private void updatePropertySet() {
   PropertyDescriptorComposite compositeProperties =
       getCompositeProperties(underlyingEventType, underlyingMapType);
   propertyNames = compositeProperties.getPropertyNames();
   propertyDescriptorMap = compositeProperties.getPropertyDescriptorMap();
   propertyDesc = compositeProperties.getDescriptors();
   numPropertiesUnderlyingType = underlyingEventType.getPropertyDescriptors().length;
 }
  private static PropertyDescriptorComposite getCompositeProperties(
      EventType underlyingEventType, MapEventType underlyingMapType) {
    List<String> propertyNames = new ArrayList<String>();
    propertyNames.addAll(Arrays.asList(underlyingEventType.getPropertyNames()));
    propertyNames.addAll(Arrays.asList(underlyingMapType.getPropertyNames()));
    String[] propertyNamesArr = propertyNames.toArray(new String[propertyNames.size()]);

    List<EventPropertyDescriptor> propertyDesc = new ArrayList<EventPropertyDescriptor>();
    HashMap<String, EventPropertyDescriptor> propertyDescriptorMap =
        new HashMap<String, EventPropertyDescriptor>();
    for (EventPropertyDescriptor eventProperty : underlyingEventType.getPropertyDescriptors()) {
      propertyDesc.add(eventProperty);
      propertyDescriptorMap.put(eventProperty.getPropertyName(), eventProperty);
    }
    for (EventPropertyDescriptor mapProperty : underlyingMapType.getPropertyDescriptors()) {
      propertyDesc.add(mapProperty);
      propertyDescriptorMap.put(mapProperty.getPropertyName(), mapProperty);
    }
    EventPropertyDescriptor[] propertyDescArr =
        propertyDesc.toArray(new EventPropertyDescriptor[propertyDesc.size()]);
    return new PropertyDescriptorComposite(
        propertyDescriptorMap, propertyNamesArr, propertyDescArr);
  }
 private void checkInitProperties() {
   if (numPropertiesUnderlyingType != underlyingEventType.getPropertyDescriptors().length) {
     updatePropertySet();
   }
 }
  private void runObjectArrInheritanceAssertion(EPServiceProvider epService) {
    SupportUpdateListener listeners[] = new SupportUpdateListener[5];
    String[] statements = {
      "select base as vbase, sub1? as v1, sub2? as v2, suba? as va, subb? as vb from RootEvent", // 0
      "select base as vbase, sub1 as v1, sub2? as v2, suba? as va, subb? as vb from Sub1Event", // 1
      "select base as vbase, sub1? as v1, sub2 as v2, suba? as va, subb? as vb from Sub2Event", // 2
      "select base as vbase, sub1 as v1, sub2? as v2, suba as va, subb? as vb from SubAEvent", // 3
      "select base as vbase, sub1? as v1, sub2? as v2, suba? as va, subb as vb from SubBEvent" // 4
    };
    for (int i = 0; i < statements.length; i++) {
      EPStatement statement = epService.getEPAdministrator().createEPL(statements[i]);
      listeners[i] = new SupportUpdateListener();
      statement.addListener(listeners[i]);
    }
    String[] fields = "vbase,v1,v2,va,vb".split(",");

    EventType type = epService.getEPAdministrator().getConfiguration().getEventType("SubAEvent");
    assertEquals("base", type.getPropertyDescriptors()[0].getPropertyName());
    assertEquals("sub1", type.getPropertyDescriptors()[1].getPropertyName());
    assertEquals("suba", type.getPropertyDescriptors()[2].getPropertyName());
    assertEquals(3, type.getPropertyDescriptors().length);

    type = epService.getEPAdministrator().getConfiguration().getEventType("SubBEvent");
    assertEquals("[base, sub1, suba, subb]", Arrays.toString(type.getPropertyNames()));
    assertEquals(4, type.getPropertyDescriptors().length);

    type = epService.getEPAdministrator().getConfiguration().getEventType("Sub1Event");
    assertEquals("[base, sub1]", Arrays.toString(type.getPropertyNames()));
    assertEquals(2, type.getPropertyDescriptors().length);

    type = epService.getEPAdministrator().getConfiguration().getEventType("Sub2Event");
    assertEquals("[base, sub2]", Arrays.toString(type.getPropertyNames()));
    assertEquals(2, type.getPropertyDescriptors().length);

    epService
        .getEPRuntime()
        .sendEvent(new Object[] {"a", "b", "x"}, "SubAEvent"); // base, sub1, suba
    EPAssertionUtil.assertProps(
        listeners[0].assertOneGetNewAndReset(), fields, new Object[] {"a", "b", null, "x", null});
    assertFalse(listeners[2].isInvoked() || listeners[4].isInvoked());
    EPAssertionUtil.assertProps(
        listeners[1].assertOneGetNewAndReset(), fields, new Object[] {"a", "b", null, "x", null});
    EPAssertionUtil.assertProps(
        listeners[3].assertOneGetNewAndReset(), fields, new Object[] {"a", "b", null, "x", null});

    epService.getEPRuntime().sendEvent(new Object[] {"f1", "f2", "f4"}, "SubAEvent");
    EPAssertionUtil.assertProps(
        listeners[0].assertOneGetNewAndReset(),
        fields,
        new Object[] {"f1", "f2", null, "f4", null});
    assertFalse(listeners[2].isInvoked() || listeners[4].isInvoked());
    EPAssertionUtil.assertProps(
        listeners[1].assertOneGetNewAndReset(),
        fields,
        new Object[] {"f1", "f2", null, "f4", null});
    EPAssertionUtil.assertProps(
        listeners[3].assertOneGetNewAndReset(),
        fields,
        new Object[] {"f1", "f2", null, "f4", null});

    epService.getEPRuntime().sendEvent(new Object[] {"XBASE", "X1", "X2", "XY"}, "SubBEvent");
    Object[] values = new Object[] {"XBASE", "X1", null, "X2", "XY"};
    EPAssertionUtil.assertProps(listeners[0].assertOneGetNewAndReset(), fields, values);
    assertFalse(listeners[2].isInvoked());
    EPAssertionUtil.assertProps(listeners[1].assertOneGetNewAndReset(), fields, values);
    EPAssertionUtil.assertProps(listeners[3].assertOneGetNewAndReset(), fields, values);
    EPAssertionUtil.assertProps(listeners[4].assertOneGetNewAndReset(), fields, values);

    epService.getEPRuntime().sendEvent(new Object[] {"YBASE", "Y1"}, "Sub1Event");
    values = new Object[] {"YBASE", "Y1", null, null, null};
    EPAssertionUtil.assertProps(listeners[0].assertOneGetNewAndReset(), fields, values);
    assertFalse(listeners[2].isInvoked() || listeners[3].isInvoked() || listeners[4].isInvoked());
    EPAssertionUtil.assertProps(listeners[1].assertOneGetNewAndReset(), fields, values);

    epService.getEPRuntime().sendEvent(new Object[] {"YBASE", "Y2"}, "Sub2Event");
    values = new Object[] {"YBASE", null, "Y2", null, null};
    EPAssertionUtil.assertProps(listeners[0].assertOneGetNewAndReset(), fields, values);
    assertFalse(listeners[1].isInvoked() || listeners[3].isInvoked() || listeners[4].isInvoked());
    EPAssertionUtil.assertProps(listeners[2].assertOneGetNewAndReset(), fields, values);

    epService.getEPRuntime().sendEvent(new Object[] {"ZBASE"}, "RootEvent");
    values = new Object[] {"ZBASE", null, null, null, null};
    EPAssertionUtil.assertProps(listeners[0].assertOneGetNewAndReset(), fields, values);
    assertFalse(
        listeners[1].isInvoked()
            || listeners[2].isInvoked()
            || listeners[3].isInvoked()
            || listeners[4].isInvoked());

    // try property not available
    try {
      epService.getEPAdministrator().createEPL("select suba from Sub1Event");
      fail();
    } catch (EPStatementException ex) {
      assertEquals(
          "Error starting statement: Failed to validate select-clause expression 'suba': Property named 'suba' is not valid in any stream (did you mean 'sub1'?) [select suba from Sub1Event]",
          ex.getMessage());
    }

    // try supertype not exists
    try {
      epService
          .getEPAdministrator()
          .getConfiguration()
          .addEventType("Sub1Event", makeMap(""), new String[] {"doodle"});
      fail();
    } catch (ConfigurationException ex) {
      assertEquals("Supertype by name 'doodle' could not be found", ex.getMessage());
    }
  }