Package org.apache.drill.exec.opt

Class Optimizer

java.lang.Object

org.apache.drill.exec.opt.Optimizer

Direct Known Subclasses:

BasicOptimizer, IdentityOptimizer

public abstract class Optimizer
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	Optimizer.OptimizationContext

Field Summary

Fields

Modifier and Type	Field	Description
static String	OPTIMIZER_IMPL_KEY

Constructor Summary

Constructors

Constructor	Description
Optimizer()

Method Summary

Modifier and Type	Method	Description
static Optimizer	getOptimizer(DrillConfig config)
abstract void	init(DrillConfig config)
abstract PhysicalPlan	optimize(Optimizer.OptimizationContext context, LogicalPlan plan)

Methods inherited from class java.lang.Object

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

Field Details

OPTIMIZER_IMPL_KEY

public static String OPTIMIZER_IMPL_KEY

Constructor Details

Optimizer

public Optimizer()

Method Details

init

public abstract void init(DrillConfig config)

optimize

public abstract PhysicalPlan optimize(Optimizer.OptimizationContext context,
 LogicalPlan plan)
                               throws OptimizerException

Throws:

OptimizerException

getOptimizer

public static Optimizer getOptimizer(DrillConfig config)
                              throws DrillConfigurationException

Throws:

DrillConfigurationException