org.openrdf.query.algebra.evaluation.function

Class UnaryFunction

java.lang.Object

org.openrdf.query.algebra.evaluation.function.UnaryFunction

All Implemented Interfaces:

Function

public abstract class UnaryFunction
extends Object
implements Function

Constructor Summary

Constructors

Constructor and Description
UnaryFunction()

Method Summary

Modifier and Type	Method and Description
Value	evaluate(ValueFactory valueFactory, Value... args) Evaluates this function for the given arguments.
protected abstract Value	evaluate(ValueFactory valueFactory, Value arg)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.openrdf.query.algebra.evaluation.function.Function

getURI

Constructor Detail

UnaryFunction

public UnaryFunction()

Method Detail

evaluate

public Value evaluate(ValueFactory valueFactory,
                      Value... args)
               throws ValueExprEvaluationException

Description copied from interface: Function

Evaluates this function for the given arguments.

Specified by:

evaluate in interface Function

Parameters:

valueFactory - the ValueFactory provided for creating Values.

args - the arguments provided.

Returns:

a non-null Value.

Throws:

ValueExprEvaluationException - if this function could not be evaluated to a Value.

evaluate

protected abstract Value evaluate(ValueFactory valueFactory,
                                  Value arg)
                           throws ValueExprEvaluationException

Throws:

ValueExprEvaluationException