PromiseLatch (kontraktor 3.00 API)

```
public class PromiseLatch<T>
extends Object
```
Created by ruedi on 27.07.14. Wraps a future and triggers it after having received N results (counter is counted down). Note that only the last result/error is actually transmitteed to the wrapped future. An implementation collecting intermediate results in a concurrentlist which then is used as a result could be implemented if needed. Usually used for pure signaling (so result is "void")

Constructors
Constructor and Description
`PromiseLatch(int counter)`
`PromiseLatch(int counter, IPromise<T> wrapped)`
`PromiseLatch(IPromise<T> wrapped)`
`PromiseLatch(IPromise<T> wrapped, int counter)`

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`void`	`countDown()`
`void`	`countDown(T result, Object error)`
`void`	`countUp(int amount)`
`int`	`getCount()` debug, cannot be used to implement reliable logic in a concurrent environment
`IPromise<T>`	`getPromise()`

public PromiseLatch(IPromise<T> wrapped)

public PromiseLatch(int counter,
                    IPromise<T> wrapped)

public PromiseLatch(IPromise<T> wrapped,
                    int counter)

public void countDown(T result,
                      Object error)

Class PromiseLatch<T>