001/* ***** BEGIN LICENSE BLOCK ***** 002 * Version: MPL 1.1/GPL 2.0/LGPL 2.1 003 * 004 * The contents of this file are subject to the Mozilla Public License Version 005 * 1.1 (the "License"); you may not use this file except in compliance with 006 * the License. You may obtain a copy of the License at 007 * http://www.mozilla.org/MPL/ 008 * 009 * Software distributed under the License is distributed on an "AS IS" basis, 010 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License 011 * for the specific language governing rights and limitations under the 012 * License. 013 * 014 * The Original Code is part of dcm4che, an implementation of DICOM(TM) in 015 * Java(TM), hosted at https://github.com/gunterze/dcm4che. 016 * 017 * The Initial Developer of the Original Code is 018 * Agfa Healthcare. 019 * Portions created by the Initial Developer are Copyright (C) 2011 020 * the Initial Developer. All Rights Reserved. 021 * 022 * Contributor(s): 023 * See @authors listed below 024 * 025 * Alternatively, the contents of this file may be used under the terms of 026 * either the GNU General Public License Version 2 or later (the "GPL"), or 027 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), 028 * in which case the provisions of the GPL or the LGPL are applicable instead 029 * of those above. If you wish to allow use of your version of this file only 030 * under the terms of either the GPL or the LGPL, and not to allow others to 031 * use your version of this file under the terms of the MPL, indicate your 032 * decision by deleting the provisions above and replace them with the notice 033 * and other provisions required by the GPL or the LGPL. If you do not delete 034 * the provisions above, a recipient may use your version of this file under 035 * the terms of any one of the MPL, the GPL or the LGPL. 036 * 037 * ***** END LICENSE BLOCK ***** */ 038 039package org.dcm4che3.data; 040 041import java.io.Serializable; 042 043/** 044 * @author Gunter Zeilinger <gunterze@gmail.com> 045 */ 046public class ItemPointer implements Serializable { 047 048 private static final long serialVersionUID = 5183950023496022964L; 049 050 public final int sequenceTag; 051 public final String privateCreator; 052 public final int itemIndex; 053 054 public ItemPointer(int sequenceTag) { 055 this(null, sequenceTag, 0); 056 } 057 058 public ItemPointer(int sequenceTag, int itemIndex) { 059 this(null, sequenceTag, itemIndex); 060 } 061 062 public ItemPointer(String privateCreator, int sequenceTag) { 063 this(privateCreator, sequenceTag, 0); 064 } 065 066 public ItemPointer(String privateCreator, int sequenceTag, int itemIndex) { 067 this.sequenceTag = sequenceTag; 068 this.privateCreator = privateCreator; 069 this.itemIndex = itemIndex; 070 } 071 072 @Override 073 public boolean equals(Object o) { 074 if (this == o) return true; 075 if (o == null || getClass() != o.getClass()) return false; 076 077 ItemPointer that = (ItemPointer) o; 078 079 if (itemIndex != that.itemIndex) return false; 080 if (sequenceTag != that.sequenceTag) return false; 081 if (privateCreator != null ? !privateCreator.equals(that.privateCreator) : that.privateCreator != null) 082 return false; 083 084 return true; 085 } 086 087 @Override 088 public int hashCode() { 089 int result = sequenceTag; 090 result = 31 * result + (privateCreator != null ? privateCreator.hashCode() : 0); 091 result = 31 * result + itemIndex; 092 return result; 093 } 094}