Uses of Class
org.eclipse.rdf4j.common.iteration.LookAheadIteration
Packages that use LookAheadIteration
Package
Description
Implementations of
Iteration relevant to query evaluation.Base functionality for Sail implementations that require multi-versioned concurrency control (MVCC).
Elasticsearch store for string triples
MemoryStore-specific implementations of the core RDF model objects.
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Uses of LookAheadIteration in org.eclipse.rdf4j.common.iteration
Subclasses of LookAheadIteration in org.eclipse.rdf4j.common.iterationModifier and TypeClassDescriptionclassQueueIteration<E,T extends RuntimeException> Makes working with a queue easier by adding the methodsQueueIteration.done()andQueueIteration.toss(Exception)and after converting the Exception to the required type usingQueueIteration.convert(Exception).classAn Iteration that returns the bag union of the results of a number of Iterations. -
Uses of LookAheadIteration in org.eclipse.rdf4j.federated.evaluation.concurrent
Subclasses of LookAheadIteration in org.eclipse.rdf4j.federated.evaluation.concurrentModifier and TypeClassDescriptionclassSpecialized variants ofQueueCursorwhich avoids converting any exception if it is already of typeQueryEvaluationException.classBase class for common parallel executors such asJoinExecutorBaseandUnionExecutorBase.classParallel executor forFedXServicenodes, which wrap SERVICE expressions. -
Uses of LookAheadIteration in org.eclipse.rdf4j.federated.evaluation.iterator
Subclasses of LookAheadIteration in org.eclipse.rdf4j.federated.evaluation.iteratorModifier and TypeClassDescriptionclassALookAheadIterationfor processing bind left join results (i.e., result of joining OPTIONAL clauses) Algorithm: execute left bind join using regular bound join query process result iteration similar toBoundJoinVALUESConversionIterationremember seen set of bindings (using index) and add original bindings to those, i.e.classSpecializedDescribeIterationfor evaluation of DESCRIBE queries in the federation.classclassAn iteration to evaluatedFedXZeroLengthPathclassInserts original bindings into the result.classInserts original bindings into the result.classInserts original bindings into the result. -
Uses of LookAheadIteration in org.eclipse.rdf4j.federated.evaluation.join
Subclasses of LookAheadIteration in org.eclipse.rdf4j.federated.evaluation.joinModifier and TypeClassDescriptionclassExecution of a regular join as bind join.classBase class for executing joins as bind joins (i.e., the bindings of a block are injected in the SPARQL query as VALUES clause).classBind join implementation for left joins (i.e., OPTIOAL clauses)classDeprecated, for removal: This API element is subject to removal in a future version.classExecute the nested loop join in an asynchronous fashion, i.e.classExecute the nested loop join in an asynchronous fashion, i.e.classOperator for a hash join of tuple expressions.classBase class for any join parallel join executor.classExecute the nested loop join in a synchronous fashion, using grouped requests, i.e.classExecute the nested loop join in a synchronous fashion, i.e. -
Uses of LookAheadIteration in org.eclipse.rdf4j.federated.evaluation.union
Subclasses of LookAheadIteration in org.eclipse.rdf4j.federated.evaluation.unionModifier and TypeClassDescriptionclassExecution of union tasks withControlledWorkerScheduler.classSynchronous execution of union tasks, i.e.classBase class for any parallel union executor.classBase class for worker unions providing convenience functions to add tasks. -
Uses of LookAheadIteration in org.eclipse.rdf4j.query.algebra.evaluation.federation
Subclasses of LookAheadIteration in org.eclipse.rdf4j.query.algebra.evaluation.federationModifier and TypeClassDescriptionclassIterator for efficient SERVICE evaluation (vectored). -
Uses of LookAheadIteration in org.eclipse.rdf4j.query.algebra.evaluation.iterator
Subclasses of LookAheadIteration in org.eclipse.rdf4j.query.algebra.evaluation.iteratorModifier and TypeClassDescriptionclassclassclassclassclassIteration which forms the cross product of a list of materialized input bindings with each result obtained from the inner iteration.classIteration that implements a simplified version of Symmetric Concise Bounded Description (omitting reified statements).classGeneric hash join implementation suitable for use by Sail implementations.classInterleaved join iterator.classclassclassclass -
Uses of LookAheadIteration in org.eclipse.rdf4j.query.impl
Subclasses of LookAheadIteration in org.eclipse.rdf4j.query.implModifier and TypeClassDescriptionclassQueueCursor<E>Makes working with a queue easier by adding the methodsQueueIteration.done()andQueueIteration.toss(Exception)and automatically converting the exception into a QueryEvaluationException with an appropriate stack trace. -
Uses of LookAheadIteration in org.eclipse.rdf4j.repository.sparql.federation
Subclasses of LookAheadIteration in org.eclipse.rdf4j.repository.sparql.federationModifier and TypeClassDescriptionclassBase class for any join parallel join executor.classIteration which forms the cross product of a list of materialized input bindings with each result obtained from the inner iteration. -
Uses of LookAheadIteration in org.eclipse.rdf4j.sail.base
Subclasses of LookAheadIteration in org.eclipse.rdf4j.sail.baseModifier and TypeClassDescriptionclassAn Iteration that takes two source. -
Uses of LookAheadIteration in org.eclipse.rdf4j.sail.extensiblestore
Subclasses of LookAheadIteration in org.eclipse.rdf4j.sail.extensiblestoreModifier and TypeClassDescriptionclassFilteringIteration<E extends ExtensibleStatement,X extends Exception> A wrapper for an Iteration that filters the statements against a pattern similar to getStatements(Resource subject, IRI predicate, Value object, Resource...classSortedIteration<E extends ExtensibleStatement,X extends Exception> A wrapper for an Iteration that filters the statements against a pattern similar to getStatements(Resource subject, IRI predicate, Value object, Resource... -
Uses of LookAheadIteration in org.eclipse.rdf4j.sail.memory.model
Subclasses of LookAheadIteration in org.eclipse.rdf4j.sail.memory.modelModifier and TypeClassDescriptionclassMemTripleIterator<X extends Exception>An Iteration that can iterate over a list ofTripleobjects.
ControlledWorkerBindJoinl