Package net.ontopia.topicmaps.query.impl.utils

Class HierarchyWalkerRulePredicate

java.lang.Object

net.ontopia.topicmaps.query.impl.utils.HierarchyWalkerRulePredicate

All Implemented Interfaces:

BasicPredicateIF, PredicateIF

public class HierarchyWalkerRulePredicate
extends Object
implements BasicPredicateIF

INTERNAL:

Field Summary

Fields

Modifier and Type	Field	Description
protected Variable	firstvar
protected Variable	midvar
protected RulePredicate	rule
protected Variable	secondvar
protected PredicateClause	wrapped

Constructor Summary

Constructors

Constructor	Description
HierarchyWalkerRulePredicate(RulePredicate rule, Variable firstvar, Variable secondvar, Variable midvar, PredicateClause wrapped)

Method Summary

Modifier and Type	Method	Description
int	getCost(boolean[] boundparam)	INTERNAL.
String	getName()	INTERNAL: Returns the name of the predicate.
String	getSignature()	INTERNAL: Returns a string representing the signature of the predicate.
QueryMatches	satisfy(QueryMatches extmatches, Object[] extarguments)

Methods inherited from class java.lang.Object

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

Field Details

rule

protected RulePredicate rule

firstvar

protected Variable firstvar

secondvar

protected Variable secondvar

midvar

protected Variable midvar

wrapped

protected PredicateClause wrapped

Constructor Details

HierarchyWalkerRulePredicate

public HierarchyWalkerRulePredicate(RulePredicate rule,
 Variable firstvar,
 Variable secondvar,
 Variable midvar,
 PredicateClause wrapped)

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()
                    throws InvalidQueryException

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

Throws:

InvalidQueryException

getCost

public int getCost(boolean[] boundparam)

Description copied from interface: PredicateIF

INTERNAL.

Specified by:

getCost in interface PredicateIF

satisfy

public QueryMatches satisfy(QueryMatches extmatches,
 Object[] extarguments)
                     throws InvalidQueryException

Specified by:

satisfy in interface BasicPredicateIF

Throws:

InvalidQueryException