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

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