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parquet

Classes​

ParquetTableData​

Defined in: data/loaders/parquet.ts:17

Implements​

Constructors​

Constructor​

new ParquetTableData(buffer, metadata): ParquetTableData

Defined in: data/loaders/parquet.ts:22

Parameters​
buffer​

AsyncBuffer

metadata​

FileMetaData

Returns​

ParquetTableData

Methods​

destroy()​

destroy(): void

Defined in: data/loaders/parquet.ts:53

Returns​

void

Implementation of​

ITableData.destroy

getColumns()​

getColumns(): string[]

Defined in: data/loaders/parquet.ts:34

Returns​

string[]

Implementation of​

ITableData.getColumns

getLength()​

getLength(): number

Defined in: data/loaders/parquet.ts:30

Returns​

number

Implementation of​

ITableData.getLength

loadColumn()​

loadColumn<T>(column, signal?): Promise<MappableArrayLike<T>>

Defined in: data/loaders/parquet.ts:38

Type Parameters​
T​

T

Parameters​
column​

string

signal?​

AbortSignal

Returns​

Promise<MappableArrayLike<T>>

Implementation of​

ITableData.loadColumn

ParquetTableDataLoader​

Defined in: data/loaders/parquet.ts:56

Extends​

Constructors​

Constructor​

new ParquetTableDataLoader(dataSource, projectDir): ParquetTableDataLoader

Defined in: data/loaders/base.ts:20

Parameters​
dataSource​

IParquetTableDataSourceModel

projectDir​

null | FileSystemDirectoryHandle

Returns​

ParquetTableDataLoader

Inherited from​

TableDataLoaderBase.constructor

Properties​

dataSource​

protected readonly dataSource: IParquetTableDataSourceModel

Defined in: data/loaders/base.ts:17

Inherited from​

TableDataLoaderBase.dataSource

workspace​

protected readonly workspace: null | FileSystemDirectoryHandle

Defined in: data/loaders/base.ts:18

Inherited from​

TableDataLoaderBase.workspace

Methods​

loadTable()​

loadTable(signal?): Promise<ParquetTableData>

Defined in: data/loaders/parquet.ts:60

Parameters​
signal?​

AbortSignal

Returns​

Promise<ParquetTableData>

Overrides​

TableDataLoaderBase.loadTable

Interfaces​

IParquetTableDataSourceModel​

Defined in: data/loaders/parquet.ts:12

A data source for tables

Extends​

Properties​

headers?​

optional headers: object

Defined in: data/loaders/parquet.ts:14

Index Signature​

[headerName: string]: string

path?​

optional path: string

Defined in: models/base.ts:45

Local path (relative to workspace root)

Inherited from​

ITableDataSourceModel.path

type​

type: "parquet"

Defined in: models/base.ts:39

Data source type

Inherited from​

ITableDataSourceModel.type

url?​

optional url: string

Defined in: models/base.ts:42

Remote URL (absolute or relative to TissUUmaps root)

Inherited from​

ITableDataSourceModel.url

Variables​

PARQUET_TABLE_DATA_SOURCE​

const PARQUET_TABLE_DATA_SOURCE: "parquet" = "parquet"

Defined in: data/loaders/parquet.ts:10