/*******************************************************************************
* Copyright (c) 2014, 2015 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:
* Dmitry Kornilov - Initial implementation
******************************************************************************/
package org.eclipse.persistence.jpa.rs.util.metadatasources;
import org.eclipse.persistence.descriptors.ClassDescriptor;
import org.eclipse.persistence.internal.jpa.weaving.RestCollectionAdapterClassWriter;
import org.eclipse.persistence.internal.jpa.weaving.RestReferenceAdapterV2ClassWriter;
import org.eclipse.persistence.internal.sessions.AbstractSession;
import org.eclipse.persistence.jaxb.metadata.MetadataSource;
import org.eclipse.persistence.jaxb.xmlmodel.JavaType;
import org.eclipse.persistence.jaxb.xmlmodel.JavaType.JavaAttributes;
import org.eclipse.persistence.jaxb.xmlmodel.ObjectFactory;
import org.eclipse.persistence.jaxb.xmlmodel.XmlBindings;
import org.eclipse.persistence.jaxb.xmlmodel.XmlBindings.JavaTypes;
import org.eclipse.persistence.jaxb.xmlmodel.XmlElement;
import org.eclipse.persistence.jaxb.xmlmodel.XmlJavaTypeAdapter;
import org.eclipse.persistence.mappings.CollectionMapping;
import org.eclipse.persistence.mappings.DatabaseMapping;
import org.eclipse.persistence.mappings.DirectCollectionMapping;
import org.eclipse.persistence.mappings.ForeignReferenceMapping;
import javax.xml.bind.JAXBElement;
import java.util.Collection;
import java.util.Map;
/**
* {@link org.eclipse.persistence.jaxb.metadata.MetadataSource} used in the creation of dynamic JAXB contexts
* for applications in JPARS v2.0.
*
* @author Dmitry Kornilov
* @since EclipseLink 2.6.0
*/
public class DynamicXmlV2MetadataSource implements MetadataSource {
private XmlBindings xmlBindings;
/**
* Creates a new DynamicXmlV2MetadataSource.
*
* @param session the session.
* @param packageName the package name to process.
*/
public DynamicXmlV2MetadataSource(AbstractSession session, String packageName) {
final ObjectFactory objectFactory = new ObjectFactory();
xmlBindings = new XmlBindings();
xmlBindings.setPackageName(packageName);
final JavaTypes javaTypes = new JavaTypes();
xmlBindings.setJavaTypes(javaTypes);
for (ClassDescriptor ormDescriptor : session.getProject().getOrderedDescriptors()) {
String descriptorPackageName = "";
int index = ormDescriptor.getJavaClassName().lastIndexOf('.');
if (index > 0) {
descriptorPackageName = ormDescriptor.getJavaClassName().substring(0, index);
}
if (descriptorPackageName.equals(packageName)) {
javaTypes.getJavaType().add(createJAXBType(ormDescriptor, objectFactory));
}
}
}
/**
* Create a javaType to be used by JAXB to map a particular class.
*/
private JavaType createJAXBType(ClassDescriptor classDescriptor, ObjectFactory objectFactory) {
JavaType javaType = new JavaType();
String alias = classDescriptor.getAlias();
if (alias == null || alias.isEmpty()) {
alias = classDescriptor.getJavaClass().getSimpleName();
}
javaType.setName(alias);
final JavaAttributes javaAttributes = new JavaAttributes();
for (DatabaseMapping ormMapping : classDescriptor.getMappings()) {
JAXBElement<XmlElement> element = null;
if (ormMapping instanceof DirectCollectionMapping) {
// Direct mapping -> no adapter
continue;
} else if (ormMapping.isCollectionMapping()) {
// This is a collection mapping -> create collection adapter
element = createCollectionProperty(ormMapping, objectFactory);
} else if (ForeignReferenceMapping.class.isAssignableFrom(ormMapping.getClass())) {
// FK mapping -> create reference adapter
element = createProperty((ForeignReferenceMapping)ormMapping, objectFactory);
}
if (element != null) {
javaAttributes.getJavaAttribute().add(element);
}
}
if (!javaAttributes.getJavaAttribute().isEmpty()) {
javaType.setJavaAttributes(javaAttributes);
}
return javaType;
}
/**
* Create a JAXB property for given collection mapping.
*/
private JAXBElement<XmlElement> createCollectionProperty(DatabaseMapping mapping, ObjectFactory objectFactory) {
final XmlElement xmlElement = new XmlElement();
xmlElement.setJavaAttribute(mapping.getAttributeName());
xmlElement.setType(((CollectionMapping) mapping).getReferenceClassName());
final XmlJavaTypeAdapter adapter = new XmlJavaTypeAdapter();
final String adapterName = RestCollectionAdapterClassWriter.getClassName(((CollectionMapping) mapping).getReferenceClassName());
adapter.setValue(adapterName);
adapter.setType(Collection.class.getName());
xmlElement.setXmlJavaTypeAdapter(adapter);
return objectFactory.createXmlElement(xmlElement);
}
/**
* Create a JAXB property for given reference mapping.
*/
private JAXBElement<XmlElement> createProperty(ForeignReferenceMapping mapping, ObjectFactory objectFactory) {
final String referenceClassName = mapping.getReferenceClassName();
final XmlElement xmlElement = new XmlElement();
xmlElement.setJavaAttribute(mapping.getAttributeName());
xmlElement.setType(referenceClassName);
final String adapterName = RestReferenceAdapterV2ClassWriter.getClassName(referenceClassName);
final XmlJavaTypeAdapter adapter = new XmlJavaTypeAdapter();
adapter.setValue(adapterName);
adapter.setType(referenceClassName);
xmlElement.setXmlJavaTypeAdapter(adapter);
return objectFactory.createXmlElement(xmlElement);
}
/**
* {@inheritDoc}
*/
@Override
public XmlBindings getXmlBindings(Map<String, ?> properties, ClassLoader classLoader) {
return this.xmlBindings;
}
}