Uses of Class
org.apache.jena.sparql.engine.iterator.QueryIter

Packages that use QueryIter

Package	Description
org.apache.jena.sparql.engine.iterator
org.apache.jena.sparql.engine.join
org.apache.jena.sparql.engine.main.iterator

Uses of QueryIter in org.apache.jena.sparql.engine.iterator

Subclasses of QueryIter in org.apache.jena.sparql.engine.iterator

Modifier and Type	Class	Description
class	QueryIter1	This class supports a QueryIter that takes one QueryIterator as input.
class	QueryIter2	This class marks a QueryIter that takes two QueryIterators as input.
class	QueryIter2LoopOnLeft	Binary operation done by looping on the left, and materializing the right - this is not streamed on the right See also QueryIterRepeatApply
class	QueryIterAbortable	QueryIterator that calls a list of abort actions when a cancel happens.
class	QueryIterAddTripleTerm	Add (var, matchTriple) to a QueryIterator.
class	QueryIterAssign	Extend each solution by a (var, expression)
class	QueryIterAssignVarValue	Extend each solution by a (var, node) When used with mustBeNewVar=false, this is a join.
class	QueryIterCommonParent	Yield new bindings, with a fixed parent, with values from an iterator.
class	QueryIterConcat	A query iterator that joins two or more iterators into a single iterator.
class	QueryIterConvert	Iterator over another QueryIterator, applying a converter function to each object that is returned by .next()
class	QueryIterDefaulting	An iterator that returns at least one element from another iterator or a default value (once) if the wrapped iterator returns nothing.
class	QueryIterDistinct	A QueryIterator that suppresses items already seen.
class	QueryIterDistinctMem	Memory limited QueryIterDistinct
class	QueryIterDistinctReduced	Implementation skeleton for DISTINCT and REDUCED.
class	QueryIterDistinguishedVars	Filter bindings for distinguished variables only Currently unused.
class	QueryIterExtendByVar	Yield new bindings, with a fixed parent, with values from an iterator.
class	QueryIterFilterExpr	Filter a stream of bindings by a constraint.
class	QueryIterGroup
class	QueryIterHalfJoin	SemiJoin and AntiJoin
class	QueryIterLateral
class	QueryIterMinus	Minus by materializing the RHS - this is not streamed on the right
class	QueryIterNullIterator	Closeable empty query iterator
class	QueryIterPath
class	QueryIterPeek
class	QueryIterPlainWrapper	Turn an normal java.util.Iterator (of Bindings) into a QueryIterator
class	QueryIterProcedure	QueryIterator for a procedure.
class	QueryIterProcessBinding	An iterator that applies a condition.
class	QueryIterProject
class	QueryIterProjectMerge	Execute a projection in the middle of an execution.
class	QueryIterReduced
class	QueryIterRepeatApply	Repeatedly execute the subclass operation for each Binding in the input iterator.
class	QueryIterRoot	The root binding is one-row and has no columns making it the join identity.
class	QueryIterSingleton	A singleton iterator
class	QueryIterSlice	Iterator until a limit is reached.
class	QueryIterSort	Sort a query iterator.
class	QueryIterSub	This class supports a QueryIter that uses a single sub iterator.
class	QueryIterTopN
class	QueryIterTracked	Track a QueryIterator
class	QueryIterUnfold
class	QueryIterYieldN	A query iterator that yields the same thing N times.

Methods in org.apache.jena.sparql.engine.iterator that return QueryIter

Modifier and Type	Method	Description
static QueryIter	QueryIter.flatMap(QueryIterator input, Function<Binding,QueryIterator> mapper, ExecutionContext execCxt)	flatmap.
static QueryIter	QueryIter.makeTracked(QueryIterator qIter, ExecutionContext execCxt)
static QueryIter	QueryIter.materialize(QueryIterator qIter, ExecutionContext execCxt)

Uses of QueryIter in org.apache.jena.sparql.engine.join

Subclasses of QueryIter in org.apache.jena.sparql.engine.join

Modifier and Type	Class	Description
class	AbstractIterHashJoin	Hash join algorithm This code materializes one input into the probe table then hash joins the other input from the stream side.
class	QueryIterHashJoin	Hash left join.
class	QueryIterHashLeftJoin_Left	Hash left join.
class	QueryIterHashLeftJoin_Right	Hash left join.
class	QueryIterNestedLoopJoin	Nested Loop Join (materializing on the left, streaming on the right) A simple, dependable join.
class	QueryIterNestedLoopLeftJoin	Nested Loop left Join (materializing on the right, streaming on the left) A simple, dependable join.

Uses of QueryIter in org.apache.jena.sparql.engine.main.iterator

Subclasses of QueryIter in org.apache.jena.sparql.engine.main.iterator

Modifier and Type	Class	Description
class	QueryIterGraph
class	QueryIterOptionalIndex
class	QueryIterService	Deprecated, for removal: This API element is subject to removal in a future version. To be removed.
class	QueryIterUnion	Execute each sub stage against the input.