RealScalarAggregateStatistics (Apache Derby V10.14 Internals)

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

All Implemented Interfaces:

ResultSetStatistics, XPLAINable

Direct Known Subclasses:

RealDistinctScalarAggregateStatistics
```
public class RealScalarAggregateStatistics
extends RealNoPutResultSetStatistics
```
ResultSetStatistics implemenation for ScalarAggregateResultSet.

Field Summary

Fields
Modifier and Type Field Description

ResultSetStatistics childResultSetStatistics

boolean indexKeyOptimization

int rowsInput
- Fields inherited from class org.apache.derby.impl.sql.execute.rts.RealBasicNoPutResultSetStatistics
  closeTime, constructorTime, inspectDesc, inspectNum, inspectOverall, nextTime, numOpens, openTime, optimizerEstimatedCost, optimizerEstimatedRowCount, rowsFiltered, rowsSeen
- Fields inherited from class org.apache.derby.impl.sql.execute.rts.RealNoPutResultSetStatistics
  indent, resultSetNumber, sourceDepth, subIndent

Fields
Modifier and Type	Field	Description
`ResultSetStatistics`	`childResultSetStatistics`
`boolean`	`indexKeyOptimization`
`int`	`rowsInput`

Constructor Summary

Constructors
Constructor	Description
`RealScalarAggregateStatistics(int numOpens, int rowsSeen, int rowsFiltered, long constructorTime, long openTime, long nextTime, long closeTime, int resultSetNumber, boolean indexKeyOptimization, int rowsInput, double optimizerEstimatedRowCount, double optimizerEstimatedCost, ResultSetStatistics childResultSetStatistics)`

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.util.Vector<ResultSetStatistics>`	`getChildren()`	Get the objects to be displayed when this tree object is expanded.
`java.lang.String`	`getNodeName()`	Format for display, a name for 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.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 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from class org.apache.derby.impl.sql.execute.rts.RealBasicNoPutResultSetStatistics
dumpEstimatedCosts, dumpTimeStats, getChildrenTime, getEstimatedRowCount, getNodeOn, getNodeTime, getResultSetTimingsDescriptor, getRSXplainDetails, getScanPropsDescriptor, getSortPropsDescriptor, getTotalTime

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

Field Detail

rowsInput
```
public int rowsInput
```

indexKeyOptimization
```
public boolean indexKeyOptimization
```

childResultSetStatistics

public ResultSetStatistics childResultSetStatistics

Constructor Detail

RealScalarAggregateStatistics

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

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 execution 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()
```
  Overrides:
  
  toString in class java.lang.Object
- getChildren
```
public java.util.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 RealBasicNoPutResultSetStatistics
  
  Returns:
  
  java.util.Vector A vector of objects.
- getNodeName
```
public java.lang.String getNodeName()
```
  Format for display, a name for this node.
  
  Specified by:
  
  getNodeName 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 java.lang.String getRSXplainType()
```
- 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
  
  Overrides:
  
  getResultSetDescriptor in class RealBasicNoPutResultSetStatistics

Class RealScalarAggregateStatistics

Field Summary

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

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

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

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

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

Field Detail

rowsInput

indexKeyOptimization

childResultSetStatistics

Constructor Detail

RealScalarAggregateStatistics

Method Detail

getStatementExecutionPlanText

getScanStatisticsText

toString

getChildren

getNodeName

accept

getRSXplainType

getResultSetDescriptor