Struct Namespace 

pub struct Namespace<E: Engine> {
    pub id: u64,
    /* private fields */
}

Namespace handle for tenant data isolation (u64 numerical identifier) 命名空间句柄对象（纯数字编号 u64 隔离）

Fields

id: u64

Implementations

impl<E: Engine> Namespace<E>

pub const fn id(&self) -> u64

Numerical namespace ID 命名空间数字 ID

pub fn wedb(&self) -> WeDb<E>

Get underlying WeDb reference 获取所属 WeDb 实例句柄

pub fn batch(&self) -> DbBatch<E>

Create a batch write handle 创建批量写入句柄

pub fn batch_with_capacity(&self, capacity: usize) -> DbBatch<E>

Create a batch write handle with pre-allocated capacity 创建具有预分配容量槽位的批量写入句柄

pub fn iter(&self, begin: u64) -> Dbs<'_, E>

Stream iterate all existing databases in this namespace starting from begin ID 纯流式迭代当前命名空间下实际存在的数据库索引（支持从指定起始 begin ID 开始遍历）

impl<E: Engine> Namespace<E>

where Error: From<E::Error>,

pub fn db(&self, id: impl IntoOptId) -> Result<Db<E>>

Open existing database in current namespace by numerical ID, or allocate a new auto-increment database if None is passed. 打开当前命名空间下指定编号的数据库；若传入 None，则自动分配下一个递增自增 ID 并持久化至 Catalog 目录。

pub fn rm(&self) -> Result<u64>

Delete current namespace cascadingly (clears all databases, data, metadata, and auto-increment ID counter in this namespace; deregisters from the catalog so it will no longer appear when iterating) 级联删除当前命名空间（清除该命名空间下的所有数据库、业务数据、元数据与发号器，并从 Catalog 目录中注销，迭代时不复现）

Trait Implementations

impl<E: Engine> Clone for Namespace<E>

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.