Module org.apache.jena.arq

Package org.apache.jena.sparql.engine.join

Class QueryIterNestedLoopJoin

java.lang.Object

org.apache.jena.sparql.util.PrintSerializableBase

org.apache.jena.sparql.engine.iterator.QueryIteratorBase

org.apache.jena.sparql.engine.iterator.QueryIter

org.apache.jena.sparql.engine.iterator.QueryIter2

org.apache.jena.sparql.engine.join.QueryIterNestedLoopJoin

All Implemented Interfaces:

Iterator<Binding>, org.apache.jena.atlas.io.Printable, org.apache.jena.atlas.iterator.IteratorCloseable<Binding>, org.apache.jena.atlas.lib.Closeable, QueryIterator, PrintSerializable

public class QueryIterNestedLoopJoin
extends QueryIter2

Nested Loop Join (materializing on the left, streaming on the right) A simple, dependable join.

See Join.nestedLoopLeftJoinBasic(org.apache.jena.sparql.engine.QueryIterator, org.apache.jena.sparql.engine.QueryIterator, org.apache.jena.sparql.expr.ExprList, org.apache.jena.sparql.engine.ExecutionContext) for a very simple implementation for testing purposes only.

Constructor Summary

Constructors

Constructor	Description
QueryIterNestedLoopJoin(QueryIterator left, QueryIterator right, ExecutionContext cxt)

Method Summary

Methods inherited from class org.apache.jena.sparql.engine.iterator.QueryIter2

output

Methods inherited from class org.apache.jena.sparql.engine.iterator.QueryIter

close, flatMap, getExecContext, getIteratorNumber, makeTracked, map, materialize, materialize, output

Methods inherited from class org.apache.jena.sparql.engine.iterator.QueryIteratorBase

cancel, hasNext, next, nextBinding, remove

Methods inherited from class org.apache.jena.sparql.util.PrintSerializableBase

toString, toString

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface java.util.Iterator

forEachRemaining

Methods inherited from interface org.apache.jena.sparql.util.PrintSerializable

toString

Methods inherited from interface org.apache.jena.sparql.engine.QueryIterator

isJoinIdentity

Constructor Details

QueryIterNestedLoopJoin

public QueryIterNestedLoopJoin(QueryIterator left,
 QueryIterator right,
 ExecutionContext cxt)