DataSchema no longer auto-generating column accessors (Gradle, plugin v.0.13.1)

[2x2xplz]

Upgraded a Gradle/JVM project and found out that my @DataSchema-annotated classes are no longer generating column accessors. Backtracked and found it works fine in 0.12.1 then stops working in 0.13.1.

A very basic example:

package org.example

import org.jetbrains.kotlinx.dataframe.DataFrame
import org.jetbrains.kotlinx.dataframe.annotations.DataSchema
import org.jetbrains.kotlinx.dataframe.api.groupBy
import org.jetbrains.kotlinx.dataframe.api.sumFor
import org.jetbrains.kotlinx.dataframe.api.toDataFrame


@DataSchema
data class StoreHour(
    val weekday : Int,
    val hour : Int,
    val sales : Double,
    val taxCollected : Double
)

fun main() {
    val name = "Kotlin"
    println("Hello, $name!")

    for (i in 1..5) {
        println("i = $i")
    }

    val storeHours : List<StoreHour> = listOf(
        StoreHour(2, 7, 500.0, 40.0),
        StoreHour(2, 8, 650.0, 60.0),
        StoreHour(2, 9, 770.0, 70.0),
        StoreHour(2, 10, 900.0, 80.0)
    )

    val df : DataFrame<StoreHour> = storeHours.toDataFrame() //.cast<StoreHour>()

    println(df)

    val dfSums : DataFrame<StoreHour> = df.groupBy { weekday }.sumFor { sales and taxCollected }

    println(dfSums)

}

and my build.gradle.kts:

plugins {
    kotlin("jvm") version "2.0.20"
    id("com.google.devtools.ksp") version "2.1.10-1.0.29" // "2.0.20-1.0.25"
    id("org.jetbrains.kotlinx.dataframe") version "0.13.1" // 0.12.1
}

group = "org.example"
version = "1.0-SNAPSHOT"

repositories {
    mavenCentral()
}

dependencies {
    testImplementation(kotlin("test"))
    implementation("org.jetbrains.kotlinx:dataframe:0.13.1") // 0.12.1
}

tasks.test {
    useJUnitPlatform()
}
kotlin {
    jvmToolchain(21)
}

and when I roll back to 0.12.1 in gradle (both plugin and dependency) and the ksp plugin back to 2.0.20-1.0.25, everything works as expected:

I experimented with the ksp plugin version but that doesn't seem to have any effect on the schema generation (other than it won't build/assemble when using the wrong version)

I also see that release notes for 0.13.1 mention a change to ColumnsSelection DSL #372 but the syntax I'm using still appears to be supported in the 0.15 documentation

Thanks for any help getting this working again.

[koperagen]

Hi! Thank you for the report. This looks quite problematic :( Seems that our gradle plugin can't setup ksp dependency with ksp 2.1.0+

I suggest to do the following:
Remove dataframe from gradle plugins:

plugins {
  kotlin("jvm") version "2.1.10"
  id("com.google.devtools.ksp") version "2.1.10-1.0.29"
}

Add symbol-processor to ksp directly:

dependencies {
    ksp("org.jetbrains.kotlinx.dataframe:symbol-processor-all:0.13.1")
}

[2x2xplz]

Thanks! Using the ksp dependency rather than the dataframe plugin appears to solve the issue. I upgraded to latest (0.15) and seems to be working great, all my columns are recognized and the program compiles.