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adding from_map_to_data_row function #1433

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Merged
merged 2 commits into from
Sep 11, 2025
Merged

adding from_map_to_data_row function #1433

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3b5924f
adding from_map_to_data_row function
CarloMariaProietti Sep 7, 2025
137a8fd
from map to data row + test
CarloMariaProietti Sep 8, 2025
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8 changes: 8 additions & 0 deletions core/src/main/kotlin/org/jetbrains/kotlinx/dataframe/api/typeConversions.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -20,8 +20,11 @@ import org.jetbrains.kotlinx.dataframe.columns.ColumnSet
import org.jetbrains.kotlinx.dataframe.columns.FrameColumn
import org.jetbrains.kotlinx.dataframe.columns.SingleColumn
import org.jetbrains.kotlinx.dataframe.columns.ValueColumn
import org.jetbrains.kotlinx.dataframe.documentation.DocumentationUrls
import org.jetbrains.kotlinx.dataframe.impl.DataRowImpl
import org.jetbrains.kotlinx.dataframe.impl.GroupByImpl
import org.jetbrains.kotlinx.dataframe.impl.anyNull
import org.jetbrains.kotlinx.dataframe.impl.api.convertToDataFrame
import org.jetbrains.kotlinx.dataframe.impl.asList
import org.jetbrains.kotlinx.dataframe.impl.columnName
import org.jetbrains.kotlinx.dataframe.impl.columns.ColumnAccessorImpl
Expand Down Expand Up @@ -403,6 +406,11 @@ public fun <T> DataRow<T>.toDataFrame(): DataFrame<T> = owner[index..index]

public fun AnyRow.toMap(): Map<String, Any?> = df().columns().associate { it.name() to it[index] }

public fun Map<String, Any?>.toDataRow(): DataRow<*> {
val df = mapValues { listOf(it.value) }.toDataFrame()
return DataRowImpl(0, df)
}

// endregion

// region Array
Expand Down
9 changes: 9 additions & 0 deletions core/src/test/kotlin/org/jetbrains/kotlinx/dataframe/testSets/person/DataRowTests.kt
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Expand Up @@ -21,6 +21,7 @@ import org.jetbrains.kotlinx.dataframe.api.relative
import org.jetbrains.kotlinx.dataframe.api.rowMean
import org.jetbrains.kotlinx.dataframe.api.rowStd
import org.jetbrains.kotlinx.dataframe.api.rowSum
import org.jetbrains.kotlinx.dataframe.api.toDataRow
import org.jetbrains.kotlinx.dataframe.api.toDouble
import org.jetbrains.kotlinx.dataframe.api.transposeTo
import org.jetbrains.kotlinx.dataframe.api.update
Expand Down Expand Up @@ -118,4 +119,12 @@ class DataRowTests : BaseTest() {
typed[1].relative(-2..2) shouldBe typed[0..3]
typed[1].relative(listOf(2, -1, -3, 0)) shouldBe typed[3, 0, 1]
}

@Test
fun toDataRow() {
val map = mapOf<String, Any?>("a" to 1, "b" to true)
val row = map.toDataRow()
row["a"] shouldBe 1
row["b"] shouldBe true
}
}
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