com.hp.hpl.jena.graph.query
Class Expression.Fixed

java.lang.Object
  com.hp.hpl.jena.graph.query.Expression.Base
      com.hp.hpl.jena.graph.query.Expression.Constant
          com.hp.hpl.jena.graph.query.Expression.Fixed

All Implemented Interfaces:

Expression

Enclosing interface:

Expression

public static class Expression.Fixed
extends Expression.Constant

A concrete class for representing fixed constants; each instance can hold a separate value and its valuator returns that value.

Nested Class Summary

Nested classes/interfaces inherited from interface com.hp.hpl.jena.graph.query.Expression

Expression.Application, Expression.Base, Expression.BoolConstant, Expression.Constant, Expression.Fixed, Expression.Util, Expression.Valof, Expression.Variable

Field Summary

Fields inherited from interface com.hp.hpl.jena.graph.query.Expression

FALSE, TRUE

Constructor Summary

Expression.Fixed(Object value)

Method Summary

Object	getValue() If this Expression is a literal, answer the value of that literal.
Valuator	prepare(VariableIndexes vi) Answer a Valuator which, when run with a set of index-to-value bindings, evaluates this expression in the light of the given variable-to-index bindings [ie as though the variables were bound to the corresponding values]
String	toString()

Methods inherited from class com.hp.hpl.jena.graph.query.Expression.Constant

isConstant

Methods inherited from class com.hp.hpl.jena.graph.query.Expression.Base

argCount, equals, getArg, getFun, getName, isApply, isVariable

Methods inherited from class java.lang.Object

getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

Expression.Fixed

public Expression.Fixed(Object value)

Method Detail

getValue

public Object getValue()

Description copied from interface: Expression

If this Expression is a literal, answer the value of that literal. Otherwise the behaviour is unspecified.

Specified by:

getValue in interface Expression

Specified by:

getValue in class Expression.Constant

prepare

public Valuator prepare(VariableIndexes vi)

Description copied from interface: Expression

Answer a Valuator which, when run with a set of index-to-value bindings, evaluates this expression in the light of the given variable-to-index bindings [ie as though the variables were bound to the corresponding values]

toString

public String toString()

Overrides:

toString in class Object