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.

Constructor Summary

Constructors

Constructor	Description
ExhaustiveSourcePlannerImpl()

Method Summary

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

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

createPlan, createPlanForBGP, createPlanForBGP, createPlanForBGP, createPlanForBind, createPlanForDistinct, createPlanForFilter, createPlanForFilter, createPlanForJoin, createPlanForJoin, createPlanForJoin, createPlanForLeftJoin, createPlanForLeftJoin, createPlanForLeftJoin, createPlanForLeftJoin, createPlanForMinus, createPlanForOpTable, createPlanForProject, createPlanForSequence, createPlanForServicePattern, createPlanForServiceWithParams, createPlanForTriplePattern, createPlanForUnfold, createPlanForUnion, createPlanForUnion, createPlanForValues, 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()

Method Details

createPlan

protected LogicalPlan createPlan(org.apache.jena.sparql.algebra.Op jenaOp,
 boolean mayReduce,
 QueryProcContext ctxt)

Overrides:

createPlan in class ServiceClauseBasedSourcePlannerImpl

createPlanForBGP

protected LogicalPlan createPlanForBGP(org.apache.jena.sparql.algebra.op.OpBGP bgpOp,
 QueryProcContext ctxt,
 boolean mayReduce)

createSubPlanForTP

protected LogicalPlan createSubPlanForTP(org.apache.jena.graph.Triple tp,
 QueryProcContext ctxt,
 boolean mayReduce)

createRequestSubPlan

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