org.apache.pig.newplan.logical.optimizer

Class LogicalPlanPrinter

java.lang.Object

org.apache.pig.newplan.PlanVisitor

org.apache.pig.newplan.logical.optimizer.LogicalPlanPrinter

public class LogicalPlanPrinter
extends PlanVisitor

A visitor mechanism printing out the logical plan.

Field Summary

Fields

Modifier and Type	Field and Description
protected boolean	reverse
static String	SEPERATE
protected ArrayList<byte[]>	tabs

Fields inherited from class org.apache.pig.newplan.PlanVisitor

currentWalker, DEFAULT_SCOPE, plan

Constructor Summary

Constructors

Constructor and Description
LogicalPlanPrinter(OperatorPlan plan, PrintStream ps)

Method Summary

Modifier and Type	Method and Description
protected void	depthFirstLP()
void	visit() Entry point for visiting the plan.

Methods inherited from class org.apache.pig.newplan.PlanVisitor

getPlan, popWalker, pushWalker

Methods inherited from class java.lang.Object

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

Field Detail

SEPERATE

public static String SEPERATE

tabs

protected ArrayList<byte[]> tabs

reverse

protected boolean reverse

Constructor Detail

LogicalPlanPrinter

public LogicalPlanPrinter(OperatorPlan plan,
                          PrintStream ps)
                   throws FrontendException

Parameters:

ps - PrintStream to output plan information to

plan - Logical plan to print

Throws:

FrontendException

Method Detail

visit

public void visit()
           throws FrontendException

Description copied from class: PlanVisitor

Entry point for visiting the plan.

Overrides:

visit in class PlanVisitor

Throws:

VisitorException - if an error is encountered while visiting.

FrontendException

depthFirstLP

protected void depthFirstLP()
                     throws FrontendException,
                            IOException

Throws:

FrontendException

IOException