Class QueryValueEvaluationStep.Fail

java.lang.Object

org.eclipse.rdf4j.query.algebra.evaluation.QueryValueEvaluationStep.Fail

All Implemented Interfaces:

QueryValueEvaluationStep

Enclosing interface:

QueryValueEvaluationStep

public static final class QueryValueEvaluationStep.Fail
extends Object
implements QueryValueEvaluationStep

A minimal implementation that falls is known to throw an ValueExprEvaluationException. This can't be a constant as the downstream code needs to catch and deal with it and that needs re-evaluation.

Nested Class Summary

Nested classes/interfaces inherited from interface QueryValueEvaluationStep

QueryValueEvaluationStep.ApplyFunctionForEachBinding, QueryValueEvaluationStep.ConstantQueryValueEvaluationStep, QueryValueEvaluationStep.Fail, QueryValueEvaluationStep.Minimal

Constructor Summary

Constructors

Constructor	Description
Fail(String message)

Method Summary

Modifier and Type	Method	Description
Value	evaluate(BindingSet bindings)

Methods inherited from class Object

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

Methods inherited from interface QueryValueEvaluationStep

asPredicate, isConstant

Constructor Details

Fail

public Fail(String message)

Method Details

evaluate

public Value evaluate(BindingSet bindings)
               throws ValueExprEvaluationException,
QueryEvaluationException

Specified by:

evaluate in interface QueryValueEvaluationStep

Throws:

ValueExprEvaluationException

QueryEvaluationException