/*******************************************************************************
 * 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: BindingImpl.java,v 1.2 2011/03/05 21:52:05 auhl Exp $
 */
package integration.binding.impl;

import dataaccess.expressions.Expression;

import integration.binding.Binding;
import integration.binding.BindingPackage;

import modelmanagement.impl.NamedElementImpl;

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;

/**
 * <!-- begin-user-doc -->
 * An implementation of the model object '<em><b>Binding</b></em>'.
 * <!-- end-user-doc -->
 * <p>
 * The following features are implemented:
 * <ul>
 *   <li>{@link integration.binding.impl.BindingImpl#getFunction <em>Function</em>}</li>
 * </ul>
 * </p>
 *
 * @generated
 */
public abstract class BindingImpl extends NamedElementImpl implements Binding {
	/**
	 * The cached value of the '{@link #getFunction() <em>Function</em>}' containment reference.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @see #getFunction()
	 * @generated
	 * @ordered
	 */
	protected Expression function;

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

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

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public Expression getFunction() {
		if (function != null && function.eIsProxy()) {
			InternalEObject oldFunction = (InternalEObject)function;
			function = (Expression)eResolveProxy(oldFunction);
			if (function != oldFunction) {
				InternalEObject newFunction = (InternalEObject)function;
				NotificationChain msgs = oldFunction.eInverseRemove(this, EOPPOSITE_FEATURE_BASE - BindingPackage.BINDING__FUNCTION, null, null);
				if (newFunction.eInternalContainer() == null) {
					msgs = newFunction.eInverseAdd(this, EOPPOSITE_FEATURE_BASE - BindingPackage.BINDING__FUNCTION, null, msgs);
				}
				if (msgs != null) msgs.dispatch();
				if (eNotificationRequired())
					eNotify(new ENotificationImpl(this, Notification.RESOLVE, BindingPackage.BINDING__FUNCTION, oldFunction, function));
			}
		}
		return function;
	}

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

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public NotificationChain basicSetFunction(Expression newFunction, NotificationChain msgs) {
		Expression oldFunction = function;
		function = newFunction;
		if (eNotificationRequired()) {
			ENotificationImpl notification = new ENotificationImpl(this, Notification.SET, BindingPackage.BINDING__FUNCTION, oldFunction, newFunction);
			if (msgs == null) msgs = notification; else msgs.add(notification);
		}
		return msgs;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public void setFunction(Expression newFunction) {
		if (newFunction != function) {
			NotificationChain msgs = null;
			if (function != null)
				msgs = ((InternalEObject)function).eInverseRemove(this, EOPPOSITE_FEATURE_BASE - BindingPackage.BINDING__FUNCTION, null, msgs);
			if (newFunction != null)
				msgs = ((InternalEObject)newFunction).eInverseAdd(this, EOPPOSITE_FEATURE_BASE - BindingPackage.BINDING__FUNCTION, null, msgs);
			msgs = basicSetFunction(newFunction, msgs);
			if (msgs != null) msgs.dispatch();
		}
		else if (eNotificationRequired())
			eNotify(new ENotificationImpl(this, Notification.SET, BindingPackage.BINDING__FUNCTION, newFunction, newFunction));
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public NotificationChain eInverseRemove(InternalEObject otherEnd, int featureID, NotificationChain msgs) {
		switch (featureID) {
			case BindingPackage.BINDING__FUNCTION:
				return basicSetFunction(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 BindingPackage.BINDING__FUNCTION:
				if (resolve) return getFunction();
				return basicGetFunction();
		}
		return super.eGet(featureID, resolve, coreType);
	}

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

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

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

} //BindingImpl