Class ArrayColumn

constructor

• new ArrayColumn(
      length: number,
      options: {
          fallback: readonly (ArrayValue | undefined)[];
          validity?: ValidityBitmap;
      },
  ): ArrayColumn

  Parameters

  • length: number
  • options: { fallback: readonly (ArrayValue | undefined)[]; validity?: ValidityBitmap }

  Returns ArrayColumn

Readonlyfallback

Readonlykind

Readonlylength

Readonlystorage

Optional Readonlyvalidity

at

• at(i: number): readonly ScalarValue[] | undefined

  Parameters

  • i: number

  Returns readonly ScalarValue[] | undefined

first

• first(): readonly ScalarValue[] | undefined

  Returns readonly ScalarValue[] | undefined

firstDefined

• firstDefined(): readonly ScalarValue[] | undefined

  Returns readonly ScalarValue[] | undefined

hasMissing

• hasMissing(): boolean

  Returns boolean

last

• last(): readonly ScalarValue[] | undefined

  Returns readonly ScalarValue[] | undefined

lastDefined

• lastDefined(): readonly ScalarValue[] | undefined

  Returns readonly ScalarValue[] | undefined

nullCount

• nullCount(): number

  Returns number

read

• read(i: number): ArrayValue | undefined

  Parameters

  • i: number

  Returns ArrayValue | undefined

scan

• scan(fn: (value: ArrayValue, i: number) => void, options?: ScanOptions): void

  Linear scan with callback. skipInvalid defaults to true. When skipInvalid: false, invalid rows receive the empty-array sentinel EMPTY_ARRAY_SENTINEL (a single shared frozen empty array), matching the no-mode-divergence pattern that the StringColumn '' sentinel established in 1b. Callers consult column.validity to disambiguate a real empty array from the sentinel.

  Parameters

  • fn: (value: ArrayValue, i: number) => void
  • Optionaloptions: ScanOptions

  Returns void

slice

• slice(start: number, end: number): ArrayColumn

  Parameters

  • start: number
  • end: number

  Returns ArrayColumn

sliceByIndices

• sliceByIndices(sourceRowIndices: Int32Array): ArrayColumn

  Parameters

  • sourceRowIndices: Int32Array

  Returns ArrayColumn

sliceByRange

• sliceByRange(start: number, end: number): ArrayColumn

  Parameters

  • start: number
  • end: number

  Returns ArrayColumn