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orcas model modified by syntax extensions (contains the original model). If custom-syntax-extensions are provided, there will be a custom artifact.
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/**
 */
package de.opitzconsulting.orcasDsl.impl;

import de.opitzconsulting.orcasDsl.ColumnRef;
import de.opitzconsulting.orcasDsl.EnableType;
import de.opitzconsulting.orcasDsl.OrcasDslPackage;
import de.opitzconsulting.orcasDsl.UniqueKey;

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

/**
 * 
 * An implementation of the model object 'Unique Key'.
 * 
 * 
 * The following features are implemented:
 * 
 * 
 *   {@link de.opitzconsulting.orcasDsl.impl.UniqueKeyImpl#getUk_columns Uk columns}
 *   {@link de.opitzconsulting.orcasDsl.impl.UniqueKeyImpl#getIndexname Indexname}
 *   {@link de.opitzconsulting.orcasDsl.impl.UniqueKeyImpl#getStatus Status}
 * 
 *
 * @generated
 */
public class UniqueKeyImpl extends IndexOrUniqueKeyImpl implements UniqueKey
{
  /**
   * The cached value of the '{@link #getUk_columns() Uk columns}' containment reference list.
   * 
   * 
   * @see #getUk_columns()
   * @generated
   * @ordered
   */
  public EList uk_columns;

  /**
   * The default value of the '{@link #getIndexname() Indexname}' attribute.
   * 
   * 
   * @see #getIndexname()
   * @generated
   * @ordered
   */
  public static final String INDEXNAME_EDEFAULT = null;

  /**
   * The cached value of the '{@link #getIndexname() Indexname}' attribute.
   * 
   * 
   * @see #getIndexname()
   * @generated
   * @ordered
   */
  public String indexname = INDEXNAME_EDEFAULT;

  /**
   * The default value of the '{@link #getStatus() Status}' attribute.
   * 
   * 
   * @see #getStatus()
   * @generated
   * @ordered
   */
  public static final EnableType STATUS_EDEFAULT =  null;

  /**
   * The cached value of the '{@link #getStatus() Status}' attribute.
   * 
   * 
   * @see #getStatus()
   * @generated
   * @ordered
   */
  public EnableType status = STATUS_EDEFAULT;

  /**
   * 
   * 
   * @generated
   */
  public UniqueKeyImpl()
  {
    super();
  }

  /**
   * 
   * 
   * @generated
   */
  @Override
  public EClass eStaticClass()
  {
    return OrcasDslPackage.Literals.UNIQUE_KEY;
  }

  /**
   * 
   * 
   * @generated
   */
  public EList getUk_columns()
  {
    if (uk_columns == null)
    {
      uk_columns = new EObjectContainmentEList(ColumnRef.class, this, OrcasDslPackage.UNIQUE_KEY__UK_COLUMNS);
    }
    return uk_columns;
  }

  /**
   * 
   * 
   * @generated
   */
  public String getIndexname()
  {
    return indexname;
  }

  /**
   * 
   * 
   * @generated
   */
  public void setIndexname(String newIndexname)
  {
    String oldIndexname = indexname;
    indexname = newIndexname;
    if (eNotificationRequired())
      eNotify(new ENotificationImpl(this, Notification.SET, OrcasDslPackage.UNIQUE_KEY__INDEXNAME, oldIndexname, indexname));
  }

  /**
   * 
   * 
   * @generated
   */
  public EnableType getStatus()
  {
    return status;
  }

  /**
   * 
   * 
   * @generated
   */
  public void setStatus(EnableType newStatus)
  {
    EnableType oldStatus = status;
    status = newStatus == null ? STATUS_EDEFAULT : newStatus;
    if (eNotificationRequired())
      eNotify(new ENotificationImpl(this, Notification.SET, OrcasDslPackage.UNIQUE_KEY__STATUS, oldStatus, status));
  }

  /**
   * 
   * 
   * @generated
   */
  @Override
  public NotificationChain eInverseRemove(InternalEObject otherEnd, int featureID, NotificationChain msgs)
  {
    switch (featureID)
    {
      case OrcasDslPackage.UNIQUE_KEY__UK_COLUMNS:
        return ((InternalEList)getUk_columns()).basicRemove(otherEnd, msgs);
    }
    return super.eInverseRemove(otherEnd, featureID, msgs);
  }

  /**
   * 
   * 
   * @generated
   */
  @Override
  public Object eGet(int featureID, boolean resolve, boolean coreType)
  {
    switch (featureID)
    {
      case OrcasDslPackage.UNIQUE_KEY__UK_COLUMNS:
        return getUk_columns();
      case OrcasDslPackage.UNIQUE_KEY__INDEXNAME:
        return getIndexname();
      case OrcasDslPackage.UNIQUE_KEY__STATUS:
        return getStatus();
    }
    return super.eGet(featureID, resolve, coreType);
  }

  /**
   * 
   * 
   * @generated
   */
  @SuppressWarnings("unchecked")
  @Override
  public void eSet(int featureID, Object newValue)
  {
    switch (featureID)
    {
      case OrcasDslPackage.UNIQUE_KEY__UK_COLUMNS:
        getUk_columns().clear();
        getUk_columns().addAll((Collection)newValue);
        return;
      case OrcasDslPackage.UNIQUE_KEY__INDEXNAME:
        setIndexname((String)newValue);
        return;
      case OrcasDslPackage.UNIQUE_KEY__STATUS:
        setStatus((EnableType)newValue);
        return;
    }
    super.eSet(featureID, newValue);
  }

  /**
   * 
   * 
   * @generated
   */
  @Override
  public void eUnset(int featureID)
  {
    switch (featureID)
    {
      case OrcasDslPackage.UNIQUE_KEY__UK_COLUMNS:
        getUk_columns().clear();
        return;
      case OrcasDslPackage.UNIQUE_KEY__INDEXNAME:
        setIndexname(INDEXNAME_EDEFAULT);
        return;
      case OrcasDslPackage.UNIQUE_KEY__STATUS:
        setStatus(STATUS_EDEFAULT);
        return;
    }
    super.eUnset(featureID);
  }

  /**
   * 
   * 
   * @generated
   */
  @Override
  public boolean eIsSet(int featureID)
  {
    switch (featureID)
    {
      case OrcasDslPackage.UNIQUE_KEY__UK_COLUMNS:
        return uk_columns != null && !uk_columns.isEmpty();
      case OrcasDslPackage.UNIQUE_KEY__INDEXNAME:
        return INDEXNAME_EDEFAULT == null ? indexname != null : !INDEXNAME_EDEFAULT.equals(indexname);
      case OrcasDslPackage.UNIQUE_KEY__STATUS:
        return status != STATUS_EDEFAULT;
    }
    return super.eIsSet(featureID);
  }

  /**
   * 
   * 
   * @generated
   */
  @Override
  public String toString()
  {
    if (eIsProxy()) return super.toString();

    StringBuffer result = new StringBuffer(super.toString());
    result.append(" (indexname: ");
    result.append(indexname);
    result.append(", status: ");
    result.append(status);
    result.append(')');
    return result.toString();
  }

} //UniqueKeyImpl