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

   1 package eu.etaxonomy.taxeditor.ui.section.description;
   2
   3
   4 import java.util.Comparator;
   5
   6 import eu.etaxonomy.cdm.model.common.OriginalSourceBase;
   7 import eu.etaxonomy.cdm.model.common.OriginalSourceType;
   8 import eu.etaxonomy.cdm.model.reference.Reference;
   9
  10 /**
  11  * @author pplitzner
  12  * @date Apr 13, 2016
  13  *
  14  */
  15 public class SourceComparator implements Comparator<OriginalSourceBase> {
  16     @Override
  17     public int compare(OriginalSourceBase o1, OriginalSourceBase o2) {
  18         int id1 = o1.getId();
  19         int id2 = o2.getId();
  20         OriginalSourceType type1 = o1.getType();
  21         OriginalSourceType type2 = o2.getType();
  22         Reference citation1 = o1.getCitation();
  23         Reference citation2 = o2.getCitation();
  24
  25         int result = 0;
  26
  27         // the newly created should always be on top
  28         if (id1 == 0){
  29             if(id2!=0) {
  30                 result = -1;
  31             }
  32             else{
  33                 result = 0;
  34             }
  35         } else if(id2==0){
  36             result = 1;
  37         }
  38
  39         // sort by type (Primary taxonomic > Primary Media > others
  40         // alphabetically by reference title cache)
  41         else if (type1 == null){
  42             if(type2==null){
  43                 result = 0;
  44             }
  45             else{
  46                 result = 1;
  47             }
  48         } else if (type2 == null){
  49             result = -1;
  50         } else if(type1.equals(type2)){
  51             result = 0;
  52         } else if (type1.equals(OriginalSourceType.PrimaryTaxonomicSource)){
  53             result = -1;
  54         } else if (type2.equals(OriginalSourceType.PrimaryTaxonomicSource)){
  55             result = 1;
  56         } else if (type1.equals(OriginalSourceType.PrimaryMediaSource)){
  57             result = -1;
  58         } else if (type2.equals(OriginalSourceType.PrimaryMediaSource)){
  59             result = 1;
  60         }
  61
  62         //sort by citation title cache if types are equal
  63         if (result == 0){
  64             if(citation1!=null && citation2!=null){
  65                 result = citation1.getTitleCache().compareTo(citation2.getTitleCache());
  66             }
  67
  68             if(o2.getCreated()!=null && o1.getCreated()!=null){
  69                 result = o2.getCreated().compareTo(o1.getCreated());
  70             }
  71             if (result == 0){
  72                 //default fallback
  73                 return o1.getId() - o2.getId();
  74             }
  75         }
  76         return result;
  77
  78
  79     }
  80 }