simpledb

Class QueryPlanVisualizer

java.lang.Object

simpledb.QueryPlanVisualizer

public class QueryPlanVisualizer
extends java.lang.Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private static class	QueryPlanVisualizer.SubTreeDescriptor

Field Summary

Fields

Modifier and Type	Field and Description
(package private) static java.lang.String	GROUPBY
(package private) static java.lang.String	HASH_JOIN
(package private) static java.lang.String	JOIN
(package private) static java.lang.String	ORDERBY
(package private) static java.lang.String	PROJECT
(package private) static java.lang.String	RENAME
(package private) static java.lang.String	SCAN
(package private) static java.lang.String	SELECT
(package private) static java.lang.String	SPACE

Constructor Summary

Constructors

Constructor and Description
QueryPlanVisualizer()

Method Summary

Modifier and Type	Method and Description
private QueryPlanVisualizer.SubTreeDescriptor	buildTree(int queryPlanDepth, int currentDepth, DbIterator queryPlan, int currentStartPosition, int parentUpperBarStartShift)
private int	calculateQueryPlanTreeDepth(DbIterator root)
java.lang.String	getQueryPlanTree(DbIterator physicalPlan)
void	printQueryPlanTree(DbIterator physicalPlan, java.io.PrintStream out)
private void	printTree(QueryPlanVisualizer.SubTreeDescriptor root, char[] buffer, int width)

Methods inherited from class java.lang.Object

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

Field Detail

JOIN

static final java.lang.String JOIN

See Also:

Constant Field Values

HASH_JOIN

static final java.lang.String HASH_JOIN

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Constant Field Values

SELECT

static final java.lang.String SELECT

See Also:

Constant Field Values

PROJECT

static final java.lang.String PROJECT

See Also:

Constant Field Values

RENAME

static final java.lang.String RENAME

See Also:

Constant Field Values

SCAN

static final java.lang.String SCAN

See Also:

Constant Field Values

ORDERBY

static final java.lang.String ORDERBY

See Also:

Constant Field Values

GROUPBY

static final java.lang.String GROUPBY

See Also:

Constant Field Values

SPACE

static final java.lang.String SPACE

See Also:

Constant Field Values

Constructor Detail

QueryPlanVisualizer

public QueryPlanVisualizer()

Method Detail

calculateQueryPlanTreeDepth

private int calculateQueryPlanTreeDepth(DbIterator root)

buildTree

private QueryPlanVisualizer.SubTreeDescriptor buildTree(int queryPlanDepth,
                                                        int currentDepth,
                                                        DbIterator queryPlan,
                                                        int currentStartPosition,
                                                        int parentUpperBarStartShift)

printTree

private void printTree(QueryPlanVisualizer.SubTreeDescriptor root,
                       char[] buffer,
                       int width)

getQueryPlanTree

public java.lang.String getQueryPlanTree(DbIterator physicalPlan)

printQueryPlanTree

public void printQueryPlanTree(DbIterator physicalPlan,
                               java.io.PrintStream out)