EAttributeValuePresenceImpl.java

/**
 * <copyright>
 * 
 * Copyright (c) 2010-2016  Thales Global Services S.A.S.
 * 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:
 *    Thales Global Services S.A.S. - initial API and implementation
 * 
 * </copyright>
 */
package org.eclipse.emf.diffmerge.diffdata.impl;

import java.util.Collection;

import org.eclipse.emf.diffmerge.api.IDiffPolicy;
import org.eclipse.emf.diffmerge.api.IMatch;
import org.eclipse.emf.diffmerge.api.Role;
import org.eclipse.emf.diffmerge.api.diff.IAttributeValuePresence;
import org.eclipse.emf.diffmerge.api.scopes.IEditableModelScope;
import org.eclipse.emf.diffmerge.diffdata.DiffdataPackage;
import org.eclipse.emf.diffmerge.diffdata.EAttributeValuePresence;
import org.eclipse.emf.diffmerge.diffdata.EComparison;
import org.eclipse.emf.diffmerge.diffdata.EMatch;
import org.eclipse.emf.ecore.EAttribute;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.EObject;

/**
 * <!-- begin-user-doc -->
 * An implementation of the model object '<em><b>EAttribute Value Presence</b></em>'.
 * <!-- end-user-doc -->
 * <p>
 * The following features are implemented:
 * <ul>
 *   <li>{@link org.eclipse.emf.diffmerge.diffdata.impl.EAttributeValuePresenceImpl#getValue <em>Value</em>}</li>
 * </ul>
 * </p>
 *
 * @generated
 */
public class EAttributeValuePresenceImpl extends EValuePresenceImpl implements
    EAttributeValuePresence {
  /**
   * The default value of the '{@link #getValue() <em>Value</em>}' attribute.
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @see #getValue()
   * @generated
   * @ordered
   */
  protected static final Object VALUE_EDEFAULT = null;
  /**
   * The cached value of the '{@link #getValue() <em>Value</em>}' attribute.
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @see #getValue()
   * @generated
   * @ordered
   */
  protected Object value = VALUE_EDEFAULT;

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

  /**
   * Constructor
   * @param comparison_p the non-null comparison to which this difference belongs
   * @param elementMatch_p the non-null match for the element holding the value
   * @param attribute_p the non-null attribute holding the value
   * @param value_p the non-null value held
   * @param presenceRole_p the role in which the value is held: TARGET or REFERENCE
   * @param isOrder_p whether the value presence is solely due to ordering
   * @generated NOT
   */
  public EAttributeValuePresenceImpl(EComparison comparison_p,
      EMatch elementMatch_p, EAttribute attribute_p, Object value_p,
      Role presenceRole_p, boolean isOrder_p) {
    super(comparison_p, elementMatch_p, attribute_p, presenceRole_p, isOrder_p);
    value = value_p;
    ((IMatch.Editable) elementMatch).addRelatedDifference(this);
  }

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

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

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

  /**
   * <!-- begin-user-doc -->
   * <!-- end-user-doc -->
   * @generated
   */
  @Override
  public boolean eIsSet(int featureID) {
    switch (featureID) {
    case DiffdataPackage.EATTRIBUTE_VALUE_PRESENCE__VALUE:
      return VALUE_EDEFAULT == null ? value != null : !VALUE_EDEFAULT
          .equals(value);
    }
    return super.eIsSet(featureID);
  }

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

    StringBuffer result = new StringBuffer(super.toString());
    result.append(" (value: "); //$NON-NLS-1$
    result.append(value);
    result.append(')');
    return result.toString();
  }
  
  /**
   * @see org.eclipse.emf.diffmerge.diffdata.impl.EValuePresenceImpl#getFeature()
   * @generated NOT
   */
  @Override
  public EAttribute getFeature() {
    return (EAttribute) super.getFeature();
  }

  /**
   * @see org.eclipse.emf.diffmerge.diffdata.impl.EValuePresenceImpl#getSymmetrical()
   * @generated NOT
   */
  @Override
  public IAttributeValuePresence getSymmetrical() {
    IAttributeValuePresence result = null;
    if (!getFeature().isMany()) {
      Collection<IAttributeValuePresence> candidates = getElementMatch()
          .getAttributeDifferences(getFeature());
      assert candidates.size() <= 2; // Because !isMany()
      for (IAttributeValuePresence candidate : candidates) {
        if (candidate.getPresenceRole() == getAbsenceRole()) {
          result = candidate;
          break;
        }
      }
    } else if (isOrder()) {
      result = getElementMatch()
          .getAttributeValueDifference(getFeature(), null);
    }
    return result;
  }

  /**
   * @see org.eclipse.emf.diffmerge.api.diff.IElementRelativeDifference#isUnrelatedToContainmentTree()
   * @generated NOT
   */
  public boolean isUnrelatedToContainmentTree() {
    return true;
  }

  /**
   * @see org.eclipse.emf.diffmerge.diffdata.impl.EValuePresenceImpl#mergeOrder()
   * @generated NOT
   */
  @Override
  protected void mergeOrder() {
    // TODO Implement
  }

  /**
   * @see org.eclipse.emf.diffmerge.diffdata.impl.EValuePresenceImpl#mergeValueAddition()
   * @generated NOT
   */
  @Override
  protected void mergeValueAddition() {
    IEditableModelScope absenceScope = getAbsenceScope();
    EObject holderMatch = getMatchOfHolder();
    assert holderMatch != null; // Must be guaranteed by diff dependency handling
    absenceScope.add(holderMatch, getFeature(), getValue());
    IDiffPolicy diffPolicy = getComparison().getLastDiffPolicy();
    if (diffPolicy != null && diffPolicy.considerOrdered(getFeature())) {
      // TODO Implement
    }
  }

  /**
   * @see org.eclipse.emf.diffmerge.diffdata.impl.EValuePresenceImpl#mergeValueRemoval()
   * @generated NOT
   */
  @Override
  public void mergeValueRemoval() {
    IEditableModelScope presenceScope = getPresenceScope();
    presenceScope.remove(getHolder(), getFeature(), getValue());
  }

} //EAttributeValuePresenceImpl