Package org.eclipse.rdf4j.query.algebra.evaluation.iterator

Class FilterIterator.RetainedVariableFilteredQueryEvaluationContext

java.lang.Object

org.eclipse.rdf4j.query.algebra.evaluation.iterator.FilterIterator.RetainedVariableFilteredQueryEvaluationContext

All Implemented Interfaces:

QueryEvaluationContext

Enclosing class:

FilterIterator

public static final class FilterIterator.RetainedVariableFilteredQueryEvaluationContext
extends Object
implements QueryEvaluationContext

This is used to make sure that no variable is seen by the filter that are not in scope. Historically important in subquery cases.

Nested Class Summary

Nested classes/interfaces inherited from interface org.eclipse.rdf4j.query.algebra.evaluation.impl.QueryEvaluationContext

QueryEvaluationContext.Minimal

Constructor Summary

Constructors

Constructor	Description
RetainedVariableFilteredQueryEvaluationContext(Filter node, QueryEvaluationContext contextToFilter)

Method Summary

Modifier and Type	Method	Description
Function<BindingSet,Binding>	getBinding(String variableName)
Dataset	getDataset()
Literal	getNow()
Function<BindingSet,Value>	getValue(String variableName)
Predicate<BindingSet>	hasBinding(String variableName)
BiConsumer<Value,MutableBindingSet>	setBinding(String variableName)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.eclipse.rdf4j.query.algebra.evaluation.impl.QueryEvaluationContext

addBinding, createBindingSet, createBindingSet

Constructor Detail

RetainedVariableFilteredQueryEvaluationContext

public RetainedVariableFilteredQueryEvaluationContext(Filter node,
                                                      QueryEvaluationContext contextToFilter)

Method Detail

getNow

public Literal getNow()

Specified by:

getNow in interface QueryEvaluationContext

Returns:

the shared now;

getDataset

public Dataset getDataset()

Specified by:

getDataset in interface QueryEvaluationContext

Returns:

The dataset that this query is operation on.

hasBinding

public Predicate<BindingSet> hasBinding(String variableName)

Specified by:

hasBinding in interface QueryEvaluationContext

getBinding

public Function<BindingSet,Binding> getBinding(String variableName)

Specified by:

getBinding in interface QueryEvaluationContext

getValue

public Function<BindingSet,Value> getValue(String variableName)

Specified by:

getValue in interface QueryEvaluationContext

setBinding

public BiConsumer<Value,MutableBindingSet> setBinding(String variableName)

Specified by:

setBinding in interface QueryEvaluationContext