Package se.liu.ida.hefquin.engine.queryproc.impl.srcsel

Class ExhaustiveSourcePlannerImpl

java.lang.Object

se.liu.ida.hefquin.engine.queryproc.impl.srcsel.SourcePlannerBase

se.liu.ida.hefquin.engine.queryproc.impl.srcsel.ServiceClauseBasedSourcePlannerImpl

se.liu.ida.hefquin.engine.queryproc.impl.srcsel.ExhaustiveSourcePlannerImpl

All Implemented Interfaces:

SourcePlanner

public class ExhaustiveSourcePlannerImpl
extends ServiceClauseBasedSourcePlannerImpl

This implementation of SourcePlanner assigns every triple pattern of the given query to every federation member known in the federation catalog. In other words, this source planner creates what we call an 'exhaustive source assignment' in the FedQPL paper (see Definition 9 in Section 5.2 of the paper). This source planner assumes that the given queries do not contain any SERVICE clauses.

Field Summary

Fields inherited from class se.liu.ida.hefquin.engine.queryproc.impl.srcsel.SourcePlannerBase

ctxt

Constructor Summary

Constructors

Constructor	Description
ExhaustiveSourcePlannerImpl(QueryProcContext ctxt)

Method Summary

Modifier and Type	Method	Description
protected LogicalPlan	createPlan(org.apache.jena.sparql.algebra.Op jenaOp)
protected LogicalPlan	createPlanForBGP(org.apache.jena.sparql.algebra.op.OpBGP bgpOp)
protected LogicalPlan	createRequestSubPlan(org.apache.jena.graph.Triple tp, FederationMember fm)
protected LogicalPlan	createSubPlanForTP(org.apache.jena.graph.Triple tp)

Methods inherited from class se.liu.ida.hefquin.engine.queryproc.impl.srcsel.ServiceClauseBasedSourcePlannerImpl

createPlan, createPlanForBGP, createPlanForBGP, createPlanForBGP, createPlanForBind, createPlanForFilter, createPlanForFilter, createPlanForJoin, createPlanForJoin, createPlanForLeftJoin, createPlanForLeftJoin, createPlanForLeftJoin, createPlanForLeftJoin, createPlanForSequence, createPlanForServicePattern, createPlanForUnion, createPlanForUnion, createSourceAssignment, mergeIntoMultiwayJoin, mergeIntoMultiwayJoin, mergeIntoMultiwayLeftJoin, mergeIntoMultiwayUnion

Methods inherited from class se.liu.ida.hefquin.engine.queryproc.impl.srcsel.SourcePlannerBase

createSourceAssignment

Methods inherited from class java.lang.Object

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

Constructor Details

ExhaustiveSourcePlannerImpl

public ExhaustiveSourcePlannerImpl(QueryProcContext ctxt)

Method Details

createPlan

protected LogicalPlan createPlan(org.apache.jena.sparql.algebra.Op jenaOp)

Overrides:

createPlan in class ServiceClauseBasedSourcePlannerImpl

createPlanForBGP

protected LogicalPlan createPlanForBGP(org.apache.jena.sparql.algebra.op.OpBGP bgpOp)

createSubPlanForTP

protected LogicalPlan createSubPlanForTP(org.apache.jena.graph.Triple tp)

createRequestSubPlan

protected LogicalPlan createRequestSubPlan(org.apache.jena.graph.Triple tp,
 FederationMember fm)