com.hp.hpl.jena.graph.query
Class Matcher

java.lang.Object
  com.hp.hpl.jena.graph.query.Matcher

public abstract class Matcher
extends Object

A Matcher knows how to match itself against a concrete triple (the triple to be matched) and a domain (of bindings to check and extend). It is part of the improved-we-hope PatternStage code.

Author:

kers

Field Summary

static Matcher

always This matcher always answers true and doesn't even look at the domain, never mind update it.

Constructor Summary

Matcher()

Method Summary

abstract boolean

match(Domain d, Triple t) Answer true iff we match the triple t given the bindings in d, updating those bindings if appropriate; the bindings may be updated even if the match answers false.

Methods inherited from class java.lang.Object

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

Field Detail

always

public static final Matcher always

This matcher always answers true and doesn't even look at the domain, never mind update it.

Constructor Detail

Matcher

public Matcher()

Method Detail

match

public abstract boolean match(Domain d,
                              Triple t)

Answer true iff we match the triple t given the bindings in d, updating those bindings if appropriate; the bindings may be updated even if the match answers false.