private boolean containInstance(Instance sel, Slot slot, Instance instance) {
if (itsInstance == null) return false;
Collection instances = sel.getOwnSlotValues(slot);
Iterator i = instances.iterator();
while (i.hasNext()) {
Instance tmpInstance = (Instance) i.next();
if (tmpInstance.equals(instance)) return true;
}
return false;
}
private boolean testInstance(int testIndex, Instance instance, Slot slot) {
String value;
if (specification.getValue() == null) return false;
if (((String) specification.getValue()).length() < 1) return false;
value = instance.getBrowserText();
return testInstance(testIndex, instance, slot, value);
}
/** Main test subroutine for Instance slot. */
private boolean testInstance(int testIndex, Instance instance, Slot slot, String value) {
boolean testResult = false;
if (instance == null) return testResult;
if (slot == null) {
return false;
}
Instance tmpInstance = (Instance) instance.getOwnSlotValue(slot);
if (tmpInstance == null && testIndex == 0) return false;
if (tmpInstance == null && testIndex == 1) return true;
switch (testIndex) {
case 0: // is equal to
return containInstance(instance, slot, itsInstance);
case 1: // is not equal to
return (!containInstance(instance, slot, itsInstance));
default:
break;
}
return testResult;
}