net.ontopia.topicmaps.query.impl.basic

Class ItemIdentifierPredicate

java.lang.Object

net.ontopia.topicmaps.query.impl.basic.ItemIdentifierPredicate

All Implemented Interfaces:

BasicPredicateIF, PredicateIF

Direct Known Subclasses:

ItemIdentifierPredicate

public class ItemIdentifierPredicate
extends Object
implements BasicPredicateIF

INTERNAL: Implements the 'item-identifier(thing, locator)' predicate.

Field Summary

Fields

Modifier and Type	Field and Description
protected String	predicateName
protected TopicMapIF	topicmap

Constructor Summary

Constructors

Constructor and Description
ItemIdentifierPredicate(TopicMapIF topicmap, String predicateName)

Method Summary

Modifier and Type	Method and Description
int	getCost(boolean[] boundparams) INTERNAL.
String	getName() INTERNAL: Returns the name of the predicate.
String	getSignature() INTERNAL: Returns a string representing the signature of the predicate.
protected void	prefetchSources(QueryMatches matches, Object[] arguments, int objix)
QueryMatches	satisfy(QueryMatches matches, Object[] arguments)

Methods inherited from class java.lang.Object

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

Field Detail

topicmap

protected TopicMapIF topicmap

predicateName

protected String predicateName

Constructor Detail

ItemIdentifierPredicate

public ItemIdentifierPredicate(TopicMapIF topicmap,
                               String predicateName)

Method Detail

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.

Specified by:

getName in interface PredicateIF

getSignature

public String getSignature()

Description copied from interface: PredicateIF

INTERNAL: Returns a string representing the signature of the predicate. The string consists of a whitespace-separated list of arguments, where each argument is made up of tokens representing the type or cardinality of that argument.

The instance-of predicate would have a signature of "t t", while /= would have ". .", and in would have ". .+". For full details, see topicmaps.impl.utils.ArgumentValidator.

Specified by:

getSignature in interface PredicateIF

getCost

public int getCost(boolean[] boundparams)

Description copied from interface: PredicateIF

INTERNAL.

Specified by:

getCost in interface PredicateIF

satisfy

public QueryMatches satisfy(QueryMatches matches,
                            Object[] arguments)
                     throws InvalidQueryException

Specified by:

satisfy in interface BasicPredicateIF

Throws:

InvalidQueryException

prefetchSources

protected void prefetchSources(QueryMatches matches,
                               Object[] arguments,
                               int objix)