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

Class RealDistinctScalarAggregateStatistics

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.RealScalarAggregateStatistics

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

All Implemented Interfaces:

ResultSetStatistics, XPLAINable

public class RealDistinctScalarAggregateStatistics
extends RealScalarAggregateStatistics

ResultSetStatistics implemenation for DistinctScalarAggregateResultSet.

Field Summary

Fields inherited from class org.apache.derby.impl.sql.execute.rts.RealScalarAggregateStatistics

childResultSetStatistics, indexKeyOptimization, rowsInput

Fields inherited from class org.apache.derby.impl.sql.execute.rts.RealNoPutResultSetStatistics

indent, resultSetNumber, sourceDepth, subIndent

Fields inherited from class org.apache.derby.impl.sql.execute.rts.RealBasicNoPutResultSetStatistics

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

Constructor Summary

Constructors

Constructor	Description
RealDistinctScalarAggregateStatistics(int numOpens, int rowsSeen, int rowsFiltered, long constructorTime, long openTime, long nextTime, long closeTime, int resultSetNumber, int rowsInput, double optimizerEstimatedRowCount, double optimizerEstimatedCost, ResultSetStatistics childResultSetStatistics)

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	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.
String	toString()

Methods inherited from class org.apache.derby.impl.sql.execute.rts.RealScalarAggregateStatistics

getResultSetDescriptor, getRSXplainType

Methods inherited from class org.apache.derby.impl.sql.execute.rts.RealNoPutResultSetStatistics

initFormatInfo

Methods inherited from class org.apache.derby.impl.sql.execute.rts.RealBasicNoPutResultSetStatistics

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

Methods inherited from class java.lang.Object

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

Constructor Details

RealDistinctScalarAggregateStatistics

public RealDistinctScalarAggregateStatistics(int numOpens,
 int rowsSeen,
 int rowsFiltered,
 long constructorTime,
 long openTime,
 long nextTime,
 long closeTime,
 int resultSetNumber,
 int rowsInput,
 double optimizerEstimatedRowCount,
 double optimizerEstimatedCost,
 ResultSetStatistics childResultSetStatistics)

Method Details

getStatementExecutionPlanText

public String getStatementExecutionPlanText(int depth)

Return the statement execution plan as a String.

Specified by:

getStatementExecutionPlanText in interface ResultSetStatistics

Overrides:

getStatementExecutionPlanText in class RealScalarAggregateStatistics

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.

Specified by:

getScanStatisticsText in interface ResultSetStatistics

Overrides:

getScanStatisticsText in class RealScalarAggregateStatistics

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 RealScalarAggregateStatistics

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 RealScalarAggregateStatistics

Returns:

java.util.Vector A vector of objects.

getNodeName

public String getNodeName()

Format for display, a name for this node.

Overrides:

getNodeName in class RealScalarAggregateStatistics

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.

Specified by:

accept in interface XPLAINable

Overrides:

accept in class RealScalarAggregateStatistics

getRSXplainDetails

public String getRSXplainDetails()

Specified by:

getRSXplainDetails in interface XPLAINable

Overrides:

getRSXplainDetails in class RealBasicNoPutResultSetStatistics