Package se.liu.ida.hefquin.engine.queryproc.impl.loptimizer.heuristics

Class CardinalityBasedJoinOrderingBase.AnnotatedLogicalPlan

java.lang.Object

se.liu.ida.hefquin.engine.queryproc.impl.loptimizer.heuristics.CardinalityBasedJoinOrderingBase.AnnotatedLogicalPlan

Enclosing class:

CardinalityBasedJoinOrderingBase

protected static class CardinalityBasedJoinOrderingBase.AnnotatedLogicalPlan
extends Object

A help class that wraps a LogicalPlan together with some information about this plan that is relevant for the algorithm of the main class (CardinalityBasedJoinOrderingBase and that may be relevant for implementations of the abstract functions.

Field Summary

Fields

Modifier and Type	Field	Description
final int	cardinality	Result cardinality as has been estimated for plan.
final LogicalPlan	plan	The wrapped LogicalPlan.
final Set<org.apache.jena.sparql.core.Var>	potentialJoinVars	The set of certain variables of plan; shortcut for calling ExpectedVariables#getCertainVariables()) on LogicalPlan.getExpectedVariables().

Constructor Summary

Constructors

Constructor	Description
AnnotatedLogicalPlan(LogicalPlan plan, int card)

Method Summary

Methods inherited from class java.lang.Object

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

Field Details

plan

public final LogicalPlan plan

The wrapped LogicalPlan.

potentialJoinVars

public final Set<org.apache.jena.sparql.core.Var> potentialJoinVars

The set of certain variables of plan; shortcut for calling ExpectedVariables#getCertainVariables()) on LogicalPlan.getExpectedVariables().

cardinality

public final int cardinality

Result cardinality as has been estimated for plan.

Constructor Details

AnnotatedLogicalPlan

public AnnotatedLogicalPlan(LogicalPlan plan,
 int card)