Nested Classes
Modifier and Type	Class	Description
`protected class`	`AbstractViewerService.ViewerProcess<R extends Serializable>`	This class handles the execution of a `AbstractViewerService.ViewerTreatment`.
`protected static interface`	`AbstractViewerService.ViewerTreatment<R>`

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected File`	`changeFileExtension(File file, String fileExtension)`	Changes the extension of a file
`protected File`	`generateTmpFile(ViewerContext viewerContext, String fileExtension)`	Generate a tmp file
`protected <R extends Serializable> AbstractViewerService.ViewerProcess<R>`	`process(String processName, AbstractViewerService.ViewerTreatment<R> viewerTreatment)`	This method permits to start the setting of a `AbstractViewerService.ViewerTreatment`. It manages also a cache mechanism in order to avoid taking too much resources at a same time and also in order to preserve memory space of filesystem.

Constructor Detail
- AbstractViewerService
```
public AbstractViewerService()
```

protected File generateTmpFile(ViewerContext viewerContext,
                               String fileExtension)

Generate a tmp file

protected File changeFileExtension(File file,
                                   String fileExtension)

Changes the extension of a file

Class AbstractViewerService