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

Class ValuePredicate

java.lang.Object

net.ontopia.topicmaps.query.impl.basic.ValuePredicate

All Implemented Interfaces:

BasicPredicateIF, PredicateIF

Direct Known Subclasses:

ValuePredicate

public class ValuePredicate
extends Object
implements BasicPredicateIF

INTERNAL: Implements the 'value' predicate.

Field Summary

Fields

Modifier and Type	Field	Description
protected NameIndexIF	nameindex
protected OccurrenceIndexIF	occindex
protected TopicMapIF	topicmap

Constructor Summary

Constructors

Constructor	Description
ValuePredicate(TopicMapIF topicmap)

Method Summary

Modifier and Type	Method	Description
int	getCost(boolean[] boundparams)	INTERNAL.
String	getName()	INTERNAL: Returns the name of the predicate.
protected Object[]	getObjects()
String	getSignature()	INTERNAL: Returns a string representing the signature of the predicate.
protected void	prefetchValue(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 Details

topicmap

protected TopicMapIF topicmap

nameindex

protected NameIndexIF nameindex

occindex

protected OccurrenceIndexIF occindex

Constructor Details

ValuePredicate

public ValuePredicate(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.

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

prefetchValue

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

getObjects

protected Object[] getObjects()