Packages > @fluidframework/map
@fluidframework/map Package
The map package provides interfaces and implementing classes for map-like distributed data structures.
Remarks
The following distributed data structures are defined in this package:
Interfaces
| Interface | Description |
|---|---|
| IDirectory | Interface describing actions on a directory. |
| IDirectoryClearOperation | Operation indicating the directory should be cleared. |
| IDirectoryCreateSubDirectoryOperation | Operation indicating a subdirectory should be created. |
| IDirectoryDataObject | Defines the in-memory object structure to be used for the conversion to/from serialized. |
| IDirectoryDeleteOperation | Operation indicating a key should be deleted from the directory. |
| IDirectoryDeleteSubDirectoryOperation | Operation indicating a subdirectory should be deleted. |
| IDirectoryEvents | Events emitted in response to changes to the directory data. |
| IDirectoryNewStorageFormat | |
| IDirectorySetOperation | Operation indicating a value should be set for a key. |
| IDirectoryValueChanged | Type of "valueChanged" event parameter for SharedDirectory. |
| ILocalValue | A local value to be stored in a container type DDS. |
| ISerializableValue | The _ready-for-serialization_ format of values contained in DDS contents. This allows us to use ISerializableValue.type to understand whether they're storing a Plain JS object, a SharedObject, or a value type. |
| ISerializedValue | |
| ISharedDirectory | Interface describing a shared directory. |
| ISharedDirectoryEvents | Events emitted in response to changes to the directory data. These events only emit on the ISharedDirectory itself, and not on subdirectories. |
| ISharedMap | Shared map interface |
| ISharedMapEvents | Events emitted in response to changes to the map data. |
| IValueChanged | Type of "valueChanged" event parameter. |
Classes
| Class | Modifiers | Description |
|---|---|---|
| DirectoryFactory |
sealed
|
The factory that defines the directory. |
| LocalValueMaker | A LocalValueMaker enables a container type DDS to produce and store local values with minimal awareness of how those objects are stored, serialized, and deserialized. | |
| MapFactory |
sealed
|
The factory that defines the map. |
| SharedDirectory |
sealed
|
SharedDirectory provides a hierarchical organization of map-like data structures as SubDirectories. The values stored within can be accessed like a map, and the hierarchy can be navigated using path syntax. SubDirectories can be retrieved for use as working directories. |
| SharedMap | The SharedMap distributed data structure can be used to store key-value pairs. It provides the same API for setting and retrieving values that JavaScript developers are accustomed to with the Map built-in object. However, the keys of a SharedMap must be strings. |
Types
| TypeAlias | Description |
|---|---|
| IDirectoryKeyOperation | An operation on a specific key within a directory |
| IDirectoryOperation | Any operation on a directory |
| IDirectoryStorageOperation | An operation on one or more of the keys within a directory |
| IDirectorySubDirectoryOperation | An operation on the subdirectories within a directory |