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

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

All Implemented Interfaces:

OptimizerRule

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

Constructor Summary

RulePushSelectCriteria()

Method Summary

PlanNode	execute(PlanNode plan, QueryMetadataInterface metadata, CapabilitiesFinder capFinder, RuleStack rules, AnalysisRecord analysisRecord, CommandContext context) Execute the rule as described in the class comments.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

RulePushSelectCriteria

public RulePushSelectCriteria()

Method Detail

execute

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

Execute the rule as described in the class comments.

Specified by:

execute in interface OptimizerRule

Parameters:

plan - Incoming query plan, may be modified during method and may be returned from method

metadata - Metadata source

rules - Rules from optimizer rule stack, may be manipulated during method

Returns:

Updated query plan if rule fired, else original query plan

Throws:

QueryPlannerException

QueryMetadataException

MetaMatrixComponentException

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object