Package org.apache.jena.sparql.engine.iterator

Interface Summary

Interface	Description
QueryIterConvert.Converter

Class Summary

Class	Description
QueryIter	This class provides the general machinary for iterators.
QueryIter1	This class supports a QueryIter that takes one QueryIterator as input.
QueryIter2	This class marks a QueryIter that takes two QueryIterators as input.
QueryIter2LoopOnLeft	Binary operation done by looping on the left, and materializing the right - this is not streamed on the right See also QueryIterRepeatApply
QueryIterAssign	Extend each solution by a (var, expression)
QueryIterAssignVarValue	Extend each solution by a (var, node) When used with mustBeNewVar=false, this is a join.
QueryIteratorBase	This class provides the general machinary for iterators.
QueryIteratorCaching	A caching QueryIterator.
QueryIteratorCheck	Query iterator that checks everything was closed correctly
QueryIteratorCloseable
QueryIteratorLogging	Intercept and print iterator operations
QueryIteratorMapped	A query iterator which allows remapping variables to different names
QueryIteratorResultSet
QueryIteratorTiming
QueryIteratorWrapper	Wrap a QueryIterator so it can have some/all of it's methods intercepted.
QueryIterBlockTriples
QueryIterCommonParent	Yield new bindings, with a fixed parent, with values from an iterator.
QueryIterConcat	A query iterator that joins two or more iterators into a single iterator.
QueryIterConvert	Iterator over another QueryIterator, applying a converter function to each object that is returned by .next()
QueryIterDefaulting	An iterator that returns at least one element from another iterator or a default value (once) if the wrapped iterator returns nothing.
QueryIterDiff	Diff by materializing the RHS - this is not streamed on the right
QueryIterDistinct	A QueryIterator that suppresses items already seen.
QueryIterDistinctMem	Memory limited QueryIterDistinct
QueryIterDistinctReduced	Implementation skeleton for DISTINCT and REDUCED.
QueryIterDistinguishedVars	Filter bindings for distinguished variables only Currently unused.
QueryIterExtendByVar	Yield new bindings, with a fixed parent, with values from an iterator.
QueryIterFilterExpr	Filter a stream of bindings by a constraint.
QueryIterGroup
QueryIterMinus	Minus by materializing the RHS - this is not streamed on the right
QueryIterNullIterator	Closeable empty query iterator
QueryIterPath
QueryIterPeek
QueryIterPlainWrapper	Turn an normal java.util.Iterator (of Bindings) into a QueryIterator
QueryIterProcedure	QueryIterator for a procedure.
QueryIterProcessBinding	An iterator that applies a condition.
QueryIterProject
QueryIterProjectMerge	Execute a projection in the middle of an execution.
QueryIterReduced
QueryIterRepeatApply	Repeatedly execute the subclass operation for each Binding in the input iterator.
QueryIterRoot
QueryIterSingleton	A singleton iterator
QueryIterSlice	Iterator until a limit is reached.
QueryIterSort	Sort a query iterator.
QueryIterSub	This class supports a QueryIter that uses a single sub iterator.
QueryIterTopN
QueryIterTracked	Track a QueryIterator
QueryIterTriplePattern
QueryIterYieldN	A query iterator that yields the same thing N times.