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

java.lang.Object
  extended byorg.apache.derby.impl.sql.execute.rts.RealBasicNoPutResultSetStatistics
      extended byorg.apache.derby.impl.sql.execute.rts.RealNoPutResultSetStatistics
          extended byorg.apache.derby.impl.sql.execute.rts.RealTableScanStatistics
All Implemented Interfaces:
ResultSetStatistics

public class RealTableScanStatistics
extends RealNoPutResultSetStatistics

ResultSetStatistics implemenation for TableScanResultSet.

Author:
jerry

Field Summary
 long closeTime
           
 boolean coarserLock
           
 long constructorTime
           
 int fetchSize
           
protected  java.lang.String indent
           
 java.lang.String indexName
           
 java.lang.String inspectDesc
           
 long inspectNum
           
 long inspectOverall
           
 boolean isConstraint
           
 java.lang.String isolationLevel
           
 java.lang.String lockString
           
 long nextTime
           
 int numOpens
           
 long openTime
           
 double optimizerEstimatedCost
           
 double optimizerEstimatedRowCount
           
 java.lang.String qualifiers
           
 int resultSetNumber
           
 int rowsFiltered
           
 int rowsSeen
           
 FormatableProperties scanProperties
           
protected  int sourceDepth
           
 java.lang.String startPosition
           
 java.lang.String stopPosition
           
protected  java.lang.String subIndent
           
 java.lang.String tableName
           
 
Constructor Summary
RealTableScanStatistics(int numOpens, int rowsSeen, int rowsFiltered, long constructorTime, long openTime, long nextTime, long closeTime, int resultSetNumber, java.lang.String tableName, java.lang.String indexName, boolean isConstraint, java.lang.String qualifiers, java.util.Properties scanProperties, java.lang.String startPosition, java.lang.String stopPosition, java.lang.String isolationLevel, java.lang.String lockString, int fetchSize, boolean coarserLock, double optimizerEstimatedRowCount, double optimizerEstimatedCost)
           
 
Method Summary
protected  java.lang.String dumpEstimatedCosts(java.lang.String subIndent)
          Dump out the estimated cost information
protected  java.lang.String dumpTimeStats(java.lang.String indent, java.lang.String subIndent)
          Dump out the time information for run time stats.
 java.util.Vector 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.String getScanStatisticsText(java.lang.String tableName, int depth)
          Return information on the scan nodes from the statement execution plan as a String.
 java.lang.String getStatementExecutionPlanText(int depth)
          Return the statement execution plan as a String.
 long getTotalTime()
          Return the time for all operations performed by this node, and the children of this node.
protected  void initFormatInfo(int depth)
          Initialize the format info for run time statistics.
 java.lang.String toString()
           
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Field Detail

isConstraint

public boolean isConstraint

coarserLock

public boolean coarserLock

fetchSize

public int fetchSize

isolationLevel

public java.lang.String isolationLevel

tableName

public java.lang.String tableName

indexName

public java.lang.String indexName

lockString

public java.lang.String lockString

qualifiers

public java.lang.String qualifiers

startPosition

public java.lang.String startPosition

stopPosition

public java.lang.String stopPosition

scanProperties

public FormatableProperties scanProperties

resultSetNumber

public int resultSetNumber

indent

protected java.lang.String indent

subIndent

protected java.lang.String subIndent

sourceDepth

protected int sourceDepth

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

RealTableScanStatistics

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

getStatementExecutionPlanText

public java.lang.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 java.lang.String getScanStatisticsText(java.lang.String tableName,
                                              int depth)
Return information on the scan nodes from the statement execution plan as a String.

Parameters:
depth - Indentation level.
tableName - if not NULL then print information for this table only
Returns:
String The information on the scan nodes from the statement execution plan as a String.

toString

public java.lang.String toString()

getNodeName

public java.lang.String getNodeName()
Format for display, a name for this node.

Specified by:
getNodeName in class RealBasicNoPutResultSetStatistics

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.

Overrides:
getNodeOn in class RealBasicNoPutResultSetStatistics

initFormatInfo

protected void initFormatInfo(int depth)
Initialize the format info for run time statistics.


dumpTimeStats

protected final java.lang.String dumpTimeStats(java.lang.String indent,
                                               java.lang.String subIndent)
Dump out the time information for run time stats.

Returns:
Nothing.

dumpEstimatedCosts

protected final java.lang.String dumpEstimatedCosts(java.lang.String subIndent)
Dump out the estimated cost information

Returns:
Nothing.

getChildren

public java.util.Vector 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.


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.

Built on Tue 2006-10-10 19:23:47+0200, from revision exported

Apache Derby V10.1 Engine Documentation - Copyright © 1997,2005 The Apache Software Foundation or its licensors, as applicable.