early prototype

[michalkozminski]

No description provided.

[anandbhaskaran]

[Sugesstion]

Instead of the shared model and then extending the other classes with complex inheritance. I think we could use composition (at least in the scope of our changes).

I see such an implementation with a util class here: https://github.com/beekpr/langchain4j/blob/main/langchain4j-ollama/src/main/java/dev/langchain4j/model/ollama/OllamaMessagesUtils.java

[michalkozminski]

@anandbhaskaran that was my first thought, but then I didn't see this pattern in other libraries, I'll check maybe how other integrations are written.

[anandbhaskaran]

Overall this PR will give us a working implementation. 🥳 Great job @michalkozminski

If this implementation is accepted or langchain implements the streaming model let's aim to sunset this fork (just to make sure that we are not stuck in an older version)