Clojure Q&A - Recent questions tagged java.data

clojure.java.data/from-java throws stack overflow

Mon, 10 Feb 2025 10:39:57 +0000

I use the following function to get scrollpoints from a client io.qdrant.client.QdrantClient

(def client ...) => io.qdrant.client.QdrantClient

(defn make-scroll-points [collection-name k v]
  (builder/to-java Points$ScrollPoints
                   Points$ScrollPoints$Builder
                   (Points$ScrollPoints/newBuilder)
                   {:collectionName collection-name
                    :filter (builder/to-java Points$Filter
                                             Points$Filter$Builder
                                             (Points$Filter/newBuilder)
                                             {:addMust (ConditionFactory/matchKeyword (name k) (str v))}
                                             {})
                    :limit 1
                    :withPayload (WithPayloadSelectorFactory/enable true)}
                   {}))

(def scroll-points (qdrant/make-scroll-points  <collection-name> :user "user-1"))

(def scrolled (.get (.scrollAsync client scroll-points)))

(bean scrolled)

works, but when i do

(clojure.java.data/from-java scrolled)

I get a stackoverflow error

clojure.java.data.builder fails with overloaded setter

Wed, 22 Jan 2025 20:27:39 +0000

Trying to run make-chat-model

(ns problem.problem
  (:require [clojure.java.data.builder :as builder])
  (:import (dev.langchain4j.model.openai OpenAiChatModel)
           (dev.langchain4j.model.openai OpenAiChatModel$OpenAiChatModelBuilder)))

(defn make-chat-model []
  (builder/to-java
    OpenAiChatModel 
    OpenAiChatModel$OpenAiChatModelBuilder
    (OpenAiChatModel/builder)
    {:baseUrl  "localhost"
     :apiKey (System/getenv "OPENAI_API_KEY")} {}))

fails with the following error

:#error {}
 :cause Duplicate setter found for :modelName in dev.langchain4j.model.openai.OpenAiChatModel$OpenAiChatModelBuilder class
 :via
 [{:type java.lang.IllegalArgumentException
   :message Duplicate setter found for :modelName in dev.langchain4j.model.openai.OpenAiChatModel$OpenAiChatModelBuilder class
   :at [clojure.java.data.builder$find_setters$fn__9041 invoke builder.clj 66]}]

The code is in the following repo: https://github.com/gavlooth/problem

Should `(clojure.java.data/from-java-deep Class {})` work?

Sun, 31 Dec 2023 11:17:16 +0000

(clojure.java.data/from-java-deep Class {}) throws StackOverflowError.

The docs don't say anything about this, but I'd like to see this case covered by java.data.

You can find a tiny example in https://github.com/henrik42/java.data-with-Class/tree/master

This shows the error.

clj -X main/this-call-throws
Execution error (StackOverflowError) at clojure.java.data/add-deep-getter-fn (data.clj:121).

As a workaround I'm using (defmethod j/from-java-deep Class [clazz _] {:class clazz}) -- but this is not really a solution since it does not even give you what (from-java-shallow Class {}) would give you.

clj -X main/this-call-works
(j/from-java-deep Class) ;=>  {:class java.lang.Class}

Using

(defmethod j/from-java-deep Class [clazz _] (j/from-java-shallow Class {}))

instead isn't much better because it's not a deep-copy either.