Class ValueExprTripleTermComponentEvaluationStep

java.lang.Object

org.eclipse.rdf4j.query.algebra.evaluation.impl.evaluationsteps.values.ValueExprTripleTermComponentEvaluationStep

All Implemented Interfaces:

QueryValueEvaluationStep

public class ValueExprTripleTermComponentEvaluationStep
extends Object
implements QueryValueEvaluationStep

Nested Class Summary

Nested classes/interfaces inherited from interface QueryValueEvaluationStep

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

Modifier and Type	Interface	Description
static final class	QueryValueEvaluationStep.ApplyFunctionForEachBinding	A minimal implementation that falls calls a function that should return a value per passed in bindingsets.
static class	QueryValueEvaluationStep.ConstantQueryValueEvaluationStep	A QueryValueEvalationStep that will return the same constant value throughout the query execution.
static final class	QueryValueEvaluationStep.Fail	A minimal implementation that falls is known to throw an ValueExprEvaluationException.
static final class	QueryValueEvaluationStep.Minimal	A minimal implementation that falls back to calling evaluate in the strategy.

Constructor Summary

Constructors

Constructor	Description
ValueExprTripleTermComponentEvaluationStep(QueryValueEvaluationStep tripleTerm, TripleComponent.Role role)

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

Modifier and Type	Method	Description
default Predicate<BindingSet>	asPredicate()
default boolean	isConstant()	If an value expression results in a constant then it may be executed once per query invocation.

Constructor Details

ValueExprTripleTermComponentEvaluationStep

public ValueExprTripleTermComponentEvaluationStep(QueryValueEvaluationStep tripleTerm,
 TripleComponent.Role role)

Method Details

evaluate

public Value evaluate(BindingSet bindings)
               throws QueryEvaluationException

Specified by:

evaluate in interface QueryValueEvaluationStep

Throws:

QueryEvaluationException