JuliaInterop / JuliaInterop/JavaCall.jl

Allow multidimensional array inputs

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Dominant language
Julia
Stars
125
Forks
53
PR merge metrics
No merged PRs in 30d

Description

How could we extend JavaCall to allow passing of multidimensional arrays? E.g.

public class Test {
    public static double[][] testDoubleArray2D(double[][] array) {
        return array;
    }
}

The problem appears to be MethodError: no method matching jvalue(::Vector{Vector{Float64}}), but I'm having a hard time debugging the root cause of this issue.

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Research direction

Start by reproducing the reported MethodError for jvalue(::Vector{Vector{Float64}}), then trace JavaCall's array-conversion path to find where nested Julia vectors are handled. Done means multidimensional arrays such as the shown double[][] input can be passed to Java and returned without the conversion error.

Written by the indexing model from the issue text.

Assessment

Tech stack
java, julia
Domain
backend
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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