reportbuilder/java/org/libreoffice/report/pentaho/styles/StyleMapperKey.java

   1 /*
   2  * This file is part of the LibreOffice project.
   3  *
   4  * This Source Code Form is subject to the terms of the Mozilla Public
   5  * License, v. 2.0. If a copy of the MPL was not distributed with this
   6  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   7  *
   8  * This file incorporates work covered by the following license notice:
   9  *
  10  *   Licensed to the Apache Software Foundation (ASF) under one or more
  11  *   contributor license agreements. See the NOTICE file distributed
  12  *   with this work for additional information regarding copyright
  13  *   ownership. The ASF licenses this file to you under the Apache
  14  *   License, Version 2.0 (the "License"); you may not use this file
  15  *   except in compliance with the License. You may obtain a copy of
  16  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  17  */
  18 package org.libreoffice.report.pentaho.styles;
  19
  20 /**
  21  * A hash key for the stylemapper.
  22  *
  23  * @since 12.03.2007
  24  */
  25 public final class StyleMapperKey
  26 {
  27
  28     private final String elementNamespace;
  29     private final String elementName;
  30     private final String attributeNamespace;
  31     private final String attributeName;
  32     private final int hashCode;
  33
  34     public StyleMapperKey(final String elementNamespace,
  35             final String elementName,
  36             final String attributeNamespace,
  37             final String attributeName)
  38     {
  39         if (elementNamespace == null)
  40         {
  41             throw new NullPointerException();
  42         }
  43         if (elementName == null)
  44         {
  45             throw new NullPointerException();
  46         }
  47
  48         this.elementNamespace = elementNamespace;
  49         this.elementName = elementName;
  50         this.attributeNamespace = attributeNamespace;
  51         this.attributeName = attributeName;
  52         this.hashCode = computeHashCode();
  53     }
  54
  55     @Override
  56     public boolean equals(final Object o)
  57     {
  58         if (this != o)
  59         {
  60             if (o == null || getClass() != o.getClass())
  61             {
  62                 return false;
  63             }
  64
  65             final StyleMapperKey that = (StyleMapperKey) o;
  66
  67             if ((attributeName != null ? !attributeName.equals(that.attributeName) : that.attributeName != null) || (attributeNamespace != null ? !attributeNamespace.equals(that.attributeNamespace) : that.attributeNamespace != null) || !elementName.equals(that.elementName) || !elementNamespace.equals(that.elementNamespace))
  68             {
  69                 return false;
  70             }
  71         }
  72
  73         return true;
  74     }
  75
  76     private int computeHashCode()
  77     {
  78         int result = elementNamespace.hashCode();
  79         result = 31 * result + elementName.hashCode();
  80         result = 31 * result + (attributeNamespace != null ? attributeNamespace.hashCode() : 0);
  81         result = 31 * result + (attributeName != null ? attributeName.hashCode() : 0);
  82         return result;
  83     }
  84
  85     @Override
  86     public int hashCode()
  87     {
  88         return hashCode;
  89     }
  90 }