GenericPreparedStatement.RowCountStatistics (Apache Derby V10.14 Internals)

java.lang.Object
- org.apache.derby.impl.sql.GenericPreparedStatement.RowCountStatistics

Enclosing class:

GenericPreparedStatement
```
private static class GenericPreparedStatement.RowCountStatistics
extends java.lang.Object
```
This class holds information about stale plan check interval, execution count and row count statistics for a GenericPreparedStatement. The fields and methods should ideally live in GenericPreparedStatement, not in a separate class. However, triggers clone the GPS on each execution, which means the statistics would be reset on each execution if they lived directly inside GPS. Instead, keep the statistics in an object that can be shared between multiple GPS instances when they are cloned.

Field Summary

Fields
Modifier and Type Field Description

private int executionCount

private java.util.ArrayList<java.lang.Long> rowCounts

private int stalePlanCheckInterval

Constructor Summary

Constructors
Modifier Constructor Description

private RowCountStatistics()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`(package private) long`	`getInitialRowCount(int rsNum, long rowCount)`
`(package private) int`	`getStalePlanCheckInterval()`
`(package private) int`	`incrementExecutionCount()`
`(package private) void`	`reset()`	Reset all the row count statistics.
`(package private) void`	`setStalePlanCheckInterval(int interval)`

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

- Field Detail
  - stalePlanCheckInterval
```
private int stalePlanCheckInterval
```
  - executionCount
```
private int executionCount
```
  - rowCounts
```
private java.util.ArrayList<java.lang.Long> rowCounts
```
- Constructor Detail
  - RowCountStatistics
```
private RowCountStatistics()
```
- Method Detail
  - incrementExecutionCount
```
int incrementExecutionCount()
```
    See Also:
    
    ExecPreparedStatement.incrementExecutionCount()
  - getInitialRowCount
```
long getInitialRowCount(int rsNum,
                        long rowCount)
```
    See Also:
    
    ExecPreparedStatement.getInitialRowCount(int, long)
  - setStalePlanCheckInterval
```
void setStalePlanCheckInterval(int interval)
```
    See Also:
    
    ExecPreparedStatement.setStalePlanCheckInterval(int)
  - getStalePlanCheckInterval
```
int getStalePlanCheckInterval()
```
    See Also:
    
    ExecPreparedStatement.getStalePlanCheckInterval()
  - reset
```
void reset()
```
    Reset all the row count statistics.