core/org.jetbrains.kotlinx.dataframe.impl.schema

Package-level declarations

Types

DataFrameSchemaImpl

class DataFrameSchemaImpl(val columns: Map<String, ColumnSchema>) : DataFrameSchema

DataFrameSchema implementation.

Functions

createEmptyColumn

internal fun ColumnSchema.createEmptyColumn(name: String): AnyCol

Create "empty" column based on the toplevel of this ColumnSchema.

createEmptyDataFrame

internal fun DataFrameSchema.createEmptyDataFrame(): AnyFrame

internal fun DataFrameSchema.createEmptyDataFrame(numberOfRows: Int): AnyFrame

createEmptyDataFrameOf

internal fun createEmptyDataFrameOf(clazz: KClass<*>): AnyFrame

createNullFilledColumn

internal fun ColumnSchema.createNullFilledColumn(name: String, numberOfRows: Int): AnyCol

Creates a column based on this ColumnSchema filled with null or empty dataframes.

internal fun AnyCol.extractSchema(): ColumnSchema

internal fun AnyFrame.extractSchema(): DataFrameSchema

getPropertyOrderFromPrimaryConstructor

internal fun getPropertyOrderFromPrimaryConstructor(clazz: KClass<*>): Map<String, Int>?

Returns a map of property names to their order in the primary/single constructor, if it exists, null otherwise.

internal fun getSchema(kClass: KClass<*>): DataFrameSchema

intersectSchemas

@JvmName(name = "intersectSchemasOverload")

internal fun intersectSchemas(schemas: Iterable<DataFrameSchema>): DataFrameSchema

intersectSchemas

internal fun Iterable<DataFrameSchema>.intersectSchemas(): DataFrameSchema

internal fun DataFrameSchemaImpl.render(): String

internal fun Map<String, ColumnSchema>.render(indent: Int, sb: StringBuilder, indentSequence: String): String

sortWithConstructor

internal fun <T> Iterable<KCallable<T>>.sortWithConstructor(klass: KClass<*>): List<KCallable<T>>

Sorts this according to the order of their columnName in the primary/single constructor of klass if it exists, else, it falls back to lexicographical sorting.