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Interface PersistentDataStoreBase

Base interface for a simplified subset of the functionality of LDFeatureStore, to be used in conjunction with CachingStoreWrapper.

see

PersistentDataStore

see

PersistentDataStoreNonAtomic

Hierarchy

Index

Methods

Methods

close

  • close(): void

  • Releases any resources being used by the feature store.

    Returns void

getAllInternal

  • Get all entities from a collection.

    The store should filter out any entities with the property deleted: true.

    Parameters

    • kind: DataKind

      The type of data to be accessed. The store should not make any assumptions about the format of the data, but just return an object in which each key is the key property of an entity and the value is the entity. The actual type of this parameter is [[interfaces.DataKind]].

    • callback: (res: KeyedItems<VersionedData>) => void

      Will be called with the resulting map.

    Returns void

getInternal

  • Get an entity from the store.

    Parameters

    • kind: DataKind

      The type of data to be accessed. The store should not make any assumptions about the format of the data, but just return a JSON object.

    • key: string

      The unique key of the entity within the specified collection.

    • callback: (res: VersionedData) => void

      Will be called with the retrieved entity, or null if not found.

    Returns void

initializedInternal

  • initializedInternal(callback: (isInitialized: boolean) => void): void

  • Tests whether the store is initialized.

    "Initialized" means that the store has been populated with data, either by the client having called init() within this process, or by another process (if this is a shared database).

    Parameters

    • callback: (isInitialized: boolean) => void

      Will be called back with the boolean result.

        • (isInitialized: boolean): void

        • Parameters

          • isInitialized: boolean

          Returns void

    Returns void

upsertInternal

  • Add an entity or update an existing entity.

    Parameters

    • kind: DataKind

      The type of data to be accessed.

    • item: VersionedData

      The contents of the entity, as an object that can be converted to JSON. The store should check the version property of this object, and should not overwrite any existing data if the existing version is greater than or equal to that value.

    • callback: (err: Error, finalItem: VersionedData) => void

      Will be called after the upsert operation is complete.

    Returns void

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