Class SourcePlannerBase

java.lang.Object

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

All Implemented Interfaces:

SourcePlanner

Direct Known Subclasses:

ServiceClauseBasedSourcePlannerImpl

public abstract class SourcePlannerBase
extends Object
implements SourcePlanner

Field Summary

Fields

Modifier and Type	Field	Description
protected final QueryProcContext	ctxt

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	SourcePlannerBase(QueryProcContext ctxt)

Method Summary

Modifier and Type	Method	Description
protected abstract Pair<LogicalPlan,SourcePlanningStats>	createSourceAssignment(org.apache.jena.sparql.algebra.Op jenaOp)
final Pair<LogicalPlan,SourcePlanningStats>	createSourceAssignment(Query query)	The logical plan returned by this method is a source assignment (see Definition 8 of our FedQPL paper); that is, the only types of operators that it contains are request operators ( invalid reference LogicalOpRequest ), multiway joins ( invalid reference LogicalOpMultiwayJoin ), and multiway unions ( invalid reference LogicalOpMultiwayUnion ).

Methods inherited from class java.lang.Object

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

Field Details

ctxt

protected final QueryProcContext ctxt

Constructor Details

SourcePlannerBase

protected SourcePlannerBase(QueryProcContext ctxt)

Method Details

createSourceAssignment

public final Pair<LogicalPlan,SourcePlanningStats> createSourceAssignment(Query query)
                                                                   throws SourcePlanningException

Description copied from interface: SourcePlanner

The logical plan returned by this method is a source assignment (see Definition 8 of our FedQPL paper); that is, the only types of operators that it contains are request operators (

invalid reference

LogicalOpRequest

), multiway joins (

invalid reference

LogicalOpMultiwayJoin

), and multiway unions (

invalid reference

LogicalOpMultiwayUnion

).

Specified by:

createSourceAssignment in interface SourcePlanner

Throws:

SourcePlanningException

createSourceAssignment

protected abstract Pair<LogicalPlan,SourcePlanningStats> createSourceAssignment(org.apache.jena.sparql.algebra.Op jenaOp)
                                                                         throws SourcePlanningException

Throws:

SourcePlanningException