Class RealTableScanStatistics

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.RealTableScanStatistics

All Implemented Interfaces:

ResultSetStatistics, XPLAINable

public class RealTableScanStatistics
extends RealNoPutResultSetStatistics

ResultSetStatistics implemenation for TableScanResultSet.

Field Summary

Fields

Modifier and Type	Field	Description
boolean	coarserLock
int	fetchSize
String	indexName
boolean	isConstraint
String	isolationLevel
String	lockString
String	qualifiers
FormatableProperties	scanProperties
String	startPosition
String	stopPosition
String	tableName
String	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

RealTableScanStatistics(int numOpens, int rowsSeen, int rowsFiltered, long constructorTime, long openTime, long nextTime, long closeTime, int resultSetNumber, String tableName, String userSuppliedOptimizerOverrides, String indexName, boolean isConstraint, String qualifiers, Properties scanProperties, String startPosition, String stopPosition, String isolationLevel, String lockString, int fetchSize, boolean coarserLock, double optimizerEstimatedRowCount, double optimizerEstimatedCost)

Method Summary

Modifier and Type	Method	Description
void	accept(XPLAINVisitor visitor)	This method gets called to let a visitor visit this XPLAINable object.
String	getNodeName()	Format for display, a name for this node.
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.
Object	getResultSetDescriptor(Object rsID, Object parentID, Object scanID, Object sortID, Object stmtID, Object timingID)
String	getRSXplainDetails()
String	getRSXplainType()
Object	getScanPropsDescriptor(Object scanPropsID)
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 RealNoPutResultSetStatistics

initFormatInfo

Methods inherited from class RealBasicNoPutResultSetStatistics

dumpEstimatedCosts, dumpTimeStats, getChildren, getChildrenTime, getEstimatedRowCount, getNodeTime, getResultSetTimingsDescriptor, getSortPropsDescriptor, getTotalTime

Methods inherited from class Object

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

Field Details

isConstraint

public boolean isConstraint

coarserLock

public boolean coarserLock

fetchSize

public int fetchSize

isolationLevel

public String isolationLevel

tableName

public String tableName

userSuppliedOptimizerOverrides

public String userSuppliedOptimizerOverrides

indexName

public String indexName

lockString

public String lockString

qualifiers

public String qualifiers

startPosition

public String startPosition

stopPosition

public String stopPosition

scanProperties

public FormatableProperties scanProperties

Constructor Details

RealTableScanStatistics

public RealTableScanStatistics(int numOpens,
 int rowsSeen,
 int rowsFiltered,
 long constructorTime,
 long openTime,
 long nextTime,
 long closeTime,
 int resultSetNumber,
 String tableName,
 String userSuppliedOptimizerOverrides,
 String indexName,
 boolean isConstraint,
 String qualifiers,
 Properties scanProperties,
 String startPosition,
 String stopPosition,
 String isolationLevel,
 String lockString,
 int fetchSize,
 boolean coarserLock,
 double optimizerEstimatedRowCount,
 double optimizerEstimatedCost)

Method Details

getStatementExecutionPlanText

public String getStatementExecutionPlanText(int depth)

Return the statement execution plan as a String.

Parameters:

depth - Indentation level

Returns:

String The statement executio 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

getNodeName

public String getNodeName()

Format for display, a name for this node.

Specified by:

getNodeName in class RealBasicNoPutResultSetStatistics

getNodeOn

public 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.

Overrides:

getNodeOn in class RealBasicNoPutResultSetStatistics

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

getScanPropsDescriptor

public Object getScanPropsDescriptor(Object scanPropsID)

Specified by:

getScanPropsDescriptor in interface XPLAINable

Overrides:

getScanPropsDescriptor in class RealBasicNoPutResultSetStatistics

getResultSetDescriptor

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

Specified by:

getResultSetDescriptor in interface XPLAINable

Overrides:

getResultSetDescriptor in class RealBasicNoPutResultSetStatistics