bundles/org.simantics.document.linking.ui/src/org/simantics/document/linking/report/templates/PathComparator.java

   1 package org.simantics.document.linking.report.templates;
   2
   3 import java.util.Comparator;
   4 import java.util.List;
   5
   6 import org.simantics.db.ReadGraph;
   7 import org.simantics.db.Resource;
   8 import org.simantics.db.common.utils.NameUtils;
   9 import org.simantics.db.exception.DatabaseException;
  10 import org.simantics.utils.strings.AlphanumComparator;
  11
  12 public class PathComparator implements Comparator<List<Resource>>{
  13
  14         private ReadGraph graph;
  15
  16         public PathComparator(ReadGraph graph) {
  17                 this.graph = graph;
  18         }
  19
  20         @Override
  21         public int compare(List<Resource> o1, List<Resource> o2) {
  22                 int common = Math.min(o1.size(), o2.size());
  23                 for (int i = 0; i < common; i++) {
  24                         if (o1.get(i).equals(o2.get(i)))
  25                                 continue;
  26                         try {
  27                                 Resource r1 = o1.get(i);
  28                                 Resource r2 = o2.get(i);
  29                                 String l1 = getText(r1);
  30                                 String l2 = getText(r2);
  31                                 int c = AlphanumComparator.COMPARATOR.compare(l1, l2);
  32                                 if (c == 0) {
  33                                         if (r1.getResourceId() > r2.getResourceId())
  34                                                 return 1;
  35                                         if (r1.getResourceId() < r2.getResourceId())
  36                                                 return -1;
  37                                         return 0;
  38                                 }
  39                                 return c;
  40                         } catch (DatabaseException e) {
  41                                 return 0;
  42                         }
  43                 }
  44                 return o1.size() - o2.size();
  45         }
  46
  47         public String getText(Resource r) throws DatabaseException {
  48                 String l1 = NameUtils.getSafeLabel(graph, r);
  49                 if (l1.length() == 0)
  50                         l1 = NameUtils.getSafeName(graph, r);
  51                 return l1;
  52         }
  53
  54 }