/*
 * Copyright (c) 2005, 2006 IBM Corporation and others.
 * 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:
 *   IBM - initial API and implementation
 *
 * $Id: PackageMergeImpl.java,v 1.13 2006/11/14 18:02:18 khussey Exp $
 */
package org.eclipse.uml2.uml.internal.impl;

import java.util.Collection;
import org.eclipse.emf.common.notify.Notification;
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.InternalEObject;

import org.eclipse.emf.ecore.impl.ENotificationImpl;

import org.eclipse.emf.ecore.resource.Resource;

import org.eclipse.emf.ecore.util.EcoreUtil;
import org.eclipse.emf.ecore.util.InternalEList;

import org.eclipse.uml2.common.util.CacheAdapter;
import org.eclipse.uml2.common.util.DerivedUnionEObjectEList;

import org.eclipse.uml2.uml.Element;
import org.eclipse.uml2.uml.PackageMerge;
import org.eclipse.uml2.uml.UMLPackage;

/**
 * <!-- begin-user-doc -->
 * An implementation of the model object '<em><b>Package Merge</b></em>'.
 * <!-- end-user-doc -->
 * <p>
 * The following features are implemented:
 * <ul>
 *   <li>{@link org.eclipse.uml2.uml.internal.impl.PackageMergeImpl#getTargets <em>Target</em>}</li>
 *   <li>{@link org.eclipse.uml2.uml.internal.impl.PackageMergeImpl#getSources <em>Source</em>}</li>
 *   <li>{@link org.eclipse.uml2.uml.internal.impl.PackageMergeImpl#getOwner <em>Owner</em>}</li>
 *   <li>{@link org.eclipse.uml2.uml.internal.impl.PackageMergeImpl#getMergedPackage <em>Merged Package</em>}</li>
 *   <li>{@link org.eclipse.uml2.uml.internal.impl.PackageMergeImpl#getReceivingPackage <em>Receiving Package</em>}</li>
 * </ul>
 * </p>
 *
 * @generated
 */
public class PackageMergeImpl
		extends DirectedRelationshipImpl
		implements PackageMerge {

	/**
	 * The cached value of the '{@link #getMergedPackage() <em>Merged Package</em>}' reference.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getMergedPackage()
	 * @generated
	 * @ordered
	 */
	protected org.eclipse.uml2.uml.Package mergedPackage = null;

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	protected PackageMergeImpl() {
		super();
	}

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

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public EList getTargets() {

		CacheAdapter cache = getCacheAdapter();
		if (cache != null) {
			Resource eResource = eResource();
			EList targets = (EList) cache.get(eResource, this,
				UMLPackage.Literals.DIRECTED_RELATIONSHIP__TARGET);
			if (targets == null) {
				cache.put(eResource, this,
					UMLPackage.Literals.DIRECTED_RELATIONSHIP__TARGET,
					targets = new DerivedUnionEObjectEList(Element.class, this,
						UMLPackage.PACKAGE_MERGE__TARGET, TARGET_ESUBSETS));
			}
			return targets;
		}
		return new DerivedUnionEObjectEList(Element.class, this,
			UMLPackage.PACKAGE_MERGE__TARGET, TARGET_ESUBSETS);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public EList getSources() {

		CacheAdapter cache = getCacheAdapter();
		if (cache != null) {
			Resource eResource = eResource();
			EList sources = (EList) cache.get(eResource, this,
				UMLPackage.Literals.DIRECTED_RELATIONSHIP__SOURCE);
			if (sources == null) {
				cache.put(eResource, this,
					UMLPackage.Literals.DIRECTED_RELATIONSHIP__SOURCE,
					sources = new DerivedUnionEObjectEList(Element.class, this,
						UMLPackage.PACKAGE_MERGE__SOURCE, SOURCE_ESUBSETS));
			}
			return sources;
		}
		return new DerivedUnionEObjectEList(Element.class, this,
			UMLPackage.PACKAGE_MERGE__SOURCE, SOURCE_ESUBSETS);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public org.eclipse.uml2.uml.Package getMergedPackage() {
		if (mergedPackage != null && mergedPackage.eIsProxy()) {
			InternalEObject oldMergedPackage = (InternalEObject) mergedPackage;
			mergedPackage = (org.eclipse.uml2.uml.Package) eResolveProxy(oldMergedPackage);
			if (mergedPackage != oldMergedPackage) {
				if (eNotificationRequired())
					eNotify(new ENotificationImpl(this, Notification.RESOLVE,
						UMLPackage.PACKAGE_MERGE__MERGED_PACKAGE,
						oldMergedPackage, mergedPackage));
			}
		}
		return mergedPackage;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public org.eclipse.uml2.uml.Package basicGetMergedPackage() {
		return mergedPackage;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void setMergedPackage(org.eclipse.uml2.uml.Package newMergedPackage) {

		org.eclipse.uml2.uml.Package oldMergedPackage = mergedPackage;
		mergedPackage = newMergedPackage;
		if (eNotificationRequired())
			eNotify(new ENotificationImpl(this, Notification.SET,
				UMLPackage.PACKAGE_MERGE__MERGED_PACKAGE, oldMergedPackage,
				mergedPackage));

	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public org.eclipse.uml2.uml.Package getReceivingPackage() {
		if (eContainerFeatureID != UMLPackage.PACKAGE_MERGE__RECEIVING_PACKAGE)
			return null;
		return (org.eclipse.uml2.uml.Package) eContainer();
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public org.eclipse.uml2.uml.Package basicGetReceivingPackage() {
		if (eContainerFeatureID != UMLPackage.PACKAGE_MERGE__RECEIVING_PACKAGE)
			return null;
		return (org.eclipse.uml2.uml.Package) eInternalContainer();
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public NotificationChain basicSetReceivingPackage(
			org.eclipse.uml2.uml.Package newReceivingPackage,
			NotificationChain msgs) {
		msgs = eBasicSetContainer((InternalEObject) newReceivingPackage,
			UMLPackage.PACKAGE_MERGE__RECEIVING_PACKAGE, msgs);

		return msgs;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void setReceivingPackage(
			org.eclipse.uml2.uml.Package newReceivingPackage) {

		if (newReceivingPackage != eInternalContainer()
			|| (eContainerFeatureID != UMLPackage.PACKAGE_MERGE__RECEIVING_PACKAGE && newReceivingPackage != null)) {
			if (EcoreUtil.isAncestor(this, newReceivingPackage))
				throw new IllegalArgumentException(
					"Recursive containment not allowed for " + toString()); //$NON-NLS-1$
			NotificationChain msgs = null;
			if (eInternalContainer() != null)
				msgs = eBasicRemoveFromContainer(msgs);
			if (newReceivingPackage != null)
				msgs = ((InternalEObject) newReceivingPackage).eInverseAdd(
					this, UMLPackage.PACKAGE__PACKAGE_MERGE,
					org.eclipse.uml2.uml.Package.class, msgs);
			msgs = basicSetReceivingPackage(newReceivingPackage, msgs);
			if (msgs != null)
				msgs.dispatch();
		} else if (eNotificationRequired())
			eNotify(new ENotificationImpl(this, Notification.SET,
				UMLPackage.PACKAGE_MERGE__RECEIVING_PACKAGE,
				newReceivingPackage, newReceivingPackage));

	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public NotificationChain eInverseAdd(InternalEObject otherEnd,
			int featureID, NotificationChain msgs) {
		switch (featureID) {
			case UMLPackage.PACKAGE_MERGE__EANNOTATIONS :
				return ((InternalEList) getEAnnotations()).basicAdd(otherEnd,
					msgs);
			case UMLPackage.PACKAGE_MERGE__RECEIVING_PACKAGE :
				if (eInternalContainer() != null)
					msgs = eBasicRemoveFromContainer(msgs);
				return basicSetReceivingPackage(
					(org.eclipse.uml2.uml.Package) otherEnd, msgs);
		}
		return eDynamicInverseAdd(otherEnd, featureID, msgs);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public NotificationChain eInverseRemove(InternalEObject otherEnd,
			int featureID, NotificationChain msgs) {
		switch (featureID) {
			case UMLPackage.PACKAGE_MERGE__EANNOTATIONS :
				return ((InternalEList) getEAnnotations()).basicRemove(
					otherEnd, msgs);
			case UMLPackage.PACKAGE_MERGE__OWNED_COMMENT :
				return ((InternalEList) getOwnedComments()).basicRemove(
					otherEnd, msgs);
			case UMLPackage.PACKAGE_MERGE__RECEIVING_PACKAGE :
				return basicSetReceivingPackage(null, msgs);
		}
		return eDynamicInverseRemove(otherEnd, featureID, msgs);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public NotificationChain eBasicRemoveFromContainerFeature(
			NotificationChain msgs) {
		switch (eContainerFeatureID) {
			case UMLPackage.PACKAGE_MERGE__RECEIVING_PACKAGE :
				return eInternalContainer().eInverseRemove(this,
					UMLPackage.PACKAGE__PACKAGE_MERGE,
					org.eclipse.uml2.uml.Package.class, msgs);
		}
		return eDynamicBasicRemoveFromContainer(msgs);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public Object eGet(int featureID, boolean resolve, boolean coreType) {
		switch (featureID) {
			case UMLPackage.PACKAGE_MERGE__EANNOTATIONS :
				return getEAnnotations();
			case UMLPackage.PACKAGE_MERGE__OWNED_ELEMENT :
				return getOwnedElements();
			case UMLPackage.PACKAGE_MERGE__OWNER :
				if (resolve)
					return getOwner();
				return basicGetOwner();
			case UMLPackage.PACKAGE_MERGE__OWNED_COMMENT :
				return getOwnedComments();
			case UMLPackage.PACKAGE_MERGE__RELATED_ELEMENT :
				return getRelatedElements();
			case UMLPackage.PACKAGE_MERGE__SOURCE :
				return getSources();
			case UMLPackage.PACKAGE_MERGE__TARGET :
				return getTargets();
			case UMLPackage.PACKAGE_MERGE__MERGED_PACKAGE :
				if (resolve)
					return getMergedPackage();
				return basicGetMergedPackage();
			case UMLPackage.PACKAGE_MERGE__RECEIVING_PACKAGE :
				if (resolve)
					return getReceivingPackage();
				return basicGetReceivingPackage();
		}
		return eDynamicGet(featureID, resolve, coreType);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void eSet(int featureID, Object newValue) {
		switch (featureID) {
			case UMLPackage.PACKAGE_MERGE__EANNOTATIONS :
				getEAnnotations().clear();
				getEAnnotations().addAll((Collection) newValue);
				return;
			case UMLPackage.PACKAGE_MERGE__OWNED_COMMENT :
				getOwnedComments().clear();
				getOwnedComments().addAll((Collection) newValue);
				return;
			case UMLPackage.PACKAGE_MERGE__MERGED_PACKAGE :
				setMergedPackage((org.eclipse.uml2.uml.Package) newValue);
				return;
			case UMLPackage.PACKAGE_MERGE__RECEIVING_PACKAGE :
				setReceivingPackage((org.eclipse.uml2.uml.Package) newValue);
				return;
		}
		eDynamicSet(featureID, newValue);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void eUnset(int featureID) {
		switch (featureID) {
			case UMLPackage.PACKAGE_MERGE__EANNOTATIONS :
				getEAnnotations().clear();
				return;
			case UMLPackage.PACKAGE_MERGE__OWNED_COMMENT :
				getOwnedComments().clear();
				return;
			case UMLPackage.PACKAGE_MERGE__MERGED_PACKAGE :
				setMergedPackage((org.eclipse.uml2.uml.Package) null);
				return;
			case UMLPackage.PACKAGE_MERGE__RECEIVING_PACKAGE :
				setReceivingPackage((org.eclipse.uml2.uml.Package) null);
				return;
		}
		eDynamicUnset(featureID);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public boolean eIsSet(int featureID) {
		switch (featureID) {
			case UMLPackage.PACKAGE_MERGE__EANNOTATIONS :
				return eAnnotations != null && !eAnnotations.isEmpty();
			case UMLPackage.PACKAGE_MERGE__OWNED_ELEMENT :
				return isSetOwnedElements();
			case UMLPackage.PACKAGE_MERGE__OWNER :
				return isSetOwner();
			case UMLPackage.PACKAGE_MERGE__OWNED_COMMENT :
				return ownedComments != null && !ownedComments.isEmpty();
			case UMLPackage.PACKAGE_MERGE__RELATED_ELEMENT :
				return isSetRelatedElements();
			case UMLPackage.PACKAGE_MERGE__SOURCE :
				return isSetSources();
			case UMLPackage.PACKAGE_MERGE__TARGET :
				return isSetTargets();
			case UMLPackage.PACKAGE_MERGE__MERGED_PACKAGE :
				return mergedPackage != null;
			case UMLPackage.PACKAGE_MERGE__RECEIVING_PACKAGE :
				return basicGetReceivingPackage() != null;
		}
		return eDynamicIsSet(featureID);
	}

	/**
	 * The array of subset feature identifiers for the '{@link #getTargets() <em>Target</em>}' reference list.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getTargets()
	 * @generated
	 * @ordered
	 */
	protected static final int[] TARGET_ESUBSETS = new int[]{UMLPackage.PACKAGE_MERGE__MERGED_PACKAGE};

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public boolean isSetTargets() {
		return super.isSetTargets()
			|| eIsSet(UMLPackage.PACKAGE_MERGE__MERGED_PACKAGE);
	}

	/**
	 * The array of subset feature identifiers for the '{@link #getSources() <em>Source</em>}' reference list.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getSources()
	 * @generated
	 * @ordered
	 */
	protected static final int[] SOURCE_ESUBSETS = new int[]{UMLPackage.PACKAGE_MERGE__RECEIVING_PACKAGE};

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public Element getOwner() {
		Element owner = basicGetOwner();
		return owner != null && owner.eIsProxy()
			? (Element) eResolveProxy((InternalEObject) owner)
			: owner;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public boolean isSetSources() {
		return super.isSetSources()
			|| eIsSet(UMLPackage.PACKAGE_MERGE__RECEIVING_PACKAGE);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public Element basicGetOwner() {

		org.eclipse.uml2.uml.Package receivingPackage = basicGetReceivingPackage();
		if (receivingPackage != null) {
			return receivingPackage;
		}
		return super.basicGetOwner();
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public boolean isSetOwner() {
		return super.isSetOwner()
			|| eIsSet(UMLPackage.PACKAGE_MERGE__RECEIVING_PACKAGE);
	}

} //PackageMergeImpl