Class DataStoreClass

Constructors

constructor

Properties

configure delete observe observeQuery query save setConflictHandler setErrorHandler start

Methods

clear getModuleName handleAddProcError stop

Constructors

constructor

Properties

configure

configure: ((config?) => void)

Type declaration

delete

delete: {
    <T>(modelConstructor, identifier): Promise<T[]>;
    <T>(modelConstructor, condition): Promise<T[]>;
    <T>(model, condition?): Promise<T>;
}

Type declaration

observe

observe: {
    (): Observable<SubscriptionMessage<Readonly<Record<string, any>>>>;
    <T>(modelConstructor, identifier): Observable<SubscriptionMessage<T>>;
    <T>(modelConstructor, criteria?): Observable<SubscriptionMessage<T>>;
    <T>(model): Observable<SubscriptionMessage<T>>;
}

Type declaration

observeQuery

observeQuery: (<T>(modelConstructor, criteria?, paginationProducer?) => Observable<DataStoreSnapshot<T>>)

Type declaration

query

query: {
    <T>(modelConstructor, identifier): Promise<undefined | T>;
    <T>(modelConstructor, criteria?, paginationProducer?): Promise<T[]>;
}

Type declaration

save

save: (<T>(model, condition?) => Promise<T>)

Type declaration

setConflictHandler

setConflictHandler: ((config) => ConflictHandler)

Type declaration

setErrorHandler

setErrorHandler: ((config) => ErrorHandler)

Type declaration

start

start: (() => Promise<void>)

If not already done:

  1. Attaches and initializes storage.
  2. Loads the schema and records metadata.
  3. If this.amplifyConfig.aws_appsync_graphqlEndpoint contains a URL, attaches a sync engine, starts it, and subscribes.

Type declaration

    • (): Promise<void>

    • If not already done:

      1. Attaches and initializes storage.
      2. Loads the schema and records metadata.
      3. If this.amplifyConfig.aws_appsync_graphqlEndpoint contains a URL, attaches a sync engine, starts it, and subscribes.

      Returns Promise<void>

Methods

clear

  • clear(): Promise<void>

  • Clears all data from storage and removes all data, schema info, other initialization details, and then stops DataStore.

    That said, reinitialization is required after clearing. This can be done by explicitiliy calling start() or any method that implicitly starts DataStore, such as query(), save(), or delete().

    Returns Promise<void>

getModuleName

  • getModuleName(): string

  • Returns string

handleAddProcError

  • handleAddProcError(operation): ((err) => never)

  • Builds a function to capture BackgroundManagerNotOpenError's to produce friendlier, more instructive errors for customers.

    Parameters

    • operation: string

      The name of the operation (usually a Datastore method) the customer tried to call.

    Returns ((err) => never)

      • (err): never

      • Parameters

        • err: Error

        Returns never

stop

  • stop(this): Promise<void>

  • Stops all DataStore sync activities.

    TODO: "Waits for graceful termination of running queries and terminates subscriptions."

    Parameters

    Returns Promise<void>

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