plugins/org.eclipse.ocl.ecore/src/org/eclipse/ocl/ecore/impl/ConstraintImpl.java

/*******************************************************************************
 * Copyright (c) 2006, 2018 IBM Corporation and others.
 * All rights reserved.   This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v2.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v20.html
 * 
 * Contributors:
 *   IBM - Initial API and implementation
 *******************************************************************************/
package org.eclipse.ocl.ecore.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.EClassifier;
import org.eclipse.emf.ecore.EModelElement;
import org.eclipse.emf.ecore.EParameter;
import org.eclipse.emf.ecore.InternalEObject;
import org.eclipse.emf.ecore.impl.ENamedElementImpl;
import org.eclipse.emf.ecore.impl.ENotificationImpl;
import org.eclipse.emf.ecore.util.EObjectResolvingEList;
import org.eclipse.ocl.ecore.Constraint;
import org.eclipse.ocl.ecore.EcorePackage;
import org.eclipse.ocl.ecore.utilities.ToStringVisitor;
import org.eclipse.ocl.utilities.ExpressionInOCL;

/**
 * <!-- begin-user-doc -->
 * An implementation of the model object '<em><b>Constraint</b></em>'.
 * <!-- end-user-doc -->
 * <p>
 * The following features are implemented:
 * </p>
 * <ul>
 *   <li>{@link org.eclipse.ocl.ecore.impl.ConstraintImpl#getSpecification <em>Specification</em>}</li>
 *   <li>{@link org.eclipse.ocl.ecore.impl.ConstraintImpl#getConstrainedElements <em>Constrained Elements</em>}</li>
 *   <li>{@link org.eclipse.ocl.ecore.impl.ConstraintImpl#getStereotype <em>Stereotype</em>}</li>
 * </ul>
 *
 * @generated
 */
public class ConstraintImpl
		extends ENamedElementImpl
		implements Constraint {

	/**
	 * The cached value of the '{@link #getSpecification() <em>Specification</em>}' containment reference.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getSpecification()
	 * @generated
	 * @ordered
	 */
	protected ExpressionInOCL<EClassifier, EParameter> specification;

	/**
	 * The cached value of the '{@link #getConstrainedElements() <em>Constrained Elements</em>}' reference list.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getConstrainedElements()
	 * @generated
	 * @ordered
	 */
	protected EList<EModelElement> constrainedElements;

	/**
	 * The default value of the '{@link #getStereotype() <em>Stereotype</em>}' attribute.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getStereotype()
	 * @generated
	 * @ordered
	 */
	protected static final String STEREOTYPE_EDEFAULT = null;

	/**
	 * The cached value of the '{@link #getStereotype() <em>Stereotype</em>}' attribute.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getStereotype()
	 * @generated
	 * @ordered
	 */
	protected String stereotype = STEREOTYPE_EDEFAULT;

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

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

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public ExpressionInOCL<EClassifier, EParameter> getSpecification() {
		return specification;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public NotificationChain basicSetSpecification(
			ExpressionInOCL<EClassifier, EParameter> newSpecification,
			NotificationChain msgs) {
		ExpressionInOCL<EClassifier, EParameter> oldSpecification = specification;
		specification = newSpecification;
		if (eNotificationRequired()) {
			ENotificationImpl notification = new ENotificationImpl(this,
				Notification.SET, EcorePackage.CONSTRAINT__SPECIFICATION,
				oldSpecification, newSpecification);
			if (msgs == null)
				msgs = notification;
			else
				msgs.add(notification);
		}
		return msgs;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void setSpecification(
			ExpressionInOCL<EClassifier, EParameter> newSpecification) {
		if (newSpecification != specification) {
			NotificationChain msgs = null;
			if (specification != null)
				msgs = ((InternalEObject) specification)
					.eInverseRemove(this,
						EOPPOSITE_FEATURE_BASE
							- EcorePackage.CONSTRAINT__SPECIFICATION,
						null, msgs);
			if (newSpecification != null)
				msgs = ((InternalEObject) newSpecification)
					.eInverseAdd(this,
						EOPPOSITE_FEATURE_BASE
							- EcorePackage.CONSTRAINT__SPECIFICATION,
						null, msgs);
			msgs = basicSetSpecification(newSpecification, msgs);
			if (msgs != null)
				msgs.dispatch();
		} else if (eNotificationRequired())
			eNotify(new ENotificationImpl(this, Notification.SET,
				EcorePackage.CONSTRAINT__SPECIFICATION, newSpecification,
				newSpecification));
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public EList<EModelElement> getConstrainedElements() {
		if (constrainedElements == null) {
			constrainedElements = new EObjectResolvingEList<EModelElement>(
				EModelElement.class, this,
				EcorePackage.CONSTRAINT__CONSTRAINED_ELEMENTS);
		}
		return constrainedElements;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public String getStereotype() {
		return stereotype;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void setStereotype(String newStereotype) {
		String oldStereotype = stereotype;
		stereotype = newStereotype;
		if (eNotificationRequired())
			eNotify(new ENotificationImpl(this, Notification.SET,
				EcorePackage.CONSTRAINT__STEREOTYPE, oldStereotype,
				stereotype));
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public NotificationChain eInverseRemove(InternalEObject otherEnd,
			int featureID, NotificationChain msgs) {
		switch (featureID) {
			case EcorePackage.CONSTRAINT__SPECIFICATION :
				return basicSetSpecification(null, 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 EcorePackage.CONSTRAINT__SPECIFICATION :
				return getSpecification();
			case EcorePackage.CONSTRAINT__CONSTRAINED_ELEMENTS :
				return getConstrainedElements();
			case EcorePackage.CONSTRAINT__STEREOTYPE :
				return getStereotype();
		}
		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 EcorePackage.CONSTRAINT__SPECIFICATION :
				setSpecification(
					(ExpressionInOCL<EClassifier, EParameter>) newValue);
				return;
			case EcorePackage.CONSTRAINT__CONSTRAINED_ELEMENTS :
				getConstrainedElements().clear();
				getConstrainedElements()
					.addAll((Collection<? extends EModelElement>) newValue);
				return;
			case EcorePackage.CONSTRAINT__STEREOTYPE :
				setStereotype((String) newValue);
				return;
		}
		super.eSet(featureID, newValue);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public void eUnset(int featureID) {
		switch (featureID) {
			case EcorePackage.CONSTRAINT__SPECIFICATION :
				setSpecification(
					(ExpressionInOCL<EClassifier, EParameter>) null);
				return;
			case EcorePackage.CONSTRAINT__CONSTRAINED_ELEMENTS :
				getConstrainedElements().clear();
				return;
			case EcorePackage.CONSTRAINT__STEREOTYPE :
				setStereotype(STEREOTYPE_EDEFAULT);
				return;
		}
		super.eUnset(featureID);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public boolean eIsSet(int featureID) {
		switch (featureID) {
			case EcorePackage.CONSTRAINT__SPECIFICATION :
				return specification != null;
			case EcorePackage.CONSTRAINT__CONSTRAINED_ELEMENTS :
				return constrainedElements != null
					&& !constrainedElements.isEmpty();
			case EcorePackage.CONSTRAINT__STEREOTYPE :
				return STEREOTYPE_EDEFAULT == null
					? stereotype != null
					: !STEREOTYPE_EDEFAULT.equals(stereotype);
		}
		return super.eIsSet(featureID);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated NOT
	 */
	@Override
	public String toString() {
		if (eIsProxy()) {
			return super.toString();
		}

		return ToStringVisitor
			.getInstance(getSpecification().getContextVariable())
			.visitConstraint(this);
	}

} //ConstraintImpl