[jira] [Assigned] (CAMEL-25332) camel-langchain4j-ingest - Remove the class-name check for listener-wrapped models

["Jiri Ondrusek (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CAMEL-25332?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jiri Ondrusek reassigned CAMEL-25332:
-------------------------------------

    Assignee: Jiri Ondrusek

> camel-langchain4j-ingest - Remove the class-name check for listener-wrapped models
> ----------------------------------------------------------------------------------
>
>                 Key: CAMEL-25332
>                 URL: https://issues.apache.org/jira/browse/CAMEL-25332
>             Project: Camel
>          Issue Type: Task
>          Components: camel-langchain4j
>            Reporter: Jiri Ondrusek
>            Assignee: Jiri Ondrusek
>            Priority: Minor
>
> Follow-up to CAMEL-25027.
> With {{modality=media}} the producer refuses to start when the embedding model has {{EmbeddingModelListener}}s attached: LangChain4j 1.20 builds the listener context from each input's text ({{TextSegment.from(input.text())}}, both in the default {{EmbeddingModel.embed(EmbeddingRequest)}} and in {{ListeningEmbeddingModel}}), and a media input has no text, so every request would fail inside the library with "text cannot be null or blank".
> A model wrapped through {{addListener()}} becomes {{dev.langchain4j.model.embedding.ListeningEmbeddingModel}}, a package-private class that does not expose its listeners, so {{LangChain4jIngestProducer}} detects it by comparing the class name as a string, next to the {{listeners()}} check. The string comparison is a workaround for a library limitation, not a Camel rule.
> Once a LangChain4j release builds the listener context without input text, or returns the wrapped listeners from {{listeners()}}, remove the class-name check (and the refusal itself if listeners then work for media), the TODO comment next to it, and the sentence about listeners in the media section of the component documentation.



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