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Expected hasNulls behavior for #428 #429

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Expected hasNulls behavior for #428 #429

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2 changes: 1 addition & 1 deletion core/generated-sources/src/main/kotlin/org/jetbrains/kotlinx/dataframe/DataColumn.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -97,7 +97,7 @@ public interface DataColumn<out T> : BaseColumn<T> {
public fun empty(name: String = ""): AnyCol = createValueColumn(name, emptyList<Unit>(), typeOf<Unit>())
}

public fun hasNulls(): Boolean = type().isMarkedNullable
public fun hasNulls(): Boolean = values().any { it == null }

override fun distinct(): DataColumn<T>

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12 changes: 12 additions & 0 deletions core/generated-sources/src/test/kotlin/org/jetbrains/kotlinx/dataframe/api/contains.kt
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Original file line number Diff line number Diff line change
@@ -1,7 +1,11 @@
package org.jetbrains.kotlinx.dataframe.api

import io.kotest.matchers.shouldBe
import org.jetbrains.kotlinx.dataframe.DataColumn
import org.jetbrains.kotlinx.dataframe.hasNulls
import org.junit.Test
import kotlin.reflect.full.withNullability
import kotlin.reflect.typeOf

class ContainsTests {

Expand Down Expand Up @@ -61,4 +65,12 @@ class ContainsTests {
row.containsKey(b) shouldBe false
row.containsKey(A::b) shouldBe false
}

@Test
fun `nullable vs has nulls`() {
val nullable = DataColumn.create("nullable", listOf("a" as String?, "b" as String?, "c" as String?))
nullable.hasNulls shouldBe false
val notNullable = DataColumn.create("notNullable", listOf("a" as String?, "b" as String?, "c" as String?, null as String?), typeOf<String>().withNullability(false))
notNullable.hasNulls shouldBe true
}
}
2 changes: 1 addition & 1 deletion core/src/main/kotlin/org/jetbrains/kotlinx/dataframe/DataColumn.kt
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Original file line number Diff line number Diff line change
Expand Up @@ -97,7 +97,7 @@ public interface DataColumn<out T> : BaseColumn<T> {
public fun empty(name: String = ""): AnyCol = createValueColumn(name, emptyList<Unit>(), typeOf<Unit>())
}

public fun hasNulls(): Boolean = type().isMarkedNullable
public fun hasNulls(): Boolean = values().any { it == null }

override fun distinct(): DataColumn<T>

Expand Down
12 changes: 12 additions & 0 deletions core/src/test/kotlin/org/jetbrains/kotlinx/dataframe/api/contains.kt
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Original file line number Diff line number Diff line change
@@ -1,7 +1,11 @@
package org.jetbrains.kotlinx.dataframe.api

import io.kotest.matchers.shouldBe
import org.jetbrains.kotlinx.dataframe.DataColumn
import org.jetbrains.kotlinx.dataframe.hasNulls
import org.junit.Test
import kotlin.reflect.full.withNullability
import kotlin.reflect.typeOf

class ContainsTests {

Expand Down Expand Up @@ -61,4 +65,12 @@ class ContainsTests {
row.containsKey(b) shouldBe false
row.containsKey(A::b) shouldBe false
}

@Test
fun `nullable vs has nulls`() {
val nullable = DataColumn.create("nullable", listOf("a" as String?, "b" as String?, "c" as String?))
nullable.hasNulls shouldBe false
val notNullable = DataColumn.create("notNullable", listOf("a" as String?, "b" as String?, "c" as String?, null as String?), typeOf<String>().withNullability(false))
notNullable.hasNulls shouldBe true
}
}