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/*******************************************************************************
 * Copyright (c) 2006, 2012 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.resource.persistence;

import java.util.Collection;
import java.util.HashMap;
import org.eclipse.core.runtime.IPath;
import org.eclipse.core.runtime.Path;
import org.eclipse.core.runtime.content.IContentType;
import org.eclipse.emf.common.notify.NotificationChain;
import org.eclipse.emf.common.util.EList;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.InternalEObject;
import org.eclipse.emf.ecore.util.EObjectContainmentEList;
import org.eclipse.emf.ecore.util.InternalEList;
import org.eclipse.jpt.common.core.internal.utility.translators.SimpleRootTranslator;
import org.eclipse.jpt.common.core.resource.xml.ERootObjectImpl;
import org.eclipse.jpt.jpa.core.internal.plugin.JptJpaCorePlugin;
import org.eclipse.jpt.jpa.core.resource.persistence.v2_0.JPA2_0;
import org.eclipse.jpt.jpa.core.resource.persistence.v2_1.JPA2_1;
import org.eclipse.wst.common.internal.emf.resource.Translator;

/**
 * <!-- begin-user-doc -->
 * A representation of the model object '<em><b>XmlPersistence</b></em>'.
 * 
 * Provisional API: This interface is part of an interim API that is still
 * under development and expected to change significantly before reaching
 * stability. It is available at this early stage to solicit feedback from
 * pioneering adopters on the understanding that any code that uses this API
 * will almost certainly be broken (repeatedly) as the API evolves.
 * <!-- end-user-doc -->
 *
 * <p>
 * The following features are supported:
 * <ul>
 *   <li>{@link org.eclipse.jpt.jpa.core.resource.persistence.XmlPersistence#getPersistenceUnits <em>Persistence Units</em>}</li>
 * </ul>
 * </p>
 *
 * @see org.eclipse.jpt.jpa.core.resource.persistence.PersistencePackage#getXmlPersistence()
 * @model kind="class"
 * @generated
 */
public class XmlPersistence extends ERootObjectImpl
{
	/**
	 * The cached value of the '{@link #getPersistenceUnits() <em>Persistence Units</em>}' containment reference list.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getPersistenceUnits()
	 * @generated
	 * @ordered
	 */
	protected EList<XmlPersistenceUnit> persistenceUnits;


	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	protected XmlPersistence()
	{
		super();
	}
	
	@Override
	public EObject eContainer() {
		return super.eContainer();
	}
	
	@Override
	protected void eBasicSetContainer(InternalEObject newContainer, int newContainerFeatureID) {
		super.eBasicSetContainer(newContainer, newContainerFeatureID);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	protected EClass eStaticClass()
	{
		return PersistencePackage.Literals.XML_PERSISTENCE;
	}

	/**
	 * Returns the value of the '<em><b>Persistence Units</b></em>' containment reference list.
	 * The list contents are of type {@link org.eclipse.jpt.jpa.core.resource.persistence.XmlPersistenceUnit}.
	 * <!-- begin-user-doc -->
	 * <p>
	 * If the meaning of the '<em>XmlPersistence Units</em>' containment reference list isn't clear,
	 * there really should be more of a description here...
	 * </p>
	 * <!-- end-user-doc -->
	 * @return the value of the '<em>Persistence Units</em>' containment reference list.
	 * @see org.eclipse.jpt.jpa.core.resource.persistence.PersistencePackage#getXmlPersistence_PersistenceUnits()
	 * @model containment="true"
	 * @generated
	 */
	public EList<XmlPersistenceUnit> getPersistenceUnits()
	{
		if (persistenceUnits == null)
		{
			persistenceUnits = new EObjectContainmentEList<XmlPersistenceUnit>(XmlPersistenceUnit.class, this, PersistencePackage.XML_PERSISTENCE__PERSISTENCE_UNITS);
		}
		return persistenceUnits;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public NotificationChain eInverseRemove(InternalEObject otherEnd, int featureID, NotificationChain msgs)
	{
		switch (featureID)
		{
			case PersistencePackage.XML_PERSISTENCE__PERSISTENCE_UNITS:
				return ((InternalEList<?>)getPersistenceUnits()).basicRemove(otherEnd, msgs);
		}
		return super.eInverseRemove(otherEnd, featureID, msgs);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public Object eGet(int featureID, boolean resolve, boolean coreType)
	{
		switch (featureID)
		{
			case PersistencePackage.XML_PERSISTENCE__PERSISTENCE_UNITS:
				return getPersistenceUnits();
		}
		return super.eGet(featureID, resolve, coreType);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@SuppressWarnings("unchecked")
	@Override
	public void eSet(int featureID, Object newValue)
	{
		switch (featureID)
		{
			case PersistencePackage.XML_PERSISTENCE__PERSISTENCE_UNITS:
				getPersistenceUnits().clear();
				getPersistenceUnits().addAll((Collection<? extends XmlPersistenceUnit>)newValue);
				return;
		}
		super.eSet(featureID, newValue);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public void eUnset(int featureID)
	{
		switch (featureID)
		{
			case PersistencePackage.XML_PERSISTENCE__PERSISTENCE_UNITS:
				getPersistenceUnits().clear();
				return;
		}
		super.eUnset(featureID);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public boolean eIsSet(int featureID)
	{
		switch (featureID)
		{
			case PersistencePackage.XML_PERSISTENCE__PERSISTENCE_UNITS:
				return persistenceUnits != null && !persistenceUnits.isEmpty();
		}
		return super.eIsSet(featureID);
	}


	// ********** version -> schema location mapping **********
	
	private static final HashMap<String, String> SCHEMA_LOCATIONS = buildSchemaLocations();
	
	private static HashMap<String, String> buildSchemaLocations() {
		HashMap<String, String> map = new HashMap<String, String>();
		map.put(JPA.SCHEMA_VERSION, JPA.SCHEMA_LOCATION);
		map.put(JPA2_0.SCHEMA_VERSION, JPA2_0.SCHEMA_LOCATION);
		map.put(JPA2_1.SCHEMA_VERSION, JPA2_1.SCHEMA_LOCATION);
		return map;
	}
	
	@Override
	protected String getNamespace() {
		return JPA.SCHEMA_NAMESPACE;
	}
	
	@Override
	protected HashMap<String, String> schemaLocations() {
		return SCHEMA_LOCATIONS;
	}
	
	
	// ********** content/resource type **********

	/**
	 * The content type for <code>persistence.xml</code> files.
	 */
	public static final IContentType CONTENT_TYPE = JptJpaCorePlugin.instance().getContentType("persistence"); //$NON-NLS-1$


	// ********** default runtime path **********

	public static final String DEFAULT_RUNTIME_PATH_NAME = "META-INF/persistence.xml"; //$NON-NLS-1$

	public static final IPath DEFAULT_RUNTIME_PATH = new Path(DEFAULT_RUNTIME_PATH_NAME);


	// ********** translators **********

	public static Translator getRootTranslator() {
		return ROOT_TRANSLATOR;
	}
	
	private static final Translator ROOT_TRANSLATOR = buildRootTranslator();

	private static Translator buildRootTranslator() {
		return new SimpleRootTranslator(JPA.PERSISTENCE, PersistencePackage.eINSTANCE.getXmlPersistence(), buildTranslatorChildren());
	}
	
	private static Translator[] buildTranslatorChildren() {
		return new Translator[] {
				buildVersionTranslator(SCHEMA_LOCATIONS),
				buildNamespaceTranslator(JPA.SCHEMA_NAMESPACE),
				buildSchemaNamespaceTranslator(),
				buildSchemaLocationTranslator(JPA.SCHEMA_NAMESPACE, SCHEMA_LOCATIONS),
				XmlPersistenceUnit.buildTranslator(JPA.PERSISTENCE_UNIT, PersistencePackage.eINSTANCE.getXmlPersistence_PersistenceUnits())
			};
	}
}

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