OperationStatistic

All Superinterfaces:

OperationObserver<T>, SourceStatistic<ChainedOperationObserver<? super T>>

All Known Implementing Classes:

AbstractOperationStatistic, GeneralOperationStatistic, MappedOperationStatistic, StatisticMapper, ZeroOperationStatistic
```
public interface OperationStatistic<T extends java.lang.Enum<T>>
extends OperationObserver<T>, SourceStatistic<ChainedOperationObserver<? super T>>
```

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`long`	`count(T type)`	Return the count of operations with the given type.
`default ValueStatistic<java.lang.Long>`	`statistic(java.util.Set<T> results)`
`default ValueStatistic<java.lang.Long>`	`statistic(T result)`	Return a `ValueStatistic` returning the count for the given result.
`long`	`sum()`
`long`	`sum(java.util.Set<T> types)`
`java.lang.Class<T>`	`type()`

Methods inherited from interface org.terracotta.statistics.observer.OperationObserver
begin, end

Methods inherited from interface org.terracotta.statistics.SourceStatistic
addDerivedStatistic, getDerivedStatistics, removeDerivedStatistic

- Method Detail
  - type
```
java.lang.Class<T> type()
```
  - statistic
```
default ValueStatistic<java.lang.Long> statistic(T result)
```
    Return a ValueStatistic returning the count for the given result.
    
    Parameters:
    
    result - the result of interest
    
    Returns:
    
    a ValueStatistic instance
  - statistic
```
default ValueStatistic<java.lang.Long> statistic(java.util.Set<T> results)
```
  - count
```
long count(T type)
```
    Return the count of operations with the given type.
    
    Parameters:
    
    type - the result type
    
    Returns:
    
    the operation count
  - sum
```
long sum(java.util.Set<T> types)
```
  - sum
```
long sum()
```