SourceStatistic

Type Parameters:

T - Supported derived observer type

All Known Subinterfaces:

OperationStatistic<T>

All Known Implementing Classes:

AbstractOperationStatistic, AbstractSourceStatistic, GeneralOperationStatistic, MappedOperationStatistic, OperationResultFilter, OperationResultSampler, StatisticMapper, ZeroOperationStatistic
```
public interface SourceStatistic<T extends ChainedObserver>
```
Source statistic implementations support derived statistics.
Derived statistics can be registered and will then receive the relevant observer calls to update their status.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`addDerivedStatistic(T derived)`	Register the given `Observer` to be called by this `SourceStatistic`
`java.util.Collection<T>`	`getDerivedStatistics()`	Retrieve all registered statistics.
`void`	`removeDerivedStatistic(T derived)`	Remove the given registered `Observer` from this `SourceStatistic`.

- Method Detail
  - addDerivedStatistic
```
void addDerivedStatistic(T derived)
```
    Register the given Observer to be called by this SourceStatistic
    
    Parameters:
    
    derived - statistic to be registered
  - removeDerivedStatistic
```
void removeDerivedStatistic(T derived)
```
    Remove the given registered Observer from this SourceStatistic.
    
    Parameters:
    
    derived - statistic to be removed
  - getDerivedStatistics
```
java.util.Collection<T> getDerivedStatistics()
```
    Retrieve all registered statistics.
    
    Returns:
    
    an unmodifiable collection of all derived statistics