bundles/org.simantics.modeling.ui/src/org/simantics/modeling/ui/viewpoint/VariableChildren.java

   1 package org.simantics.modeling.ui.viewpoint;\r
   2 \r
   3 import java.util.ArrayList;\r
   4 import java.util.Collection;\r
   5 import java.util.Collections;\r
   6 import java.util.Set;\r
   7 \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 \r
  12 /**\r
  13  * @author Tuukka Lehtonen\r
  14  */\r
  15 public class VariableChildren {\r
  16 \r
  17     /**\r
  18      * @param graph\r
  19      * @param variables\r
  20      * @param requiredClassification\r
  21      * @return\r
  22      * @throws DatabaseException\r
  23      */\r
  24     public static Collection<Variable> filterByClassification(ReadGraph graph, Collection<Variable> variables, String requiredClassification) throws DatabaseException {\r
  25         if (variables.isEmpty())\r
  26             return Collections.emptyList();\r
  27         Collection<Variable> result = null;\r
  28         for (Variable v : variables) {\r
  29             //System.out.println("child : " + v.getURI(graph));\r
  30             Set<String> classifications = v.getClassifications(graph);\r
  31             //System.out.println("classifications: " + classifications);\r
  32             if (classifications != null && classifications.contains(requiredClassification)) {\r
  33                 if (result == null)\r
  34                     result = new ArrayList<Variable>(variables.size());\r
  35                 result.add(v);\r
  36             }\r
  37         }\r
  38         return result != null ? result : Collections.<Variable>emptyList();\r
  39     }\r
  40 \r
  41 }\r