org.openrdf.sesame.sail.query
Class Not

java.lang.Object
  org.openrdf.sesame.sail.query.Not

All Implemented Interfaces:

BooleanExpr

public class Not

extends Object

implements BooleanExpr

Constructor Summary

Not(BooleanExpr arg)

Method Summary

BooleanExpr	getArg()
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

Constructor Detail

Not

public Not(BooleanExpr arg)

Method Detail

getArg

public BooleanExpr getArg()

isTrue

public boolean isTrue(RdfSource rdfSource)
               throws BooleanExprEvaluationException,
                      SailQueryException

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.

Throws:

BooleanExprEvaluationException - If the boolean expression could not be evaluated, for example when comparing two incompatible operands. When thrown, the result of the boolean expression is neither true or false, but unknown.

SailQueryException

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()