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

Class QueryOptimizer.PumpPredicate

java.lang.Object

net.ontopia.topicmaps.query.impl.utils.QueryOptimizer.PumpPredicate

All Implemented Interfaces:

BasicPredicateIF, PredicateIF

Enclosing class:

QueryOptimizer

public static class QueryOptimizer.PumpPredicate
extends Object
implements BasicPredicateIF

Constructor Summary

Constructors

Constructor	Description
PumpPredicate(TopicMapIF topicmap, List subclauses, int limit, Variable valuevar, Variable objectvar, Object literal, boolean equals, boolean bigger)

Method Summary

Modifier and Type	Method	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.
QueryMatches	satisfy(QueryMatches input, Object[] arguments)

Methods inherited from class java.lang.Object

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

Constructor Detail

PumpPredicate

public PumpPredicate(TopicMapIF topicmap,
                     List subclauses,
                     int limit,
                     Variable valuevar,
                     Variable objectvar,
                     Object literal,
                     boolean equals,
                     boolean bigger)

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()
                    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[] boundparams)

Description copied from interface: PredicateIF

INTERNAL.

Specified by:

getCost in interface PredicateIF

satisfy

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

Specified by:

satisfy in interface BasicPredicateIF

Throws:

InvalidQueryException