Auto-generated dataframe extension properties for Gradle project

[sripadh8]

In order to generate auto-generated extension properties, as mentioned in https://kotlin.github.io/dataframe/schemasgradle.html#annotation-processing, I updated my brazle.gradle.kts file to look like this:

plugins {
    kotlin("jvm") version "2.0.20"
    id("org.jetbrains.kotlinx.dataframe") version "0.13.1"
}

dependencies {
    // Kotlin dataframes
    implementation("org.jetbrains.kotlinx:dataframe:0.13.1")

    testImplementation(kotlin("test"))
}

As mentioned in the example, I created a sample interface and annotated it with @DataSchema. However, I'm not able to access the columns via type-safe accessors. Type-safe accessors are created while working with Kotlin notebooks though, however not in Gradle project. Can someone help me?

[sripadh8]

Attaching a sample image to explain further. I executed the project using ./gradlew assemble as suggested in the documentation.

[Jolanrensen]

Hi :) just to verify, could you try the same with the just-released version 0.14.0 of DataFrame? It supports kotlin 2.0.20 and KSP, which is used in the generation and is kotlin-version dependent.

[sripadh8]

Sure. Will try 0.14.0 and update.

[sripadh8]

It works with an upgrade the latest 0.14.0 and repairing the existing IntelliJ caches.

[koperagen]

Hi. Apart from verifying the version, there are a few troubleshooting steps

1. Make sure you run build or more specifically, ksp task. Generated code should appear in the build directory of module where dataframe plugin is used
   
2. If code is there, but it doesn't resolve, maybe it's in another package? Shouldn't be the case since you use it in the same file as interface declaration. Alt+Enter might suggest to import these extensions. If not,
   File -> Cache Recovery -> Repair IDE might help. Usually first few steps, up to reopen the project. If it doesn't, there's no need to perform subsequent repair IDE actions after that

[sripadh8]

In the morning, I imported ksp and tried as well. All the while /build/generated/ksp/main/kotlin directory as empty. I just upgraded to

plugins {
    kotlin("jvm") version "2.0.20"
    id("org.jetbrains.kotlinx.dataframe") version "0.14.0"
}

dependencies {
    // Kotlin dataframes
    implementation("org.jetbrains.kotlinx:dataframe:0.14.0")

    testImplementation(kotlin("test"))
}

Then ran the build. At first it doesn't generate still. I then performed File -> Repair IDE, and then ran. It succeeds. It now looks like this:

[sripadh8]

Many thanks for the prompt responses team.