/*
 * Copyright (c) 2003, 2004 IBM Corporation and others.
 * All rights reserved.   This program and the accompanying materials
 * are made available under the terms of the Common Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 *
 * Contributors:
 *   IBM - Initial API and implementation
 *
 * $Id: ActivityEdgeImpl.java,v 1.2 2004/04/10 04:09:48 khussey Exp $
 */
package org.eclipse.uml2.impl;

import java.util.Collection;
import java.util.Iterator;
import java.util.LinkedHashSet;
import java.util.Set;

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.EStructuralFeature;
import org.eclipse.emf.ecore.InternalEObject;
import org.eclipse.emf.ecore.impl.ENotificationImpl;
import org.eclipse.emf.ecore.util.EObjectResolvingEList;
import org.eclipse.emf.ecore.util.EObjectWithInverseResolvingEList;
import org.eclipse.emf.ecore.util.EcoreEList;
import org.eclipse.emf.ecore.util.EcoreUtil;
import org.eclipse.emf.ecore.util.InternalEList;
import org.eclipse.uml2.Activity;
import org.eclipse.uml2.ActivityEdge;
import org.eclipse.uml2.ActivityNode;
import org.eclipse.uml2.ActivityPartition;
import org.eclipse.uml2.Element;
import org.eclipse.uml2.InterruptibleActivityRegion;
import org.eclipse.uml2.StringExpression;
import org.eclipse.uml2.StructuredActivityNode;
import org.eclipse.uml2.TemplateSignature;
import org.eclipse.uml2.UML2Package;
import org.eclipse.uml2.ValueSpecification;
import org.eclipse.uml2.VisibilityKind;

/**
 * <!-- begin-user-doc -->
 * An implementation of the model object '<em><b>Activity Edge</b></em>'.
 * <!-- end-user-doc -->
 * <p>
 * The following features are implemented:
 * <ul>
 *   <li>{@link org.eclipse.uml2.impl.ActivityEdgeImpl#getActivity <em>Activity</em>}</li>
 *   <li>{@link org.eclipse.uml2.impl.ActivityEdgeImpl#getSource <em>Source</em>}</li>
 *   <li>{@link org.eclipse.uml2.impl.ActivityEdgeImpl#getTarget <em>Target</em>}</li>
 *   <li>{@link org.eclipse.uml2.impl.ActivityEdgeImpl#getInGroups <em>In Group</em>}</li>
 *   <li>{@link org.eclipse.uml2.impl.ActivityEdgeImpl#getGuard <em>Guard</em>}</li>
 *   <li>{@link org.eclipse.uml2.impl.ActivityEdgeImpl#getRedefinedElements <em>Redefined Element</em>}</li>
 *   <li>{@link org.eclipse.uml2.impl.ActivityEdgeImpl#getInStructuredNode <em>In Structured Node</em>}</li>
 *   <li>{@link org.eclipse.uml2.impl.ActivityEdgeImpl#getInPartitions <em>In Partition</em>}</li>
 *   <li>{@link org.eclipse.uml2.impl.ActivityEdgeImpl#getWeight <em>Weight</em>}</li>
 *   <li>{@link org.eclipse.uml2.impl.ActivityEdgeImpl#getInterrupts <em>Interrupts</em>}</li>
 * </ul>
 * </p>
 *
 * @generated
 */
public abstract class ActivityEdgeImpl extends RedefinableElementImpl implements ActivityEdge {
	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public static final String copyright = "Copyright (c) 2003, 2004 IBM Corporation and others."; //$NON-NLS-1$

	/**
	 * The cached value of the '{@link #getSource() <em>Source</em>}' reference.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getSource()
	 * @generated
	 * @ordered
	 */
	protected ActivityNode source = null;

	/**
	 * The cached value of the '{@link #getTarget() <em>Target</em>}' reference.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getTarget()
	 * @generated
	 * @ordered
	 */
	protected ActivityNode target = null;

	/**
	 * The cached value of the '{@link #getGuard() <em>Guard</em>}' containment reference.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getGuard()
	 * @generated
	 * @ordered
	 */
	protected ValueSpecification guard = null;

	/**
	 * The cached value of the '{@link #getRedefinedElements() <em>Redefined Element</em>}' reference list.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getRedefinedElements()
	 * @generated
	 * @ordered
	 */
	protected EList redefinedElement = null;

	/**
	 * The cached value of the '{@link #getInPartitions() <em>In Partition</em>}' reference list.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getInPartitions()
	 * @generated
	 * @ordered
	 */
	protected EList inPartition = null;

	/**
	 * The cached value of the '{@link #getWeight() <em>Weight</em>}' containment reference.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getWeight()
	 * @generated
	 * @ordered
	 */
	protected ValueSpecification weight = null;

	/**
	 * The cached value of the '{@link #getInterrupts() <em>Interrupts</em>}' reference.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getInterrupts()
	 * @generated
	 * @ordered
	 */
	protected InterruptibleActivityRegion interrupts = null;

	/**
	 * The cached value of the '{@link #getInStructuredNode() <em>In Structured Node</em>}' reference.
	 * @see #getInStructuredNode()
	 */
	protected StructuredActivityNode _inStructuredNode = null;

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

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	protected EClass eStaticClass() {
		return UML2Package.eINSTANCE.getActivityEdge();
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * Returns the value of the '<em><b>Activity</b></em>' container reference.
	 * <p>
	 * Subsets the following features:
	 * <ul>
	 *   <li>{@link org.eclipse.uml2.Element#getOwner}</li>
	 * </ul>
	 * </p>
	 * @generated
	 */
	public Activity getActivity() {
		if (eContainerFeatureID != UML2Package.ACTIVITY_EDGE__ACTIVITY) return null;
		return (Activity)eContainer;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void setActivity(Activity newActivity) {
		if (newActivity != eContainer || (eContainerFeatureID != UML2Package.ACTIVITY_EDGE__ACTIVITY && newActivity != null)) {
			if (EcoreUtil.isAncestor(this, newActivity))
				throw new IllegalArgumentException("Recursive containment not allowed for " + toString()); //$NON-NLS-1$
			NotificationChain msgs = null;
			if (eContainer != null)
				msgs = eBasicRemoveFromContainer(msgs);
			if (newActivity != null)
				msgs = ((InternalEObject)newActivity).eInverseAdd(this, UML2Package.ACTIVITY__EDGE, Activity.class, msgs);
			msgs = eBasicSetContainer((InternalEObject)newActivity, UML2Package.ACTIVITY_EDGE__ACTIVITY, msgs);
			if (msgs != null) msgs.dispatch();
		}
		else if (eNotificationRequired())
			eNotify(new ENotificationImpl(this, Notification.SET, UML2Package.ACTIVITY_EDGE__ACTIVITY, newActivity, newActivity));
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * Returns the value of the '<em><b>Source</b></em>' reference.
	 * @generated
	 */
	public ActivityNode getSource() {
		if (source != null && source.eIsProxy()) {
			ActivityNode oldSource = source;
			source = (ActivityNode)eResolveProxy((InternalEObject)source);
			if (source != oldSource) {
				if (eNotificationRequired())
					eNotify(new ENotificationImpl(this, Notification.RESOLVE, UML2Package.ACTIVITY_EDGE__SOURCE, oldSource, source));
			}
		}
		return source;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * Returns the value of the '<em><b>Source</b></em>' reference.
	 * @generated
	 */
	public ActivityNode basicGetSource() {
		return source;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public NotificationChain basicSetSource(ActivityNode newSource, NotificationChain msgs) {
		ActivityNode oldSource = source;
		source = newSource;
		if (eNotificationRequired()) {
			ENotificationImpl notification = new ENotificationImpl(this, Notification.SET, UML2Package.ACTIVITY_EDGE__SOURCE, oldSource, newSource);
			if (msgs == null) msgs = notification; else msgs.add(notification);
		}
		return msgs;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void setSource(ActivityNode newSource) {
		if (newSource != source) {
			NotificationChain msgs = null;
			if (source != null)
				msgs = ((InternalEObject)source).eInverseRemove(this, UML2Package.ACTIVITY_NODE__OUTGOING, ActivityNode.class, msgs);
			if (newSource != null)
				msgs = ((InternalEObject)newSource).eInverseAdd(this, UML2Package.ACTIVITY_NODE__OUTGOING, ActivityNode.class, msgs);
			msgs = basicSetSource(newSource, msgs);
			if (msgs != null) msgs.dispatch();
		}
		else if (eNotificationRequired())
			eNotify(new ENotificationImpl(this, Notification.SET, UML2Package.ACTIVITY_EDGE__SOURCE, newSource, newSource));
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * Returns the value of the '<em><b>Target</b></em>' reference.
	 * @generated
	 */
	public ActivityNode getTarget() {
		if (target != null && target.eIsProxy()) {
			ActivityNode oldTarget = target;
			target = (ActivityNode)eResolveProxy((InternalEObject)target);
			if (target != oldTarget) {
				if (eNotificationRequired())
					eNotify(new ENotificationImpl(this, Notification.RESOLVE, UML2Package.ACTIVITY_EDGE__TARGET, oldTarget, target));
			}
		}
		return target;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * Returns the value of the '<em><b>Target</b></em>' reference.
	 * @generated
	 */
	public ActivityNode basicGetTarget() {
		return target;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public NotificationChain basicSetTarget(ActivityNode newTarget, NotificationChain msgs) {
		ActivityNode oldTarget = target;
		target = newTarget;
		if (eNotificationRequired()) {
			ENotificationImpl notification = new ENotificationImpl(this, Notification.SET, UML2Package.ACTIVITY_EDGE__TARGET, oldTarget, newTarget);
			if (msgs == null) msgs = notification; else msgs.add(notification);
		}
		return msgs;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void setTarget(ActivityNode newTarget) {
		if (newTarget != target) {
			NotificationChain msgs = null;
			if (target != null)
				msgs = ((InternalEObject)target).eInverseRemove(this, UML2Package.ACTIVITY_NODE__INCOMING, ActivityNode.class, msgs);
			if (newTarget != null)
				msgs = ((InternalEObject)newTarget).eInverseAdd(this, UML2Package.ACTIVITY_NODE__INCOMING, ActivityNode.class, msgs);
			msgs = basicSetTarget(newTarget, msgs);
			if (msgs != null) msgs.dispatch();
		}
		else if (eNotificationRequired())
			eNotify(new ENotificationImpl(this, Notification.SET, UML2Package.ACTIVITY_EDGE__TARGET, newTarget, newTarget));
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * Returns the value of the '<em><b>In Group</b></em>' reference list, a derived union.
	 * @generated
	 */
	public EList getInGroups() {
		// TODO: test this union getter
		if (!getCacheAdapter().containsKey(this, UML2Package.eINSTANCE.getActivityEdge_InGroup())) {
			Set union = new LinkedHashSet();
			if (null != getInStructuredNode()) {
				union.add(getInStructuredNode());
			}
			union.addAll(getInPartitions());
			getCacheAdapter().put(
				this,
				UML2Package.eINSTANCE.getActivityEdge_InGroup(),
				new EcoreEList.UnmodifiableEList(this, 
					UML2Package.eINSTANCE.getActivityEdge_InGroup(),
					union.size(),
					union.toArray()));
		}
		return (EList) getCacheAdapter().get(this, UML2Package.eINSTANCE.getActivityEdge_InGroup());
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * Returns the value of the '<em><b>Guard</b></em>' containment reference.
	 * <p>
	 * Subsets the following features:
	 * <ul>
	 *   <li>{@link org.eclipse.uml2.Element#getOwnedElements}</li>
	 * </ul>
	 * </p>
	 * @generated
	 */
	public ValueSpecification getGuard() {
		return guard;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public NotificationChain basicSetGuard(ValueSpecification newGuard, NotificationChain msgs) {
		ValueSpecification oldGuard = guard;
		guard = newGuard;
		if (eNotificationRequired()) {
			ENotificationImpl notification = new ENotificationImpl(this, Notification.SET, UML2Package.ACTIVITY_EDGE__GUARD, oldGuard, newGuard);
			if (msgs == null) msgs = notification; else msgs.add(notification);
		}
		return msgs;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void setGuard(ValueSpecification newGuard) {
		if (newGuard != guard) {
			NotificationChain msgs = null;
			if (guard != null)
				msgs = ((InternalEObject)guard).eInverseRemove(this, EOPPOSITE_FEATURE_BASE - UML2Package.ACTIVITY_EDGE__GUARD, null, msgs);
			if (newGuard != null)
				msgs = ((InternalEObject)newGuard).eInverseAdd(this, EOPPOSITE_FEATURE_BASE - UML2Package.ACTIVITY_EDGE__GUARD, null, msgs);
			msgs = basicSetGuard(newGuard, msgs);
			if (msgs != null) msgs.dispatch();
		}
		else if (eNotificationRequired())
			eNotify(new ENotificationImpl(this, Notification.SET, UML2Package.ACTIVITY_EDGE__GUARD, newGuard, newGuard));
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public ValueSpecification createGuard(EClass eClass) {
		ValueSpecification newGuard = (ValueSpecification) eClass.getEPackage().getEFactoryInstance().create(eClass);
		if (eNotificationRequired()) {
			eNotify(new ENotificationImpl(this, Notification.CREATE, UML2Package.ACTIVITY_EDGE__GUARD, null, newGuard));
		}
        setGuard(newGuard);
		return newGuard;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * Returns the value of the '<em><b>Redefined Element</b></em>' reference list.
	 * <p>
	 * Redefines the following features:
	 * <ul>
	 *   <li>{@link org.eclipse.uml2.RedefinableElement#getRedefinedElements}</li>
	 * </ul>
	 * </p>
	 * @generated
	 */
	public EList getRedefinedElements() {
		if (redefinedElement == null) {
			redefinedElement = new EObjectResolvingEList(ActivityEdge.class, this, UML2Package.ACTIVITY_EDGE__REDEFINED_ELEMENT);
		}
		return redefinedElement;
	}

    /**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
     */
    public ActivityEdge getRedefinedElement(String unqualifiedName) {
    	for (Iterator i = getRedefinedElements().iterator(); i.hasNext(); ) {
    		ActivityEdge namedRedefinedElement = (ActivityEdge) i.next();
    		
    		if (unqualifiedName.equals(namedRedefinedElement.getName())) {
    			return namedRedefinedElement;
    		}
    	}
    	
    	return null;
    }
      
	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * Returns the value of the '<em><b>In Structured Node</b></em>' container reference.
	 * <p>
	 * Subsets the following features:
	 * <ul>
	 *   <li>{@link org.eclipse.uml2.ActivityEdge#getInGroups}</li>
	 * </ul>
	 * </p>
	 * @generated
	 */
	public StructuredActivityNode getInStructuredNode() {
		if (eContainerFeatureID != UML2Package.ACTIVITY_EDGE__IN_STRUCTURED_NODE) return null;
		return (StructuredActivityNode)eContainer;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void setInStructuredNode(StructuredActivityNode newInStructuredNode) {
		if (newInStructuredNode != eContainer || (eContainerFeatureID != UML2Package.ACTIVITY_EDGE__IN_STRUCTURED_NODE && newInStructuredNode != null)) {
			if (EcoreUtil.isAncestor(this, newInStructuredNode))
				throw new IllegalArgumentException("Recursive containment not allowed for " + toString()); //$NON-NLS-1$
			NotificationChain msgs = null;
			if (eContainer != null)
				msgs = eBasicRemoveFromContainer(msgs);
			if (newInStructuredNode != null)
				msgs = ((InternalEObject)newInStructuredNode).eInverseAdd(this, UML2Package.STRUCTURED_ACTIVITY_NODE__CONTAINED_EDGE, StructuredActivityNode.class, msgs);
			msgs = eBasicSetContainer((InternalEObject)newInStructuredNode, UML2Package.ACTIVITY_EDGE__IN_STRUCTURED_NODE, msgs);
			if (msgs != null) msgs.dispatch();
		}
		else if (eNotificationRequired())
			eNotify(new ENotificationImpl(this, Notification.SET, UML2Package.ACTIVITY_EDGE__IN_STRUCTURED_NODE, newInStructuredNode, newInStructuredNode));
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * Returns the value of the '<em><b>In Partition</b></em>' reference list.
	 * <p>
	 * Subsets the following features:
	 * <ul>
	 *   <li>{@link org.eclipse.uml2.ActivityEdge#getInGroups}</li>
	 * </ul>
	 * </p>
	 * @generated
	 */
	public EList getInPartitions() {
		if (inPartition == null) {
			inPartition = new EObjectWithInverseResolvingEList.ManyInverse(ActivityPartition.class, this, UML2Package.ACTIVITY_EDGE__IN_PARTITION, UML2Package.ACTIVITY_PARTITION__CONTAINED_EDGE);
		}
		return inPartition;
	}

    /**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
     */
    public ActivityPartition getInPartition(String unqualifiedName) {
    	for (Iterator i = getInPartitions().iterator(); i.hasNext(); ) {
    		ActivityPartition namedInPartition = (ActivityPartition) i.next();
    		
    		if (unqualifiedName.equals(namedInPartition.getName())) {
    			return namedInPartition;
    		}
    	}
    	
    	return null;
    }
      
	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * Returns the value of the '<em><b>Weight</b></em>' containment reference.
	 * <p>
	 * Subsets the following features:
	 * <ul>
	 *   <li>{@link org.eclipse.uml2.Element#getOwnedElements}</li>
	 * </ul>
	 * </p>
	 * @generated
	 */
	public ValueSpecification getWeight() {
		return weight;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public NotificationChain basicSetWeight(ValueSpecification newWeight, NotificationChain msgs) {
		ValueSpecification oldWeight = weight;
		weight = newWeight;
		if (eNotificationRequired()) {
			ENotificationImpl notification = new ENotificationImpl(this, Notification.SET, UML2Package.ACTIVITY_EDGE__WEIGHT, oldWeight, newWeight);
			if (msgs == null) msgs = notification; else msgs.add(notification);
		}
		return msgs;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void setWeight(ValueSpecification newWeight) {
		if (newWeight != weight) {
			NotificationChain msgs = null;
			if (weight != null)
				msgs = ((InternalEObject)weight).eInverseRemove(this, EOPPOSITE_FEATURE_BASE - UML2Package.ACTIVITY_EDGE__WEIGHT, null, msgs);
			if (newWeight != null)
				msgs = ((InternalEObject)newWeight).eInverseAdd(this, EOPPOSITE_FEATURE_BASE - UML2Package.ACTIVITY_EDGE__WEIGHT, null, msgs);
			msgs = basicSetWeight(newWeight, msgs);
			if (msgs != null) msgs.dispatch();
		}
		else if (eNotificationRequired())
			eNotify(new ENotificationImpl(this, Notification.SET, UML2Package.ACTIVITY_EDGE__WEIGHT, newWeight, newWeight));
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public ValueSpecification createWeight(EClass eClass) {
		ValueSpecification newWeight = (ValueSpecification) eClass.getEPackage().getEFactoryInstance().create(eClass);
		if (eNotificationRequired()) {
			eNotify(new ENotificationImpl(this, Notification.CREATE, UML2Package.ACTIVITY_EDGE__WEIGHT, null, newWeight));
		}
        setWeight(newWeight);
		return newWeight;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * Returns the value of the '<em><b>Interrupts</b></em>' reference.
	 * @generated
	 */
	public InterruptibleActivityRegion getInterrupts() {
		if (interrupts != null && interrupts.eIsProxy()) {
			InterruptibleActivityRegion oldInterrupts = interrupts;
			interrupts = (InterruptibleActivityRegion)eResolveProxy((InternalEObject)interrupts);
			if (interrupts != oldInterrupts) {
				if (eNotificationRequired())
					eNotify(new ENotificationImpl(this, Notification.RESOLVE, UML2Package.ACTIVITY_EDGE__INTERRUPTS, oldInterrupts, interrupts));
			}
		}
		return interrupts;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * Returns the value of the '<em><b>Interrupts</b></em>' reference.
	 * @generated
	 */
	public InterruptibleActivityRegion basicGetInterrupts() {
		return interrupts;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public NotificationChain basicSetInterrupts(InterruptibleActivityRegion newInterrupts, NotificationChain msgs) {
		InterruptibleActivityRegion oldInterrupts = interrupts;
		interrupts = newInterrupts;
		if (eNotificationRequired()) {
			ENotificationImpl notification = new ENotificationImpl(this, Notification.SET, UML2Package.ACTIVITY_EDGE__INTERRUPTS, oldInterrupts, newInterrupts);
			if (msgs == null) msgs = notification; else msgs.add(notification);
		}
		return msgs;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void setInterrupts(InterruptibleActivityRegion newInterrupts) {
		if (newInterrupts != interrupts) {
			NotificationChain msgs = null;
			if (interrupts != null)
				msgs = ((InternalEObject)interrupts).eInverseRemove(this, UML2Package.INTERRUPTIBLE_ACTIVITY_REGION__INTERRUPTING_EDGE, InterruptibleActivityRegion.class, msgs);
			if (newInterrupts != null)
				msgs = ((InternalEObject)newInterrupts).eInverseAdd(this, UML2Package.INTERRUPTIBLE_ACTIVITY_REGION__INTERRUPTING_EDGE, InterruptibleActivityRegion.class, msgs);
			msgs = basicSetInterrupts(newInterrupts, msgs);
			if (msgs != null) msgs.dispatch();
		}
		else if (eNotificationRequired())
			eNotify(new ENotificationImpl(this, Notification.SET, UML2Package.ACTIVITY_EDGE__INTERRUPTS, newInterrupts, newInterrupts));
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * Returns the value of the '<em><b>Owner</b></em>' reference, a derived union.
	 * It is bidirectional and its opposite is '{@link org.eclipse.uml2.Element#getOwnedElements <em>Owned Element</em>}'.
	 * @generated
	 */
	public Element basicGetOwner() {
		// TODO: test this union basic getter
		if (null != getActivity()) {
			return (Element) getActivity();
		}
		return super.basicGetOwner();
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * Returns the value of the '<em><b>Owned Element</b></em>' reference list, a derived union.
	 * The list contents are of type {@link org.eclipse.uml2.Element}.
	 * It is bidirectional and its opposite is '{@link org.eclipse.uml2.Element#getOwner <em>Owner</em>}'.
	 * @generated
	 */
	public EList getOwnedElements() {
		// TODO: test this union getter
		if (!getCacheAdapter().containsKey(this, UML2Package.eINSTANCE.getElement_OwnedElement())) {
			Set union = new LinkedHashSet();
			union.addAll(super.getOwnedElements());
			if (null != getGuard()) {
				union.add(getGuard());
			}
			if (null != getWeight()) {
				union.add(getWeight());
			}
			getCacheAdapter().put(
				this,
				UML2Package.eINSTANCE.getElement_OwnedElement(),
				new EcoreEList.UnmodifiableEList(this, 
					UML2Package.eINSTANCE.getElement_OwnedElement(),
					union.size(),
					union.toArray()));
		}
		return (EList) getCacheAdapter().get(this, UML2Package.eINSTANCE.getElement_OwnedElement());
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public NotificationChain eInverseAdd(InternalEObject otherEnd, int featureID, Class baseClass, NotificationChain msgs) {
		if (featureID >= 0) {
			switch (eDerivedStructuralFeatureID(featureID, baseClass)) {
				case UML2Package.ACTIVITY_EDGE__EANNOTATIONS:
					return ((InternalEList)getEAnnotations()).basicAdd(otherEnd, msgs);
				case UML2Package.ACTIVITY_EDGE__TEMPLATE_BINDING:
					return ((InternalEList)getTemplateBindings()).basicAdd(otherEnd, msgs);
				case UML2Package.ACTIVITY_EDGE__OWNED_TEMPLATE_SIGNATURE:
					if (ownedTemplateSignature != null)
						msgs = ((InternalEObject)ownedTemplateSignature).eInverseRemove(this, EOPPOSITE_FEATURE_BASE - UML2Package.ACTIVITY_EDGE__OWNED_TEMPLATE_SIGNATURE, null, msgs);
					return basicSetOwnedTemplateSignature((TemplateSignature)otherEnd, msgs);
				case UML2Package.ACTIVITY_EDGE__CLIENT_DEPENDENCY:
					return ((InternalEList)getClientDependencies()).basicAdd(otherEnd, msgs);
				case UML2Package.ACTIVITY_EDGE__ACTIVITY:
					if (eContainer != null)
						msgs = eBasicRemoveFromContainer(msgs);
					return eBasicSetContainer(otherEnd, UML2Package.ACTIVITY_EDGE__ACTIVITY, msgs);
				case UML2Package.ACTIVITY_EDGE__SOURCE:
					if (source != null)
						msgs = ((InternalEObject)source).eInverseRemove(this, UML2Package.ACTIVITY_NODE__OUTGOING, ActivityNode.class, msgs);
					return basicSetSource((ActivityNode)otherEnd, msgs);
				case UML2Package.ACTIVITY_EDGE__TARGET:
					if (target != null)
						msgs = ((InternalEObject)target).eInverseRemove(this, UML2Package.ACTIVITY_NODE__INCOMING, ActivityNode.class, msgs);
					return basicSetTarget((ActivityNode)otherEnd, msgs);
				case UML2Package.ACTIVITY_EDGE__IN_STRUCTURED_NODE:
					if (eContainer != null)
						msgs = eBasicRemoveFromContainer(msgs);
					return eBasicSetContainer(otherEnd, UML2Package.ACTIVITY_EDGE__IN_STRUCTURED_NODE, msgs);
				case UML2Package.ACTIVITY_EDGE__IN_PARTITION:
					return ((InternalEList)getInPartitions()).basicAdd(otherEnd, msgs);
				case UML2Package.ACTIVITY_EDGE__INTERRUPTS:
					if (interrupts != null)
						msgs = ((InternalEObject)interrupts).eInverseRemove(this, UML2Package.INTERRUPTIBLE_ACTIVITY_REGION__INTERRUPTING_EDGE, InterruptibleActivityRegion.class, msgs);
					return basicSetInterrupts((InterruptibleActivityRegion)otherEnd, msgs);
				default:
					return eDynamicInverseAdd(otherEnd, featureID, baseClass, msgs);
			}
		}
		if (eContainer != null)
			msgs = eBasicRemoveFromContainer(msgs);
		return eBasicSetContainer(otherEnd, featureID, msgs);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public NotificationChain eInverseRemove(InternalEObject otherEnd, int featureID, Class baseClass, NotificationChain msgs) {
		if (featureID >= 0) {
			switch (eDerivedStructuralFeatureID(featureID, baseClass)) {
				case UML2Package.ACTIVITY_EDGE__EANNOTATIONS:
					return ((InternalEList)getEAnnotations()).basicRemove(otherEnd, msgs);
				case UML2Package.ACTIVITY_EDGE__OWNED_COMMENT:
					return ((InternalEList)getOwnedComments()).basicRemove(otherEnd, msgs);
				case UML2Package.ACTIVITY_EDGE__TEMPLATE_BINDING:
					return ((InternalEList)getTemplateBindings()).basicRemove(otherEnd, msgs);
				case UML2Package.ACTIVITY_EDGE__OWNED_TEMPLATE_SIGNATURE:
					return basicSetOwnedTemplateSignature(null, msgs);
				case UML2Package.ACTIVITY_EDGE__CLIENT_DEPENDENCY:
					return ((InternalEList)getClientDependencies()).basicRemove(otherEnd, msgs);
				case UML2Package.ACTIVITY_EDGE__NAME_EXPRESSION:
					return basicSetNameExpression(null, msgs);
				case UML2Package.ACTIVITY_EDGE__ACTIVITY:
					return eBasicSetContainer(null, UML2Package.ACTIVITY_EDGE__ACTIVITY, msgs);
				case UML2Package.ACTIVITY_EDGE__SOURCE:
					return basicSetSource(null, msgs);
				case UML2Package.ACTIVITY_EDGE__TARGET:
					return basicSetTarget(null, msgs);
				case UML2Package.ACTIVITY_EDGE__GUARD:
					return basicSetGuard(null, msgs);
				case UML2Package.ACTIVITY_EDGE__IN_STRUCTURED_NODE:
					return eBasicSetContainer(null, UML2Package.ACTIVITY_EDGE__IN_STRUCTURED_NODE, msgs);
				case UML2Package.ACTIVITY_EDGE__IN_PARTITION:
					return ((InternalEList)getInPartitions()).basicRemove(otherEnd, msgs);
				case UML2Package.ACTIVITY_EDGE__WEIGHT:
					return basicSetWeight(null, msgs);
				case UML2Package.ACTIVITY_EDGE__INTERRUPTS:
					return basicSetInterrupts(null, msgs);
				default:
					return eDynamicInverseRemove(otherEnd, featureID, baseClass, msgs);
			}
		}
		return eBasicSetContainer(null, featureID, msgs);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public NotificationChain eBasicRemoveFromContainer(NotificationChain msgs) {
		if (eContainerFeatureID >= 0) {
			switch (eContainerFeatureID) {
				case UML2Package.ACTIVITY_EDGE__ACTIVITY:
					return eContainer.eInverseRemove(this, UML2Package.ACTIVITY__EDGE, Activity.class, msgs);
				case UML2Package.ACTIVITY_EDGE__IN_STRUCTURED_NODE:
					return eContainer.eInverseRemove(this, UML2Package.STRUCTURED_ACTIVITY_NODE__CONTAINED_EDGE, StructuredActivityNode.class, msgs);
				default:
					return eDynamicBasicRemoveFromContainer(msgs);
			}
		}
		return eContainer.eInverseRemove(this, EOPPOSITE_FEATURE_BASE - eContainerFeatureID, null, msgs);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public Object eGet(EStructuralFeature eFeature, boolean resolve) {
		switch (eDerivedStructuralFeatureID(eFeature)) {
			case UML2Package.ACTIVITY_EDGE__EANNOTATIONS:
				return getEAnnotations();
			case UML2Package.ACTIVITY_EDGE__OWNED_ELEMENT:
				return getOwnedElements();
			case UML2Package.ACTIVITY_EDGE__OWNER:
				if (resolve) return getOwner();
				return basicGetOwner();
			case UML2Package.ACTIVITY_EDGE__OWNED_COMMENT:
				return getOwnedComments();
			case UML2Package.ACTIVITY_EDGE__TEMPLATE_BINDING:
				return getTemplateBindings();
			case UML2Package.ACTIVITY_EDGE__OWNED_TEMPLATE_SIGNATURE:
				return getOwnedTemplateSignature();
			case UML2Package.ACTIVITY_EDGE__NAME:
				return getName();
			case UML2Package.ACTIVITY_EDGE__QUALIFIED_NAME:
				return getQualifiedName();
			case UML2Package.ACTIVITY_EDGE__VISIBILITY:
				return getVisibility();
			case UML2Package.ACTIVITY_EDGE__CLIENT_DEPENDENCY:
				return getClientDependencies();
			case UML2Package.ACTIVITY_EDGE__NAME_EXPRESSION:
				return getNameExpression();
			case UML2Package.ACTIVITY_EDGE__REDEFINITION_CONTEXT:
				return getRedefinitionContexts();
			case UML2Package.ACTIVITY_EDGE__IS_LEAF:
				return isLeaf() ? Boolean.TRUE : Boolean.FALSE;
			case UML2Package.ACTIVITY_EDGE__ACTIVITY:
				return getActivity();
			case UML2Package.ACTIVITY_EDGE__SOURCE:
				if (resolve) return getSource();
				return basicGetSource();
			case UML2Package.ACTIVITY_EDGE__TARGET:
				if (resolve) return getTarget();
				return basicGetTarget();
			case UML2Package.ACTIVITY_EDGE__IN_GROUP:
				return getInGroups();
			case UML2Package.ACTIVITY_EDGE__GUARD:
				return getGuard();
			case UML2Package.ACTIVITY_EDGE__REDEFINED_ELEMENT:
				return getRedefinedElements();
			case UML2Package.ACTIVITY_EDGE__IN_STRUCTURED_NODE:
				return getInStructuredNode();
			case UML2Package.ACTIVITY_EDGE__IN_PARTITION:
				return getInPartitions();
			case UML2Package.ACTIVITY_EDGE__WEIGHT:
				return getWeight();
			case UML2Package.ACTIVITY_EDGE__INTERRUPTS:
				if (resolve) return getInterrupts();
				return basicGetInterrupts();
		}
		return eDynamicGet(eFeature, resolve);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void eSet(EStructuralFeature eFeature, Object newValue) {
		switch (eDerivedStructuralFeatureID(eFeature)) {
			case UML2Package.ACTIVITY_EDGE__EANNOTATIONS:
				getEAnnotations().clear();
				getEAnnotations().addAll((Collection)newValue);
				return;
			case UML2Package.ACTIVITY_EDGE__OWNED_COMMENT:
				getOwnedComments().clear();
				getOwnedComments().addAll((Collection)newValue);
				return;
			case UML2Package.ACTIVITY_EDGE__TEMPLATE_BINDING:
				getTemplateBindings().clear();
				getTemplateBindings().addAll((Collection)newValue);
				return;
			case UML2Package.ACTIVITY_EDGE__OWNED_TEMPLATE_SIGNATURE:
				setOwnedTemplateSignature((TemplateSignature)newValue);
				return;
			case UML2Package.ACTIVITY_EDGE__NAME:
				setName((String)newValue);
				return;
			case UML2Package.ACTIVITY_EDGE__VISIBILITY:
				setVisibility((VisibilityKind)newValue);
				return;
			case UML2Package.ACTIVITY_EDGE__CLIENT_DEPENDENCY:
				getClientDependencies().clear();
				getClientDependencies().addAll((Collection)newValue);
				return;
			case UML2Package.ACTIVITY_EDGE__NAME_EXPRESSION:
				setNameExpression((StringExpression)newValue);
				return;
			case UML2Package.ACTIVITY_EDGE__IS_LEAF:
				setIsLeaf(((Boolean)newValue).booleanValue());
				return;
			case UML2Package.ACTIVITY_EDGE__ACTIVITY:
				setActivity((Activity)newValue);
				return;
			case UML2Package.ACTIVITY_EDGE__SOURCE:
				setSource((ActivityNode)newValue);
				return;
			case UML2Package.ACTIVITY_EDGE__TARGET:
				setTarget((ActivityNode)newValue);
				return;
			case UML2Package.ACTIVITY_EDGE__GUARD:
				setGuard((ValueSpecification)newValue);
				return;
			case UML2Package.ACTIVITY_EDGE__REDEFINED_ELEMENT:
				getRedefinedElements().clear();
				getRedefinedElements().addAll((Collection)newValue);
				return;
			case UML2Package.ACTIVITY_EDGE__IN_STRUCTURED_NODE:
				setInStructuredNode((StructuredActivityNode)newValue);
				return;
			case UML2Package.ACTIVITY_EDGE__IN_PARTITION:
				getInPartitions().clear();
				getInPartitions().addAll((Collection)newValue);
				return;
			case UML2Package.ACTIVITY_EDGE__WEIGHT:
				setWeight((ValueSpecification)newValue);
				return;
			case UML2Package.ACTIVITY_EDGE__INTERRUPTS:
				setInterrupts((InterruptibleActivityRegion)newValue);
				return;
		}
		eDynamicSet(eFeature, newValue);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void eUnset(EStructuralFeature eFeature) {
		switch (eDerivedStructuralFeatureID(eFeature)) {
			case UML2Package.ACTIVITY_EDGE__EANNOTATIONS:
				getEAnnotations().clear();
				return;
			case UML2Package.ACTIVITY_EDGE__OWNED_COMMENT:
				getOwnedComments().clear();
				return;
			case UML2Package.ACTIVITY_EDGE__TEMPLATE_BINDING:
				getTemplateBindings().clear();
				return;
			case UML2Package.ACTIVITY_EDGE__OWNED_TEMPLATE_SIGNATURE:
				setOwnedTemplateSignature((TemplateSignature)null);
				return;
			case UML2Package.ACTIVITY_EDGE__NAME:
				setName(NAME_EDEFAULT);
				return;
			case UML2Package.ACTIVITY_EDGE__VISIBILITY:
				setVisibility(VISIBILITY_EDEFAULT);
				return;
			case UML2Package.ACTIVITY_EDGE__CLIENT_DEPENDENCY:
				getClientDependencies().clear();
				return;
			case UML2Package.ACTIVITY_EDGE__NAME_EXPRESSION:
				setNameExpression((StringExpression)null);
				return;
			case UML2Package.ACTIVITY_EDGE__IS_LEAF:
				setIsLeaf(IS_LEAF_EDEFAULT);
				return;
			case UML2Package.ACTIVITY_EDGE__ACTIVITY:
				setActivity((Activity)null);
				return;
			case UML2Package.ACTIVITY_EDGE__SOURCE:
				setSource((ActivityNode)null);
				return;
			case UML2Package.ACTIVITY_EDGE__TARGET:
				setTarget((ActivityNode)null);
				return;
			case UML2Package.ACTIVITY_EDGE__GUARD:
				setGuard((ValueSpecification)null);
				return;
			case UML2Package.ACTIVITY_EDGE__REDEFINED_ELEMENT:
				getRedefinedElements().clear();
				return;
			case UML2Package.ACTIVITY_EDGE__IN_STRUCTURED_NODE:
				setInStructuredNode((StructuredActivityNode)null);
				return;
			case UML2Package.ACTIVITY_EDGE__IN_PARTITION:
				getInPartitions().clear();
				return;
			case UML2Package.ACTIVITY_EDGE__WEIGHT:
				setWeight((ValueSpecification)null);
				return;
			case UML2Package.ACTIVITY_EDGE__INTERRUPTS:
				setInterrupts((InterruptibleActivityRegion)null);
				return;
		}
		eDynamicUnset(eFeature);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public boolean eIsSet(EStructuralFeature eFeature) {
		switch (eDerivedStructuralFeatureID(eFeature)) {
			case UML2Package.ACTIVITY_EDGE__EANNOTATIONS:
				return eAnnotations != null && !eAnnotations.isEmpty();
			case UML2Package.ACTIVITY_EDGE__OWNED_ELEMENT:
				return !getOwnedElements().isEmpty();
			case UML2Package.ACTIVITY_EDGE__OWNER:
				return basicGetOwner() != null;
			case UML2Package.ACTIVITY_EDGE__OWNED_COMMENT:
				return ownedComment != null && !ownedComment.isEmpty();
			case UML2Package.ACTIVITY_EDGE__TEMPLATE_BINDING:
				return templateBinding != null && !templateBinding.isEmpty();
			case UML2Package.ACTIVITY_EDGE__OWNED_TEMPLATE_SIGNATURE:
				return ownedTemplateSignature != null;
			case UML2Package.ACTIVITY_EDGE__NAME:
				return NAME_EDEFAULT == null ? name != null : !NAME_EDEFAULT.equals(name);
			case UML2Package.ACTIVITY_EDGE__QUALIFIED_NAME:
				return !"".equals(getQualifiedName()); //$NON-NLS-1$
			case UML2Package.ACTIVITY_EDGE__VISIBILITY:
				return visibility != VISIBILITY_EDEFAULT;
			case UML2Package.ACTIVITY_EDGE__CLIENT_DEPENDENCY:
				return clientDependency != null && !clientDependency.isEmpty();
			case UML2Package.ACTIVITY_EDGE__NAME_EXPRESSION:
				return nameExpression != null;
			case UML2Package.ACTIVITY_EDGE__REDEFINITION_CONTEXT:
				return !getRedefinitionContexts().isEmpty();
			case UML2Package.ACTIVITY_EDGE__IS_LEAF:
				return isLeaf != IS_LEAF_EDEFAULT;
			case UML2Package.ACTIVITY_EDGE__ACTIVITY:
				return getActivity() != null;
			case UML2Package.ACTIVITY_EDGE__SOURCE:
				return source != null;
			case UML2Package.ACTIVITY_EDGE__TARGET:
				return target != null;
			case UML2Package.ACTIVITY_EDGE__IN_GROUP:
				return !getInGroups().isEmpty();
			case UML2Package.ACTIVITY_EDGE__GUARD:
				return guard != null;
			case UML2Package.ACTIVITY_EDGE__REDEFINED_ELEMENT:
				return redefinedElement != null && !redefinedElement.isEmpty();
			case UML2Package.ACTIVITY_EDGE__IN_STRUCTURED_NODE:
				return getInStructuredNode() != null;
			case UML2Package.ACTIVITY_EDGE__IN_PARTITION:
				return inPartition != null && !inPartition.isEmpty();
			case UML2Package.ACTIVITY_EDGE__WEIGHT:
				return weight != null;
			case UML2Package.ACTIVITY_EDGE__INTERRUPTS:
				return interrupts != null;
		}
		return eDynamicIsSet(eFeature);
	}

} //ActivityEdgeImpl