Class RealNestedLoopJoinStatistics

java.lang.Object

org.apache.derby.impl.sql.execute.rts.RealBasicNoPutResultSetStatistics

org.apache.derby.impl.sql.execute.rts.RealNoPutResultSetStatistics

org.apache.derby.impl.sql.execute.rts.RealJoinResultSetStatistics

org.apache.derby.impl.sql.execute.rts.RealNestedLoopJoinStatistics

All Implemented Interfaces:

ResultSetStatistics, XPLAINable

Direct Known Subclasses:

RealHashJoinStatistics, RealNestedLoopLeftOuterJoinStatistics

public class RealNestedLoopJoinStatistics
extends RealJoinResultSetStatistics

ResultSetStatistics implemenation for NestedLoopJoinResultSet.

Field Summary

Fields

Modifier and Type	Field	Description
ResultSetStatistics	leftResultSetStatistics
protected String	nodeName
boolean	oneRowRightSide
String	resultSetName
ResultSetStatistics	rightResultSetStatistics

Fields inherited from class RealJoinResultSetStatistics

restrictionTime, rowsReturned, rowsSeenLeft, rowsSeenRight, userSuppliedOptimizerOverrides

Fields inherited from class RealNoPutResultSetStatistics

indent, resultSetNumber, sourceDepth, subIndent

Fields inherited from class RealBasicNoPutResultSetStatistics

closeTime, constructorTime, inspectDesc, inspectNum, inspectOverall, nextTime, numOpens, openTime, optimizerEstimatedCost, optimizerEstimatedRowCount, rowsFiltered, rowsSeen

Constructor Summary

Constructors

Constructor

Description

RealNestedLoopJoinStatistics(int numOpens, int rowsSeen, int rowsFiltered, long constructorTime, long openTime, long nextTime, long closeTime, int resultSetNumber, int rowsSeenLeft, int rowsSeenRight, int rowsReturned, long restrictionTime, boolean oneRowRightSide, double optimizerEstimatedRowCount, double optimizerEstimatedCost, String userSuppliedOptimizerOverrides, ResultSetStatistics leftResultSetStatistics, ResultSetStatistics rightResultSetStatistics)

Method Summary

Modifier and Type	Method	Description
void	accept(XPLAINVisitor visitor)	This method gets called to let a visitor visit this XPLAINable object.
Vector<ResultSetStatistics>	getChildren()	Get the objects to be displayed when this tree object is expanded.
String	getNodeName()	Format for display, a name for this node.
String	getRSXplainDetails()
String	getRSXplainType()
String	getScanStatisticsText(String tableName, int depth)	Return information on the scan nodes from the statement execution plan as a String.
String	getStatementExecutionPlanText(int depth)	Return the statement execution plan as a String.
protected void	setNames()
String	toString()

Methods inherited from class RealJoinResultSetStatistics

getResultSetDescriptor, getResultSetTimingsDescriptor

Methods inherited from class RealNoPutResultSetStatistics

initFormatInfo

Methods inherited from class RealBasicNoPutResultSetStatistics

dumpEstimatedCosts, dumpTimeStats, getChildrenTime, getEstimatedRowCount, getNodeOn, getNodeTime, getScanPropsDescriptor, getSortPropsDescriptor, getTotalTime

Methods inherited from class Object

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

Field Details

oneRowRightSide

public boolean oneRowRightSide

leftResultSetStatistics

public ResultSetStatistics leftResultSetStatistics

rightResultSetStatistics

public ResultSetStatistics rightResultSetStatistics

nodeName

protected String nodeName

resultSetName

public String resultSetName

Constructor Details

RealNestedLoopJoinStatistics

public RealNestedLoopJoinStatistics(int numOpens,
 int rowsSeen,
 int rowsFiltered,
 long constructorTime,
 long openTime,
 long nextTime,
 long closeTime,
 int resultSetNumber,
 int rowsSeenLeft,
 int rowsSeenRight,
 int rowsReturned,
 long restrictionTime,
 boolean oneRowRightSide,
 double optimizerEstimatedRowCount,
 double optimizerEstimatedCost,
 String userSuppliedOptimizerOverrides,
 ResultSetStatistics leftResultSetStatistics,
 ResultSetStatistics rightResultSetStatistics)

Method Details

getStatementExecutionPlanText

public String getStatementExecutionPlanText(int depth)

Return the statement execution plan as a String.

Parameters:

depth - Indentation level.

Returns:

String The statement execution plan as a String.

getScanStatisticsText

public String getScanStatisticsText(String tableName,
 int depth)

Return information on the scan nodes from the statement execution plan as a String.

Parameters:

tableName - if not NULL then print information for this table only

depth - Indentation level.

Returns:

String The information on the scan nodes from the statement execution plan as a String.

toString

public String toString()

Overrides:

toString in class Object

getChildren

public Vector<ResultSetStatistics> getChildren()

Description copied from class: RealBasicNoPutResultSetStatistics

Get the objects to be displayed when this tree object is expanded.

The objects returned can be of any type, including addtional Inspectables.

Overrides:

getChildren in class RealBasicNoPutResultSetStatistics

Returns:

java.util.Vector A vector of objects.

getNodeName

public String getNodeName()

Format for display, a name for this node.

Overrides:

getNodeName in class RealJoinResultSetStatistics

setNames

protected void setNames()

accept

public void accept(XPLAINVisitor visitor)

Description copied from interface: XPLAINable

This method gets called to let a visitor visit this XPLAINable object. The general contract is to implement pre-order, depth-first traversal to produce a predictable traversal behaviour.

getRSXplainType

public String getRSXplainType()

getRSXplainDetails

public String getRSXplainDetails()

Specified by:

getRSXplainDetails in interface XPLAINable

Overrides:

getRSXplainDetails in class RealBasicNoPutResultSetStatistics