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/**
 * Copyright (c) 2011, University of Konstanz, Distributed Systems Group All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification, are permitted
 * provided that the following conditions are met: * Redistributions of source code must retain the
 * above copyright notice, this list of conditions and the following disclaimer. * Redistributions
 * in binary form must reproduce the above copyright notice, this list of conditions and the
 * following disclaimer in the documentation and/or other materials provided with the distribution.
 * * Neither the name of the University of Konstanz nor the names of its contributors may be used to
 * endorse or promote products derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
 * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL  BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

package org.sirix.node;

import static com.google.common.base.Preconditions.checkNotNull;
import javax.annotation.Nullable;
import org.sirix.node.delegates.NodeDelegate;
import org.sirix.node.interfaces.Node;
import com.google.common.base.MoreObjects;
import com.google.common.base.Objects;

/**
 * If a node is deleted, it will be encapsulated over this class.
 *
 * @author Sebastian Graf
 *
 */
public final class DeletedNode extends AbstractForwardingNode {

  /**
   * Delegate for common data.
   */
  private final NodeDelegate mDel;

  /**
   * Constructor.
   *
   * @param nodeDel node delegate
   */
  public DeletedNode(final NodeDelegate nodeDel) {
    mDel = checkNotNull(nodeDel);
  }

  @Override
  public NodeKind getKind() {
    return NodeKind.DELETE;
  }

  @Override
  public int hashCode() {
    return Objects.hashCode(mDel);
  }

  @Override
  public boolean equals(final Object obj) {
    if (!(obj instanceof DeletedNode))
      return false;

    final DeletedNode other = (DeletedNode) obj;
    return Objects.equal(mDel, other.mDel);
  }

  @Override
  public String toString() {
    return MoreObjects.toStringHelper(this).add("delegate", mDel.toString()).toString();
  }

  @Override
  public boolean isSameItem(final @Nullable Node other) {
    return mDel.isSameItem(other);
  }

  @Override
  protected NodeDelegate delegate() {
    return mDel;
  }
}