WriteHandler (grizzly-framework 4.0.0 API)

```
public interface WriteHandler
```
Callback notification mechanism that signals the developer it's possible to write content.

Since:

2.2

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`onError(Throwable t)`	Invoked when an error occurs processing the request asynchronously.
`void`	`onWritePossible()`	This callback will be invoked when the requirements as dictated by writer are met.

- Method Detail
  - onWritePossible
```
void onWritePossible()
              throws Exception
```
    This callback will be invoked when the requirements as dictated by writer are met.
    
    Throws:
    
    Exception - Exception might be thrown by the custom handler code. This exception will be delegated for processing to onError(java.lang.Throwable).
  - onError
```
void onError(Throwable t)
```
    Invoked when an error occurs processing the request asynchronously.
    
    Parameters:
    
    t - cause of error