apache-arrow/vector/chunked.d.ts

Apache Arrow columnar in-memory format

import { Data } from '../data';
import { DataType, Dictionary } from '../type';
import { AbstractVector, Vector } from '../vector';
import { Clonable, Sliceable, Applicative } from '../vector';
/** @ignore */
declare type ChunkedDict<T extends DataType> = T extends Dictionary ? Vector<T['dictionary']> : null | never;
/** @ignore */
declare type ChunkedKeys<T extends DataType> = T extends Dictionary ? Vector<T['indices']> | Chunked<T['indices']> : null | never;
/** @ignore */
export declare type SearchContinuation<T extends Chunked> = (column: T, chunkIndex: number, valueIndex: number) => any;
/** @ignore */
export declare class Chunked<T extends DataType = any> extends AbstractVector<T> implements Clonable<Chunked<T>>, Sliceable<Chunked<T>>, Applicative<T, Chunked<T>> {
    /** @nocollapse */
    static flatten<T extends DataType>(...vectors: (Vector<T> | Vector<T>[])[]): AbstractVector<T>[];
    /** @nocollapse */
    static concat<T extends DataType>(...vectors: (Vector<T> | Vector<T>[])[]): Chunked<T>;
    protected _type: T;
    protected _length: number;
    protected _chunks: Vector<T>[];
    protected _numChildren: number;
    protected _children?: Chunked[];
    protected _nullCount: number;
    protected _chunkOffsets: Uint32Array;
    constructor(type: T, chunks?: Vector<T>[], offsets?: Uint32Array);
    get type(): T;
    get length(): number;
    get chunks(): AbstractVector<T>[];
    get typeId(): T['TType'];
    get VectorName(): string;
    get data(): Data<T>;
    get ArrayType(): any;
    get numChildren(): number;
    get stride(): number;
    get byteLength(): number;
    get nullCount(): number;
    protected _indices?: ChunkedKeys<T>;
    get indices(): ChunkedKeys<T> | null;
    get dictionary(): ChunkedDict<T> | null;
    [Symbol.iterator](): IterableIterator<T['TValue'] | null>;
    clone(chunks?: AbstractVector<T>[]): Chunked<T>;
    concat(...others: Vector<T>[]): Chunked<T>;
    slice(begin?: number, end?: number): Chunked<T>;
    getChildAt<R extends DataType = any>(index: number): Chunked<R> | null;
    search(index: number): [number, number] | null;
    search<N extends SearchContinuation<Chunked<T>>>(index: number, then?: N): ReturnType<N>;
    isValid(index: number): boolean;
    get(index: number): T['TValue'] | null;
    set(index: number, value: T['TValue'] | null): void;
    indexOf(element: T['TValue'], offset?: number): number;
    toArray(): T['TArray'];
    protected getInternal({ _chunks }: Chunked<T>, i: number, j: number): T["TValue"] | null;
    protected isValidInternal({ _chunks }: Chunked<T>, i: number, j: number): boolean;
    protected indexOfInternal({ _chunks }: Chunked<T>, chunkIndex: number, fromIndex: number, element: T['TValue']): number;
    protected _sliceInternal(self: Chunked<T>, begin: number, end: number): Chunked<T>;
}
export {};