/*
 * 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: ConstraintImpl.java,v 1.13 2006/03/01 17:56:38 khussey Exp $
 */
package org.eclipse.uml2.uml.internal.impl;

import java.util.Collection;
import java.util.Map;

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

import org.eclipse.emf.common.util.DiagnosticChain;

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

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

import org.eclipse.uml2.uml.Constraint;
import org.eclipse.uml2.uml.Element;
import org.eclipse.uml2.uml.Namespace;
import org.eclipse.uml2.uml.StringExpression;
import org.eclipse.uml2.uml.TemplateParameter;
import org.eclipse.uml2.uml.Type;
import org.eclipse.uml2.uml.UMLPackage;
import org.eclipse.uml2.uml.ValueSpecification;
import org.eclipse.uml2.uml.VisibilityKind;

import org.eclipse.uml2.uml.internal.operations.ConstraintOperations;

/**
 * <!-- begin-user-doc -->
 * An implementation of the model object '<em><b>Constraint</b></em>'.
 * <!-- end-user-doc -->
 * <p>
 * The following features are implemented:
 * <ul>
 *   <li>{@link org.eclipse.uml2.uml.internal.impl.ConstraintImpl#getOwnedElements <em>Owned Element</em>}</li>
 *   <li>{@link org.eclipse.uml2.uml.internal.impl.ConstraintImpl#getConstrainedElements <em>Constrained Element</em>}</li>
 *   <li>{@link org.eclipse.uml2.uml.internal.impl.ConstraintImpl#getSpecification <em>Specification</em>}</li>
 *   <li>{@link org.eclipse.uml2.uml.internal.impl.ConstraintImpl#getContext <em>Context</em>}</li>
 * </ul>
 * </p>
 *
 * @generated
 */
public class ConstraintImpl
		extends PackageableElementImpl
		implements Constraint {

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

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

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public EList getOwnedElements() {
		EList ownedElement = (EList) eVirtualGet(UMLPackage.CONSTRAINT__OWNED_ELEMENT);
		if (ownedElement == null) {
			eVirtualSet(UMLPackage.CONSTRAINT__OWNED_ELEMENT,
				ownedElement = new DerivedUnionEObjectEList(Element.class,
					this, UMLPackage.CONSTRAINT__OWNED_ELEMENT, new int[]{
						UMLPackage.CONSTRAINT__OWNED_COMMENT,
						UMLPackage.CONSTRAINT__NAME_EXPRESSION,
						UMLPackage.CONSTRAINT__SPECIFICATION}));
		}
		return ownedElement;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public EList getConstrainedElements() {
		EList constrainedElement = (EList) eVirtualGet(UMLPackage.CONSTRAINT__CONSTRAINED_ELEMENT);
		if (constrainedElement == null) {
			eVirtualSet(UMLPackage.CONSTRAINT__CONSTRAINED_ELEMENT,
				constrainedElement = new EObjectResolvingEList(Element.class,
					this, UMLPackage.CONSTRAINT__CONSTRAINED_ELEMENT));
		}
		return constrainedElement;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public ValueSpecification getSpecification() {
		ValueSpecification specification = (ValueSpecification) eVirtualGet(UMLPackage.CONSTRAINT__SPECIFICATION);
		if (specification != null && specification.eIsProxy()) {
			InternalEObject oldSpecification = (InternalEObject) specification;
			specification = (ValueSpecification) eResolveProxy(oldSpecification);
			if (specification != oldSpecification) {
				InternalEObject newSpecification = (InternalEObject) specification;
				NotificationChain msgs = oldSpecification.eInverseRemove(this,
					EOPPOSITE_FEATURE_BASE
						- UMLPackage.CONSTRAINT__SPECIFICATION, null, null);
				if (newSpecification.eInternalContainer() == null) {
					msgs = newSpecification.eInverseAdd(this,
						EOPPOSITE_FEATURE_BASE
							- UMLPackage.CONSTRAINT__SPECIFICATION, null, msgs);
				}
				if (msgs != null)
					msgs.dispatch();
				if (eNotificationRequired())
					eNotify(new ENotificationImpl(this, Notification.RESOLVE,
						UMLPackage.CONSTRAINT__SPECIFICATION, oldSpecification,
						specification));
			}
		}
		return specification;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public ValueSpecification basicGetSpecification() {
		return (ValueSpecification) eVirtualGet(UMLPackage.CONSTRAINT__SPECIFICATION);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public NotificationChain basicSetSpecification(
			ValueSpecification newSpecification, NotificationChain msgs) {
		Object oldSpecification = eVirtualSet(
			UMLPackage.CONSTRAINT__SPECIFICATION, newSpecification);
		if (eNotificationRequired()) {
			ENotificationImpl notification = new ENotificationImpl(this,
				Notification.SET, UMLPackage.CONSTRAINT__SPECIFICATION,
				oldSpecification == EVIRTUAL_NO_VALUE
					? null
					: oldSpecification, newSpecification);
			if (msgs == null)
				msgs = notification;
			else
				msgs.add(notification);
		}

		return msgs;
	}

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

	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public ValueSpecification createSpecification(String name, Type type,
			EClass eClass) {
		ValueSpecification newSpecification = (ValueSpecification) EcoreUtil
			.create(eClass);
		if (name != null)
			newSpecification.setName(name);
		if (type != null)
			newSpecification.setType(type);
		setSpecification(newSpecification);
		return newSpecification;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public Namespace getContext() {
		if (eContainerFeatureID != UMLPackage.CONSTRAINT__CONTEXT)
			return null;
		return (Namespace) eContainer();
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public NotificationChain basicSetContext(Namespace newContext,
			NotificationChain msgs) {
		msgs = eBasicSetContainer((InternalEObject) newContext,
			UMLPackage.CONSTRAINT__CONTEXT, msgs);

		return msgs;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void setContext(Namespace newContext) {
		if (newContext != eInternalContainer()
			|| (eContainerFeatureID != UMLPackage.CONSTRAINT__CONTEXT && newContext != null)) {
			if (EcoreUtil.isAncestor(this, newContext))
				throw new IllegalArgumentException(
					"Recursive containment not allowed for " + toString()); //$NON-NLS-1$
			NotificationChain msgs = null;
			if (eInternalContainer() != null)
				msgs = eBasicRemoveFromContainer(msgs);
			if (newContext != null)
				msgs = ((InternalEObject) newContext).eInverseAdd(this,
					UMLPackage.NAMESPACE__OWNED_RULE, Namespace.class, msgs);
			msgs = basicSetContext(newContext, msgs);
			if (msgs != null)
				msgs.dispatch();
		} else if (eNotificationRequired())
			eNotify(new ENotificationImpl(this, Notification.SET,
				UMLPackage.CONSTRAINT__CONTEXT, newContext, newContext));

	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public boolean validateNotApplyToSelf(DiagnosticChain diagnostics,
			Map context) {
		return ConstraintOperations.validateNotApplyToSelf(this, diagnostics,
			context);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public boolean validateValueSpecificationBoolean(
			DiagnosticChain diagnostics, Map context) {
		return ConstraintOperations.validateValueSpecificationBoolean(this,
			diagnostics, context);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public boolean validateBooleanValue(DiagnosticChain diagnostics, Map context) {
		return ConstraintOperations.validateBooleanValue(this, diagnostics,
			context);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public boolean validateNoSideEffects(DiagnosticChain diagnostics,
			Map context) {
		return ConstraintOperations.validateNoSideEffects(this, diagnostics,
			context);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public boolean validateNotAppliedToSelf(DiagnosticChain diagnostics,
			Map context) {
		return ConstraintOperations.validateNotAppliedToSelf(this, diagnostics,
			context);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public NotificationChain eInverseAdd(InternalEObject otherEnd,
			int featureID, NotificationChain msgs) {
		switch (featureID) {
			case UMLPackage.CONSTRAINT__EANNOTATIONS :
				return ((InternalEList) getEAnnotations()).basicAdd(otherEnd,
					msgs);
			case UMLPackage.CONSTRAINT__CLIENT_DEPENDENCY :
				return ((InternalEList) getClientDependencies()).basicAdd(
					otherEnd, msgs);
			case UMLPackage.CONSTRAINT__OWNING_TEMPLATE_PARAMETER :
				if (eInternalContainer() != null)
					msgs = eBasicRemoveFromContainer(msgs);
				return basicSetOwningTemplateParameter(
					(TemplateParameter) otherEnd, msgs);
			case UMLPackage.CONSTRAINT__TEMPLATE_PARAMETER :
				TemplateParameter templateParameter = (TemplateParameter) eVirtualGet(UMLPackage.CONSTRAINT__TEMPLATE_PARAMETER);
				if (templateParameter != null)
					msgs = ((InternalEObject) templateParameter)
						.eInverseRemove(this,
							UMLPackage.TEMPLATE_PARAMETER__PARAMETERED_ELEMENT,
							TemplateParameter.class, msgs);
				return basicSetTemplateParameter((TemplateParameter) otherEnd,
					msgs);
			case UMLPackage.CONSTRAINT__CONTEXT :
				if (eInternalContainer() != null)
					msgs = eBasicRemoveFromContainer(msgs);
				return basicSetContext((Namespace) 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.CONSTRAINT__EANNOTATIONS :
				return ((InternalEList) getEAnnotations()).basicRemove(
					otherEnd, msgs);
			case UMLPackage.CONSTRAINT__OWNED_COMMENT :
				return ((InternalEList) getOwnedComments()).basicRemove(
					otherEnd, msgs);
			case UMLPackage.CONSTRAINT__CLIENT_DEPENDENCY :
				return ((InternalEList) getClientDependencies()).basicRemove(
					otherEnd, msgs);
			case UMLPackage.CONSTRAINT__NAME_EXPRESSION :
				return basicSetNameExpression(null, msgs);
			case UMLPackage.CONSTRAINT__OWNING_TEMPLATE_PARAMETER :
				return basicSetOwningTemplateParameter(null, msgs);
			case UMLPackage.CONSTRAINT__TEMPLATE_PARAMETER :
				return basicSetTemplateParameter(null, msgs);
			case UMLPackage.CONSTRAINT__SPECIFICATION :
				return basicSetSpecification(null, msgs);
			case UMLPackage.CONSTRAINT__CONTEXT :
				return basicSetContext(null, msgs);
		}
		return eDynamicInverseRemove(otherEnd, featureID, msgs);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public NotificationChain eBasicRemoveFromContainerFeature(
			NotificationChain msgs) {
		switch (eContainerFeatureID) {
			case UMLPackage.CONSTRAINT__OWNING_TEMPLATE_PARAMETER :
				return eInternalContainer().eInverseRemove(this,
					UMLPackage.TEMPLATE_PARAMETER__OWNED_PARAMETERED_ELEMENT,
					TemplateParameter.class, msgs);
			case UMLPackage.CONSTRAINT__CONTEXT :
				return eInternalContainer().eInverseRemove(this,
					UMLPackage.NAMESPACE__OWNED_RULE, Namespace.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.CONSTRAINT__EANNOTATIONS :
				return getEAnnotations();
			case UMLPackage.CONSTRAINT__OWNED_ELEMENT :
				return getOwnedElements();
			case UMLPackage.CONSTRAINT__OWNER :
				if (resolve)
					return getOwner();
				return basicGetOwner();
			case UMLPackage.CONSTRAINT__OWNED_COMMENT :
				return getOwnedComments();
			case UMLPackage.CONSTRAINT__NAME :
				return getName();
			case UMLPackage.CONSTRAINT__VISIBILITY :
				return getVisibility();
			case UMLPackage.CONSTRAINT__QUALIFIED_NAME :
				return getQualifiedName();
			case UMLPackage.CONSTRAINT__CLIENT_DEPENDENCY :
				return getClientDependencies();
			case UMLPackage.CONSTRAINT__NAMESPACE :
				if (resolve)
					return getNamespace();
				return basicGetNamespace();
			case UMLPackage.CONSTRAINT__NAME_EXPRESSION :
				if (resolve)
					return getNameExpression();
				return basicGetNameExpression();
			case UMLPackage.CONSTRAINT__OWNING_TEMPLATE_PARAMETER :
				if (resolve)
					return getOwningTemplateParameter();
				return basicGetOwningTemplateParameter();
			case UMLPackage.CONSTRAINT__TEMPLATE_PARAMETER :
				if (resolve)
					return getTemplateParameter();
				return basicGetTemplateParameter();
			case UMLPackage.CONSTRAINT__CONSTRAINED_ELEMENT :
				return getConstrainedElements();
			case UMLPackage.CONSTRAINT__SPECIFICATION :
				if (resolve)
					return getSpecification();
				return basicGetSpecification();
			case UMLPackage.CONSTRAINT__CONTEXT :
				return getContext();
		}
		return eDynamicGet(featureID, resolve, coreType);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void eSet(int featureID, Object newValue) {
		switch (featureID) {
			case UMLPackage.CONSTRAINT__EANNOTATIONS :
				getEAnnotations().clear();
				getEAnnotations().addAll((Collection) newValue);
				return;
			case UMLPackage.CONSTRAINT__OWNED_COMMENT :
				getOwnedComments().clear();
				getOwnedComments().addAll((Collection) newValue);
				return;
			case UMLPackage.CONSTRAINT__NAME :
				setName((String) newValue);
				return;
			case UMLPackage.CONSTRAINT__VISIBILITY :
				setVisibility((VisibilityKind) newValue);
				return;
			case UMLPackage.CONSTRAINT__CLIENT_DEPENDENCY :
				getClientDependencies().clear();
				getClientDependencies().addAll((Collection) newValue);
				return;
			case UMLPackage.CONSTRAINT__NAME_EXPRESSION :
				setNameExpression((StringExpression) newValue);
				return;
			case UMLPackage.CONSTRAINT__OWNING_TEMPLATE_PARAMETER :
				setOwningTemplateParameter((TemplateParameter) newValue);
				return;
			case UMLPackage.CONSTRAINT__TEMPLATE_PARAMETER :
				setTemplateParameter((TemplateParameter) newValue);
				return;
			case UMLPackage.CONSTRAINT__CONSTRAINED_ELEMENT :
				getConstrainedElements().clear();
				getConstrainedElements().addAll((Collection) newValue);
				return;
			case UMLPackage.CONSTRAINT__SPECIFICATION :
				setSpecification((ValueSpecification) newValue);
				return;
			case UMLPackage.CONSTRAINT__CONTEXT :
				setContext((Namespace) newValue);
				return;
		}
		eDynamicSet(featureID, newValue);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void eUnset(int featureID) {
		switch (featureID) {
			case UMLPackage.CONSTRAINT__EANNOTATIONS :
				getEAnnotations().clear();
				return;
			case UMLPackage.CONSTRAINT__OWNED_COMMENT :
				getOwnedComments().clear();
				return;
			case UMLPackage.CONSTRAINT__NAME :
				unsetName();
				return;
			case UMLPackage.CONSTRAINT__VISIBILITY :
				unsetVisibility();
				return;
			case UMLPackage.CONSTRAINT__CLIENT_DEPENDENCY :
				getClientDependencies().clear();
				return;
			case UMLPackage.CONSTRAINT__NAME_EXPRESSION :
				setNameExpression((StringExpression) null);
				return;
			case UMLPackage.CONSTRAINT__OWNING_TEMPLATE_PARAMETER :
				setOwningTemplateParameter((TemplateParameter) null);
				return;
			case UMLPackage.CONSTRAINT__TEMPLATE_PARAMETER :
				setTemplateParameter((TemplateParameter) null);
				return;
			case UMLPackage.CONSTRAINT__CONSTRAINED_ELEMENT :
				getConstrainedElements().clear();
				return;
			case UMLPackage.CONSTRAINT__SPECIFICATION :
				setSpecification((ValueSpecification) null);
				return;
			case UMLPackage.CONSTRAINT__CONTEXT :
				setContext((Namespace) null);
				return;
		}
		eDynamicUnset(featureID);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public boolean eIsSet(int featureID) {
		switch (featureID) {
			case UMLPackage.CONSTRAINT__EANNOTATIONS :
				EList eAnnotations = (EList) eVirtualGet(UMLPackage.CONSTRAINT__EANNOTATIONS);
				return eAnnotations != null && !eAnnotations.isEmpty();
			case UMLPackage.CONSTRAINT__OWNED_ELEMENT :
				return isSetOwnedElements();
			case UMLPackage.CONSTRAINT__OWNER :
				return isSetOwner();
			case UMLPackage.CONSTRAINT__OWNED_COMMENT :
				EList ownedComment = (EList) eVirtualGet(UMLPackage.CONSTRAINT__OWNED_COMMENT);
				return ownedComment != null && !ownedComment.isEmpty();
			case UMLPackage.CONSTRAINT__NAME :
				return isSetName();
			case UMLPackage.CONSTRAINT__VISIBILITY :
				return isSetVisibility();
			case UMLPackage.CONSTRAINT__QUALIFIED_NAME :
				return QUALIFIED_NAME_EDEFAULT == null
					? getQualifiedName() != null
					: !QUALIFIED_NAME_EDEFAULT.equals(getQualifiedName());
			case UMLPackage.CONSTRAINT__CLIENT_DEPENDENCY :
				EList clientDependency = (EList) eVirtualGet(UMLPackage.CONSTRAINT__CLIENT_DEPENDENCY);
				return clientDependency != null && !clientDependency.isEmpty();
			case UMLPackage.CONSTRAINT__NAMESPACE :
				return isSetNamespace();
			case UMLPackage.CONSTRAINT__NAME_EXPRESSION :
				return eVirtualGet(UMLPackage.CONSTRAINT__NAME_EXPRESSION) != null;
			case UMLPackage.CONSTRAINT__OWNING_TEMPLATE_PARAMETER :
				return basicGetOwningTemplateParameter() != null;
			case UMLPackage.CONSTRAINT__TEMPLATE_PARAMETER :
				return eVirtualGet(UMLPackage.CONSTRAINT__TEMPLATE_PARAMETER) != null;
			case UMLPackage.CONSTRAINT__CONSTRAINED_ELEMENT :
				EList constrainedElement = (EList) eVirtualGet(UMLPackage.CONSTRAINT__CONSTRAINED_ELEMENT);
				return constrainedElement != null
					&& !constrainedElement.isEmpty();
			case UMLPackage.CONSTRAINT__SPECIFICATION :
				return eVirtualGet(UMLPackage.CONSTRAINT__SPECIFICATION) != null;
			case UMLPackage.CONSTRAINT__CONTEXT :
				return getContext() != null;
		}
		return eDynamicIsSet(featureID);
	}

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

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public Namespace basicGetNamespace() {
		Namespace context = getContext();
		if (context != null) {
			return context;
		}
		return super.basicGetNamespace();
	}

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

} //ConstraintImpl