org.apache.tajo.plan.rewrite

Class LogicalPlanRewriteRuleProvider

java.lang.Object

org.apache.tajo.plan.rewrite.LogicalPlanRewriteRuleProvider

Direct Known Subclasses:

BaseLogicalPlanRewriteRuleProvider

public abstract class LogicalPlanRewriteRuleProvider
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
protected TajoConf	systemConf

Constructor Summary

Constructors

Constructor and Description
LogicalPlanRewriteRuleProvider(TajoConf systemConf)

Method Summary

Methods

Modifier and Type	Method and Description
abstract Collection<Class<? extends LogicalPlanRewriteRule>>	getPostRules() It returns RewriteRule classes which should be executed after join ordering.
abstract Collection<Class<? extends LogicalPlanRewriteRule>>	getPreRules() It returns RewriteRule classes which should be executed before join ordering.

Methods inherited from class java.lang.Object

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

Field Detail

systemConf

protected final TajoConf systemConf

Constructor Detail

LogicalPlanRewriteRuleProvider

public LogicalPlanRewriteRuleProvider(TajoConf systemConf)

Method Detail

getPreRules

public abstract Collection<Class<? extends LogicalPlanRewriteRule>> getPreRules()

It returns RewriteRule classes which should be executed before join ordering.

Returns:

RewriteRule classes

getPostRules

public abstract Collection<Class<? extends LogicalPlanRewriteRule>> getPostRules()

It returns RewriteRule classes which should be executed after join ordering.

Returns:

RewriteRule classes