/*******************************************************************************
 * Copyright (c) 2009, 2011 SAP AG 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:
 *     SAP AG - initial API and implementation
 ******************************************************************************
 * $Id: WithArgumentImpl.java,v 1.2 2011/03/05 21:52:04 auhl Exp $
 */
package dataaccess.expressions.impl;

import dataaccess.expressions.Expression;
import dataaccess.expressions.ExpressionsPackage;
import dataaccess.expressions.WithArgument;

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

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

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

/**
 * <!-- begin-user-doc -->
 * An implementation of the model object '<em><b>With Argument</b></em>'.
 * <!-- end-user-doc -->
 * <p>
 * The following features are implemented:
 * <ul>
 *   <li>{@link dataaccess.expressions.impl.WithArgumentImpl#getArgument <em>Argument</em>}</li>
 * </ul>
 * </p>
 *
 * @generated
 */
public abstract class WithArgumentImpl extends EObjectImpl implements WithArgument {
	/**
	 * The cached value of the '{@link #getArgument() <em>Argument</em>}' containment reference.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getArgument()
	 * @generated
	 * @ordered
	 */
	protected Expression argument;

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

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

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public Expression getArgument() {
		if (argument != null && argument.eIsProxy()) {
			InternalEObject oldArgument = (InternalEObject)argument;
			argument = (Expression)eResolveProxy(oldArgument);
			if (argument != oldArgument) {
				InternalEObject newArgument = (InternalEObject)argument;
				NotificationChain msgs =  oldArgument.eInverseRemove(this, ExpressionsPackage.EXPRESSION__ARGUMENT_OF, Expression.class, null);
				if (newArgument.eInternalContainer() == null) {
					msgs =  newArgument.eInverseAdd(this, ExpressionsPackage.EXPRESSION__ARGUMENT_OF, Expression.class, msgs);
				}
				if (msgs != null) msgs.dispatch();
				if (eNotificationRequired())
					eNotify(new ENotificationImpl(this, Notification.RESOLVE, ExpressionsPackage.WITH_ARGUMENT__ARGUMENT, oldArgument, argument));
			}
		}
		return argument;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public Expression basicGetArgument() {
		return argument;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public NotificationChain basicSetArgument(Expression newArgument, NotificationChain msgs) {
		Expression oldArgument = argument;
		argument = newArgument;
		if (eNotificationRequired()) {
			ENotificationImpl notification = new ENotificationImpl(this, Notification.SET, ExpressionsPackage.WITH_ARGUMENT__ARGUMENT, oldArgument, newArgument);
			if (msgs == null) msgs = notification; else msgs.add(notification);
		}
		return msgs;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void setArgument(Expression newArgument) {
		if (newArgument != argument) {
			NotificationChain msgs = null;
			if (argument != null)
				msgs = ((InternalEObject)argument).eInverseRemove(this, ExpressionsPackage.EXPRESSION__ARGUMENT_OF, Expression.class, msgs);
			if (newArgument != null)
				msgs = ((InternalEObject)newArgument).eInverseAdd(this, ExpressionsPackage.EXPRESSION__ARGUMENT_OF, Expression.class, msgs);
			msgs = basicSetArgument(newArgument, msgs);
			if (msgs != null) msgs.dispatch();
		}
		else if (eNotificationRequired())
			eNotify(new ENotificationImpl(this, Notification.SET, ExpressionsPackage.WITH_ARGUMENT__ARGUMENT, newArgument, newArgument));
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public NotificationChain eInverseAdd(InternalEObject otherEnd, int featureID, NotificationChain msgs) {
		switch (featureID) {
			case ExpressionsPackage.WITH_ARGUMENT__ARGUMENT:
				if (argument != null)
					msgs = ((InternalEObject)argument).eInverseRemove(this, EOPPOSITE_FEATURE_BASE - ExpressionsPackage.WITH_ARGUMENT__ARGUMENT, null, msgs);
				return basicSetArgument((Expression)otherEnd, msgs);
		}
		return super.eInverseAdd(otherEnd, featureID, msgs);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public NotificationChain eInverseRemove(InternalEObject otherEnd, int featureID, NotificationChain msgs) {
		switch (featureID) {
			case ExpressionsPackage.WITH_ARGUMENT__ARGUMENT:
				return basicSetArgument(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 ExpressionsPackage.WITH_ARGUMENT__ARGUMENT:
				if (resolve) return getArgument();
				return basicGetArgument();
		}
		return super.eGet(featureID, resolve, coreType);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public void eSet(int featureID, Object newValue) {
		switch (featureID) {
			case ExpressionsPackage.WITH_ARGUMENT__ARGUMENT:
				setArgument((Expression)newValue);
				return;
		}
		super.eSet(featureID, newValue);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public void eUnset(int featureID) {
		switch (featureID) {
			case ExpressionsPackage.WITH_ARGUMENT__ARGUMENT:
				setArgument((Expression)null);
				return;
		}
		super.eUnset(featureID);
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public boolean eIsSet(int featureID) {
		switch (featureID) {
			case ExpressionsPackage.WITH_ARGUMENT__ARGUMENT:
				return argument != null;
		}
		return super.eIsSet(featureID);
	}

} //WithArgumentImpl