/**
 * <copyright>
 * </copyright>
 *
 * $Id$
 */
package dataaccess.expressions.collectionexpressions.impl;

import behavioral.actions.ActionsPackage;
import behavioral.actions.Constant;
import behavioral.actions.Iterator;

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

import dataaccess.expressions.collectionexpressions.CollectionexpressionsPackage;
import dataaccess.expressions.collectionexpressions.Iterate;

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.InternalEObject;

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

import org.eclipse.emf.ecore.util.EObjectContainmentWithInverseEList;
import org.eclipse.emf.ecore.util.InternalEList;

/**
 * <!-- begin-user-doc -->
 * An implementation of the model object '<em><b>Iterate</b></em>'.
 * <!-- end-user-doc -->
 * <p>
 * The following features are implemented:
 * <ul>
 *   <li>{@link dataaccess.expressions.collectionexpressions.impl.IterateImpl#getIterators <em>Iterators</em>}</li>
 *   <li>{@link dataaccess.expressions.collectionexpressions.impl.IterateImpl#getAccumulator <em>Accumulator</em>}</li>
 *   <li>{@link dataaccess.expressions.collectionexpressions.impl.IterateImpl#getIteratorExpression <em>Iterator Expression</em>}</li>
 * </ul>
 * </p>
 *
 * @generated
 */
public class IterateImpl extends CollectionExpressionImpl implements Iterate {
	/**
     * The cached value of the '{@link #getIterators() <em>Iterators</em>}' containment reference list.
     * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
     * @see #getIterators()
     * @generated
     * @ordered
     */
	protected EList<Iterator> iterators;

	/**
     * The cached value of the '{@link #getAccumulator() <em>Accumulator</em>}' containment reference.
     * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
     * @see #getAccumulator()
     * @generated
     * @ordered
     */
	protected Constant accumulator;

	/**
     * The cached value of the '{@link #getIteratorExpression() <em>Iterator Expression</em>}' containment reference.
     * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
     * @see #getIteratorExpression()
     * @generated
     * @ordered
     */
	protected Expression iteratorExpression;

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

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

	/**
     * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
     * @generated
     */
	public EList<Iterator> getIterators() {
        if (iterators == null) {
            iterators = new EObjectContainmentWithInverseEList.Resolving<Iterator>(Iterator.class, this, CollectionexpressionsPackage.ITERATE__ITERATORS, ActionsPackage.ITERATOR__ITERATE);
        }
        return iterators;
    }

	/**
     * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
     * @generated
     */
	public Constant getAccumulator() {
        if (accumulator != null && accumulator.eIsProxy()) {
            InternalEObject oldAccumulator = (InternalEObject)accumulator;
            accumulator = (Constant)eResolveProxy(oldAccumulator);
            if (accumulator != oldAccumulator) {
                InternalEObject newAccumulator = (InternalEObject)accumulator;
                NotificationChain msgs =  oldAccumulator.eInverseRemove(this, ActionsPackage.CONSTANT__ITERATE, Constant.class, null);
                if (newAccumulator.eInternalContainer() == null) {
                    msgs =  newAccumulator.eInverseAdd(this, ActionsPackage.CONSTANT__ITERATE, Constant.class, msgs);
                }
                if (msgs != null) msgs.dispatch();
                if (eNotificationRequired())
                    eNotify(new ENotificationImpl(this, Notification.RESOLVE, CollectionexpressionsPackage.ITERATE__ACCUMULATOR, oldAccumulator, accumulator));
            }
        }
        return accumulator;
    }

	/**
     * <!-- begin-user-doc -->
     * <!-- end-user-doc -->
     * @generated
     */
    public Constant basicGetAccumulator() {
        return accumulator;
    }

    /**
     * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
     * @generated
     */
	public NotificationChain basicSetAccumulator(Constant newAccumulator, NotificationChain msgs) {
        Constant oldAccumulator = accumulator;
        accumulator = newAccumulator;
        if (eNotificationRequired()) {
            ENotificationImpl notification = new ENotificationImpl(this, Notification.SET, CollectionexpressionsPackage.ITERATE__ACCUMULATOR, oldAccumulator, newAccumulator);
            if (msgs == null) msgs = notification; else msgs.add(notification);
        }
        return msgs;
    }

	/**
     * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
     * @generated
     */
	public void setAccumulator(Constant newAccumulator) {
        if (newAccumulator != accumulator) {
            NotificationChain msgs = null;
            if (accumulator != null)
                msgs = ((InternalEObject)accumulator).eInverseRemove(this, ActionsPackage.CONSTANT__ITERATE, Constant.class, msgs);
            if (newAccumulator != null)
                msgs = ((InternalEObject)newAccumulator).eInverseAdd(this, ActionsPackage.CONSTANT__ITERATE, Constant.class, msgs);
            msgs = basicSetAccumulator(newAccumulator, msgs);
            if (msgs != null) msgs.dispatch();
        }
        else if (eNotificationRequired())
            eNotify(new ENotificationImpl(this, Notification.SET, CollectionexpressionsPackage.ITERATE__ACCUMULATOR, newAccumulator, newAccumulator));
    }

	/**
     * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
     * @generated
     */
	public Expression getIteratorExpression() {
        if (iteratorExpression != null && iteratorExpression.eIsProxy()) {
            InternalEObject oldIteratorExpression = (InternalEObject)iteratorExpression;
            iteratorExpression = (Expression)eResolveProxy(oldIteratorExpression);
            if (iteratorExpression != oldIteratorExpression) {
                InternalEObject newIteratorExpression = (InternalEObject)iteratorExpression;
                NotificationChain msgs =  oldIteratorExpression.eInverseRemove(this, ExpressionsPackage.EXPRESSION__IN_ITERATOR, Expression.class, null);
                if (newIteratorExpression.eInternalContainer() == null) {
                    msgs =  newIteratorExpression.eInverseAdd(this, ExpressionsPackage.EXPRESSION__IN_ITERATOR, Expression.class, msgs);
                }
                if (msgs != null) msgs.dispatch();
                if (eNotificationRequired())
                    eNotify(new ENotificationImpl(this, Notification.RESOLVE, CollectionexpressionsPackage.ITERATE__ITERATOR_EXPRESSION, oldIteratorExpression, iteratorExpression));
            }
        }
        return iteratorExpression;
    }

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

    /**
     * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
     * @generated
     */
	public NotificationChain basicSetIteratorExpression(Expression newIteratorExpression, NotificationChain msgs) {
        Expression oldIteratorExpression = iteratorExpression;
        iteratorExpression = newIteratorExpression;
        if (eNotificationRequired()) {
            ENotificationImpl notification = new ENotificationImpl(this, Notification.SET, CollectionexpressionsPackage.ITERATE__ITERATOR_EXPRESSION, oldIteratorExpression, newIteratorExpression);
            if (msgs == null) msgs = notification; else msgs.add(notification);
        }
        return msgs;
    }

	/**
     * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
     * @generated
     */
	public void setIteratorExpression(Expression newIteratorExpression) {
        if (newIteratorExpression != iteratorExpression) {
            NotificationChain msgs = null;
            if (iteratorExpression != null)
                msgs = ((InternalEObject)iteratorExpression).eInverseRemove(this, ExpressionsPackage.EXPRESSION__IN_ITERATOR, Expression.class, msgs);
            if (newIteratorExpression != null)
                msgs = ((InternalEObject)newIteratorExpression).eInverseAdd(this, ExpressionsPackage.EXPRESSION__IN_ITERATOR, Expression.class, msgs);
            msgs = basicSetIteratorExpression(newIteratorExpression, msgs);
            if (msgs != null) msgs.dispatch();
        }
        else if (eNotificationRequired())
            eNotify(new ENotificationImpl(this, Notification.SET, CollectionexpressionsPackage.ITERATE__ITERATOR_EXPRESSION, newIteratorExpression, newIteratorExpression));
    }

	/**
     * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
     * @generated
     */
	@SuppressWarnings("unchecked")
	@Override
	public NotificationChain eInverseAdd(InternalEObject otherEnd, int featureID, NotificationChain msgs) {
        switch (featureID) {
            case CollectionexpressionsPackage.ITERATE__ITERATORS:
                return ((InternalEList<InternalEObject>)(InternalEList<?>)getIterators()).basicAdd(otherEnd, msgs);
            case CollectionexpressionsPackage.ITERATE__ACCUMULATOR:
                if (accumulator != null)
                    msgs = ((InternalEObject)accumulator).eInverseRemove(this, EOPPOSITE_FEATURE_BASE - CollectionexpressionsPackage.ITERATE__ACCUMULATOR, null, msgs);
                return basicSetAccumulator((Constant)otherEnd, msgs);
            case CollectionexpressionsPackage.ITERATE__ITERATOR_EXPRESSION:
                if (iteratorExpression != null)
                    msgs = ((InternalEObject)iteratorExpression).eInverseRemove(this, EOPPOSITE_FEATURE_BASE - CollectionexpressionsPackage.ITERATE__ITERATOR_EXPRESSION, null, msgs);
                return basicSetIteratorExpression((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 CollectionexpressionsPackage.ITERATE__ITERATORS:
                return ((InternalEList<?>)getIterators()).basicRemove(otherEnd, msgs);
            case CollectionexpressionsPackage.ITERATE__ACCUMULATOR:
                return basicSetAccumulator(null, msgs);
            case CollectionexpressionsPackage.ITERATE__ITERATOR_EXPRESSION:
                return basicSetIteratorExpression(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 CollectionexpressionsPackage.ITERATE__ITERATORS:
                return getIterators();
            case CollectionexpressionsPackage.ITERATE__ACCUMULATOR:
                if (resolve) return getAccumulator();
                return basicGetAccumulator();
            case CollectionexpressionsPackage.ITERATE__ITERATOR_EXPRESSION:
                if (resolve) return getIteratorExpression();
                return basicGetIteratorExpression();
        }
        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 CollectionexpressionsPackage.ITERATE__ITERATORS:
                getIterators().clear();
                getIterators().addAll((Collection<? extends Iterator>)newValue);
                return;
            case CollectionexpressionsPackage.ITERATE__ACCUMULATOR:
                setAccumulator((Constant)newValue);
                return;
            case CollectionexpressionsPackage.ITERATE__ITERATOR_EXPRESSION:
                setIteratorExpression((Expression)newValue);
                return;
        }
        super.eSet(featureID, newValue);
    }

	/**
     * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
     * @generated
     */
	@Override
	public void eUnset(int featureID) {
        switch (featureID) {
            case CollectionexpressionsPackage.ITERATE__ITERATORS:
                getIterators().clear();
                return;
            case CollectionexpressionsPackage.ITERATE__ACCUMULATOR:
                setAccumulator((Constant)null);
                return;
            case CollectionexpressionsPackage.ITERATE__ITERATOR_EXPRESSION:
                setIteratorExpression((Expression)null);
                return;
        }
        super.eUnset(featureID);
    }

	/**
     * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
     * @generated
     */
	@Override
	public boolean eIsSet(int featureID) {
        switch (featureID) {
            case CollectionexpressionsPackage.ITERATE__ITERATORS:
                return iterators != null && !iterators.isEmpty();
            case CollectionexpressionsPackage.ITERATE__ACCUMULATOR:
                return accumulator != null;
            case CollectionexpressionsPackage.ITERATE__ITERATOR_EXPRESSION:
                return iteratorExpression != null;
        }
        return super.eIsSet(featureID);
    }

} //IterateImpl
