Package net.ontopia.topicmaps.query.impl.basic

Class InstanceOfPredicate

java.lang.Object

net.ontopia.topicmaps.query.impl.basic.AbstractInstanceOfPredicate

net.ontopia.topicmaps.query.impl.basic.InstanceOfPredicate

All Implemented Interfaces:

BasicPredicateIF, PredicateIF

Direct Known Subclasses:

InstanceOfPredicate

public class InstanceOfPredicate
extends AbstractInstanceOfPredicate

INTERNAL: Implements the 'instance-of' predicate using the indexes.

Field Summary

Fields

Modifier and Type	Field	Description
protected Map	superTypeCache
protected TypeHierarchyUtils	typeutils

Fields inherited from class net.ontopia.topicmaps.query.impl.basic.AbstractInstanceOfPredicate

index, topicmap

Constructor Summary

Constructors

Constructor	Description
InstanceOfPredicate(TopicMapIF topicmap)

Method Summary

Modifier and Type	Method	Description
protected Collection	getClasses(TopicIF instance)	INTERNAL: Should return all applicable types of the given topic.
protected Collection	getInstances(TopicIF klass)	INTERNAL: Should return all instances of the topic, as seen by the specific predicate.
String	getName()	INTERNAL: Returns the name of the predicate.
protected Collection	getSubtypes(TopicIF type)
protected Collection	getSupertypes(TopicIF type)	INTERNAL: Should return all supertypes of the given class, including the class itself.
protected Collection	getTypes()	INTERNAL: Should return all topic types, as seen by the specific predicate.
protected void	start()	INTERNAL: Called before the evaluation of a new query, to allow resetting of internal caches etc.

Methods inherited from class net.ontopia.topicmaps.query.impl.basic.AbstractInstanceOfPredicate

getCost, getDirectInstances, getSignature, satisfy

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

typeutils

protected TypeHierarchyUtils typeutils

superTypeCache

protected Map superTypeCache

Constructor Details

InstanceOfPredicate

public InstanceOfPredicate(TopicMapIF topicmap)

Method Details

getName

public String getName()

Description copied from interface: PredicateIF

INTERNAL: Returns the name of the predicate. This will usually be the name of the predicate within its module ('instance-of', '/=', 'starts-with'), but some virtual predicates cannot be reached from the syntax and may return names that will not parse.

start

protected void start()

Description copied from class: AbstractInstanceOfPredicate

INTERNAL: Called before the evaluation of a new query, to allow resetting of internal caches etc.

Specified by:

start in class AbstractInstanceOfPredicate

getClasses

protected Collection getClasses(TopicIF instance)

Description copied from class: AbstractInstanceOfPredicate

INTERNAL: Should return all applicable types of the given topic. In 'instance-of' this includes the supertypes of the topic's types.

Specified by:

getClasses in class AbstractInstanceOfPredicate

getInstances

protected Collection getInstances(TopicIF klass)

Description copied from class: AbstractInstanceOfPredicate

INTERNAL: Should return all instances of the topic, as seen by the specific predicate.

Specified by:

getInstances in class AbstractInstanceOfPredicate

getTypes

protected Collection getTypes()

Description copied from class: AbstractInstanceOfPredicate

INTERNAL: Should return all topic types, as seen by the specific predicate.

Specified by:

getTypes in class AbstractInstanceOfPredicate

getSupertypes

protected Collection getSupertypes(TopicIF type)

Description copied from class: AbstractInstanceOfPredicate

INTERNAL: Should return all supertypes of the given class, including the class itself. In 'direct-instance-of' this should just be the class itself.

Specified by:

getSupertypes in class AbstractInstanceOfPredicate

getSubtypes

protected Collection getSubtypes(TopicIF type)