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

Class RealJoinResultSetStatistics

java.lang.Object

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

All Implemented Interfaces:

ResultSetStatistics, XPLAINable

Direct Known Subclasses:

RealNestedLoopJoinStatistics

public abstract class RealJoinResultSetStatistics
extends java.lang.Object

ResultSetStatistics implemenation for JoinResultSet.

Field Summary

Fields

Modifier and Type	Field and Description
long	closeTime
long	constructorTime
java.lang.String	inspectDesc
long	inspectNum
long	inspectOverall
long	nextTime
int	numOpens
long	openTime
double	optimizerEstimatedCost
double	optimizerEstimatedRowCount
long	restrictionTime
int	resultSetNumber
int	rowsFiltered
int	rowsReturned
int	rowsSeen
int	rowsSeenLeft
int	rowsSeenRight
java.lang.String	userSuppliedOptimizerOverrides

Constructor Summary

Constructors

Constructor and Description
RealJoinResultSetStatistics(int numOpens, int rowsSeen, int rowsFiltered, long constructorTime, long openTime, long nextTime, long closeTime, int resultSetNumber, int rowsSeenLeft, int rowsSeenRight, int rowsReturned, long restrictionTime, double optimizerEstimatedRowCount, double optimizerEstimatedCost, java.lang.String userSuppliedOptimizerOverrides)

Method Summary

Modifier and Type	Method and Description
java.util.Vector<ResultSetStatistics>	getChildren() Get the objects to be displayed when this tree object is expanded.
long	getChildrenTime() Return the time for all operations performed by the children of this node.
double	getEstimatedRowCount() Get the estimated row count for the number of rows returned by the associated query or statement.
java.lang.String	getNodeName() Format for display, a name for this node.
java.lang.String	getNodeOn() If this node is on a database item (like a table or an index), then provide a string that describes the on item.
long	getNodeTime() Return the time for all operations performed by this node, but not the time for the children of this node.
java.lang.Object	getResultSetDescriptor(java.lang.Object rsID, java.lang.Object parentID, java.lang.Object scanID, java.lang.Object sortID, java.lang.Object stmtID, java.lang.Object timingID)
java.lang.Object	getResultSetTimingsDescriptor(java.lang.Object timingID)
java.lang.String	getRSXplainDetails()
java.lang.Object	getScanPropsDescriptor(java.lang.Object UUID)
java.lang.Object	getSortPropsDescriptor(java.lang.Object UUID)
long	getTotalTime() Return the time for all operations performed by this node, and the children of this node.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.derby.iapi.sql.execute.ResultSetStatistics

getScanStatisticsText, getStatementExecutionPlanText

Methods inherited from interface org.apache.derby.iapi.sql.execute.xplain.XPLAINable

accept, getRSXplainType

Field Detail

rowsSeenLeft

public int rowsSeenLeft

rowsSeenRight

public int rowsSeenRight

rowsReturned

public int rowsReturned

restrictionTime

public long restrictionTime

userSuppliedOptimizerOverrides

public java.lang.String userSuppliedOptimizerOverrides

resultSetNumber

public int resultSetNumber

numOpens

public int numOpens

rowsSeen

public int rowsSeen

rowsFiltered

public int rowsFiltered

constructorTime

public long constructorTime

openTime

public long openTime

nextTime

public long nextTime

closeTime

public long closeTime

inspectOverall

public long inspectOverall

inspectNum

public long inspectNum

inspectDesc

public java.lang.String inspectDesc

optimizerEstimatedRowCount

public double optimizerEstimatedRowCount

optimizerEstimatedCost

public double optimizerEstimatedCost

Constructor Detail

RealJoinResultSetStatistics

public RealJoinResultSetStatistics(int numOpens,
                                   int rowsSeen,
                                   int rowsFiltered,
                                   long constructorTime,
                                   long openTime,
                                   long nextTime,
                                   long closeTime,
                                   int resultSetNumber,
                                   int rowsSeenLeft,
                                   int rowsSeenRight,
                                   int rowsReturned,
                                   long restrictionTime,
                                   double optimizerEstimatedRowCount,
                                   double optimizerEstimatedCost,
                                   java.lang.String userSuppliedOptimizerOverrides)

Method Detail

getNodeName

public java.lang.String getNodeName()

Format for display, a name for this node.

getResultSetDescriptor

public java.lang.Object getResultSetDescriptor(java.lang.Object rsID,
                                               java.lang.Object parentID,
                                               java.lang.Object scanID,
                                               java.lang.Object sortID,
                                               java.lang.Object stmtID,
                                               java.lang.Object timingID)

Specified by:

getResultSetDescriptor in interface XPLAINable

getResultSetTimingsDescriptor

public java.lang.Object getResultSetTimingsDescriptor(java.lang.Object timingID)

Specified by:

getResultSetTimingsDescriptor in interface XPLAINable

getChildren

public java.util.Vector<ResultSetStatistics> getChildren()

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

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

Returns:

java.util.Vector A vector of objects.

getTotalTime

public long getTotalTime()

Return the time for all operations performed by this node, and the children of this node. The times included open, next, and close.

getChildrenTime

public long getChildrenTime()

Return the time for all operations performed by the children of this node.

getNodeTime

public long getNodeTime()

Return the time for all operations performed by this node, but not the time for the children of this node.

getNodeOn

public java.lang.String getNodeOn()

If this node is on a database item (like a table or an index), then provide a string that describes the on item.

getEstimatedRowCount

public double getEstimatedRowCount()

Get the estimated row count for the number of rows returned by the associated query or statement.

Specified by:

getEstimatedRowCount in interface ResultSetStatistics

Returns:

The estimated number of rows returned by the associated query or statement.

getRSXplainDetails

public java.lang.String getRSXplainDetails()

Specified by:

getRSXplainDetails in interface XPLAINable

getSortPropsDescriptor

public java.lang.Object getSortPropsDescriptor(java.lang.Object UUID)

Specified by:

getSortPropsDescriptor in interface XPLAINable

getScanPropsDescriptor

public java.lang.Object getScanPropsDescriptor(java.lang.Object UUID)

Specified by:

getScanPropsDescriptor in interface XPLAINable