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/*
 * Copyright (c) 2012 - 2024 Data In Motion and others.
 * All rights reserved. 
 * 
 * This program and the accompanying materials are made
 * available under the terms of the Eclipse Public License 2.0
 * which is available at https://www.eclipse.org/legal/epl-2.0/
 * 
 * SPDX-License-Identifier: EPL-2.0
 * 
 * Contributors:
 *      Mark Hoffmann - initial API and implementation
 */
package org.omg.bpmn.bpmn2.impl;

import org.eclipse.emf.common.notify.Notification;

import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.InternalEObject;

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

import org.omg.bpmn.bpmn2.Association;
import org.omg.bpmn.bpmn2.AssociationDirection;
import org.omg.bpmn.bpmn2.BaseElement;
import org.omg.bpmn.bpmn2.Bpmn2Package;

/**
 * 
 * An implementation of the model object 'Association'.
 * 
 * 
 * The following features are implemented:
 * 
 * 
 *   {@link org.omg.bpmn.bpmn2.impl.AssociationImpl#getAssociationDirection Association Direction}
 *   {@link org.omg.bpmn.bpmn2.impl.AssociationImpl#getSourceRef Source Ref}
 *   {@link org.omg.bpmn.bpmn2.impl.AssociationImpl#getTargetRef Target Ref}
 * 
 *
 * @generated
 */
public class AssociationImpl extends ArtifactImpl implements Association {
	/**
	 * The default value of the '{@link #getAssociationDirection() Association Direction}' attribute.
	 * 
	 * 
	 * @see #getAssociationDirection()
	 * @generated
	 * @ordered
	 */
	protected static final AssociationDirection ASSOCIATION_DIRECTION_EDEFAULT = AssociationDirection.NONE;

	/**
	 * The cached value of the '{@link #getAssociationDirection() Association Direction}' attribute.
	 * 
	 * 
	 * @see #getAssociationDirection()
	 * @generated
	 * @ordered
	 */
	protected AssociationDirection associationDirection = ASSOCIATION_DIRECTION_EDEFAULT;

	/**
	 * The cached value of the '{@link #getSourceRef() Source Ref}' reference.
	 * 
	 * 
	 * @see #getSourceRef()
	 * @generated
	 * @ordered
	 */
	protected BaseElement sourceRef;

	/**
	 * The cached value of the '{@link #getTargetRef() Target Ref}' reference.
	 * 
	 * 
	 * @see #getTargetRef()
	 * @generated
	 * @ordered
	 */
	protected BaseElement targetRef;

	/**
	 * 
	 * 
	 * @generated
	 */
	protected AssociationImpl() {
		super();
	}

	/**
	 * 
	 * 
	 * @generated
	 */
	@Override
	protected EClass eStaticClass() {
		return Bpmn2Package.eINSTANCE.getAssociation();
	}

	/**
	 * 
	 * 
	 * @generated
	 */
	@Override
	public AssociationDirection getAssociationDirection() {
		return associationDirection;
	}

	/**
	 * 
	 * 
	 * @generated
	 */
	@Override
	public void setAssociationDirection(AssociationDirection newAssociationDirection) {
		AssociationDirection oldAssociationDirection = associationDirection;
		associationDirection = newAssociationDirection == null ? ASSOCIATION_DIRECTION_EDEFAULT : newAssociationDirection;
		if (eNotificationRequired())
			eNotify(new ENotificationImpl(this, Notification.SET, Bpmn2Package.ASSOCIATION__ASSOCIATION_DIRECTION, oldAssociationDirection, associationDirection));
	}

	/**
	 * 
	 * 
	 * @generated
	 */
	@Override
	public BaseElement getSourceRef() {
		if (sourceRef != null && sourceRef.eIsProxy()) {
			InternalEObject oldSourceRef = (InternalEObject)sourceRef;
			sourceRef = (BaseElement)eResolveProxy(oldSourceRef);
			if (sourceRef != oldSourceRef) {
				if (eNotificationRequired())
					eNotify(new ENotificationImpl(this, Notification.RESOLVE, Bpmn2Package.ASSOCIATION__SOURCE_REF, oldSourceRef, sourceRef));
			}
		}
		return sourceRef;
	}

	/**
	 * 
	 * 
	 * @generated
	 */
	public BaseElement basicGetSourceRef() {
		return sourceRef;
	}

	/**
	 * 
	 * 
	 * @generated
	 */
	@Override
	public void setSourceRef(BaseElement newSourceRef) {
		BaseElement oldSourceRef = sourceRef;
		sourceRef = newSourceRef;
		if (eNotificationRequired())
			eNotify(new ENotificationImpl(this, Notification.SET, Bpmn2Package.ASSOCIATION__SOURCE_REF, oldSourceRef, sourceRef));
	}

	/**
	 * 
	 * 
	 * @generated
	 */
	@Override
	public BaseElement getTargetRef() {
		if (targetRef != null && targetRef.eIsProxy()) {
			InternalEObject oldTargetRef = (InternalEObject)targetRef;
			targetRef = (BaseElement)eResolveProxy(oldTargetRef);
			if (targetRef != oldTargetRef) {
				if (eNotificationRequired())
					eNotify(new ENotificationImpl(this, Notification.RESOLVE, Bpmn2Package.ASSOCIATION__TARGET_REF, oldTargetRef, targetRef));
			}
		}
		return targetRef;
	}

	/**
	 * 
	 * 
	 * @generated
	 */
	public BaseElement basicGetTargetRef() {
		return targetRef;
	}

	/**
	 * 
	 * 
	 * @generated
	 */
	@Override
	public void setTargetRef(BaseElement newTargetRef) {
		BaseElement oldTargetRef = targetRef;
		targetRef = newTargetRef;
		if (eNotificationRequired())
			eNotify(new ENotificationImpl(this, Notification.SET, Bpmn2Package.ASSOCIATION__TARGET_REF, oldTargetRef, targetRef));
	}

	/**
	 * 
	 * 
	 * @generated
	 */
	@Override
	public Object eGet(int featureID, boolean resolve, boolean coreType) {
		switch (featureID) {
			case Bpmn2Package.ASSOCIATION__ASSOCIATION_DIRECTION:
				return getAssociationDirection();
			case Bpmn2Package.ASSOCIATION__SOURCE_REF:
				if (resolve) return getSourceRef();
				return basicGetSourceRef();
			case Bpmn2Package.ASSOCIATION__TARGET_REF:
				if (resolve) return getTargetRef();
				return basicGetTargetRef();
		}
		return super.eGet(featureID, resolve, coreType);
	}

	/**
	 * 
	 * 
	 * @generated
	 */
	@Override
	public void eSet(int featureID, Object newValue) {
		switch (featureID) {
			case Bpmn2Package.ASSOCIATION__ASSOCIATION_DIRECTION:
				setAssociationDirection((AssociationDirection)newValue);
				return;
			case Bpmn2Package.ASSOCIATION__SOURCE_REF:
				setSourceRef((BaseElement)newValue);
				return;
			case Bpmn2Package.ASSOCIATION__TARGET_REF:
				setTargetRef((BaseElement)newValue);
				return;
		}
		super.eSet(featureID, newValue);
	}

	/**
	 * 
	 * 
	 * @generated
	 */
	@Override
	public void eUnset(int featureID) {
		switch (featureID) {
			case Bpmn2Package.ASSOCIATION__ASSOCIATION_DIRECTION:
				setAssociationDirection(ASSOCIATION_DIRECTION_EDEFAULT);
				return;
			case Bpmn2Package.ASSOCIATION__SOURCE_REF:
				setSourceRef((BaseElement)null);
				return;
			case Bpmn2Package.ASSOCIATION__TARGET_REF:
				setTargetRef((BaseElement)null);
				return;
		}
		super.eUnset(featureID);
	}

	/**
	 * 
	 * 
	 * @generated
	 */
	@Override
	public boolean eIsSet(int featureID) {
		switch (featureID) {
			case Bpmn2Package.ASSOCIATION__ASSOCIATION_DIRECTION:
				return associationDirection != ASSOCIATION_DIRECTION_EDEFAULT;
			case Bpmn2Package.ASSOCIATION__SOURCE_REF:
				return sourceRef != null;
			case Bpmn2Package.ASSOCIATION__TARGET_REF:
				return targetRef != null;
		}
		return super.eIsSet(featureID);
	}

	/**
	 * 
	 * 
	 * @generated
	 */
	@Override
	public String toString() {
		if (eIsProxy()) return super.toString();

		StringBuilder result = new StringBuilder(super.toString());
		result.append(" (associationDirection: ");
		result.append(associationDirection);
		result.append(')');
		return result.toString();
	}

} //AssociationImpl