MultiAttributeSetOperationImpl.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.common.util.EList;
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.MultiAttributeSetOperation;
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>Multi Attribute Set Operation</b></em>'. <!--
 * end-user-doc -->
 * <p>
 * The following features are implemented:
 * <ul>
 * <li>
 * {@link org.eclipse.emf.emfstore.internal.server.model.versioning.operations.impl.MultiAttributeSetOperationImpl#getIndex
 * <em>Index</em>}</li>
 * <li>
 * {@link org.eclipse.emf.emfstore.internal.server.model.versioning.operations.impl.MultiAttributeSetOperationImpl#getOldValue
 * <em>Old Value</em>}</li>
 * <li>
 * {@link org.eclipse.emf.emfstore.internal.server.model.versioning.operations.impl.MultiAttributeSetOperationImpl#getNewValue
 * <em>New Value</em>}</li>
 * </ul>
 * </p>
 *
 * @generated
 */
public class MultiAttributeSetOperationImpl extends FeatureOperationImpl implements MultiAttributeSetOperation {
	/**
	 * The default value of the '{@link #getIndex() <em>Index</em>}' attribute.
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 *
	 * @see #getIndex()
	 * @generated
	 * @ordered
	 */
	protected static final int INDEX_EDEFAULT = 0;

	/**
	 * The cached value of the '{@link #getIndex() <em>Index</em>}' attribute.
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 *
	 * @see #getIndex()
	 * @generated
	 * @ordered
	 */
	protected int index = INDEX_EDEFAULT;

	/**
	 * 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 MultiAttributeSetOperationImpl() {
		super();
	}

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

	/**
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 *
	 * @generated
	 */
	public int getIndex() {
		return index;
	}

	/**
	 * <!-- begin-user-doc --> <!-- end-user-doc -->
	 *
	 * @generated
	 */
	public void setIndex(int newIndex) {
		final int oldIndex = index;
		index = newIndex;
		if (eNotificationRequired()) {
			eNotify(new ENotificationImpl(this, Notification.SET,
				OperationsPackage.MULTI_ATTRIBUTE_SET_OPERATION__INDEX, oldIndex, index));
		}
	}

	/**
	 * <!-- 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.MULTI_ATTRIBUTE_SET_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.MULTI_ATTRIBUTE_SET_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.MULTI_ATTRIBUTE_SET_OPERATION__INDEX:
			return getIndex();
		case OperationsPackage.MULTI_ATTRIBUTE_SET_OPERATION__OLD_VALUE:
			return getOldValue();
		case OperationsPackage.MULTI_ATTRIBUTE_SET_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.MULTI_ATTRIBUTE_SET_OPERATION__INDEX:
			setIndex((Integer) newValue);
			return;
		case OperationsPackage.MULTI_ATTRIBUTE_SET_OPERATION__OLD_VALUE:
			setOldValue(newValue);
			return;
		case OperationsPackage.MULTI_ATTRIBUTE_SET_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.MULTI_ATTRIBUTE_SET_OPERATION__INDEX:
			setIndex(INDEX_EDEFAULT);
			return;
		case OperationsPackage.MULTI_ATTRIBUTE_SET_OPERATION__OLD_VALUE:
			setOldValue(OLD_VALUE_EDEFAULT);
			return;
		case OperationsPackage.MULTI_ATTRIBUTE_SET_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.MULTI_ATTRIBUTE_SET_OPERATION__INDEX:
			return index != INDEX_EDEFAULT;
		case OperationsPackage.MULTI_ATTRIBUTE_SET_OPERATION__OLD_VALUE:
			return OLD_VALUE_EDEFAULT == null ? oldValue != null : !OLD_VALUE_EDEFAULT.equals(oldValue);
		case OperationsPackage.MULTI_ATTRIBUTE_SET_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(" (index: "); //$NON-NLS-1$
		result.append(index);
		result.append(", oldValue: "); //$NON-NLS-1$
		result.append(oldValue);
		result.append(", newValue: "); //$NON-NLS-1$
		result.append(newValue);
		result.append(')');
		return result.toString();
	}

	/**
	 *
	 * {@inheritDoc}
	 *
	 * @see org.eclipse.emf.emfstore.internal.server.model.versioning.operations.AbstractOperation#apply(org.eclipse.emf.emfstore.internal.common.model.IdEObjectCollection)
	 */
	@SuppressWarnings("unchecked")
	public void apply(IdEObjectCollection project) {
		final EObject modelElement = project.getModelElement(getModelElementId());
		if (modelElement == null) {
			return;
		}

		EAttribute feature;
		try {
			feature = (EAttribute) getFeature(modelElement);

			switch (getUnset().getValue()) {
			case UnsetType.IS_UNSET_VALUE:
				modelElement.eUnset(feature);
				break;
			case UnsetType.NONE_VALUE:
			case UnsetType.WAS_UNSET_VALUE:
				final EList<Object> list = (EList<Object>) modelElement.eGet(feature);
				if (feature.isUnique() && list.contains(getNewValue())) {
					// silently skip setting value since it is already contained, but should be unique
					return;
				}
				final int i = getIndex();
				if (i >= 0 && i < list.size()) {
					list.set(i, getNewValue());
				}
				break;
			}
		} catch (final UnkownFeatureException e) {
		}
	}

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

		setUnsetForReverseOperation(attributeOperation);

		return attributeOperation;
	}

} // MultiAttributeSetOperationImpl