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

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

All Implemented Interfaces:

Expression

Enclosing interface:

Expression

public abstract static class Expression.Variable
extends Expression.Base

An abstract base class for variable nodes; subclasses implement getName().

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.Variable()

Method Summary

abstract String	getName() If this Expression is a variable, answer a [non-null] String which is its name.
boolean	isVariable() Answer true iff this Expression represents a variable.

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

argCount, equals, getArg, getFun, getValue, isApply, isConstant

Methods inherited from class java.lang.Object

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

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

prepare

Constructor Detail

Expression.Variable

public Expression.Variable()

Method Detail

isVariable

public boolean isVariable()

Description copied from interface: Expression

Answer true iff this Expression represents a variable.

Specified by:

isVariable in interface Expression

Overrides:

isVariable in class Expression.Base

getName

public abstract String getName()

Description copied from interface: Expression

If this Expression is a variable, answer a [non-null] String which is its name. Otherwise the behaviour is unspecified.

Specified by:

getName in interface Expression

Overrides:

getName in class Expression.Base