Using java.data

Question

Hi @here,
Clojure noob and java dev here.
Wanted to convert a tree object into clojure object. This is not the definite end goal.

Aim is to provide a human readable intermediate language that will have parameterized methods for similar subtrees that will provide lazy initialization for breadth first search from root. (Not a proper BFS, you have expand and create objects for all children and when a node is selected among children, you have to get all its children. So, more like, expand all nodes, select a node, repeat)

This will again output a data format like yaml.

When I tried to do traversal in the clojure with java.data lib, it threw error because the objects were not pure java beans. So, I plugged into the name space and changed a method definition to use reflection instead of getter, setters.

Then it was working for simple cases but even slightly large case, I am getting stack overflow error. Is that normal?
I did not create the intermediate language in clojure yet, I just created the object and tried to convert.
I increased the stack memory, still I was not able to solve this.

Answer 1

Since you're a beginner I'll mentioned right off the bat the #beginners channels on both Clojurians Zulip and Clojurians Slack. They allow for a much better interactivity with the community when you need help with something.

Your description lacks important details. Ideally, there should be an MRE (Minimal Reproducible Example) which shows what you want to achieve, what you currently have, and what doesn't work.
Since I don't know what your Java classes look like, what your modification to clojure.java.data is exactly, how you use the resulting data, I can't really help here. So at the very least, just those things should be shown.

clojure.java.data has both from-java and from-java-deep. The former recurses only for Iterable, but even there it uses for so it "escapes" the recursion and should not lead to a stack overflow. from-java-deep does use a proper recursion, so it's bound to hit SO on specific data types that are nested deeply enough.

Comments

I think you mean clojure.java.data there, not clojure.java.beans?

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Oops, yes. Edited, thank you.