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

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

All Implemented Interfaces:

OptimizerRule

public final class RuleRemoveSorts
extends java.lang.Object
implements OptimizerRule

Removes all nested sorts that are not under a limit. These sorts are considered unnecessary since inline views and virtual layers represent unordered tuple sets.

Constructor Summary

RuleRemoveSorts()

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

RuleRemoveSorts

public RuleRemoveSorts()

Method Detail

execute

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

Specified by:

execute in interface OptimizerRule

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object