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/*******************************************************************************
* Copyright (c) 2007, 2010 Oracle. All rights reserved.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0, which accompanies this distribution
* and is available at http://www.eclipse.org/legal/epl-v10.html.
*
* Contributors:
* Oracle - initial API and implementation
******************************************************************************/
package org.eclipse.jpt.core.internal.jpa1.context.orm;
import java.util.List;
import org.eclipse.core.resources.IResource;
import org.eclipse.jpt.core.JpaFile;
import org.eclipse.jpt.core.JpaResourceType;
import org.eclipse.jpt.core.JpaStructureNode;
import org.eclipse.jpt.core.JptCorePlugin;
import org.eclipse.jpt.core.context.MappingFileRoot;
import org.eclipse.jpt.core.context.PersistentType;
import org.eclipse.jpt.core.context.java.JavaPersistentType;
import org.eclipse.jpt.core.context.orm.EntityMappings;
import org.eclipse.jpt.core.context.orm.OrmPersistentType;
import org.eclipse.jpt.core.context.orm.OrmXml;
import org.eclipse.jpt.core.context.persistence.MappingFileRef;
import org.eclipse.jpt.core.internal.context.orm.AbstractOrmXmlContextNode;
import org.eclipse.jpt.core.resource.orm.XmlEntityMappings;
import org.eclipse.jpt.core.resource.xml.JpaXmlResource;
import org.eclipse.jpt.core.utility.TextRange;
import org.eclipse.jpt.utility.internal.iterables.EmptyIterable;
import org.eclipse.wst.validation.internal.provisional.core.IMessage;
import org.eclipse.wst.validation.internal.provisional.core.IReporter;
/**
* JPA <code>orm.xml</code> file.
*/
public class GenericOrmXml
extends AbstractOrmXmlContextNode
implements OrmXml
{
/**
* If the XML resource's content type changes, the mapping file
* ref will dispose its current mapping file and build a new one.
*/
protected final JpaXmlResource xmlResource;
/**
* The resouce type will only change if the XML file's version changes
* (since, if the content type changes, we get garbage-collected).
*/
protected JpaResourceType resourceType;
protected EntityMappings entityMappings;
public GenericOrmXml(MappingFileRef parent, JpaXmlResource xmlResource) {
super(parent);
this.checkXmlResource(xmlResource);
this.xmlResource = xmlResource;
this.resourceType = xmlResource.getResourceType();
XmlEntityMappings xmlEntityMappings = (XmlEntityMappings) xmlResource.getRootObject();
if (xmlEntityMappings != null) {
this.entityMappings = this.buildEntityMappings(xmlEntityMappings);
}
}
protected void checkXmlResource(JpaXmlResource resource) {
if (resource == null) {
throw new NullPointerException();
}
if ( ! resource.getContentType().isKindOf(JptCorePlugin.MAPPING_FILE_CONTENT_TYPE)) {
throw new IllegalArgumentException("Content type is not 'mapping file': " + resource); //$NON-NLS-1$
}
}
// ********** overrides **********
@Override
public MappingFileRef getParent() {
return (MappingFileRef) super.getParent();
}
@Override
public IResource getResource() {
return this.xmlResource.getFile();
}
@Override
public JpaResourceType getResourceType() {
return this.resourceType;
}
// ********** JpaStructureNode implementation **********
public String getId() {
// isn't actually displayed, so needs no details page
return null;
}
public JpaStructureNode getStructureNode(int textOffset) {
if ((this.entityMappings != null) && this.entityMappings.containsOffset(textOffset)) {
return this.entityMappings.getStructureNode(textOffset);
}
return this;
}
// never actually selected
public TextRange getSelectionTextRange() {
return TextRange.Empty.instance();
}
public void dispose() {
if (this.entityMappings != null) {
this.entityMappings.dispose();
}
JpaFile jpaFile = getJpaFile();
if (jpaFile != null) {
jpaFile.removeRootStructureNode(this.xmlResource);
}
}
// ********** MappingFile implementation **********
public JpaXmlResource getXmlResource() {
return this.xmlResource;
}
public MappingFileRoot getRoot() {
return this.entityMappings;
}
public OrmPersistentType getPersistentType(String name) {
return (this.entityMappings == null) ? null : this.entityMappings.getPersistentType(name);
}
// ********** PersistentTypeContainer implementation **********
/**
* All orm.xml mapping files must be able to generate a static metamodel
* because 1.0 orm.xml files can be referenced from 2.0 persistence.xml
* files.
*/
public Iterable<? extends PersistentType> getPersistentTypes() {
return (this.entityMappings != null) ? this.entityMappings.getPersistentTypes() : EmptyIterable.<JavaPersistentType> instance();
}
// ********** entity mappings **********
public EntityMappings getEntityMappings() {
return this.entityMappings;
}
protected void setEntityMappings(EntityMappings entityMappings) {
EntityMappings old = this.entityMappings;
this.entityMappings = entityMappings;
this.firePropertyChanged(ENTITY_MAPPINGS_PROPERTY, old, entityMappings);
}
protected EntityMappings buildEntityMappings(XmlEntityMappings xmlEntityMappings) {
return this.getXmlContextNodeFactory().buildEntityMappings(this, xmlEntityMappings);
}
// ********** updating **********
public void update() {
XmlEntityMappings oldXmlEntityMappings = (this.entityMappings == null) ? null : this.entityMappings.getXmlEntityMappings();
XmlEntityMappings newXmlEntityMappings = (XmlEntityMappings) this.xmlResource.getRootObject();
JpaResourceType newResourceType = this.xmlResource.getResourceType();
// If the old and new xml entity mappings are different instances,
// we scrap the old context entity mappings and rebuild. This can
// happen when the resource model drastically changes, such as
// a cvs checkout or an edit reversion.
if ((oldXmlEntityMappings != newXmlEntityMappings)
|| (newXmlEntityMappings == null)
|| this.valuesAreDifferent(this.resourceType, newResourceType)) {
if (this.entityMappings != null) {
getJpaFile().removeRootStructureNode(this.xmlResource);
this.entityMappings.dispose();
setEntityMappings(null);
}
}
this.resourceType = newResourceType;
if (newXmlEntityMappings != null) {
if (this.entityMappings != null) {
this.entityMappings.update();
}
else {
setEntityMappings(buildEntityMappings(newXmlEntityMappings));
}
JpaFile jpaFile = getJpaFile();
if (jpaFile == null) {
System.out.print("Jpa file is null");
}
jpaFile.addRootStructureNode(this.xmlResource, this.entityMappings);
}
}
protected JpaFile getJpaFile() {
return this.getJpaFile(this.xmlResource.getFile());
}
@Override
public void postUpdate() {
super.postUpdate();
if (this.entityMappings != null) {
this.entityMappings.postUpdate();
}
}
// ********** validation **********
public TextRange getValidationTextRange() {
return TextRange.Empty.instance();
}
@Override
public void validate(List<IMessage> messages, IReporter reporter) {
super.validate(messages, reporter);
if (this.entityMappings != null) {
this.entityMappings.validate(messages, reporter);
}
}
}
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