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/*******************************************************************************
* Copyright (c) 2009, 2011 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.jpa.core.internal.jpa2;
import java.util.Iterator;
import org.eclipse.jpt.common.utility.internal.StringTools;
import org.eclipse.jpt.jpa.core.JpaDataSource;
import org.eclipse.jpt.jpa.core.context.JpaRootContextNode;
import org.eclipse.jpt.jpa.core.context.persistence.Persistence;
import org.eclipse.jpt.jpa.core.context.persistence.PersistenceUnit;
import org.eclipse.jpt.jpa.core.context.persistence.PersistenceXml;
import org.eclipse.jpt.jpa.core.jpa2.context.persistence.PersistenceUnit2_0;
import org.eclipse.jpt.jpa.db.DatabaseIdentifierAdapter;
/**
* Conversions are determined by the <code>delimited-identifiers</code>
* flag in <code>orm.xml</code>.
* <p>
* Assume we are in a JPA 2.0-compatible project.
*/
public class GenericJpaDatabaseIdentifierAdapter
implements DatabaseIdentifierAdapter
{
private final JpaDataSource dataSource;
public GenericJpaDatabaseIdentifierAdapter(JpaDataSource dataSource) {
super();
this.dataSource = dataSource;
}
/**
* If the flag is set, "identifiers" are treated as "names".
*/
public boolean treatIdentifiersAsDelimited() {
return this.getDefaultDelimitedIdentifiers();
}
protected boolean getDefaultDelimitedIdentifiers() {
PersistenceUnit2_0 pu = this.getPersistenceUnit();
return (pu != null) && pu.getDefaultDelimitedIdentifiers();
}
protected PersistenceUnit2_0 getPersistenceUnit() {
Persistence p = this.getPersistence();
if (p == null) {
return null;
}
Iterator<PersistenceUnit> units = this.getPersistence().persistenceUnits();
return (PersistenceUnit2_0) (units.hasNext() ? units.next() : null);
}
protected Persistence getPersistence() {
PersistenceXml pxml = this.getPersistenceXml();
return (pxml == null) ? null : pxml.getPersistence();
}
protected PersistenceXml getPersistenceXml() {
// TODO this null check can be removed if the data source is moved to the persistence unit;
// the root context node can be null during construction;
// this shouldn't be a problem since the default-delimiters flag
// is recalculated during the initial, post-project construction, "update"
JpaRootContextNode rcn = this.dataSource.getJpaProject().getRootContextNode();
return (rcn == null) ? null : rcn.getPersistenceXml();
}
@Override
public String toString() {
return StringTools.buildToStringFor(this, Boolean.valueOf(this.treatIdentifiersAsDelimited()));
}
}
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