org.apache.jena.sparql.engine.ref

Class TableJoin

java.lang.Object

org.apache.jena.sparql.engine.ref.TableJoin

public class TableJoin
extends Object

Table join - this only happens if the patterns can not be streamed. This code is simple! Primarily for use in testing and also the reference query engine which is designed for simplicity, not performance.

Constructor Summary

Constructors

Constructor and Description
TableJoin()

Method Summary

Modifier and Type	Method and Description
static QueryIterator	join(QueryIterator left, Table right, ExprList condition, ExecutionContext execCxt)
static QueryIterator	joinWorker(QueryIterator left, Table right, JoinType joinType, ExprList conditions, ExecutionContext execCxt)
static QueryIterator	leftJoin(QueryIterator left, Table right, ExprList condition, ExecutionContext execCxt)

Methods inherited from class java.lang.Object

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

Constructor Detail

TableJoin

public TableJoin()

Method Detail

join

public static QueryIterator join(QueryIterator left,
                                 Table right,
                                 ExprList condition,
                                 ExecutionContext execCxt)

leftJoin

public static QueryIterator leftJoin(QueryIterator left,
                                     Table right,
                                     ExprList condition,
                                     ExecutionContext execCxt)

joinWorker

public static QueryIterator joinWorker(QueryIterator left,
                                       Table right,
                                       JoinType joinType,
                                       ExprList conditions,
                                       ExecutionContext execCxt)