TileComputationObserver (SNAP Engine API)

java.lang.Object
- org.esa.snap.core.gpf.monitor.TileComputationObserver

Direct Known Subclasses:

OperatorRuntimeReport, TileComputationEventLogger, TileUsageReportGenerator
```
public abstract class TileComputationObserver
extends Object
```
Gets notified once a new tile has been computed.
The framework uses observers as follows:
1. start() is called only once before any other method is called.
2. tileComputed(TileComputationEvent) is called for each tile computed by any GPF Operator.
3. stop() is called after a Product has been fully written using the WriteOp operator.
Since:

BEAM 4.9

Constructor Summary

Constructors
Constructor Description

TileComputationObserver()

Method Summary

All Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`Logger`	`getLogger()`
`void`	`setLogger(Logger logger)`
`abstract void`	`start()`	Starts observation of tile computation events.
`abstract void`	`stop()`	Stops observation of tile computation events.
`abstract void`	`tileComputed(TileComputationEvent event)`	Called each time a tile has been computed.

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

- Constructor Detail
  - TileComputationObserver
```
public TileComputationObserver()
```
- Method Detail
  - getLogger
```
public final Logger getLogger()
```
    Returns:
    
    A logger.
  - setLogger
```
public final void setLogger(Logger logger)
```
  - start
```
public abstract void start()
```
    Starts observation of tile computation events.
  - tileComputed
```
public abstract void tileComputed(TileComputationEvent event)
```
    Called each time a tile has been computed. This method is usually called asynchronously by multiple threads. It should perform very fast.
    
    Parameters:
    
    event - The tile computation event.
  - stop
```
public abstract void stop()
```
    Stops observation of tile computation events.