Module org.apache.jena.arq

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

Class QueryIterNestedLoopLeftJoin

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.QueryIterNestedLoopLeftJoin

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 QueryIterNestedLoopLeftJoin
extends QueryIter2

Nested Loop left Join (materializing on the right, streaming on the left) 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
QueryIterNestedLoopLeftJoin(QueryIterator left, QueryIterator right, ExprList exprList, 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

QueryIterNestedLoopLeftJoin

public QueryIterNestedLoopLeftJoin(QueryIterator left,
 QueryIterator right,
 ExprList exprList,
 ExecutionContext cxt)