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

Constructor Summary

Constructors

Constructor	Description
SourcePlannerBase()

Method Summary

Modifier and Type	Method	Description
protected abstract Pair<LogicalPlan,SourcePlanningStats>	createSourceAssignment(org.apache.jena.sparql.algebra.Op jenaOp, QueryProcContext ctxt)
final Pair<LogicalPlan,SourcePlanningStats>	createSourceAssignment(Query query, QueryProcContext ctxt)	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

Constructor Details

SourcePlannerBase

public SourcePlannerBase()

Method Details

createSourceAssignment

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

Throws:

SourcePlanningException