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.RealHashScanStatistics
    - - org.apache.derby.impl.sql.execute.rts.RealDistinctScanStatistics

All Implemented Interfaces:

ResultSetStatistics, XPLAINable
```
public class RealDistinctScanStatistics
extends RealHashScanStatistics
```
ResultSetStatistics implemenation for DistinctScanResultSet.

Field Summary
- Fields inherited from class org.apache.derby.impl.sql.execute.rts.RealHashScanStatistics
  hashKeyColumns, hashtableSize, indexName, isConstraint, isolationLevel, lockString, nextQualifiers, scanProperties, scanQualifiers, startPosition, stopPosition, tableName
- 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
RealDistinctScanStatistics(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, int hashtableSize, int[] hashKeyColumns, java.lang.String scanQualifiers, java.lang.String nextQualifiers, java.util.Properties scanProperties, java.lang.String startPosition, java.lang.String stopPosition, java.lang.String isolationLevel, java.lang.String lockString, double optimizerEstimatedRowCount, double optimizerEstimatedCost)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`accept(XPLAINVisitor visitor)`	This method gets called to let a visitor visit this XPLAINable object.
`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.
`java.lang.String`	`getRSXplainType()`
`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.
`java.lang.String`	`toString()`

Methods inherited from class org.apache.derby.impl.sql.execute.rts.RealHashScanStatistics
getResultSetDescriptor, getRSXplainDetails, getScanPropsDescriptor

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

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

RealDistinctScanStatistics

public RealDistinctScanStatistics(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,
                                  int hashtableSize,
                                  int[] hashKeyColumns,
                                  java.lang.String scanQualifiers,
                                  java.lang.String nextQualifiers,
                                  java.util.Properties scanProperties,
                                  java.lang.String startPosition,
                                  java.lang.String stopPosition,
                                  java.lang.String isolationLevel,
                                  java.lang.String lockString,
                                  double optimizerEstimatedRowCount,
                                  double optimizerEstimatedCost)

Method Detail
- getStatementExecutionPlanText
```
public java.lang.String getStatementExecutionPlanText(int depth)
```
  Return the statement execution plan as a String.
  
  Specified by:
  
  getStatementExecutionPlanText in interface ResultSetStatistics
  
  Overrides:
  
  getStatementExecutionPlanText in class RealHashScanStatistics
  
  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.
  
  Specified by:
  
  getScanStatisticsText in interface ResultSetStatistics
  
  Overrides:
  
  getScanStatisticsText in class RealHashScanStatistics
  
  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()
```
  Overrides:
  
  toString in class RealHashScanStatistics
- 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 RealHashScanStatistics
- getNodeName
```
public java.lang.String getNodeName()
```
  Format for display, a name for this node.
  
  Overrides:
  
  getNodeName in class RealHashScanStatistics
- 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 RealHashScanStatistics
- getRSXplainType
```
public java.lang.String getRSXplainType()
```
  Specified by:
  
  getRSXplainType in interface XPLAINable
  
  Overrides:
  
  getRSXplainType in class RealHashScanStatistics

Class RealDistinctScanStatistics

Field Summary

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

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

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

Constructor Summary

Method Summary

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

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

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

Methods inherited from class java.lang.Object

Constructor Detail

RealDistinctScanStatistics

Method Detail

getStatementExecutionPlanText

getScanStatisticsText

toString

getNodeOn

getNodeName

accept

getRSXplainType