程序包 ohos.data.distributed.common

Provides public classes or interfaces.

These classes or interfaces can be used by the classes or interfaces in ohos.data.distributed.device or ohos.data.distributed.user.

从以下版本开始:

1

接口概要

接口	说明
KvManager	Provides interfaces to manage a KvStore database, including obtaining, closing, and deleting the KvStore.
KvStore	Represents a key-value distributed database and provides methods for adding, deleting, modifying, querying, and subscribing to distributed data.
KvStoreObserver	Listens for data changes in the KvStore database.
KvStoreResultSet	Provide methods to obtain the result set of the KvStore database.
KvStoreServiceDeathRecipient	Provides the callback that is invoked when the KvStore service stops running.
SyncCallback	A callback interface used to receive database synchronization results.

类概要

类	说明
ChangeNotification	Receives notifications of all data changes, including data insertion, update, and deletion.
Entry	Provides key-value pairs stored in the distributed database.
FieldNode	Represents a node of a Schema instance.
KvManagerConfig	Provides configuration information for KvManager instances, including the caller's package name and distributed network type.
KvManagerFactory	A factory that manages KvManager instances, including creating and obtaining KvManager instances.
Options	Provides configuration options for creating a KvStore.
Query	Represents a database query using a predicate.
Schema	Represents the database schema.
UserInfo	Manages user information.
Value	Obtains Value objects stored in a KvStore database.

枚举概要

枚举	说明
FieldValueType	Enumerates field value types.
KvStoreErrorCode	Indicates the error codes for KvStore database exceptions.
KvStoreType	Describes the KvStore type.
SchemaMode	Enumerates schema modes.
SecurityLevel	Enumerates security levels.
SubscribeType	Describes the subscription type.
SyncMode	Indicates the database synchronization mode.
UserType	Enumerates user types.

异常错误概要

异常错误	说明
KvStoreException	Provides KvStoreException constructors and the method for obtaining kvStoreErrorCode.