eu.etaxonomy.taxeditor.store/src/main/java/eu/etaxonomy/taxeditor/ui/section/description/SourceComparator.java

   1 /**
   2 * Copyright (C) 2007 EDIT
   3 * European Distributed Institute of Taxonomy
   4 * http://www.e-taxonomy.eu
   5 *
   6 * The contents of this file are subject to the Mozilla Public License Version 1.1
   7 * See LICENSE.TXT at the top of this package for the full license terms.
   8 */
   9 package eu.etaxonomy.taxeditor.ui.section.description;
  10
  11 import java.util.Comparator;
  12
  13 import eu.etaxonomy.cdm.model.description.DescriptionElementSource;
  14 import eu.etaxonomy.cdm.model.reference.OriginalSourceBase;
  15 import eu.etaxonomy.cdm.model.reference.OriginalSourceType;
  16 import eu.etaxonomy.cdm.model.reference.Reference;
  17
  18 /**
  19  * @author pplitzner
  20  * @date Apr 13, 2016
  21  */
  22 public class SourceComparator  <T extends OriginalSourceBase> implements Comparator<T> {
  23
  24     @Override
  25     public int compare(T o1, T o2) {
  26
  27         //same and null compare, to be on the save side
  28         if (o1 == o2){
  29             return 0;
  30         }else if (o1 == null){
  31             return -1;
  32         }else if (o2 == null){
  33             return 1;
  34         }
  35
  36         boolean isDescriptionElementSource1 = false;
  37         boolean isDescriptionElementSource2 = false;
  38         if (o1.isInstanceOf(DescriptionElementSource.class)){
  39             isDescriptionElementSource1 = true;
  40         }
  41         if (o2.isInstanceOf(DescriptionElementSource.class)){
  42             isDescriptionElementSource2 = true;
  43         }
  44         if (isDescriptionElementSource1 != isDescriptionElementSource2){
  45             if (isDescriptionElementSource1){
  46                 return -1;
  47             }else{
  48                 return 1;
  49             }
  50         }
  51
  52         // the newly created should always be on top
  53         if (!o1.isPersited() && o2.isPersited()) {
  54             return -1;
  55         } else if(o1.isPersited() && !o2.isPersited()){
  56             return 1;
  57         }
  58
  59         // sort by type (Primary taxonomic > Primary Media > others
  60         // alphabetically by reference title cache)
  61         OriginalSourceType type1 = o1.getType();
  62         OriginalSourceType type2 = o2.getType();
  63         if (type1 == null){
  64             if (type2!=null){
  65                 return -1;
  66             }
  67         } else if (type2 == null){
  68             return 1;
  69         } else if(type1.equals(type2)){
  70             //continue with citation compare
  71         } else if (type1.equals(OriginalSourceType.PrimaryTaxonomicSource)){
  72             return 1;
  73         } else if (type2.equals(OriginalSourceType.PrimaryTaxonomicSource)){
  74             return -1;
  75         } else if (type1.equals(OriginalSourceType.PrimaryMediaSource)){
  76             return 1;
  77         } else if (type2.equals(OriginalSourceType.PrimaryMediaSource)){
  78             return -1;
  79         }
  80
  81         int result;
  82
  83         //sort by citation title cache if types are equal
  84         Reference citation1 = o1.getCitation();
  85         Reference citation2 = o2.getCitation();
  86         if(citation1!=null && citation2!=null){
  87             result = citation1.getTitleCache().compareTo(citation2.getTitleCache());
  88             if (result != 0){
  89                 return result;
  90             }
  91         }
  92
  93         //sort by created
  94         if(o2.getCreated()!=null && o1.getCreated()!=null){
  95             result = o1.getCreated().compareTo(o2.getCreated());
  96             if (result != 0){
  97                 return result;
  98             }
  99         }else if (o1.getCreated() == null){
 100             if (o2.getCreated() != null){
 101                 return -1;
 102             }
 103         }else if (o2.getCreated() == null){
 104             return 1;
 105         }
 106
 107         //default fallback
 108         return o1.getUuid().compareTo(o2.getUuid());
 109     }
 110 }