com.metamatrix.query.optimizer.relational.rules
Class RuleChooseJoinStrategy

java.lang.Object
  com.metamatrix.query.optimizer.relational.rules.RuleChooseJoinStrategy

All Implemented Interfaces:

OptimizerRule

public class RuleChooseJoinStrategy
extends java.lang.Object
implements OptimizerRule

Marks join as a candidate merge join if conditions are met

Constructor Summary

RuleChooseJoinStrategy()

Method Summary

PlanNode	execute(PlanNode plan, QueryMetadataInterface metadata, CapabilitiesFinder capFinder, RuleStack rules, AnalysisRecord analysisRecord, CommandContext context)
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

RuleChooseJoinStrategy

public RuleChooseJoinStrategy()

Method Detail

execute

public PlanNode execute(PlanNode plan,
                        QueryMetadataInterface metadata,
                        CapabilitiesFinder capFinder,
                        RuleStack rules,
                        AnalysisRecord analysisRecord,
                        CommandContext context)
                 throws QueryMetadataException,
                        MetaMatrixComponentException

Specified by:

execute in interface OptimizerRule

Throws:

QueryMetadataException

MetaMatrixComponentException

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object