类 Data<T>

构成Vector 的底层数据结构。使用便捷方法 makeData。

类型参数

T extends DataType = DataType

索引

构造器

属性

children dictionary? length nullBitmap offset stride TArray TType TValue type typeIds valueOffsets values

访问器

ArrayType buffers byteLength nullable nullCount typeId

方法

_changeLengthAndBackfillNullBitmap clone getValid setValid slice

构造器

constructor

new Data<T extends DataType<Type, any> = DataType<Type, any>>(
    type: T,
    offset: number,
    length: number,
    nullCount?: number,
    buffers?: Data<T> | Partial<Buffers<T>>,
    children?: Data<DataType<Type, any>>[],
    dictionary?: Vector<any>,
): Data<T>
类型参数
- T extends DataType<Type, any> = DataType<Type, any>
参数
- type: T
- offset: number
- length: number
- OptionalnullCount: number
- Optionalbuffers: Data<T> | Partial<Buffers<T>>
- children: Data<DataType<Type, any>>[] = []
- Optionaldictionary: Vector<any>
返回值 Data<T>
- 定义于 data.ts:120

属性

`Readonly`children

children: Data<DataType<Type, any>>[]

`Optional`dictionary

dictionary?: Vector<any>

此向量的字典（如果有）。仅用于字典类型。

`Readonly`length

length: number

`Readonly`nullBitmap

nullBitmap: Uint8Array

`Readonly`offset

offset: number

`Readonly`stride

stride: number

`Readonly`TArray

TArray: T["TArray"]

`Readonly`TType

TType: T["TType"]

`Readonly`TValue

TValue: T["TValue"]

`Readonly`type

type: T

`Readonly`typeIds

typeIds: T["TArray"]

`Readonly`valueOffsets

valueOffsets: T["TOffsetArray"]

`Readonly`values

values: T["TArray"]

访问器

ArrayType

get ArrayType(): T["ArrayType"]
返回 T["ArrayType"]
- 定义于 data.ts:74

buffers

get buffers(): Buffers<T>
返回 Buffers<T>
- 定义于 data.ts:76

byteLength

get byteLength(): number
返回 number
- 定义于 data.ts:93

nullable

get nullable(): boolean
返回 boolean
- 定义于 data.ts:80

nullCount

get nullCount(): number
返回 number
- 定义于 data.ts:105

typeId

get typeId(): T["TType"]
返回 T["TType"]
- 定义于 data.ts:72

方法

_changeLengthAndBackfillNullBitmap

_changeLengthAndBackfillNullBitmap(newLength: number): Data<T>
参数
- newLength: number
返回值 Data<T>
- 定义于 data.ts:220

clone

clone<R extends DataType<Type, any> = T>(
    type?: R,
    offset?: number,
    length?: number,
    nullCount?: number,
    buffers?: Buffers<R>,
    children?: Data<DataType<Type, any>>[],
): Data<R>
类型参数
- R extends DataType<Type, any> = T
参数
- type: R = ...
- offset: number = ...
- length: number = ...
- nullCount: number = ...
- buffers: Buffers<R> = ...
- children: Data<DataType<Type, any>>[] = ...
返回 Data<R>
- 定义于 data.ts:203

getValid

getValid(index: number): boolean
参数
- index: number
返回 boolean
- 定义于 data.ts:145

setValid

setValid(index: number, value: boolean): boolean
参数
- index: number
- value: boolean
返回 boolean
- 定义于 data.ts:161

slice

slice(offset: number, length: number): Data<T>
参数
- offset: number
- length: number
返回值 Data<T>
- 定义于 data.ts:207