net.ontopia.topicmaps.query.parser

Interface PredicateFactoryIF

All Known Implementing Classes:

PredicateFactory, PredicateFactory

public interface PredicateFactoryIF

INTERNAL: Implemented by classes which can create PredicateIF objects.

Method Summary

Modifier and Type	Method and Description
ModuleIF	createModule(String uri) INTERNAL: Creates a module instance for the specified URI.
PredicateIF	createPredicate(ParsedRule rule) INTERNAL: Creates a rule predicate for the parsed rule.
PredicateIF	createPredicate(String name) INTERNAL: Looks up a built-in predicate by its name.
PredicateIF	createPredicate(TopicIF type, boolean assoc) INTERNAL: Creates a dynamic predicate for the given topic; either an association predicate or an occurrence predicate, depending on the value of the assoc parameter.
boolean	isBuiltInPredicate(String name) INTERNAL: Used to find out if the given predicate name is the name of a built-in predicate.

Method Detail

createPredicate

PredicateIF createPredicate(String name)

INTERNAL: Looks up a built-in predicate by its name.

createPredicate

PredicateIF createPredicate(ParsedRule rule)

INTERNAL: Creates a rule predicate for the parsed rule.

createPredicate

PredicateIF createPredicate(TopicIF type,
                            boolean assoc)

INTERNAL: Creates a dynamic predicate for the given topic; either an association predicate or an occurrence predicate, depending on the value of the assoc parameter.

createModule

ModuleIF createModule(String uri)

INTERNAL: Creates a module instance for the specified URI. If the predicate factory does not recognize the URI null is returned.

isBuiltInPredicate

boolean isBuiltInPredicate(String name)

INTERNAL: Used to find out if the given predicate name is the name of a built-in predicate. Needed for error checking, see bug #1082.