org.teiid.query.optimizer.relational.rules
Class RuleRemoveOptionalJoins

java.lang.Object
  org.teiid.query.optimizer.relational.rules.RuleRemoveOptionalJoins

All Implemented Interfaces:

OptimizerRule

public class RuleRemoveOptionalJoins
extends Object
implements OptimizerRule

Removes optional join nodes if elements originating from that join are not used in the top level project symbols.

Constructor Summary

RuleRemoveOptionalJoins()

Method Summary

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

Methods inherited from class java.lang.Object

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

Constructor Detail

RuleRemoveOptionalJoins

public RuleRemoveOptionalJoins()

Method Detail

execute

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

Specified by:

execute in interface OptimizerRule

Throws:

QueryPlannerException

QueryMetadataException

TeiidComponentException

toString

public String toString()

Overrides:

toString in class Object