| /******************************************************************************* |
| * 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())); |
| } |
| } |