Added chat with docs view

[samie]

• Parse documents using Apache Tika
• Create prompt with document content

Still in draft mode for discussion.

[samie]

@amithkoujalgi There is a problem with some models that the prompting does not work and I get the following stacktrace. For some models it works. Not sure if that is related to my prompt here and didn't look further yet. Any ideas?

Exception in thread "Thread-2482" java.lang.RuntimeException: java.lang.NullPointerException: Cannot invoke "io.github.ollama4j.models.chat.OllamaChatMessage.getToolCalls()" because the return value of "io.github.ollama4j.models.chat.OllamaChatResponseModel.getMessage()" is null
	at io.github.ollama4j.webui.service.ChatService.ask(ChatService.java:88)
	at io.github.ollama4j.webui.views.chat.ChatWithDocumentView.lambda$onSubmit$3(ChatWithDocumentView.java:192)
	at java.base/java.lang.Thread.run(Thread.java:840)
Caused by: java.lang.NullPointerException: Cannot invoke "io.github.ollama4j.models.chat.OllamaChatMessage.getToolCalls()" because the return value of "io.github.ollama4j.models.chat.OllamaChatResponseModel.getMessage()" is null
	at io.github.ollama4j.models.request.OllamaChatEndpointCaller.callSync(OllamaChatEndpointCaller.java:121)
	at io.github.ollama4j.models.request.OllamaChatEndpointCaller.call(OllamaChatEndpointCaller.java:76)
	at io.github.ollama4j.OllamaAPI.chatStreaming(OllamaAPI.java:816)
	at io.github.ollama4j.OllamaAPI.chat(OllamaAPI.java:789)
	at io.github.ollama4j.webui.service.ChatService.ask(ChatService.java:84)
	... 2 more

[amithkoujalgi]

@samie It seems like the issue is coming from the OllamaChatResponseModel.getMessage() method in Ollama4j library, where the model didn't return a message. I think throwing an NPE wouldn't be the right approach if the model doesn't respond. Instead, we should just return an empty string.

Also, could you try updating to the latest version of Ollama4j? There were a few fixes implemented, so it's possible this issue is already addressed in the update. I can't recall the specific fixes since I’ve been juggling multiple projects.