tests/org.simantics.db.tests/src/org/simantics/db/tests/common/Writes.java

   1 package org.simantics.db.tests.common;
   2
   3 import org.simantics.databoard.Bindings;
   4 import org.simantics.db.Resource;
   5 import org.simantics.db.WriteGraph;
   6 import org.simantics.db.common.request.WriteResultRequest;
   7 import org.simantics.db.exception.DatabaseException;
   8 import org.simantics.db.request.WriteResult;
   9 import org.simantics.layer0.Layer0;
  10
  11 public class Writes {
  12
  13         public static WriteResult<Resource> newEmpty() throws DatabaseException {
  14                 return new WriteResultRequest<Resource>() {
  15                     @Override
  16                     public Resource perform(WriteGraph g) throws DatabaseException {
  17                         return g.newResource();
  18                     }
  19                 };
  20         }
  21
  22     public static Resource named(WriteGraph graph, String name) throws DatabaseException {
  23
  24         Layer0 b = Layer0.getInstance(graph);
  25
  26         Resource result = graph.newResource();
  27         graph.claim(result, b.InstanceOf, null, b.Entity);
  28         graph.claimLiteral(result, b.HasName, name, Bindings.STRING);
  29
  30         return result;
  31
  32     }
  33
  34     public static Resource assertion(WriteGraph graph, Resource predicate, Resource object) throws DatabaseException {
  35
  36         Layer0 b = Layer0.getInstance(graph);
  37
  38         // Assert nonfunctional items
  39         Resource ass = graph.newResource();
  40         graph.claim(ass, b.InstanceOf, null,  b.Assertion);
  41         graph.claim(ass, b.HasPredicate, predicate);
  42         graph.claim(ass, b.HasObject, object);
  43
  44         return ass;
  45
  46     }
  47
  48     public static Resource string(WriteGraph graph, String string) throws DatabaseException {
  49
  50         Layer0 b = Layer0.getInstance(graph);
  51
  52         // Assert nonfunctional items
  53         Resource result = graph.newResource();
  54         graph.claim(result, b.InstanceOf, null,  b.String);
  55         graph.claimValue(result, string);
  56
  57         return result;
  58
  59     }
  60
  61 }