bundles/org.eclipse.emf.emfstore.server.model/src/org/eclipse/emf/emfstore/internal/server/model/versioning/operations/impl/AttributeOperationImpl.java

/*******************************************************************************
 * Copyright (c) 2008-2011 Chair for Applied Software Engineering,
 * Technische Universitaet Muenchen.
 * 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:
 ******************************************************************************/
package org.eclipse.emf.emfstore.internal.server.model.versioning.operations.impl;

import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.ecore.EAttribute;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EObject;
import org.eclipse.emf.ecore.impl.ENotificationImpl;
import org.eclipse.emf.emfstore.internal.common.model.IdEObjectCollection;
import org.eclipse.emf.emfstore.internal.server.model.versioning.operations.AbstractOperation;
import org.eclipse.emf.emfstore.internal.server.model.versioning.operations.AttributeOperation;
import org.eclipse.emf.emfstore.internal.server.model.versioning.operations.OperationsFactory;
import org.eclipse.emf.emfstore.internal.server.model.versioning.operations.OperationsPackage;
import org.eclipse.emf.emfstore.internal.server.model.versioning.operations.UnkownFeatureException;
import org.eclipse.emf.emfstore.internal.server.model.versioning.operations.UnsetType;

/**
 * <!-- begin-user-doc --> An implementation of the model object ' <em><b>Attribute Operation</b></em>'. <!--
 * end-user-doc -->
 * <p>
 * The following features are implemented:
 * </p>
 * <ul>
 * <li>
 * {@link org.eclipse.emf.emfstore.internal.server.model.versioning.operations.impl.AttributeOperationImpl#getOldValue
 * <em>Old Value</em>}</li>
 * <li>
 * {@link org.eclipse.emf.emfstore.internal.server.model.versioning.operations.impl.AttributeOperationImpl#getNewValue
 * <em>New Value</em>}</li>
 * </ul>
 *
 * @generated
 */
public class AttributeOperationImpl extends FeatureOperationImpl implements AttributeOperation {
	/**
	 * The default value of the '{@link #getOldValue() <em>Old Value</em>}' attribute.
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 *
	 * @see #getOldValue()
	 * @generated
	 * @ordered
	 */
	protected static final Object OLD_VALUE_EDEFAULT = null;

	/**
	 * The cached value of the '{@link #getOldValue() <em>Old Value</em>}' attribute.
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 *
	 * @see #getOldValue()
	 * @generated
	 * @ordered
	 */
	protected Object oldValue = OLD_VALUE_EDEFAULT;

	/**
	 * The default value of the '{@link #getNewValue() <em>New Value</em>}' attribute.
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 *
	 * @see #getNewValue()
	 * @generated
	 * @ordered
	 */
	protected static final Object NEW_VALUE_EDEFAULT = null;

	/**
	 * The cached value of the '{@link #getNewValue() <em>New Value</em>}' attribute.
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 *
	 * @see #getNewValue()
	 * @generated
	 * @ordered
	 */
	protected Object newValue = NEW_VALUE_EDEFAULT;

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

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

	/**
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 *
	 * @generated
	 */
	public Object getOldValue() {
		return oldValue;
	}

	/**
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 *
	 * @generated
	 */
	public void setOldValue(Object newOldValue) {
		final Object oldOldValue = oldValue;
		oldValue = newOldValue;
		if (eNotificationRequired()) {
			eNotify(new ENotificationImpl(this, Notification.SET, OperationsPackage.ATTRIBUTE_OPERATION__OLD_VALUE,
				oldOldValue, oldValue));
		}
	}

	/**
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 *
	 * @generated
	 */
	public Object getNewValue() {
		return newValue;
	}

	/**
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 *
	 * @generated
	 */
	public void setNewValue(Object newNewValue) {
		final Object oldNewValue = newValue;
		newValue = newNewValue;
		if (eNotificationRequired()) {
			eNotify(new ENotificationImpl(this, Notification.SET, OperationsPackage.ATTRIBUTE_OPERATION__NEW_VALUE,
				oldNewValue, newValue));
		}
	}

	/**
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 *
	 * @generated
	 */
	@Override
	public Object eGet(int featureID, boolean resolve, boolean coreType) {
		switch (featureID) {
		case OperationsPackage.ATTRIBUTE_OPERATION__OLD_VALUE:
			return getOldValue();
		case OperationsPackage.ATTRIBUTE_OPERATION__NEW_VALUE:
			return getNewValue();
		}
		return super.eGet(featureID, resolve, coreType);
	}

	/**
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 *
	 * @generated
	 */
	@Override
	public void eSet(int featureID, Object newValue) {
		switch (featureID) {
		case OperationsPackage.ATTRIBUTE_OPERATION__OLD_VALUE:
			setOldValue(newValue);
			return;
		case OperationsPackage.ATTRIBUTE_OPERATION__NEW_VALUE:
			setNewValue(newValue);
			return;
		}
		super.eSet(featureID, newValue);
	}

	/**
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 *
	 * @generated
	 */
	@Override
	public void eUnset(int featureID) {
		switch (featureID) {
		case OperationsPackage.ATTRIBUTE_OPERATION__OLD_VALUE:
			setOldValue(OLD_VALUE_EDEFAULT);
			return;
		case OperationsPackage.ATTRIBUTE_OPERATION__NEW_VALUE:
			setNewValue(NEW_VALUE_EDEFAULT);
			return;
		}
		super.eUnset(featureID);
	}

	/**
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 *
	 * @generated
	 */
	@Override
	public boolean eIsSet(int featureID) {
		switch (featureID) {
		case OperationsPackage.ATTRIBUTE_OPERATION__OLD_VALUE:
			return OLD_VALUE_EDEFAULT == null ? oldValue != null : !OLD_VALUE_EDEFAULT.equals(oldValue);
		case OperationsPackage.ATTRIBUTE_OPERATION__NEW_VALUE:
			return NEW_VALUE_EDEFAULT == null ? newValue != null : !NEW_VALUE_EDEFAULT.equals(newValue);
		}
		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(" (oldValue: "); //$NON-NLS-1$
		result.append(oldValue);
		result.append(", newValue: "); //$NON-NLS-1$
		result.append(newValue);
		result.append(')');
		return result.toString();
	}

	public void apply(IdEObjectCollection project) {
		final EObject object = project.getModelElement(getModelElementId());

		if (object == null) {
			// silently fail
			return;
		}

		EAttribute attribute;
		try {
			attribute = (EAttribute) this.getFeature(object);
			switch (getUnset().getValue()) {
			case UnsetType.IS_UNSET_VALUE:
				object.eUnset(attribute);
				break;
			case UnsetType.NONE_VALUE:
				object.eSet(attribute, getNewValue());
				break;
			case UnsetType.WAS_UNSET_VALUE:
				object.eSet(attribute, getNewValue());
				break;
			}
		} catch (final UnkownFeatureException e) {
			// fail silently
			return;
		}
	}

	@Override
	public AbstractOperation reverse() {
		final AttributeOperation attributeOperation = OperationsFactory.eINSTANCE.createAttributeOperation();
		super.reverse(attributeOperation);
		// swap old and new value
		attributeOperation.setNewValue(getOldValue());
		attributeOperation.setOldValue(getNewValue());

		setUnsetForReverseOperation(attributeOperation);

		return attributeOperation;
	}

} // AttributeOperationImpl