dataframe

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``` Exception in thread "main" java.lang.IllegalArgumentException: Column `items` has type `org.jetbrains.kotlinx.dataframe.DataFrame` that differs from target type `org.jetbrains.kotlinx.dataframe.DataFrame` at org.jetbrains.kotlinx.dataframe.impl.api.ConvertToKt.convertToImpl$convertToSchema(convertTo.kt:70) at org.jetbrains.kotlinx.dataframe.impl.api.ConvertToKt.convertToImpl(convertTo.kt:121) at org.jetbrains.kotlinx.dataframe.impl.api.ConvertToKt.convertToImpl$default(convertTo.kt:45) ``` The exception occurs because `!allowConversion` but...

Jolanrensen

Bug using @file:ImportDataSchema

1

If I generate a DataSchema using `@file:ImportDataSchema()` and then create a new manual `@DataSchema interface` which references any generated code, it doesn't generate. It works well using the gradle `dataframes...

Jolanrensen

Using `@file:ImportDataSchema()` or the gradle plugin doesn't seem to generate the correct path for `readCSV()`. It's probably because the relative path differs for the plugin compared to running the code...

Jolanrensen

DataFrame<T>.append(vararg values: Any?) does not fail on incorrect arguments passed

2

If an invalid number of arguments are passed to DataFrame.append then the assertion is not checked (by default is turned off) and unchanged DataFrame is returned (which is a bit...

sulevsky

So this code ```kotlin @DataSchema interface Schema { val i: Int } val df = dataFrameOf("i")(1, null) df.fillNulls(Schema::i).with { 42 } ``` causes java.lang.NullPointerException More generic example (fillNulls uses update):...

koperagen

resource not found

4

when running the following code the first time in a cell in a Jupyter Lab notebook: `%use dataframe(0.8.1)` I get a the following exception: `JupyterIntegration:WARNING => A resource with classpath...

jbaron

Arrow Support

13

Hi, I can't find that `dataframe` supports Arrow as internal serialization / backend. Is this something which you're working on?

Lundez

Enhancement: Support new-line delimited JSON format/JSON lines

5

Thank you for the great project. It looks very promising to me. I currently use `val df = DataFrame.readJsonStr(File("foo.ndjson").readLines().joinToString(",", "[", "]"))`, to read new-line delimited JSON files, which works quite...

JohannesOehm

It would be great if dataframe supported java.sql.ResultSet. Something like: `DataFrame.fromResultSet(resultSet)` This would give you an equivalent data frame as if you exported the result set to a CSV and...

john-kramer-upwave

Currently, a KSP preprocessor generates DataSchema-boilerplate. We want to address the following: 1. You need to build a project to generate boilerplate. We want the same experience as kotlinx.serialization (generate...

koperagen