Uses of Class
org.eclipse.rdf4j.common.iteration.LookAheadIteration

Packages that use LookAheadIteration

Package	Description
org.eclipse.rdf4j.common.iteration
org.eclipse.rdf4j.federated.evaluation.concurrent
org.eclipse.rdf4j.federated.evaluation.iterator
org.eclipse.rdf4j.federated.evaluation.join
org.eclipse.rdf4j.federated.evaluation.union
org.eclipse.rdf4j.query.algebra.evaluation.federation
org.eclipse.rdf4j.query.algebra.evaluation.iterator	Implementations of invalid reference Iteration relevant to query evaluation.
org.eclipse.rdf4j.query.impl
org.eclipse.rdf4j.repository.sparql.federation
org.eclipse.rdf4j.sail.base	Base functionality for Sail implementations that require multi-versioned concurrency control (MVCC).
org.eclipse.rdf4j.sail.extensiblestore	Elasticsearch store for string triples
org.eclipse.rdf4j.sail.memory.model	MemoryStore-specific implementations of the core RDF model objects.

Uses of LookAheadIteration in org.eclipse.rdf4j.common.iteration

Subclasses of LookAheadIteration in org.eclipse.rdf4j.common.iteration

Modifier and Type	Class	Description
class	QueueIteration<E,T extends RuntimeException>	Makes working with a queue easier by adding the methods QueueIteration.done() and QueueIteration.toss(Exception) and after converting the Exception to the required type using QueueIteration.convert(Exception).
class	UnionIteration<E>	An 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.concurrent

Modifier and Type	Class	Description
class	FedXQueueCursor<T>	Specialized variants of QueueCursor which avoids converting any exception if it is already of typeQueryEvaluationException.
class	ParallelExecutorBase<T>	Base class for common parallel executors such as JoinExecutorBase and UnionExecutorBase.
class	ParallelServiceExecutor	Parallel executor for FedXService nodes, which wrap SERVICE expressions.

Uses of LookAheadIteration in org.eclipse.rdf4j.federated.evaluation.iterator

Subclasses of LookAheadIteration in org.eclipse.rdf4j.federated.evaluation.iterator

Modifier and Type	Class	Description
class	BindLeftJoinIteration	A LookAheadIteration for 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 to BoundJoinVALUESConversionIteration remember seen set of bindings (using index) and add original bindings to those, i.e.
class	FederatedDescribeIteration	Specialized DescribeIteration for evaluation of DESCRIBE queries in the federation.
class	FedXPathIteration
class	FedXZeroLengthPathIteration	An iteration to evaluated FedXZeroLengthPath
class	IndependentJoingroupBindingsIteration	Inserts original bindings into the result.
class	IndependentJoingroupBindingsIteration2	Inserts original bindings into the result.
class	IndependentJoingroupBindingsIteration3	Inserts original bindings into the result.

Uses of LookAheadIteration in org.eclipse.rdf4j.federated.evaluation.join

Subclasses of LookAheadIteration in org.eclipse.rdf4j.federated.evaluation.join

Modifier and Type	Class	Description
class	ControlledWorkerBindJoin	Execution of a regular join as bind join.
class	ControlledWorkerBindJoinBase	Base class for executing joins as bind joins (i.e., the bindings of a block are injected in the SPARQL query as VALUES clause).
class	ControlledWorkerBindLeftJoin	Bind join implementation for left joins (i.e., OPTIOAL clauses)
class	ControlledWorkerBoundJoin	Deprecated, for removal: This API element is subject to removal in a future version. replaced with ControlledWorkerBindJoinl
class	ControlledWorkerJoin	Execute the nested loop join in an asynchronous fashion, i.e.
class	ControlledWorkerLeftJoin	Execute the nested loop join in an asynchronous fashion, i.e.
class	HashJoin	Operator for a hash join of tuple expressions.
class	JoinExecutorBase<T>	Base class for any join parallel join executor.
class	SynchronousBoundJoin	Execute the nested loop join in a synchronous fashion, using grouped requests, i.e.
class	SynchronousJoin	Execute 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.union

Modifier and Type	Class	Description
class	ControlledWorkerUnion<T>	Execution of union tasks with ControlledWorkerScheduler.
class	SynchronousWorkerUnion<T>	Synchronous execution of union tasks, i.e.
class	UnionExecutorBase<T>	Base class for any parallel union executor.
class	WorkerUnionBase<T>	Base 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.federation

Modifier and Type	Class	Description
class	ServiceJoinIterator	Iterator 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.iterator

Modifier and Type	Class	Description
class	AsyncIteratorBuffer
class	AsyncIteratorDirect
class	AsyncIteratorReadAhead
class	BadlyDesignedLeftJoinIterator
class	CrossProductIteration	Iteration which forms the cross product of a list of materialized input bindings with each result obtained from the inner iteration.
class	DescribeIteration	Iteration that implements a simplified version of Symmetric Concise Bounded Description (omitting reified statements).
class	HashJoinIteration	Generic hash join implementation suitable for use by Sail implementations.
class	JoinIterator	Interleaved join iterator.
class	LeftJoinIterator
class	MultiProjectionIterator
class	PathIteration
class	ZeroLengthPathIteration

Uses of LookAheadIteration in org.eclipse.rdf4j.query.impl

Subclasses of LookAheadIteration in org.eclipse.rdf4j.query.impl

Modifier and Type	Class	Description
class	QueueCursor<E>	Makes working with a queue easier by adding the methods QueueIteration.done() and QueueIteration.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.federation

Modifier and Type	Class	Description
class	JoinExecutorBase<T>	Base class for any join parallel join executor.
class	SPARQLCrossProductIteration	Iteration 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.base

Modifier and Type	Class	Description
class	DistinctModelReducingUnionIteration	An Iteration that takes two source.

Uses of LookAheadIteration in org.eclipse.rdf4j.sail.extensiblestore

Subclasses of LookAheadIteration in org.eclipse.rdf4j.sail.extensiblestore

Modifier and Type	Class	Description
class	FilteringIteration<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...
class	SortedIteration<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.model

Modifier and Type	Class	Description
class	MemTripleIterator<X extends Exception>	An Iteration that can iterate over a list of Triple objects.