org.simantics.interop/src/org/simantics/interop/test/NameComparator.java

   1 package org.simantics.interop.test;
   2
   3 import org.simantics.databoard.Bindings;
   4 import org.simantics.db.ReadGraph;
   5 import org.simantics.db.Resource;
   6 import org.simantics.db.exception.DatabaseException;
   7 import org.simantics.layer0.Layer0;
   8
   9 /**
  10  * Object comparator that uses type and name of objects to check if objects are comparable.
  11  * If objects have no name, compare returns unreliable as result.
  12  *
  13  *
  14  * Difference value is amount of properties that have different values.
  15  *
  16  * @author Marko Luukkainen <marko.luukkainen@vtt.fi>
  17  *
  18  */
  19 public class NameComparator extends TypeComparator {
  20
  21         @Override
  22         public int compare(ReadGraph g, Resource o1, Resource o2)
  23                         throws DatabaseException {
  24                 if (!compareType(g,o1, o2)) {
  25                         return NO_MATCH;
  26                 }
  27                 if (hasName(g, o1, o2)) {
  28                         if(!compareName(g, o1, o2))
  29                                 return NO_MATCH;
  30                         return propsDiffCount(g,o1, o2);
  31                 }
  32                 return UNDECISIVE;
  33
  34         }
  35
  36         protected boolean compareName(ReadGraph g, Resource o1, Resource o2) throws DatabaseException {
  37                 Layer0 l0 = Layer0.getInstance(g);
  38                 String n1 = g.getPossibleRelatedValue(o1, l0.HasName, Bindings.STRING);
  39                 String n2 = g.getPossibleRelatedValue(o2, l0.HasName, Bindings.STRING);
  40                 if (n1 != null && n2 != null)
  41                         return n1.equals(n2);
  42                 if (n1 == null && n2 == null)
  43                         return true;
  44                 return false;
  45
  46         }
  47
  48         protected boolean hasName(ReadGraph g, Resource o1, Resource o2) throws DatabaseException {
  49                 Layer0 l0 = Layer0.getInstance(g);
  50                 String n1 = g.getPossibleRelatedValue(o1, l0.HasName, Bindings.STRING);
  51                 String n2 = g.getPossibleRelatedValue(o2, l0.HasName, Bindings.STRING);
  52                 if (n1 != null && n2 != null)
  53                         return true;
  54                 return false;
  55
  56         }
  57
  58 }