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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.persistence;
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.JpaRootContextNode;
import org.eclipse.jpt.core.context.persistence.Persistence;
import org.eclipse.jpt.core.internal.context.persistence.AbstractPersistenceXmlContextNode;
import org.eclipse.jpt.core.internal.validation.DefaultJpaValidationMessages;
import org.eclipse.jpt.core.internal.validation.JpaValidationMessages;
import org.eclipse.jpt.core.jpa2.context.persistence.Persistence2_0;
import org.eclipse.jpt.core.jpa2.context.persistence.PersistenceXml2_0;
import org.eclipse.jpt.core.resource.persistence.XmlPersistence;
import org.eclipse.jpt.core.resource.xml.JpaXmlResource;
import org.eclipse.jpt.core.utility.TextRange;
import org.eclipse.wst.validation.internal.provisional.core.IMessage;
import org.eclipse.wst.validation.internal.provisional.core.IReporter;
/**
* context model persistence.xml
*/
public class GenericPersistenceXml
extends AbstractPersistenceXmlContextNode
implements PersistenceXml2_0
{
/**
* If the XML resource's content type changes a new instance of this object will be built
*/
protected JpaXmlResource xmlResource; // never null
/**
* 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 Persistence persistence;
public GenericPersistenceXml(JpaRootContextNode parent, JpaXmlResource resource) {
super(parent);
if ( ! resource.getContentType().isKindOf(JptCorePlugin.PERSISTENCE_XML_CONTENT_TYPE)) {
throw new IllegalArgumentException("Resource " + resource + " must have persistence xml content type"); //$NON-NLS-1$ //$NON-NLS-2$
}
this.xmlResource = resource;
if (resource.getRootObject() != null) {
this.persistence = this.buildPersistence((XmlPersistence) resource.getRootObject());
this.resourceType = resource.getResourceType();
}
}
// ********** XmlFile implementation **********
public JpaXmlResource getXmlResource() {
return this.xmlResource;
}
// ********** AbstractJpaNode overrides **********
@Override
public IResource getResource() {
return this.xmlResource.getFile();
}
// ********** AbstractJpaContextNode overrides **********
@Override
public JpaResourceType getResourceType() {
return this.xmlResource.getResourceType();
}
// ********** persistence **********
public Persistence getPersistence() {
return this.persistence;
}
protected void setPersistence(Persistence persistence) {
Persistence old = this.persistence;
this.persistence = persistence;
this.firePropertyChanged(PERSISTENCE_PROPERTY, old, persistence);
}
protected Persistence buildPersistence(XmlPersistence xmlPersistence) {
return this.getContextNodeFactory().buildPersistence(this, xmlPersistence);
}
// ********** metamodel **********
public void initializeMetamodel() {
if (this.persistence != null) {
((Persistence2_0) this.persistence).initializeMetamodel();
}
}
public void synchronizeMetamodel() {
if (this.persistence != null) {
((Persistence2_0) this.persistence).synchronizeMetamodel();
}
}
public void disposeMetamodel() {
if (this.persistence != null) {
((Persistence2_0) this.persistence).disposeMetamodel();
}
}
// ********** updating **********
public void update() {
XmlPersistence oldXmlPersistence = (this.persistence == null) ? null : this.persistence.getXmlPersistence();
XmlPersistence newXmlPersistence = (XmlPersistence) this.xmlResource.getRootObject();
JpaResourceType newResourceType = this.xmlResource.getResourceType();
// if the old and new xml persistences are different instances,
// we scrap the old and rebuild. this can happen when the resource
// model drastically changes, such as a cvs checkout or an edit reversion
if ((oldXmlPersistence != newXmlPersistence)
|| (newXmlPersistence == null)
|| this.valuesAreDifferent(this.resourceType, newResourceType)) {
if (this.persistence != null) {
getJpaFile().removeRootStructureNode(this.xmlResource);
this.persistence.dispose();
setPersistence(null);
}
}
this.resourceType = newResourceType;
if (newXmlPersistence != null) {
if (this.persistence != null) {
this.persistence.update(newXmlPersistence);
}
else {
setPersistence(buildPersistence(newXmlPersistence));
}
this.getJpaFile().addRootStructureNode(this.xmlResource, this.persistence);
}
}
@Override
public void postUpdate() {
super.postUpdate();
if (this.persistence != null) {
this.persistence.postUpdate();
}
}
// ********** JpaStructureNode implementation **********
public String getId() {
// isn't actually displayed, so needs no details page
return null;
}
public JpaStructureNode getStructureNode(int textOffset) {
if (this.persistence.containsOffset(textOffset)) {
return this.persistence.getStructureNode(textOffset);
}
return this;
}
// never actually selected
public TextRange getSelectionTextRange() {
return TextRange.Empty.instance();
}
public void dispose() {
if (this.persistence != null) {
this.persistence.dispose();
}
JpaFile jpaFile = getJpaFile();
if (jpaFile != null) {
jpaFile.removeRootStructureNode(this.xmlResource);
}
}
protected JpaFile getJpaFile() {
return this.getJpaFile(this.xmlResource.getFile());
}
// ********** validation **********
// never actually selected
public TextRange getValidationTextRange() {
return TextRange.Empty.instance();
}
@Override
public void validate(List<IMessage> messages, IReporter reporter) {
super.validate(messages, reporter);
if (this.persistence == null) {
messages.add(
DefaultJpaValidationMessages.buildMessage(
IMessage.HIGH_SEVERITY,
JpaValidationMessages.PERSISTENCE_XML_INVALID_CONTENT,
this
)
);
return;
}
this.persistence.validate(messages, reporter);
}
}
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