Disable Qute Templating for AiService

[KaiSuchomel]

Hey,
I am getting the following Exception:

io.quarkus.qute.TemplateException: Parser error: empty expression found {API-Gruppe:}
	at io.quarkus.qute.TemplateException$Builder.build(TemplateException.java:173)
	at io.quarkus.qute.Parser.parseExpression(Parser.java:1019)
	at io.quarkus.qute.Parser.createPart(Parser.java:1053)
	at io.quarkus.qute.Parser.parseExpression(Parser.java:1035)
	at io.quarkus.qute.Parser.createExpression(Parser.java:1115)
	at io.quarkus.qute.Parser.flushTag(Parser.java:444)
	at io.quarkus.qute.Parser.tag(Parser.java:350)
	at io.quarkus.qute.Parser.processCharacter(Parser.java:251)
	at io.quarkus.qute.Parser.parse(Parser.java:158)
	at io.quarkus.qute.EngineImpl.parse(EngineImpl.java:66)
	at io.quarkus.qute.Engine.parse(Engine.java:37)
	at io.quarkiverse.langchain4j.QuarkusPromptTemplateFactory.create(QuarkusPromptTemplateFactory.java:45)
	at dev.langchain4j.model.input.PromptTemplate.<init>(PromptTemplate.java:61)
	at dev.langchain4j.model.input.PromptTemplate.<init>(PromptTemplate.java:50)
	at dev.langchain4j.model.input.PromptTemplate.from(PromptTemplate.java:114)
	at io.quarkiverse.langchain4j.runtime.aiservice.AiServiceMethodImplementationSupport.prepareUserMessage(AiServiceMethodImplementationSupport.java:1065)
	at io.quarkiverse.langchain4j.runtime.aiservice.AiServiceMethodImplementationSupport.doImplement(AiServiceMethodImplementationSupport.java:219)
	at io.quarkiverse.langchain4j.runtime.aiservice.AiServiceMethodImplementationSupport.implement(AiServiceMethodImplementationSupport.java:181)

I am doing Rag and in my documents that i ingest are sometimes texts like {xxx}.
This leads to the Exception above. The question now is can i disable the qute templating??
I have tried with (#1221)

quarkus.qute.strict-rendering=false
quarkus.qute.property-not-found-strategy=output-original

but with no effect.....

Example workflow:

• Question from User
• Send to EmbeddingStore
• Result is collected as String
• Send to an AIService with the following Prompt

 String fullPrompt = String.format("""
                Context:
                %s

                Question: %s
                """, context, question);

So far i tried to replace the Curly Braces with [] but in streaming (Multi) this is not working.

[geoand]

Interesting use case... We can't really turn off the Qute interpolation, as that would break the rest of the user message handling.

[mkouba]

Because it's a syntax/parser error. The quarkus.qute.property-not-found-strategy would only be applied if the expr is valid but no property is found, e.g. for expr {API-Gruppe} where API-Gruppe is not found.

[KaiSuchomel]

@mkouba Is there a chance to completely disable the qute templating here. I am currently replacing {} Braces with []....
Any Hint for a workaround???

[mkouba]

I'm sorry but I'm not aware of any workaround on the Qute level... just use the correct syntax 🤷.

[KaiSuchomel]

@geoand Any hint, because i am not sure how to use the "correct syntax". I am using the langchain4j extension that uses qute internal.

[geoand]

I don't see any way around the problem, to be honest, because the user message is always a templated string.