Rename require -> requireColumn

Author: koperagen

core/src/main/kotlin/org/jetbrains/kotlinx/dataframe/api/require.kt

@@ -13,5 +13,5 @@ import kotlin.reflect.typeOf
  */
 @Refine
 @Interpretable("Require0")
-public inline fun <T, reified C> DataFrame<T>.require(noinline column: ColumnSelector<T, C>): DataFrame<T> =
+public inline fun <T, reified C> DataFrame<T>.requireColumn(noinline column: ColumnSelector<T, C>): DataFrame<T> =
     requireImpl(column, typeOf<C>())

core/src/test/kotlin/org/jetbrains/kotlinx/dataframe/api/require.kt

@@ -9,14 +9,14 @@ class RequireTests : ColumnsSelectionDslTests() {
 
     @Test
     fun `require returns same dataframe for existing typed column`() {
-        val checked = df.require { "name"["firstName"]<String>() }
+        val checked = df.requireColumn { "name"["firstName"]<String>() }
         checked shouldBe df
     }
 
     @Test
     fun `require throws on type mismatch`() {
         val throwable = shouldThrow<IllegalArgumentException> {
-            df.require { "name"["firstName"]<Int>() }
+            df.requireColumn { "name"["firstName"]<Int>() }
         }
         throwable.message shouldBe
             "Column 'name/firstName' has type 'kotlin.String', which is not subtype of required 'kotlin.Int' type."
@@ -25,7 +25,7 @@ class RequireTests : ColumnsSelectionDslTests() {
     @Test
     fun `require throws when column cannot be resolved`() {
         val exception = shouldThrowAny {
-            df.require { "name"["unknown"]<String>() }
+            df.requireColumn { "name"["unknown"]<String>() }
         }
         exception.message shouldBe
             "Column 'name/unknown' not found among columns of 'name': [firstName, lastName]."
@@ -34,7 +34,7 @@ class RequireTests : ColumnsSelectionDslTests() {
     @Test
     fun `require missing parent message includes available columns`() {
         val exception = shouldThrowAny {
-            df.require { "name2"["unknown"]<String>() }
+            df.requireColumn { "name2"["unknown"]<String>() }
         }
         exception.message shouldBe
             "Column 'name2' not found among [name, age, city, weight, isHappy]."
@@ -43,7 +43,7 @@ class RequireTests : ColumnsSelectionDslTests() {
     @Test
     fun `require deep missing parent message uses nearest existing ancestor`() {
         val exception = shouldThrowAny {
-            df.require { "name"["unknownGroup"]["value"]<String>() }
+            df.requireColumn { "name"["unknownGroup"]["value"]<String>() }
         }
         exception.message shouldBe
             "Column 'name/unknownGroup' not found among columns of 'name': [firstName, lastName]."

docs/StardustDocs/topics/require.md

@@ -8,17 +8,17 @@ The aim here is to help incrementally migrate workflows to [extension properties
 Will work in compiler plugin starting from IntelliJ IDEA 2026.2 and Kotlin 2.4.0.
 
 ```text
-require { column }
+requireColumn { column }
 ```
 
 **Related operations**: [](cast.md), [](convertTo)
 
 ```kotlin
-// Before `require` extension property will not be resolved
+// Before `requireColumn` extension property will not be resolved
 // peopleDf.select { name.firstName }
 
 // Require a column with a runtime check
-val df = peopleDf.require { "name"["firstName"]<String>() }
-// Use extension property after `require`
+val df = peopleDf.requireColumn { "name"["firstName"]<String>() }
+// Use extension property after `requireColumn`
 val v: String = df.name.firstName[0]
 ```