org.openrdf.sesame.sail.query
Class BooleanConstant

java.lang.Object
  org.openrdf.sesame.sail.query.BooleanConstant

All Implemented Interfaces:

BooleanExpr

public class BooleanConstant

extends Object

implements BooleanExpr

Field Summary

static BooleanConstant	FALSE
static BooleanConstant	TRUE

Constructor Summary

BooleanConstant(boolean value)

Method Summary

void	getVariables(Collection variables) Gets all variables that are used in this BooleanExpr.
boolean	isTrue(RdfSource rdfSource) Evaluates the boolean expression on the supplied RdfSource object.
String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

TRUE

public static final BooleanConstant TRUE

FALSE

public static final BooleanConstant FALSE

Constructor Detail

BooleanConstant

public BooleanConstant(boolean value)

Method Detail

isTrue

public boolean isTrue(RdfSource rdfSource)

Description copied from interface: BooleanExpr

Evaluates the boolean expression on the supplied RdfSource object.

Specified by:

isTrue in interface BooleanExpr

Parameters:

rdfSource - The RdfSource to evaluate the boolean expression against.

Returns:

the result of the evaluation.

getVariables

public void getVariables(Collection variables)

Description copied from interface: BooleanExpr

Gets all variables that are used in this BooleanExpr.

Specified by:

getVariables in interface BooleanExpr

Parameters:

variables - A Collection to add the Var objects to.

toString

public String toString()