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/*******************************************************************************
* Copyright (c) 2007 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.context.persistence;
import java.util.List;
import java.util.ListIterator;
import org.eclipse.jpt.core.JpaStructureNode;
import org.eclipse.jpt.core.context.persistence.Persistence;
import org.eclipse.jpt.core.context.persistence.PersistenceStructureNodes;
import org.eclipse.jpt.core.context.persistence.PersistenceUnit;
import org.eclipse.jpt.core.context.persistence.PersistenceXml;
import org.eclipse.jpt.core.internal.validation.DefaultJpaValidationMessages;
import org.eclipse.jpt.core.internal.validation.JpaValidationMessages;
import org.eclipse.jpt.core.resource.persistence.PersistenceFactory;
import org.eclipse.jpt.core.resource.persistence.XmlPersistence;
import org.eclipse.jpt.core.resource.persistence.XmlPersistenceUnit;
import org.eclipse.jpt.core.utility.TextRange;
import org.eclipse.jpt.utility.internal.CollectionTools;
import org.eclipse.jpt.utility.internal.iterators.EmptyListIterator;
import org.eclipse.jpt.utility.internal.iterators.SingleElementListIterator;
import org.eclipse.wst.validation.internal.provisional.core.IMessage;
public class GenericPersistence extends AbstractPersistenceJpaContextNode
implements Persistence
{
protected XmlPersistence xmlPersistence;
// the implementation here is a single persistence unit, although the API
// is for a list. we will want to support multiple persistence units soon.
protected PersistenceUnit persistenceUnit;
public GenericPersistence(PersistenceXml parent, XmlPersistence xmlPersistence) {
super(parent);
this.initialize(xmlPersistence);
}
public String getId() {
return PersistenceStructureNodes.PERSISTENCE_ID;
}
// **************** persistence units **************************************
public ListIterator<PersistenceUnit> persistenceUnits() {
if (persistenceUnit == null) {
return EmptyListIterator.instance();
}
else {
return new SingleElementListIterator<PersistenceUnit>(persistenceUnit);
}
}
public int persistenceUnitsSize() {
return (persistenceUnit == null) ? 0 : 1;
}
public PersistenceUnit addPersistenceUnit() {
return addPersistenceUnit(persistenceUnitsSize());
}
public PersistenceUnit addPersistenceUnit(int index) {
if (index > 0 || persistenceUnit != null) {
throw new IllegalStateException("This implementation does not support multiple persistence units.");
}
XmlPersistenceUnit xmlPersistenceUnit = PersistenceFactory.eINSTANCE.createXmlPersistenceUnit();
persistenceUnit = createPersistenceUnit(xmlPersistenceUnit);
xmlPersistence.getPersistenceUnits().add(xmlPersistenceUnit);
fireItemAdded(PERSISTENCE_UNITS_LIST, index, persistenceUnit);
return persistenceUnit;
}
public void removePersistenceUnit(PersistenceUnit persistenceUnit) {
removePersistenceUnit(0);
}
public void removePersistenceUnit(int index) {
if (index > 0 ) {
throw new IllegalArgumentException(new Integer(index).toString());
}
PersistenceUnit oldPersistenceUnit = persistenceUnit;
persistenceUnit = null;
xmlPersistence.getPersistenceUnits().remove(index);
fireItemRemoved(PERSISTENCE_UNITS_LIST, index, oldPersistenceUnit);
}
protected void addPersistenceUnit_(PersistenceUnit newPersistenceUnit) {
persistenceUnit = newPersistenceUnit;
fireItemAdded(PERSISTENCE_UNITS_LIST, 0, persistenceUnit);
}
protected void removePersistenceUnit_(PersistenceUnit oldPersistenceUnit) {
persistenceUnit = null;
fireItemRemoved(PERSISTENCE_UNITS_LIST, 0, oldPersistenceUnit);
}
// **************** updating ***********************************************
protected void initialize(XmlPersistence xmlPersistence) {
this.xmlPersistence = xmlPersistence;
initializePersistenceUnits(xmlPersistence);
}
protected void initializePersistenceUnits(XmlPersistence persistence) {
// only adding one here, until we support multiple persistence units
if (xmlPersistence.getPersistenceUnits().size() > 0) {
persistenceUnit = createPersistenceUnit(persistence.getPersistenceUnits().get(0));
}
}
public void update(XmlPersistence persistence) {
this.xmlPersistence = persistence;
getJpaFile(this.xmlPersistence.getResource().getResourceModel()).addRootStructureNode(this, this);
XmlPersistenceUnit xmlPersistenceUnit = null;
if (persistence.getPersistenceUnits().size() > 0) {
xmlPersistenceUnit = persistence.getPersistenceUnits().get(0);
}
if (persistenceUnit != null) {
if (xmlPersistenceUnit != null) {
persistenceUnit.update(xmlPersistenceUnit);
}
else {
removePersistenceUnit_(persistenceUnit);
}
}
else {
if (xmlPersistenceUnit != null) {
addPersistenceUnit_(createPersistenceUnit(xmlPersistenceUnit));
}
}
}
protected PersistenceUnit createPersistenceUnit(XmlPersistenceUnit xmlPersistenceUnit) {
return getJpaFactory().buildPersistenceUnit(this, xmlPersistenceUnit);
}
// *************************************************************************
@Override
public PersistenceUnit getPersistenceUnit() {
throw new UnsupportedOperationException("No PersistenceUnit in this context");
}
public JpaStructureNode getStructureNode(int textOffset) {
for (PersistenceUnit persistenceUnit : CollectionTools.iterable(persistenceUnits())) {
if (persistenceUnit.containsOffset(textOffset)) {
return persistenceUnit.getStructureNode(textOffset);
}
}
return this;
}
public boolean containsOffset(int textOffset) {
if (xmlPersistence == null) {
return false;
}
return xmlPersistence.containsOffset(textOffset);
}
public TextRange getSelectionTextRange() {
return xmlPersistence.getSelectionTextRange();
}
public TextRange getValidationTextRange() {
return xmlPersistence.getValidationTextRange();
}
@Override
public void addToMessages(List<IMessage> messages) {
super.addToMessages(messages);
//persistence root validation
addNoPersistenceUnitMessage(messages);
// note to neil (or whomever): extraneous persistence units can be
// accessed through the XmlPersistence resource object
addMultiplePersistenceUnitMessage(messages);
//persistence unit validation
if (persistenceUnit != null) {
persistenceUnit.addToMessages(messages);
}
}
protected void addNoPersistenceUnitMessage(List<IMessage> messages) {
if (persistenceUnit == null) {
messages.add(
DefaultJpaValidationMessages.buildMessage(
IMessage.HIGH_SEVERITY,
JpaValidationMessages.PERSISTENCE_NO_PERSISTENCE_UNIT,
this,
this.getValidationTextRange())
);
}
}
protected void addMultiplePersistenceUnitMessage(List<IMessage> messages) {
if (xmlPersistence.getPersistenceUnits().size() > 1) {
messages.add(
DefaultJpaValidationMessages.buildMessage(
IMessage.NORMAL_SEVERITY,
JpaValidationMessages.PERSISTENCE_MULTIPLE_PERSISTENCE_UNITS,
this,
this.getValidationTextRange())
);
}
}
public void dispose() {
getJpaFile(this.xmlPersistence.getResource().getResourceModel()).removeRootStructureNode(this);
for (PersistenceUnit persistenceUnit : CollectionTools.iterable(persistenceUnits())) {
persistenceUnit.dispose();
}
}
}
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