValue());
root.setDeclaredType(element.getDeclaredType());
return root;
}
}
return objectValue;
}
public boolean isMutable() {
return false;
}
private JAXBElement createJAXBElement(QName qname, Class theClass, Object value){
if(value != null && value instanceof JAXBElement){
return (JAXBElement)value;
}
if(CoreClassConstants.XML_GREGORIAN_CALENDAR.isAssignableFrom(theClass)){
theClass = CoreClassConstants.XML_GREGORIAN_CALENDAR;
}else if(CoreClassConstants.DURATION.isAssignableFrom(theClass)){
theClass = CoreClassConstants.DURATION;
}
return new JAXBElement(qname, theClass, value);
}
}