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AIDC Toolkit / GS1 / RemoteGCPLengthCache

Class: RemoteGCPLengthCache ​

Defined in: src/gcp-length-cache.ts:177

GS1 Company Prefix length cache with remote source. This class provides access to the data from a remote source, by default the AIDC Toolkit website. If any error occurs, the next check date/time is set to the current date/time plus ten minutes to prevent the network from being overloaded.

The data on the AIDC Toolkit website is updated regularly with the data provided by GS1, and it's stored in binary format for faster retrieval.

Extends ​

Properties ​

DEFAULT_BASE_URL ​

static DEFAULT_BASE_URL: string

Defined in: src/gcp-length-cache.ts:181

Default base URL pointing to AIDC Toolkit website data directory.

APP_DATA_STORAGE_KEY ​

static APP_DATA_STORAGE_KEY: string = "gcp-length"

Defined in: src/gcp-length-cache.ts:28

Storage key for full application data object.

Inherited from ​

GCPLengthCache.APP_DATA_STORAGE_KEY

NEXT_CHECK_DATE_TIME_STORAGE_KEY ​

static NEXT_CHECK_DATE_TIME_STORAGE_KEY: string = "gcp-length-next-check-date-time"

Defined in: src/gcp-length-cache.ts:33

Storage key for next check date/time.

Inherited from ​

GCPLengthCache.NEXT_CHECK_DATE_TIME_STORAGE_KEY

HEADER_STORAGE_KEY ​

static HEADER_STORAGE_KEY: string = "gcp-length-header"

Defined in: src/gcp-length-cache.ts:38

Storage key for header information (date/time and disclaimer).

Inherited from ​

GCPLengthCache.HEADER_STORAGE_KEY

DATA_STORAGE_KEY ​

static DATA_STORAGE_KEY: string = "gcp-length-data"

Defined in: src/gcp-length-cache.ts:43

Storage key for data only.

Inherited from ​

GCPLengthCache.DATA_STORAGE_KEY

Constructors ​

Constructor ​

new RemoteGCPLengthCache(appDataStorage, baseURL, httpFetch): RemoteGCPLengthCache

Defined in: src/gcp-length-cache.ts:206

Constructor.

Parameters ​

appDataStorage ​

AppDataStorage<boolean>

Application data storage.

baseURL ​

string = RemoteGCPLengthCache.DEFAULT_BASE_URL

Base URL. The URL must not end with a slash and must host the gcp-length-header.json and gcp-length-data.bin files.

httpFetch ​

HTTPFetch = defaultHTTPFetch

HTTP fetch function.

Returns ​

RemoteGCPLengthCache

Overrides ​

GCPLengthCache.constructor

Accessors ​

sourceDateTime ​

Get Signature ​

get sourceDateTime(): Promise<Date>

Defined in: src/gcp-length-cache.ts:251

Get the date/time at which the source was last updated. This should not be called unless the next check date/time has passed, as it may trigger an expensive remote retrieval.

Returns ​

Promise<Date>

Overrides ​

GCPLengthCache.sourceDateTime

sourceData ​

Get Signature ​

get sourceData(): Promise<GCPLengthData>

Defined in: src/gcp-length-cache.ts:268

Get the source data. This should not be called unless the next check date/time has passed, as it may trigger an expensive remote retrieval.

Returns ​

Promise<GCPLengthData>

Overrides ​

GCPLengthCache.sourceData

appDataStorage ​

Get Signature ​

get appDataStorage(): AppDataStorage<boolean>

Defined in: src/gcp-length-cache.ts:70

Get the application data storage.

Returns ​

AppDataStorage<boolean>

Inherited from ​

GCPLengthCache.appDataStorage

nextCheckDateTime ​

Get Signature ​

get nextCheckDateTime(): Promise<Date | undefined>

Defined in: src/gcp-length-cache.ts:120

Inherit Doc ​
Returns ​

Promise<Date | undefined>

Inherited from ​

GCPLengthCache.nextCheckDateTime

cacheDateTime ​

Get Signature ​

get cacheDateTime(): Promise<Date | undefined>

Defined in: src/gcp-length-cache.ts:127

Inherit Doc ​
Returns ​

Promise<Date | undefined>

Inherited from ​

GCPLengthCache.cacheDateTime

cacheData ​

Get Signature ​

get cacheData(): Promise<GCPLengthData>

Defined in: src/gcp-length-cache.ts:134

Inherit Doc ​
Returns ​

Promise<GCPLengthData>

Inherited from ​

GCPLengthCache.cacheData

Methods ​

update() ​

update(nextCheckDateTime, _cacheDateTime?, cacheData?): Promise<void>

Defined in: src/gcp-length-cache.ts:148

Parameters ​

nextCheckDateTime ​

Date

_cacheDateTime? ​

Date

cacheData? ​

GCPLengthData

Returns ​

Promise<void>

Inherit Doc ​

Inherited from ​

GCPLengthCache.update