org.simantics.interop.update/src/org/simantics/interop/update/model/PropertyChange.java

   1 package org.simantics.interop.update.model;
   2
   3 import org.simantics.db.Resource;
   4 import org.simantics.db.Statement;
   5 import org.simantics.db.WriteGraph;
   6 import org.simantics.db.exception.DatabaseException;
   7 import org.simantics.interop.test.GraphChanges;
   8 import org.simantics.utils.datastructures.Pair;
   9
  10 public class PropertyChange {
  11         protected GraphChanges changes;
  12         protected Pair<Statement, Statement> pair;
  13         protected boolean applied = false;
  14         protected boolean selected = false;
  15         protected boolean visible = true;
  16
  17
  18         public PropertyChange(GraphChanges changes, Statement first, Statement second) {
  19                 this.pair = new Pair<Statement, Statement>(first, second);
  20                 this.changes = changes;
  21         }
  22
  23         public PropertyChange(GraphChanges changes, Pair<Statement, Statement> change) {
  24                 this.pair = change;
  25                 this.changes = changes;
  26         }
  27
  28         public Statement getFirst() {
  29                 return pair.first;
  30         }
  31
  32         public Statement getSecond() {
  33                 return pair.second;
  34         }
  35
  36         public GraphChanges getChanges() {
  37                 return changes;
  38         }
  39
  40         @Override
  41         public int hashCode() {
  42                 return pair.hashCode();
  43         }
  44
  45         @Override
  46         public boolean equals(Object obj) {
  47                 if (obj == null)
  48                         return false;
  49                 if (obj.getClass() != this.getClass())
  50                         return false;
  51                 PropertyChange c = (PropertyChange)obj;
  52                 return pair.equals(c.pair);
  53         }
  54
  55         public void apply(WriteGraph graph) throws DatabaseException {
  56                 if (applied)
  57                         return;
  58                 if (pair.second == null) {
  59                         graph.deny(pair.first);
  60                         return;
  61                 }
  62                 Resource s = changes.getComparable().getLeft(pair.second.getSubject());
  63                 //Resource s = pair.first.getSubject();
  64                 Resource pred = pair.second.getPredicate();
  65                 if (graph.hasValue(pair.second.getObject())) {
  66                         Object value = graph.getValue(pair.second.getObject());
  67                         graph.claimLiteral(s, pred, value);
  68                 } else {
  69                         graph.deny(s,pred);
  70                 }
  71                 applied = true;
  72
  73         }
  74
  75         public boolean select(boolean select) {
  76                 if (applied)
  77                         return false;
  78                 this.selected = select;
  79                 return true;
  80         }
  81
  82
  83         public boolean selected() {
  84                 return selected;
  85         }
  86
  87         public boolean applied() {
  88                 return applied;
  89         }
  90
  91         public boolean isVisible() {
  92                 return visible;
  93         }
  94
  95         public void setVisible(boolean visible) {
  96                 this.visible = visible;
  97         }
  98
  99 }