ModelStreamManager (MPS.Core (JetBrains MPS 2019.1.0))

All Known Implementing Classes:

DefaultStreamManager, DeployedStreamManager
```
public interface ModelStreamManager
```
PROVISIONAL API, likely to become generic and move somewhere else (like smodel module). Facility to keep (persist) data associated with a model. It's quite common task to keep information that is associated with a given model but is not substantial/essential part of the model, or is specific to platform/implementation/process. We keep this in a form of named streams. Different aspects/locations are explicit now, however, they might become (or get extended with) generic accessor (once we need extensible set of locations). With support for multiple generation targets, we would likely add appropriate accessors with target identification, however, at the moment, with single generation target this doesn't seem reasonable. At the moment primary purpose is to abstract away output/cache location so that rest of the code doesn't care whether it shall call TextGenUtil.getOutputDir, AbstractModule.getOutputPath or FileGenerationUtil.getDefaultOutputDir(), and callee code have control over locations queried.

Nested Class Summary

Nested Classes
Modifier and Type Interface Description

static interface ModelStreamManager.Provider
Knows where data associated with the model is kept.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`MultiStreamDataSource`	`getCachesLocation()`	Access location where generated cache files for the model reside.
`SModelReference`	`getModel()`
`MultiStreamDataSource`	`getOutputLocation()`	Access location where generated files for the model reside.

- Method Detail
  - getModel
```
SModelReference getModel()
```
    Returns:
    
    model this stream manager is associated with
  - getOutputLocation
```
@NotNull
MultiStreamDataSource getOutputLocation()
```
    Access location where generated files for the model reside. IMPLEMENTATION NOTE: Now, for BL/Java this is equivalent to a folder under source_gen/ with a name corresponding to model long name
    
    Returns:
    
    named stream accessor
  - getCachesLocation
```
MultiStreamDataSource getCachesLocation()
```
    Access location where generated cache files for the model reside. IMPLEMENTATION NOTE: Now, for BL/Java this is equivalent to a folder under source_gen.caches/ with a name corresponding to model long name
    
    Returns:
    
    named stream accessor