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

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

All Implemented Interfaces:

Valuator

public class SlotValuator
extends Object
implements Valuator

A SlotValuator evaluates to a specific slot in the index values bindings.

Author:

hedgehog

Constructor Summary

SlotValuator(int index)
Initialise this SlotValuator with the index to use for lookup.

Method Summary

boolean	evalBool(IndexValues iv) Answer the primitive boolean value of the indexth element of the index value bindings, which must be a Boolean value.
Object	evalObject(IndexValues iv) Answer the value of the indexth element of the index values bindings.

Methods inherited from class java.lang.Object

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

Constructor Detail

SlotValuator

public SlotValuator(int index)

Initialise this SlotValuator with the index to use for lookup.

Method Detail

evalObject

public Object evalObject(IndexValues iv)

Answer the value of the indexth element of the index values bindings.

Specified by:

evalObject in interface Valuator

Parameters:

iv - the mapping from variable (indexes) to values

evalBool

public boolean evalBool(IndexValues iv)

Answer the primitive boolean value of the indexth element of the index value bindings, which must be a Boolean value.

Specified by:

evalBool in interface Valuator

Parameters:

iv - the mapping from variable (indexes) to values