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Add df.properties() function to improve visibility of generated API for typed column access #957

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Dec 12, 2024
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Add df.properties() function to improve visibility of generated API for typed column access #957

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7 changes: 6 additions & 1 deletion core/api/core.api
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Expand Up @@ -192,7 +192,7 @@ public final class org/jetbrains/dataframe/keywords/SoftKeywords$Companion {
public final fun getVALUES ()Ljava/util/List;
}

public abstract interface class org/jetbrains/kotlinx/dataframe/ColumnsContainer {
public abstract interface class org/jetbrains/kotlinx/dataframe/ColumnsContainer : org/jetbrains/kotlinx/dataframe/ColumnsScope {
public abstract fun columns ()Ljava/util/List;
public abstract fun columnsCount ()I
public abstract fun containsColumn (Ljava/lang/String;)Z
Expand Down Expand Up @@ -234,6 +234,10 @@ public final class org/jetbrains/kotlinx/dataframe/ColumnsContainer$DefaultImpls
public static fun get (Lorg/jetbrains/kotlinx/dataframe/ColumnsContainer;Lorg/jetbrains/kotlinx/dataframe/columns/ColumnReference;)Lorg/jetbrains/kotlinx/dataframe/columns/FrameColumn;
}

public abstract interface class org/jetbrains/kotlinx/dataframe/ColumnsScope {
public abstract fun get (Ljava/lang/String;)Lorg/jetbrains/kotlinx/dataframe/DataColumn;
}

public abstract interface class org/jetbrains/kotlinx/dataframe/DataColumn : org/jetbrains/kotlinx/dataframe/columns/BaseColumn {
public static final field Companion Lorg/jetbrains/kotlinx/dataframe/DataColumn$Companion;
public abstract fun distinct ()Lorg/jetbrains/kotlinx/dataframe/DataColumn;
Expand Down Expand Up @@ -4206,6 +4210,7 @@ public final class org/jetbrains/kotlinx/dataframe/api/DataFrameGetKt {
public static final fun getOrNull (Lorg/jetbrains/kotlinx/dataframe/DataFrame;I)Lorg/jetbrains/kotlinx/dataframe/DataRow;
public static final fun getRows (Lorg/jetbrains/kotlinx/dataframe/DataFrame;Ljava/lang/Iterable;)Lorg/jetbrains/kotlinx/dataframe/DataFrame;
public static final fun getRows (Lorg/jetbrains/kotlinx/dataframe/DataFrame;Lkotlin/ranges/IntRange;)Lorg/jetbrains/kotlinx/dataframe/DataFrame;
public static final fun properties (Lorg/jetbrains/kotlinx/dataframe/DataFrame;)Lorg/jetbrains/kotlinx/dataframe/ColumnsScope;
public static final fun rows (Lorg/jetbrains/kotlinx/dataframe/DataFrame;)Ljava/lang/Iterable;
public static final fun rowsReversed (Lorg/jetbrains/kotlinx/dataframe/DataFrame;)Ljava/lang/Iterable;
}
Expand Down
6 changes: 3 additions & 3 deletions core/src/main/kotlin/org/jetbrains/kotlinx/dataframe/ColumnsContainer.kt
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Expand Up @@ -18,9 +18,9 @@ import kotlin.reflect.KProperty
*
* Base interface for [DataFrame] and [ColumnSelectionDsl]
*
* @param T Schema marker. Used to generate extension properties for typed column access.
* @param T Schema marker. Used to resolve generated extension properties for typed column access.
*/
public interface ColumnsContainer<out T> {
public interface ColumnsContainer<out T> : ColumnsScope<T> {

// region columns

Expand Down Expand Up @@ -54,7 +54,7 @@ public interface ColumnsContainer<out T> {

// region get

public operator fun get(columnName: String): AnyCol = getColumn(columnName)
public override operator fun get(columnName: String): AnyCol = getColumn(columnName)

public operator fun get(columnPath: ColumnPath): AnyCol = getColumn(columnPath)

Expand Down
12 changes: 12 additions & 0 deletions core/src/main/kotlin/org/jetbrains/kotlinx/dataframe/ColumnsScope.kt
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@@ -0,0 +1,12 @@
package org.jetbrains.kotlinx.dataframe

/**
* Provides minimal API required for generated column properties:
*
* `val ColumnsScope<Schema marker>.column: DataColumn<String> get() = this["column"] as DataColumn<String>`
*
* @param T Schema marker. Used to resolve generated extension properties for typed column access.
*/
public interface ColumnsScope<out T> {
public operator fun get(columnName: String): AnyCol
}
23 changes: 23 additions & 0 deletions core/src/main/kotlin/org/jetbrains/kotlinx/dataframe/api/DataFrameGet.kt
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Expand Up @@ -4,6 +4,7 @@ import org.jetbrains.kotlinx.dataframe.AnyCol
import org.jetbrains.kotlinx.dataframe.AnyColumnReference
import org.jetbrains.kotlinx.dataframe.ColumnSelector
import org.jetbrains.kotlinx.dataframe.ColumnsContainer
import org.jetbrains.kotlinx.dataframe.ColumnsScope
import org.jetbrains.kotlinx.dataframe.ColumnsSelector
import org.jetbrains.kotlinx.dataframe.DataColumn
import org.jetbrains.kotlinx.dataframe.DataFrame
Expand Down Expand Up @@ -58,6 +59,28 @@ public fun <T> ColumnsContainer<T>.getFrameColumn(columnName: String): FrameColu
public fun <T> ColumnsContainer<T>.getColumnGroup(columnPath: ColumnPath): ColumnGroup<*> =
get(columnPath).asColumnGroup()

/**
* Utility property to access scope with only dataframe column properties for code completion,
* filtering out DataFrame API.
*
* It's a quick way to check that code generation in notebooks or compiler plugin
* worked as expected or find columns you're interested in.
*
* In notebooks:
* ```
* val df = DataFrame.read("file.csv")
* ==== next code cell
* df. // column properties are mixed together with methods, not easy to find unless you already know names
* df.properties(). // easy to overview available columns
* ```
* In compiler plugin:
* ```
* val df = @Import DataFrame.read("file.csv")
* df.properties().
* ```
*/
public fun <T> DataFrame<T>.properties(): ColumnsScope<T> = this

// region getColumn

public fun <T> ColumnsContainer<T>.getColumn(name: String): AnyCol =
Expand Down
5 changes: 3 additions & 2 deletions core/src/main/kotlin/org/jetbrains/kotlinx/dataframe/impl/codeGen/CodeGeneratorImpl.kt
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Expand Up @@ -12,6 +12,7 @@ import org.jetbrains.dataframe.impl.codeGen.InterfaceGenerationMode.WithFields
import org.jetbrains.dataframe.keywords.HardKeywords
import org.jetbrains.dataframe.keywords.ModifierKeywords
import org.jetbrains.kotlinx.dataframe.ColumnsContainer
import org.jetbrains.kotlinx.dataframe.ColumnsScope
import org.jetbrains.kotlinx.dataframe.DataColumn
import org.jetbrains.kotlinx.dataframe.DataFrame
import org.jetbrains.kotlinx.dataframe.DataRow
Expand Down Expand Up @@ -166,7 +167,7 @@ internal object FullyQualifiedNames : TypeRenderingStrategy {
internal object ShortNames : TypeRenderingStrategy {

private val dataRow = DataRow::class.simpleName!!
private val columnsContainer = ColumnsContainer::class.simpleName!!
private val columnsContainer = ColumnsScope::class.simpleName!!
private val dataFrame = DataFrame::class.simpleName!!
private val dataColumn = DataColumn::class.simpleName!!
private val columnGroup = ColumnGroup::class.simpleName!!
Expand Down Expand Up @@ -565,7 +566,7 @@ public fun Code.toStandaloneSnippet(packageName: String, additionalImports: List
appendLine("package $packageName")
appendLine()
}
appendLine("import org.jetbrains.kotlinx.dataframe.ColumnsContainer")
appendLine("import org.jetbrains.kotlinx.dataframe.ColumnsScope")
appendLine("import org.jetbrains.kotlinx.dataframe.DataColumn")
appendLine("import org.jetbrains.kotlinx.dataframe.DataFrame")
appendLine("import org.jetbrains.kotlinx.dataframe.DataRow")
Expand Down
4 changes: 2 additions & 2 deletions core/src/test/kotlin/org/jetbrains/kotlinx/dataframe/codeGen/CodeGenerationTests.kt
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Expand Up @@ -6,7 +6,7 @@ import org.jetbrains.dataframe.impl.codeGen.InterfaceGenerationMode
import org.jetbrains.dataframe.impl.codeGen.ReplCodeGenerator
import org.jetbrains.dataframe.impl.codeGen.generate
import org.jetbrains.kotlinx.dataframe.AnyRow
import org.jetbrains.kotlinx.dataframe.ColumnsContainer
import org.jetbrains.kotlinx.dataframe.ColumnsScope
import org.jetbrains.kotlinx.dataframe.DataColumn
import org.jetbrains.kotlinx.dataframe.DataRow
import org.jetbrains.kotlinx.dataframe.api.dataFrameOf
Expand All @@ -30,7 +30,7 @@ class CodeGenerationTests : BaseTest() {

val personShortName = Person::class.simpleName!!

val dfName = (ColumnsContainer::class).simpleName!!
val dfName = (ColumnsScope::class).simpleName!!
val dfRowName = (DataRow::class).simpleName!!
val dataCol = (DataColumn::class).simpleName!!
val dataRow = (DataRow::class).simpleName!!
Expand Down
8 changes: 4 additions & 4 deletions core/src/test/kotlin/org/jetbrains/kotlinx/dataframe/codeGen/ReplCodeGenTests.kt
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Expand Up @@ -4,7 +4,7 @@ import io.kotest.matchers.shouldBe
import io.kotest.matchers.string.shouldNotBeEmpty
import org.jetbrains.dataframe.impl.codeGen.ReplCodeGenerator
import org.jetbrains.dataframe.impl.codeGen.process
import org.jetbrains.kotlinx.dataframe.ColumnsContainer
import org.jetbrains.kotlinx.dataframe.ColumnsScope
import org.jetbrains.kotlinx.dataframe.DataColumn
import org.jetbrains.kotlinx.dataframe.DataRow
import org.jetbrains.kotlinx.dataframe.annotations.DataSchema
Expand All @@ -20,7 +20,7 @@ import org.junit.Test
@Suppress("ktlint:standard:class-naming")
class ReplCodeGenTests : BaseTest() {

val dfName = (ColumnsContainer::class).simpleName!!
val dfName = (ColumnsScope::class).simpleName!!
val dfRowName = (DataRow::class).simpleName!!
val dataCol = (DataColumn::class).simpleName!!
val intName = Int::class.simpleName!!
Expand Down Expand Up @@ -192,7 +192,7 @@ class ReplCodeGenTests : BaseTest() {
repl.process<Test3.B>()
repl.process<Test3.D>()
val c = repl.process(Test3.df, Test3::df)
"""val .*ColumnsContainer<\w*>.x:""".toRegex().findAll(c.declarations).count() shouldBe 1
"""val .*ColumnsScope<\w*>.x:""".toRegex().findAll(c.declarations).count() shouldBe 1
}

object Test4 {
Expand All @@ -216,6 +216,6 @@ class ReplCodeGenTests : BaseTest() {
repl.process<Test4.A>()
repl.process<Test4.B>()
val c = repl.process(Test4.df, Test4::df)
"""val .*ColumnsContainer<\w*>.a:""".toRegex().findAll(c.declarations).count() shouldBe 1
"""val .*ColumnsScope<\w*>.a:""".toRegex().findAll(c.declarations).count() shouldBe 1
}
}
4 changes: 3 additions & 1 deletion ...ns/kotlin-dataframe/src/org/jetbrains/kotlinx/dataframe/plugin/extensions/IrBodyFiller.kt
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Expand Up @@ -129,6 +129,8 @@ private class DataFrameFileLowering(val context: IrPluginContext) : FileLowering
companion object {
val COLUMNS_CONTAINER_ID =
CallableId(ClassId(FqName("org.jetbrains.kotlinx.dataframe"), Name.identifier("ColumnsContainer")), Name.identifier("get"))
val COLUMNS_SCOPE_ID =
CallableId(ClassId(FqName("org.jetbrains.kotlinx.dataframe"), Name.identifier("ColumnsScope")), Name.identifier("get"))
val DATA_ROW_ID =
CallableId(ClassId(FqName("org.jetbrains.kotlinx.dataframe"), Name.identifier("DataRow")), Name.identifier("get"))
}
Expand Down Expand Up @@ -196,7 +198,7 @@ private class DataFrameFileLowering(val context: IrPluginContext) : FileLowering

val get = if (isDataColumn) {
context
.referenceFunctions(COLUMNS_CONTAINER_ID)
.referenceFunctions(COLUMNS_SCOPE_ID)
.single {
it.owner.valueParameters.size == 1 && it.owner.valueParameters[0].type == context.irBuiltIns.stringType
}
Expand Down
2 changes: 1 addition & 1 deletion .../kotlin-dataframe/src/org/jetbrains/kotlinx/dataframe/plugin/extensions/TokenGenerator.kt
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Expand Up @@ -73,7 +73,7 @@ class TokenGenerator(session: FirSession) : FirDeclarationGenerationExtension(se
val columnContainerExtension = generateExtensionProperty(
callableId = callableId,
receiverType = ConeClassLikeTypeImpl(
ConeClassLikeLookupTagImpl(Names.COLUMNS_CONTAINER_CLASS_ID),
ConeClassLikeLookupTagImpl(Names.COLUMNS_SCOPE_CLASS_ID),
typeArguments = arrayOf(schemaProperty.marker),
isNullable = false
),
Expand Down
6 changes: 6 additions & 0 deletions plugins/kotlin-dataframe/src/org/jetbrains/kotlinx/dataframe/plugin/utils/Names.kt
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Expand Up @@ -33,6 +33,12 @@ object Names {
FqName.fromSegments(listOf("org", "jetbrains", "kotlinx", "dataframe")),
Name.identifier("ColumnsContainer")
)

val COLUMNS_SCOPE_CLASS_ID: ClassId
get() = ClassId(
FqName.fromSegments(listOf("org", "jetbrains", "kotlinx", "dataframe")),
Name.identifier("ColumnsScope")
)
val DATA_ROW_CLASS_ID: ClassId
get() = ClassId(FqName.fromSegments(listOf("org", "jetbrains", "kotlinx", "dataframe")), Name.identifier("DataRow"))
val DF_ANNOTATIONS_PACKAGE: Name
Expand Down
10 changes: 5 additions & 5 deletions plugins/kotlin-dataframe/testData/box/propertiesOrder.fir.txt
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Expand Up @@ -25,31 +25,31 @@ FILE: propertiesOrder.kt
public final val R|org/jetbrains/kotlinx/dataframe/DataRow<<local>/Read_16I>|.full_name: R|kotlin/String|
public get(): R|kotlin/String|

public final val R|org/jetbrains/kotlinx/dataframe/ColumnsContainer<<local>/Read_16I>|.full_name: R|org/jetbrains/kotlinx/dataframe/DataColumn<kotlin/String>|
public final val R|org/jetbrains/kotlinx/dataframe/ColumnsScope<<local>/Read_16I>|.full_name: R|org/jetbrains/kotlinx/dataframe/DataColumn<kotlin/String>|
public get(): R|org/jetbrains/kotlinx/dataframe/DataColumn<kotlin/String>|

public final val R|org/jetbrains/kotlinx/dataframe/DataRow<<local>/Read_16I>|.topics: R|kotlin/String|
public get(): R|kotlin/String|

public final val R|org/jetbrains/kotlinx/dataframe/ColumnsContainer<<local>/Read_16I>|.topics: R|org/jetbrains/kotlinx/dataframe/DataColumn<kotlin/String>|
public final val R|org/jetbrains/kotlinx/dataframe/ColumnsScope<<local>/Read_16I>|.topics: R|org/jetbrains/kotlinx/dataframe/DataColumn<kotlin/String>|
public get(): R|org/jetbrains/kotlinx/dataframe/DataColumn<kotlin/String>|

public final val R|org/jetbrains/kotlinx/dataframe/DataRow<<local>/Read_16I>|.watchers: R|kotlin/Int|
public get(): R|kotlin/Int|

public final val R|org/jetbrains/kotlinx/dataframe/ColumnsContainer<<local>/Read_16I>|.watchers: R|org/jetbrains/kotlinx/dataframe/DataColumn<kotlin/Int>|
public final val R|org/jetbrains/kotlinx/dataframe/ColumnsScope<<local>/Read_16I>|.watchers: R|org/jetbrains/kotlinx/dataframe/DataColumn<kotlin/Int>|
public get(): R|org/jetbrains/kotlinx/dataframe/DataColumn<kotlin/Int>|

public final val R|org/jetbrains/kotlinx/dataframe/DataRow<<local>/Read_16I>|.stargazers_count: R|kotlin/Int|
public get(): R|kotlin/Int|

public final val R|org/jetbrains/kotlinx/dataframe/ColumnsContainer<<local>/Read_16I>|.stargazers_count: R|org/jetbrains/kotlinx/dataframe/DataColumn<kotlin/Int>|
public final val R|org/jetbrains/kotlinx/dataframe/ColumnsScope<<local>/Read_16I>|.stargazers_count: R|org/jetbrains/kotlinx/dataframe/DataColumn<kotlin/Int>|
public get(): R|org/jetbrains/kotlinx/dataframe/DataColumn<kotlin/Int>|

public final val R|org/jetbrains/kotlinx/dataframe/DataRow<<local>/Read_16I>|.html_url: R|java/net/URL|
public get(): R|java/net/URL|

public final val R|org/jetbrains/kotlinx/dataframe/ColumnsContainer<<local>/Read_16I>|.html_url: R|org/jetbrains/kotlinx/dataframe/DataColumn<java/net/URL>|
public final val R|org/jetbrains/kotlinx/dataframe/ColumnsScope<<local>/Read_16I>|.html_url: R|org/jetbrains/kotlinx/dataframe/DataColumn<java/net/URL>|
public get(): R|org/jetbrains/kotlinx/dataframe/DataColumn<java/net/URL>|

public constructor(): R|<local>/Scope0|
Expand Down
2 changes: 1 addition & 1 deletion plugins/kotlin-dataframe/testData/diagnostics/selectDuringTyping.fir.txt
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Expand Up @@ -20,7 +20,7 @@ FILE: selectDuringTyping.kt
public final val R|org/jetbrains/kotlinx/dataframe/DataRow<<local>/ExplodeSchema_94I>|.timestamps: R|kotlin/collections/List<kotlin/Int>|
public get(): R|kotlin/collections/List<kotlin/Int>|

public final val R|org/jetbrains/kotlinx/dataframe/ColumnsContainer<<local>/ExplodeSchema_94I>|.timestamps: R|org/jetbrains/kotlinx/dataframe/DataColumn<kotlin/collections/List<kotlin/Int>>|
public final val R|org/jetbrains/kotlinx/dataframe/ColumnsScope<<local>/ExplodeSchema_94I>|.timestamps: R|org/jetbrains/kotlinx/dataframe/DataColumn<kotlin/collections/List<kotlin/Int>>|
public get(): R|org/jetbrains/kotlinx/dataframe/DataColumn<kotlin/collections/List<kotlin/Int>>|

public constructor(): R|<local>/Scope0|
Expand Down
8 changes: 4 additions & 4 deletions plugins/kotlin-dataframe/testData/diagnostics/toDataFrame_java.fir.txt
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Expand Up @@ -22,7 +22,7 @@ FILE: test.kt
public final val R|org/jetbrains/kotlinx/dataframe/DataRow<<local>/S_43I>|.javaRecord: R|org/jetbrains/kotlinx/dataframe/DataRow<<local>/JavaRecord_771>|
public get(): R|org/jetbrains/kotlinx/dataframe/DataRow<<local>/JavaRecord_771>|

public final val R|org/jetbrains/kotlinx/dataframe/ColumnsContainer<<local>/S_43I>|.javaRecord: R|org/jetbrains/kotlinx/dataframe/columns/ColumnGroup<<local>/JavaRecord_771>|
public final val R|org/jetbrains/kotlinx/dataframe/ColumnsScope<<local>/S_43I>|.javaRecord: R|org/jetbrains/kotlinx/dataframe/columns/ColumnGroup<<local>/JavaRecord_771>|
public get(): R|org/jetbrains/kotlinx/dataframe/columns/ColumnGroup<<local>/JavaRecord_771>|

public constructor(): R|<local>/Scope0|
Expand All @@ -47,19 +47,19 @@ FILE: test.kt
public final val R|org/jetbrains/kotlinx/dataframe/DataRow<<local>/JavaRecord_771>|.aaa: R|org/jetbrains/kotlinx/dataframe/DataRow<<local>/Aaa_771>|
public get(): R|org/jetbrains/kotlinx/dataframe/DataRow<<local>/Aaa_771>|

public final val R|org/jetbrains/kotlinx/dataframe/ColumnsContainer<<local>/JavaRecord_771>|.aaa: R|org/jetbrains/kotlinx/dataframe/columns/ColumnGroup<<local>/Aaa_771>|
public final val R|org/jetbrains/kotlinx/dataframe/ColumnsScope<<local>/JavaRecord_771>|.aaa: R|org/jetbrains/kotlinx/dataframe/columns/ColumnGroup<<local>/Aaa_771>|
public get(): R|org/jetbrains/kotlinx/dataframe/columns/ColumnGroup<<local>/Aaa_771>|

public final val R|org/jetbrains/kotlinx/dataframe/DataRow<<local>/JavaRecord_771>|.bean: R|org/jetbrains/kotlinx/dataframe/DataRow<<local>/Bean_771>|
public get(): R|org/jetbrains/kotlinx/dataframe/DataRow<<local>/Bean_771>|

public final val R|org/jetbrains/kotlinx/dataframe/ColumnsContainer<<local>/JavaRecord_771>|.bean: R|org/jetbrains/kotlinx/dataframe/columns/ColumnGroup<<local>/Bean_771>|
public final val R|org/jetbrains/kotlinx/dataframe/ColumnsScope<<local>/JavaRecord_771>|.bean: R|org/jetbrains/kotlinx/dataframe/columns/ColumnGroup<<local>/Bean_771>|
public get(): R|org/jetbrains/kotlinx/dataframe/columns/ColumnGroup<<local>/Bean_771>|

public final val R|org/jetbrains/kotlinx/dataframe/DataRow<<local>/JavaRecord_771>|.i: R|kotlin/Int|
public get(): R|kotlin/Int|

public final val R|org/jetbrains/kotlinx/dataframe/ColumnsContainer<<local>/JavaRecord_771>|.i: R|org/jetbrains/kotlinx/dataframe/DataColumn<kotlin/Int>|
public final val R|org/jetbrains/kotlinx/dataframe/ColumnsScope<<local>/JavaRecord_771>|.i: R|org/jetbrains/kotlinx/dataframe/DataColumn<kotlin/Int>|
public get(): R|org/jetbrains/kotlinx/dataframe/DataColumn<kotlin/Int>|

public constructor(): R|<local>/Scope1|
Expand Down
2 changes: 1 addition & 1 deletion plugins/symbol-processor/src/main/kotlin/org/jetbrains/dataframe/ksp/ExtensionsGenerator.kt
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Expand Up @@ -132,7 +132,7 @@ class ExtensionsGenerator(

private fun OutputStreamWriter.writeImports() {
appendLine("import org.jetbrains.kotlinx.dataframe.annotations.*")
appendLine("import org.jetbrains.kotlinx.dataframe.ColumnsContainer")
appendLine("import org.jetbrains.kotlinx.dataframe.ColumnsScope")
appendLine("import org.jetbrains.kotlinx.dataframe.DataColumn")
appendLine("import org.jetbrains.kotlinx.dataframe.DataFrame")
appendLine("import org.jetbrains.kotlinx.dataframe.DataRow")
Expand Down
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