public static Ref getQueryReferences(Query query, QueryResults results) {
    if (results.size() == 0) {
      return null;
    }
    Map<String, Object> map = new HashMap<String, Object>();
    org.drools.QueryResults inner = ((NativeQueryResults) results).getResults();
    Declaration[] params = inner.getParameters();

    for (MyMapReferenceEntryType entry : query.getReferences()) {
      Declaration dec = params[entry.getKey()];
      map.put(entry.getValue(), inner.get(0).get(dec.getIdentifier()));
    }

    Ref ref = new Ref();
    ref.setReferences(MapArgsAdapterHelper.marshal(map));

    return ref;
  }
예제 #2
0
  @Test
  public void testQuery() throws Exception {
    String str = "";
    str += "package org.drools.test  \n";
    str += "import org.drools.Cheese \n";
    str += "query cheeses \n";
    str += "    stilton : Cheese(type == 'stilton') \n";
    str += "    cheddar : Cheese(type == 'cheddar', price == stilton.price) \n";
    str += "end\n";

    KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
    kbuilder.add(ResourceFactory.newByteArrayResource(str.getBytes()), ResourceType.DRL);

    if (kbuilder.hasErrors()) {
      fail(kbuilder.getErrors().toString());
    }

    KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
    kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());

    kbase = SerializationHelper.serializeObject(kbase);

    StatelessKnowledgeSession ksession = kbase.newStatelessKnowledgeSession();
    Cheese stilton1 = new Cheese("stilton", 1);
    Cheese cheddar1 = new Cheese("cheddar", 1);
    Cheese stilton2 = new Cheese("stilton", 2);
    Cheese cheddar2 = new Cheese("cheddar", 2);
    Cheese stilton3 = new Cheese("stilton", 3);
    Cheese cheddar3 = new Cheese("cheddar", 3);

    Set set = new HashSet();
    List list = new ArrayList();
    list.add(stilton1);
    list.add(cheddar1);
    set.add(list);

    list = new ArrayList();
    list.add(stilton2);
    list.add(cheddar2);
    set.add(list);

    list = new ArrayList();
    list.add(stilton3);
    list.add(cheddar3);
    set.add(list);

    List<Command> cmds = new ArrayList<Command>();
    cmds.add(CommandFactory.newInsert(stilton1));
    cmds.add(CommandFactory.newInsert(stilton2));
    cmds.add(CommandFactory.newInsert(stilton3));
    cmds.add(CommandFactory.newInsert(cheddar1));
    cmds.add(CommandFactory.newInsert(cheddar2));
    cmds.add(CommandFactory.newInsert(cheddar3));

    cmds.add(CommandFactory.newQuery("cheeses", "cheeses"));

    ExecutionResults batchResult =
        (ExecutionResults) ksession.execute(CommandFactory.newBatchExecution(cmds));

    org.drools.runtime.rule.QueryResults results =
        (org.drools.runtime.rule.QueryResults) batchResult.getValue("cheeses");
    assertEquals(3, results.size());
    assertEquals(2, results.getIdentifiers().length);
    Set newSet = new HashSet();
    for (org.drools.runtime.rule.QueryResultsRow result : results) {
      list = new ArrayList();
      list.add(result.get("stilton"));
      list.add(result.get("cheddar"));
      newSet.add(list);
    }
    assertEquals(set, newSet);
  }