bundles/org.simantics.document.linking.ui/src/org/simantics/document/linking/report/evaluator/Or.java

   1 package org.simantics.document.linking.report.evaluator;
   2
   3 import java.util.Collections;
   4 import java.util.List;
   5 import java.util.Map;
   6
   7 import org.eclipse.jface.resource.ImageDescriptor;
   8 import org.simantics.db.ReadGraph;
   9 import org.simantics.db.exception.DatabaseException;
  10 import org.simantics.db.layer0.variable.Variable;
  11 import org.simantics.document.linking.Activator;
  12 import org.simantics.document.linking.ontology.DocumentLink;
  13 import org.simantics.document.linking.report.DocumentLine;
  14 import org.simantics.objmap.graph.annotations.OrderedSetType;
  15
  16
  17 /**
  18  * Or node returns the first non null value of children.
  19  *
  20  * @author Marko Luukkainen <marko.luukkainen@vtt.fi>
  21  *
  22  */
  23
  24 @OrderedSetType(DocumentLink.URIs.EvaluatorTree_Or)
  25 public class Or extends EvaluatorNode{
  26
  27
  28
  29         @Override
  30         public String getValue(ReadGraph graph, Variable variable, Map<Object, Object> context) throws DatabaseException {
  31
  32                 for (int i = 0 ; i < children.size(); i++) {
  33                         String s =  children.get(i).getValue(graph, variable, context);
  34                         if (s != null && s.length() > 0)
  35                                 return s;
  36                 }
  37
  38                 return null;
  39         }
  40
  41         @Override
  42         public List<DocumentLine> getLines(ReadGraph graph,     Variable variable, Map<Object, Object> context) throws DatabaseException {
  43                 for (int i = 0 ; i < children.size(); i++) {
  44                         List<DocumentLine> list = children.get(i).getLines(graph, variable, context);
  45                         if (list.size() > 0)
  46                                 return list;
  47                 }
  48                 return Collections.emptyList();
  49         }
  50
  51         @Override
  52         public String toString() {
  53                 return "or";
  54         }
  55
  56         @Override
  57         public EvaluatorItem copy() {
  58                 Or or = new Or();
  59                 copyChildren(or);
  60                 return or;
  61         }
  62
  63         @Override
  64         public ImageDescriptor getImage() {
  65                 return Activator.imageDescriptorFromPlugin("com.famfamfam.silk", "icons/text_list_numbers.png");
  66         }
  67
  68
  69
  70 }