Class TextBasedLogicalPlanPrinterImpl

java.lang.Object

se.liu.ida.hefquin.engine.queryplan.utils.BaseForTextBasedPlanPrinters

se.liu.ida.hefquin.engine.queryplan.utils.TextBasedLogicalPlanPrinterImpl

All Implemented Interfaces:

LogicalPlanPrinter

public class TextBasedLogicalPlanPrinterImpl
extends BaseForTextBasedPlanPrinters
implements LogicalPlanPrinter

Internally, the functionality of this class is implemented based on a LogicalPlanVisitor, which makes sure that we get a compiler error whenever we add a new type of logical operator but forget to extend this class here to cover that new operator.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
protected static class	TextBasedLogicalPlanPrinterImpl.OpPrinter

Nested classes/interfaces inherited from class se.liu.ida.hefquin.engine.queryplan.utils.BaseForTextBasedPlanPrinters

BaseForTextBasedPlanPrinters.OpNamePrinter

Field Summary

Fields inherited from class se.liu.ida.hefquin.engine.queryplan.utils.BaseForTextBasedPlanPrinters

lastChildIndentBase, levelIndentBase, nonLastChildIndentBase, singleBase, spaceBase

Constructor Summary

Constructors

Constructor	Description
TextBasedLogicalPlanPrinterImpl()

Method Summary

Modifier and Type	Method	Description
void	planWalk(LogicalPlan plan, int planNumber, int planLevel, int numberOfSiblings, TextBasedLogicalPlanPrinterImpl.OpPrinter opPrinter, String rootOpIndentString)	This method recursively goes through a plan, and appends specific strings to a print stream.
void	print(LogicalPlan plan, PrintStream out)	Prints the given plan to the given stream.

Methods inherited from class se.liu.ida.hefquin.engine.queryplan.utils.BaseForTextBasedPlanPrinters

getIndentLevelString, getIndentLevelStringForDetail, printExpressions, printFederationMember, printLogicalOperatorBase, printSPARQLGraphPattern

Methods inherited from class java.lang.Object

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

Constructor Details

TextBasedLogicalPlanPrinterImpl

public TextBasedLogicalPlanPrinterImpl()

Method Details

print

public void print(LogicalPlan plan,
 PrintStream out)

Description copied from interface: LogicalPlanPrinter

Prints the given plan to the given stream.

Specified by:

print in interface LogicalPlanPrinter

planWalk

public void planWalk(LogicalPlan plan,
 int planNumber,
 int planLevel,
 int numberOfSiblings,
 TextBasedLogicalPlanPrinterImpl.OpPrinter opPrinter,
 String rootOpIndentString)

This method recursively goes through a plan, and appends specific strings to a print stream.

Parameters:

plan - The current plan (root operator) that will be formatted.

planNumber - The number of a plan in terms of its super plan.

planLevel - The depth of the root operator in a plan.

numberOfSiblings - The number of sibling plans of a plan.

opPrinter - The helper object for the printing.