bundles/org.eclipse.emf.ecp.view.rule.model/src/org/eclipse/emf/ecp/view/spi/rule/model/impl/IterateConditionImpl.java - emfclient/org.eclipse.emf.ecp.core - Git at Google

 /**
  * Copyright (c) 2017 Christian W. Damus and others.
  *
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License 2.0
  * which accompanies this distribution, and is available at
  * https://www.eclipse.org/legal/epl-2.0/
  *
  * SPDX-License-Identifier: EPL-2.0
  *
  * Contributors:
  * Christian W. Damus - initial API and implementation
  */
 package org.eclipse.emf.ecp.view.spi.rule.model.impl;

 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;

 import org.eclipse.core.databinding.observable.Observables;
 import org.eclipse.core.databinding.observable.list.IObservableList;
 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.EObject;
 import org.eclipse.emf.ecore.EReference;
 import org.eclipse.emf.ecore.EStructuralFeature;
 import org.eclipse.emf.ecore.InternalEObject;
 import org.eclipse.emf.ecore.impl.ENotificationImpl;
 import org.eclipse.emf.ecp.view.spi.model.VDomainModelReference;
 import org.eclipse.emf.ecp.view.spi.rule.model.Activator;
 import org.eclipse.emf.ecp.view.spi.rule.model.Condition;
 import org.eclipse.emf.ecp.view.spi.rule.model.IterateCondition;
 import org.eclipse.emf.ecp.view.spi.rule.model.Quantifier;
 import org.eclipse.emf.ecp.view.spi.rule.model.RulePackage;
 import org.eclipse.emfforms.spi.core.services.databinding.DatabindingFailedException;

 /**
  * <!-- begin-user-doc -->
  * An implementation of the model object '<em><b>Iterate Condition</b></em>'.
  * <!-- end-user-doc -->
  * <p>
  * The following features are implemented:
  * </p>
  * <ul>
  * <li>{@link org.eclipse.emf.ecp.view.spi.rule.model.impl.IterateConditionImpl#getQuantifier <em>Quantifier</em>}</li>
  * <li>{@link org.eclipse.emf.ecp.view.spi.rule.model.impl.IterateConditionImpl#isIfEmpty <em>If Empty</em>}</li>
  * <li>{@link org.eclipse.emf.ecp.view.spi.rule.model.impl.IterateConditionImpl#getItemReference <em>Item
  * Reference</em>}</li>
  * <li>{@link org.eclipse.emf.ecp.view.spi.rule.model.impl.IterateConditionImpl#getItemCondition <em>Item
  * Condition</em>}</li>
  * </ul>
  *
  * @generated
  */
 public class IterateConditionImpl extends ConditionImpl implements IterateCondition {
 	/**
 	 * The default value of the '{@link #getQuantifier() <em>Quantifier</em>}' attribute.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 *
 	 * @see #getQuantifier()
 	 * @generated
 	 * @ordered
 	 */
 	protected static final Quantifier QUANTIFIER_EDEFAULT = Quantifier.ALL;

 	/**
 	 * The cached value of the '{@link #getQuantifier() <em>Quantifier</em>}' attribute.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 *
 	 * @see #getQuantifier()
 	 * @generated
 	 * @ordered
 	 */
 	protected Quantifier quantifier = QUANTIFIER_EDEFAULT;

 	/**
 	 * The default value of the '{@link #isIfEmpty() <em>If Empty</em>}' attribute.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 *
 	 * @see #isIfEmpty()
 	 * @generated
 	 * @ordered
 	 */
 	protected static final boolean IF_EMPTY_EDEFAULT = false;

 	/**
 	 * The cached value of the '{@link #isIfEmpty() <em>If Empty</em>}' attribute.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 *
 	 * @see #isIfEmpty()
 	 * @generated
 	 * @ordered
 	 */
 	protected boolean ifEmpty = IF_EMPTY_EDEFAULT;

 	/**
 	 * The cached value of the '{@link #getItemReference() <em>Item Reference</em>}' containment reference.
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 *
 	 * @see #getItemReference()
 	 * @generated
 	 * @ordered
 	 */
 	protected VDomainModelReference itemReference;

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

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

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

 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 *
 	 * @generated
 	 */
 	@Override
 	public Quantifier getQuantifier() {
 		return quantifier;
 	}

 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 *
 	 * @generated
 	 */
 	@Override
 	public void setQuantifier(Quantifier newQuantifier) {
 		final Quantifier oldQuantifier = quantifier;
 		quantifier = newQuantifier == null ? QUANTIFIER_EDEFAULT : newQuantifier;
 		if (eNotificationRequired()) {
 			eNotify(new ENotificationImpl(this, Notification.SET, RulePackage.ITERATE_CONDITION__QUANTIFIER,
 				oldQuantifier, quantifier));
 		}
 	}

 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 *
 	 * @generated
 	 */
 	@Override
 	public boolean isIfEmpty() {
 		return ifEmpty;
 	}

 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 *
 	 * @generated
 	 */
 	@Override
 	public void setIfEmpty(boolean newIfEmpty) {
 		final boolean oldIfEmpty = ifEmpty;
 		ifEmpty = newIfEmpty;
 		if (eNotificationRequired()) {
 			eNotify(new ENotificationImpl(this, Notification.SET, RulePackage.ITERATE_CONDITION__IF_EMPTY, oldIfEmpty,
 				ifEmpty));
 		}
 	}

 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 *
 	 * @generated
 	 */
 	@Override
 	public VDomainModelReference getItemReference() {
 		return itemReference;
 	}

 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 *
 	 * @generated
 	 */
 	public NotificationChain basicSetItemReference(VDomainModelReference newItemReference, NotificationChain msgs) {
 		final VDomainModelReference oldItemReference = itemReference;
 		itemReference = newItemReference;
 		if (eNotificationRequired()) {
 			final ENotificationImpl notification = new ENotificationImpl(this, Notification.SET,
 				RulePackage.ITERATE_CONDITION__ITEM_REFERENCE, oldItemReference, newItemReference);
 			if (msgs == null) {
 				msgs = notification;
 			} else {
 				msgs.add(notification);
 			}
 		}
 		return msgs;
 	}

 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 *
 	 * @generated
 	 */
 	@Override
 	public void setItemReference(VDomainModelReference newItemReference) {
 		if (newItemReference != itemReference) {
 			NotificationChain msgs = null;
 			if (itemReference != null) {
 				msgs = ((InternalEObject) itemReference).eInverseRemove(this,
 					EOPPOSITE_FEATURE_BASE - RulePackage.ITERATE_CONDITION__ITEM_REFERENCE, null, msgs);
 			}
 			if (newItemReference != null) {
 				msgs = ((InternalEObject) newItemReference).eInverseAdd(this,
 					EOPPOSITE_FEATURE_BASE - RulePackage.ITERATE_CONDITION__ITEM_REFERENCE, null, msgs);
 			}
 			msgs = basicSetItemReference(newItemReference, msgs);
 			if (msgs != null) {
 				msgs.dispatch();
 			}
 		} else if (eNotificationRequired()) {
 			eNotify(new ENotificationImpl(this, Notification.SET, RulePackage.ITERATE_CONDITION__ITEM_REFERENCE,
 				newItemReference, newItemReference));
 		}
 	}

 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 *
 	 * @generated
 	 */
 	@Override
 	public Condition getItemCondition() {
 		return itemCondition;
 	}

 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 *
 	 * @generated
 	 */
 	public NotificationChain basicSetItemCondition(Condition newItemCondition, NotificationChain msgs) {
 		final Condition oldItemCondition = itemCondition;
 		itemCondition = newItemCondition;
 		if (eNotificationRequired()) {
 			final ENotificationImpl notification = new ENotificationImpl(this, Notification.SET,
 				RulePackage.ITERATE_CONDITION__ITEM_CONDITION, oldItemCondition, newItemCondition);
 			if (msgs == null) {
 				msgs = notification;
 			} else {
 				msgs.add(notification);
 			}
 		}
 		return msgs;
 	}

 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 *
 	 * @generated
 	 */
 	@Override
 	public void setItemCondition(Condition newItemCondition) {
 		if (newItemCondition != itemCondition) {
 			NotificationChain msgs = null;
 			if (itemCondition != null) {
 				msgs = ((InternalEObject) itemCondition).eInverseRemove(this,
 					EOPPOSITE_FEATURE_BASE - RulePackage.ITERATE_CONDITION__ITEM_CONDITION, null, msgs);
 			}
 			if (newItemCondition != null) {
 				msgs = ((InternalEObject) newItemCondition).eInverseAdd(this,
 					EOPPOSITE_FEATURE_BASE - RulePackage.ITERATE_CONDITION__ITEM_CONDITION, null, msgs);
 			}
 			msgs = basicSetItemCondition(newItemCondition, msgs);
 			if (msgs != null) {
 				msgs.dispatch();
 			}
 		} else if (eNotificationRequired()) {
 			eNotify(new ENotificationImpl(this, Notification.SET, RulePackage.ITERATE_CONDITION__ITEM_CONDITION,
 				newItemCondition, newItemCondition));
 		}
 	}

 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 *
 	 * @generated
 	 */
 	@Override
 	public NotificationChain eInverseRemove(InternalEObject otherEnd, int featureID, NotificationChain msgs) {
 		switch (featureID) {
 		case RulePackage.ITERATE_CONDITION__ITEM_REFERENCE:
 			return basicSetItemReference(null, msgs);
 		case RulePackage.ITERATE_CONDITION__ITEM_CONDITION:
 			return basicSetItemCondition(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 RulePackage.ITERATE_CONDITION__QUANTIFIER:
 			return getQuantifier();
 		case RulePackage.ITERATE_CONDITION__IF_EMPTY:
 			return isIfEmpty();
 		case RulePackage.ITERATE_CONDITION__ITEM_REFERENCE:
 			return getItemReference();
 		case RulePackage.ITERATE_CONDITION__ITEM_CONDITION:
 			return getItemCondition();
 		}
 		return super.eGet(featureID, resolve, coreType);
 	}

 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 *
 	 * @generated
 	 */
 	@Override
 	public void eSet(int featureID, Object newValue) {
 		switch (featureID) {
 		case RulePackage.ITERATE_CONDITION__QUANTIFIER:
 			setQuantifier((Quantifier) newValue);
 			return;
 		case RulePackage.ITERATE_CONDITION__IF_EMPTY:
 			setIfEmpty((Boolean) newValue);
 			return;
 		case RulePackage.ITERATE_CONDITION__ITEM_REFERENCE:
 			setItemReference((VDomainModelReference) newValue);
 			return;
 		case RulePackage.ITERATE_CONDITION__ITEM_CONDITION:
 			setItemCondition((Condition) newValue);
 			return;
 		}
 		super.eSet(featureID, newValue);
 	}

 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 *
 	 * @generated
 	 */
 	@Override
 	public void eUnset(int featureID) {
 		switch (featureID) {
 		case RulePackage.ITERATE_CONDITION__QUANTIFIER:
 			setQuantifier(QUANTIFIER_EDEFAULT);
 			return;
 		case RulePackage.ITERATE_CONDITION__IF_EMPTY:
 			setIfEmpty(IF_EMPTY_EDEFAULT);
 			return;
 		case RulePackage.ITERATE_CONDITION__ITEM_REFERENCE:
 			setItemReference((VDomainModelReference) null);
 			return;
 		case RulePackage.ITERATE_CONDITION__ITEM_CONDITION:
 			setItemCondition((Condition) null);
 			return;
 		}
 		super.eUnset(featureID);
 	}

 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 *
 	 * @generated
 	 */
 	@Override
 	public boolean eIsSet(int featureID) {
 		switch (featureID) {
 		case RulePackage.ITERATE_CONDITION__QUANTIFIER:
 			return quantifier != QUANTIFIER_EDEFAULT;
 		case RulePackage.ITERATE_CONDITION__IF_EMPTY:
 			return ifEmpty != IF_EMPTY_EDEFAULT;
 		case RulePackage.ITERATE_CONDITION__ITEM_REFERENCE:
 			return itemReference != null;
 		case RulePackage.ITERATE_CONDITION__ITEM_CONDITION:
 			return itemCondition != null;
 		}
 		return super.eIsSet(featureID);
 	}

 	/**
 	 * <!-- begin-user-doc -->
 	 * <!-- end-user-doc -->
 	 *
 	 * @generated
 	 */
 	@Override
 	public String toString() {
 		if (eIsProxy()) {
 			return super.toString();
 		}

 		final StringBuffer result = new StringBuffer(super.toString());
 		result.append(" (quantifier: "); //$NON-NLS-1$
 		result.append(quantifier);
 		result.append(", ifEmpty: "); //$NON-NLS-1$
 		result.append(ifEmpty);
 		result.append(')');
 		return result.toString();
 	}

 	@Override
 	public boolean evaluate(EObject domainModel) {
 		final VDomainModelReference path = getItemReference();
 		final Collection<? extends EObject> subjects = get(domainModel, path);
 		return doEvaluate(subjects);
 	}

 	/**
 	 * Evaluates me by iteration of the given {@code subjects}.
 	 *
 	 * @param subjects the objects over which to iterate my {@link #getItemCondition() condition}
 	 * @return the result of the iteration
 	 */
 	protected boolean doEvaluate(Collection<? extends EObject> subjects) {
 		boolean result = isIfEmpty();

 		for (final EObject next : subjects) {
 			result = getItemCondition().evaluate(next);
 			if (!result && getQuantifier() == Quantifier.ALL) {
 				break; // Short-circuit
 			}
 			if (result && getQuantifier() == Quantifier.ANY) {
 				break; // Short-circuit
 			}
 		}

 		return result;
 	}

 	/**
 	 * Obtains the objects referenced by a domain-model reference, from the given
 	 * {@code owner} object.
 	 *
 	 * @param owner the owner of the reference
 	 * @param dmr the domain-model reference to follow
 	 *
 	 * @return the referenced objects
 	 */
 	List<? extends EObject> get(EObject owner, VDomainModelReference dmr) {
 		try {
 			@SuppressWarnings("unchecked")
 			IObservableList<? extends EObject> result = Activator.getDefault().getEMFFormsDatabinding()
 				.getObservableList(dmr, owner);

 			// We have to have EObjects, which means an EReference
 			if (result == null || !(result.getElementType() instanceof EReference)) {
 				result = Observables.emptyObservableList();
 			}
 			return result;
 		} catch (final DatabindingFailedException e) {
 			Activator.log(e);
 			return Collections.emptyList();
 		}
 	}

 	@Override
 	public boolean evaluateChangedValues(EObject domainModel,
 		Map<EStructuralFeature.Setting, Object> possibleNewValues) {

 		// First, partition the proposed changes into
 		// - changes to the set of objects that I iterate over (subjects)
 		// - changes to the features of my subjects
 		final List<Collection<? extends EObject>> proposedNewSubjects = new ArrayList<Collection<? extends EObject>>();
 		final Map<EStructuralFeature.Setting, Object> proposedChangesToSubjects = new HashMap<EStructuralFeature.Setting, Object>();

 		for (final Map.Entry<EStructuralFeature.Setting, Object> next : possibleNewValues.entrySet()) {
 			final EStructuralFeature.Setting setting = next.getKey();
 			final Object proposedValue = next.getValue();

 			if (setting.getEObject() == domainModel) {
 				// Changing the set of objects to iterate
 				@SuppressWarnings("unchecked")
 				final List<? extends EObject> newValues = (List<? extends EObject>) next.getValue();
 				proposedNewSubjects.add(newValues);
 			} else {
 				// Change features of an existing subject
 				proposedChangesToSubjects.put(setting, proposedValue);
 			}
 		}

 		// Now, evaluate the two partitions. Within each, evaluate the disjuction
 		// but between the partitions it's a conjuction
 		boolean result = true;
 		for (final Collection<? extends EObject> newValues : proposedNewSubjects) {
 			result = doEvaluate(newValues);
 			if (result) {
 				break;
 			}
 		}
 		if (result) {
 			for (final Map.Entry<EStructuralFeature.Setting, Object> next : proposedChangesToSubjects.entrySet()) {
 				final EStructuralFeature.Setting setting = next.getKey();
 				final Object proposedValue = next.getValue();

 				result = getItemCondition().evaluateChangedValues(setting.getEObject(),
 					Collections.singletonMap(setting, proposedValue));

 				if (!result && getQuantifier() == Quantifier.ALL) {
 					break; // Short-circuit
 				}
 				if (result && getQuantifier() == Quantifier.ANY) {
 					break; // Short-circuit
 				}
 			}
 		}

 		return result;
 	}

 } // IterateConditionImpl
	/**
	* Copyright (c) 2017 Christian W. Damus and others.
	*
	* All rights reserved. This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License 2.0
	* which accompanies this distribution, and is available at
	* https://www.eclipse.org/legal/epl-2.0/
	*
	* SPDX-License-Identifier: EPL-2.0
	*
	* Contributors:
	* Christian W. Damus - initial API and implementation
	*/
	package org.eclipse.emf.ecp.view.spi.rule.model.impl;

	import java.util.ArrayList;
	import java.util.Collection;
	import java.util.Collections;
	import java.util.HashMap;
	import java.util.List;
	import java.util.Map;

	import org.eclipse.core.databinding.observable.Observables;
	import org.eclipse.core.databinding.observable.list.IObservableList;
	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.EObject;
	import org.eclipse.emf.ecore.EReference;
	import org.eclipse.emf.ecore.EStructuralFeature;
	import org.eclipse.emf.ecore.InternalEObject;
	import org.eclipse.emf.ecore.impl.ENotificationImpl;
	import org.eclipse.emf.ecp.view.spi.model.VDomainModelReference;
	import org.eclipse.emf.ecp.view.spi.rule.model.Activator;
	import org.eclipse.emf.ecp.view.spi.rule.model.Condition;
	import org.eclipse.emf.ecp.view.spi.rule.model.IterateCondition;
	import org.eclipse.emf.ecp.view.spi.rule.model.Quantifier;
	import org.eclipse.emf.ecp.view.spi.rule.model.RulePackage;
	import org.eclipse.emfforms.spi.core.services.databinding.DatabindingFailedException;

	/**
	* <!-- begin-user-doc -->
	* An implementation of the model object '<em><b>Iterate Condition</b></em>'.
	* <!-- end-user-doc -->
	* <p>
	* The following features are implemented:
	* </p>
	* <ul>
	* <li>{@link org.eclipse.emf.ecp.view.spi.rule.model.impl.IterateConditionImpl#getQuantifier <em>Quantifier</em>}</li>
	* <li>{@link org.eclipse.emf.ecp.view.spi.rule.model.impl.IterateConditionImpl#isIfEmpty <em>If Empty</em>}</li>
	* <li>{@link org.eclipse.emf.ecp.view.spi.rule.model.impl.IterateConditionImpl#getItemReference <em>Item
	* Reference</em>}</li>
	* <li>{@link org.eclipse.emf.ecp.view.spi.rule.model.impl.IterateConditionImpl#getItemCondition <em>Item
	* Condition</em>}</li>
	* </ul>
	*
	* @generated
	*/
	public class IterateConditionImpl extends ConditionImpl implements IterateCondition {
	/**
	* The default value of the '{@link #getQuantifier() <em>Quantifier</em>}' attribute.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	*
	* @see #getQuantifier()
	* @generated
	* @ordered
	*/
	protected static final Quantifier QUANTIFIER_EDEFAULT = Quantifier.ALL;

	/**
	* The cached value of the '{@link #getQuantifier() <em>Quantifier</em>}' attribute.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	*
	* @see #getQuantifier()
	* @generated
	* @ordered
	*/
	protected Quantifier quantifier = QUANTIFIER_EDEFAULT;

	/**
	* The default value of the '{@link #isIfEmpty() <em>If Empty</em>}' attribute.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	*
	* @see #isIfEmpty()
	* @generated
	* @ordered
	*/
	protected static final boolean IF_EMPTY_EDEFAULT = false;

	/**
	* The cached value of the '{@link #isIfEmpty() <em>If Empty</em>}' attribute.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	*
	* @see #isIfEmpty()
	* @generated
	* @ordered
	*/
	protected boolean ifEmpty = IF_EMPTY_EDEFAULT;

	/**
	* The cached value of the '{@link #getItemReference() <em>Item Reference</em>}' containment reference.
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	*
	* @see #getItemReference()
	* @generated
	* @ordered
	*/
	protected VDomainModelReference itemReference;

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

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

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

	/**
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	*
	* @generated
	*/
	@Override
	public Quantifier getQuantifier() {
	return quantifier;
	}

	/**
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	*
	* @generated
	*/
	@Override
	public void setQuantifier(Quantifier newQuantifier) {
	final Quantifier oldQuantifier = quantifier;
	quantifier = newQuantifier == null ? QUANTIFIER_EDEFAULT : newQuantifier;
	if (eNotificationRequired()) {
	eNotify(new ENotificationImpl(this, Notification.SET, RulePackage.ITERATE_CONDITION__QUANTIFIER,
	oldQuantifier, quantifier));
	}
	}

	/**
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	*
	* @generated
	*/
	@Override
	public boolean isIfEmpty() {
	return ifEmpty;
	}

	/**
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	*
	* @generated
	*/
	@Override
	public void setIfEmpty(boolean newIfEmpty) {
	final boolean oldIfEmpty = ifEmpty;
	ifEmpty = newIfEmpty;
	if (eNotificationRequired()) {
	eNotify(new ENotificationImpl(this, Notification.SET, RulePackage.ITERATE_CONDITION__IF_EMPTY, oldIfEmpty,
	ifEmpty));
	}
	}

	/**
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	*
	* @generated
	*/
	@Override
	public VDomainModelReference getItemReference() {
	return itemReference;
	}

	/**
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	*
	* @generated
	*/
	public NotificationChain basicSetItemReference(VDomainModelReference newItemReference, NotificationChain msgs) {
	final VDomainModelReference oldItemReference = itemReference;
	itemReference = newItemReference;
	if (eNotificationRequired()) {
	final ENotificationImpl notification = new ENotificationImpl(this, Notification.SET,
	RulePackage.ITERATE_CONDITION__ITEM_REFERENCE, oldItemReference, newItemReference);
	if (msgs == null) {
	msgs = notification;
	} else {
	msgs.add(notification);
	}
	}
	return msgs;
	}

	/**
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	*
	* @generated
	*/
	@Override
	public void setItemReference(VDomainModelReference newItemReference) {
	if (newItemReference != itemReference) {
	NotificationChain msgs = null;
	if (itemReference != null) {
	msgs = ((InternalEObject) itemReference).eInverseRemove(this,
	EOPPOSITE_FEATURE_BASE - RulePackage.ITERATE_CONDITION__ITEM_REFERENCE, null, msgs);
	}
	if (newItemReference != null) {
	msgs = ((InternalEObject) newItemReference).eInverseAdd(this,
	EOPPOSITE_FEATURE_BASE - RulePackage.ITERATE_CONDITION__ITEM_REFERENCE, null, msgs);
	}
	msgs = basicSetItemReference(newItemReference, msgs);
	if (msgs != null) {
	msgs.dispatch();
	}
	} else if (eNotificationRequired()) {
	eNotify(new ENotificationImpl(this, Notification.SET, RulePackage.ITERATE_CONDITION__ITEM_REFERENCE,
	newItemReference, newItemReference));
	}
	}

	/**
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	*
	* @generated
	*/
	@Override
	public Condition getItemCondition() {
	return itemCondition;
	}

	/**
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	*
	* @generated
	*/
	public NotificationChain basicSetItemCondition(Condition newItemCondition, NotificationChain msgs) {
	final Condition oldItemCondition = itemCondition;
	itemCondition = newItemCondition;
	if (eNotificationRequired()) {
	final ENotificationImpl notification = new ENotificationImpl(this, Notification.SET,
	RulePackage.ITERATE_CONDITION__ITEM_CONDITION, oldItemCondition, newItemCondition);
	if (msgs == null) {
	msgs = notification;
	} else {
	msgs.add(notification);
	}
	}
	return msgs;
	}

	/**
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	*
	* @generated
	*/
	@Override
	public void setItemCondition(Condition newItemCondition) {
	if (newItemCondition != itemCondition) {
	NotificationChain msgs = null;
	if (itemCondition != null) {
	msgs = ((InternalEObject) itemCondition).eInverseRemove(this,
	EOPPOSITE_FEATURE_BASE - RulePackage.ITERATE_CONDITION__ITEM_CONDITION, null, msgs);
	}
	if (newItemCondition != null) {
	msgs = ((InternalEObject) newItemCondition).eInverseAdd(this,
	EOPPOSITE_FEATURE_BASE - RulePackage.ITERATE_CONDITION__ITEM_CONDITION, null, msgs);
	}
	msgs = basicSetItemCondition(newItemCondition, msgs);
	if (msgs != null) {
	msgs.dispatch();
	}
	} else if (eNotificationRequired()) {
	eNotify(new ENotificationImpl(this, Notification.SET, RulePackage.ITERATE_CONDITION__ITEM_CONDITION,
	newItemCondition, newItemCondition));
	}
	}

	/**
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	*
	* @generated
	*/
	@Override
	public NotificationChain eInverseRemove(InternalEObject otherEnd, int featureID, NotificationChain msgs) {
	switch (featureID) {
	case RulePackage.ITERATE_CONDITION__ITEM_REFERENCE:
	return basicSetItemReference(null, msgs);
	case RulePackage.ITERATE_CONDITION__ITEM_CONDITION:
	return basicSetItemCondition(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 RulePackage.ITERATE_CONDITION__QUANTIFIER:
	return getQuantifier();
	case RulePackage.ITERATE_CONDITION__IF_EMPTY:
	return isIfEmpty();
	case RulePackage.ITERATE_CONDITION__ITEM_REFERENCE:
	return getItemReference();
	case RulePackage.ITERATE_CONDITION__ITEM_CONDITION:
	return getItemCondition();
	}
	return super.eGet(featureID, resolve, coreType);
	}

	/**
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	*
	* @generated
	*/
	@Override
	public void eSet(int featureID, Object newValue) {
	switch (featureID) {
	case RulePackage.ITERATE_CONDITION__QUANTIFIER:
	setQuantifier((Quantifier) newValue);
	return;
	case RulePackage.ITERATE_CONDITION__IF_EMPTY:
	setIfEmpty((Boolean) newValue);
	return;
	case RulePackage.ITERATE_CONDITION__ITEM_REFERENCE:
	setItemReference((VDomainModelReference) newValue);
	return;
	case RulePackage.ITERATE_CONDITION__ITEM_CONDITION:
	setItemCondition((Condition) newValue);
	return;
	}
	super.eSet(featureID, newValue);
	}

	/**
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	*
	* @generated
	*/
	@Override
	public void eUnset(int featureID) {
	switch (featureID) {
	case RulePackage.ITERATE_CONDITION__QUANTIFIER:
	setQuantifier(QUANTIFIER_EDEFAULT);
	return;
	case RulePackage.ITERATE_CONDITION__IF_EMPTY:
	setIfEmpty(IF_EMPTY_EDEFAULT);
	return;
	case RulePackage.ITERATE_CONDITION__ITEM_REFERENCE:
	setItemReference((VDomainModelReference) null);
	return;
	case RulePackage.ITERATE_CONDITION__ITEM_CONDITION:
	setItemCondition((Condition) null);
	return;
	}
	super.eUnset(featureID);
	}

	/**
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	*
	* @generated
	*/
	@Override
	public boolean eIsSet(int featureID) {
	switch (featureID) {
	case RulePackage.ITERATE_CONDITION__QUANTIFIER:
	return quantifier != QUANTIFIER_EDEFAULT;
	case RulePackage.ITERATE_CONDITION__IF_EMPTY:
	return ifEmpty != IF_EMPTY_EDEFAULT;
	case RulePackage.ITERATE_CONDITION__ITEM_REFERENCE:
	return itemReference != null;
	case RulePackage.ITERATE_CONDITION__ITEM_CONDITION:
	return itemCondition != null;
	}
	return super.eIsSet(featureID);
	}

	/**
	* <!-- begin-user-doc -->
	* <!-- end-user-doc -->
	*
	* @generated
	*/
	@Override
	public String toString() {
	if (eIsProxy()) {
	return super.toString();
	}

	final StringBuffer result = new StringBuffer(super.toString());
	result.append(" (quantifier: "); //$NON-NLS-1$
	result.append(quantifier);
	result.append(", ifEmpty: "); //$NON-NLS-1$
	result.append(ifEmpty);
	result.append(')');
	return result.toString();
	}

	@Override
	public boolean evaluate(EObject domainModel) {
	final VDomainModelReference path = getItemReference();
	final Collection<? extends EObject> subjects = get(domainModel, path);
	return doEvaluate(subjects);
	}

	/**
	* Evaluates me by iteration of the given {@code subjects}.
	*
	* @param subjects the objects over which to iterate my {@link #getItemCondition() condition}
	* @return the result of the iteration
	*/
	protected boolean doEvaluate(Collection<? extends EObject> subjects) {
	boolean result = isIfEmpty();

	for (final EObject next : subjects) {
	result = getItemCondition().evaluate(next);
	if (!result && getQuantifier() == Quantifier.ALL) {
	break; // Short-circuit
	}
	if (result && getQuantifier() == Quantifier.ANY) {
	break; // Short-circuit
	}
	}

	return result;
	}

	/**
	* Obtains the objects referenced by a domain-model reference, from the given
	* {@code owner} object.
	*
	* @param owner the owner of the reference
	* @param dmr the domain-model reference to follow
	*
	* @return the referenced objects
	*/
	List<? extends EObject> get(EObject owner, VDomainModelReference dmr) {
	try {
	@SuppressWarnings("unchecked")
	IObservableList<? extends EObject> result = Activator.getDefault().getEMFFormsDatabinding()
	.getObservableList(dmr, owner);

	// We have to have EObjects, which means an EReference
	if (result == null \|\| !(result.getElementType() instanceof EReference)) {
	result = Observables.emptyObservableList();
	}
	return result;
	} catch (final DatabindingFailedException e) {
	Activator.log(e);
	return Collections.emptyList();
	}
	}

	@Override
	public boolean evaluateChangedValues(EObject domainModel,
	Map<EStructuralFeature.Setting, Object> possibleNewValues) {

	// First, partition the proposed changes into
	// - changes to the set of objects that I iterate over (subjects)
	// - changes to the features of my subjects
	final List<Collection<? extends EObject>> proposedNewSubjects = new ArrayList<Collection<? extends EObject>>();
	final Map<EStructuralFeature.Setting, Object> proposedChangesToSubjects = new HashMap<EStructuralFeature.Setting, Object>();

	for (final Map.Entry<EStructuralFeature.Setting, Object> next : possibleNewValues.entrySet()) {
	final EStructuralFeature.Setting setting = next.getKey();
	final Object proposedValue = next.getValue();

	if (setting.getEObject() == domainModel) {
	// Changing the set of objects to iterate
	@SuppressWarnings("unchecked")
	final List<? extends EObject> newValues = (List<? extends EObject>) next.getValue();
	proposedNewSubjects.add(newValues);
	} else {
	// Change features of an existing subject
	proposedChangesToSubjects.put(setting, proposedValue);
	}
	}

	// Now, evaluate the two partitions. Within each, evaluate the disjuction
	// but between the partitions it's a conjuction
	boolean result = true;
	for (final Collection<? extends EObject> newValues : proposedNewSubjects) {
	result = doEvaluate(newValues);
	if (result) {
	break;
	}
	}
	if (result) {
	for (final Map.Entry<EStructuralFeature.Setting, Object> next : proposedChangesToSubjects.entrySet()) {
	final EStructuralFeature.Setting setting = next.getKey();
	final Object proposedValue = next.getValue();

	result = getItemCondition().evaluateChangedValues(setting.getEObject(),
	Collections.singletonMap(setting, proposedValue));

	if (!result && getQuantifier() == Quantifier.ALL) {
	break; // Short-circuit
	}
	if (result && getQuantifier() == Quantifier.ANY) {
	break; // Short-circuit
	}
	}
	}

	return result;
	}

	} // IterateConditionImpl