fix the conversion of public properties within private classes

Author: koperagen

core/generated-sources/src/main/kotlin/org/jetbrains/kotlinx/dataframe/impl/api/toDataFrame.kt

@@ -163,7 +163,7 @@ internal fun convertToDataFrame(
  }
  }
  property.javaField?.isAccessible = true
-// property.isAccessible = true
+ property.isAccessible = true
 
  var nullable = false
  var hasExceptions = false

core/generated-sources/src/test/kotlin/org/jetbrains/kotlinx/dataframe/api/toDataFrame.kt

@@ -284,4 +284,11 @@ class CreateDataFrameTests {
  // In the test above you can see decompiled code that "fixes" this strange wrapping
  result.toString() shouldBe "Speed1(kmh=null)"
  }
+
+ private class PrivateClass(val a: Int)
+
+ @Test
+ fun `convert private class with public members`() {
+ listOf(PrivateClass(1)).toDataFrame() shouldBe dataFrameOf("a")(1)
+ }
 }

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

@@ -163,6 +163,7 @@ internal fun convertToDataFrame(
  }
  }
  property.javaField?.isAccessible = true
+ property.isAccessible = true
 
  var nullable = false
  var hasExceptions = false

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

@@ -284,4 +284,11 @@ class CreateDataFrameTests {
  // In the test above you can see decompiled code that "fixes" this strange wrapping
  result.toString() shouldBe "Speed1(kmh=null)"
  }
+
+ private class PrivateClass(val a: Int)
+
+ @Test
+ fun `convert private class with public members`() {
+ listOf(PrivateClass(1)).toDataFrame() shouldBe dataFrameOf("a")(1)
+ }
 }