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/**
 * Copyright (C) cedarsoft GmbH.
 *
 * Licensed under the GNU General Public License version 3 (the "License")
 * with Classpath Exception; you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 *
 *         http://www.cedarsoft.org/gpl3ce
 *         (GPL 3 with Classpath Exception)
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 3 only, as
 * published by the Free Software Foundation. cedarsoft GmbH designates this
 * particular file as subject to the "Classpath" exception as provided
 * by cedarsoft GmbH in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 3 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 3 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact cedarsoft GmbH, 72810 Gomaringen, Germany,
 * or visit www.cedarsoft.com if you need additional information or
 * have any questions.
 */
package com.cedarsoft.couchdb.core;

import javax.annotation.Nonnull;

/**
 * a unique id describes the exact revision for a exact id
 *
 * @author Johannes Schneider ([email protected])
 */
public class UniqueId {
  @Nonnull
  private final DocId id;
  @Nonnull
  private final Revision revision;

  public UniqueId( @Nonnull DocId id, @Nonnull Revision revision ) {
    this.id = id;
    this.revision = revision;
  }

  @Nonnull
  public DocId getId() {
    return id;
  }

  @Nonnull
  public Revision getRevision() {
    return revision;
  }

  @Override
  public boolean equals( Object obj ) {
    if ( this == obj ) {
      return true;
    }
    if ( !( obj instanceof UniqueId ) ) {
      return false;
    }

    UniqueId uniqueId = ( UniqueId ) obj;

    if ( !id.equals( uniqueId.id ) ) {
      return false;
    }
    if ( !revision.equals( uniqueId.revision ) ) {
      return false;
    }

    return true;
  }

  @Override
  public int hashCode() {
    int result = id.hashCode();
    result = 31 * result + revision.hashCode();
    return result;
  }

  @Deprecated
  @Nonnull
  public Revision getRev() {
    return getRevision();
  }

  @Override
  public String toString() {
    return "<" + id + "::" + revision + ">";
  }
}