Class _IndexedDB

Hierarchy

_IndexedDB

Index

Constructors

Properties

Methods

_open createObjectStore deleteDatabase deleteObjectStore getAllKeys getDatabase getObjectStoreNames hasObjectStore objectStoreClear objectStoreDelete objectStoreGet objectStorePut support

Constructors

constructor

new _IndexedDB(): _IndexedDB
Returns _IndexedDB

Properties

`Private` _dbStatus

_dbStatus: {
    [dbname: string]: {
        onsuccessCallbacks: ((err: Error, database: IDBDatabase) => void)[];
        onupgradeneededCallbacks: ((newdatabase: IDBDatabase) => void)[];
        status: DBStatus;
    };
} = {}

数据库状态

Type declaration

[dbname: string]: {
    onsuccessCallbacks: ((err: Error, database: IDBDatabase) => void)[];
    onupgradeneededCallbacks: ((newdatabase: IDBDatabase) => void)[];
    status: DBStatus;
}
- onsuccessCallbacks: ((err: Error, database: IDBDatabase) => void)[]
  
  开启或者升级成功回调
- onupgradeneededCallbacks: ((newdatabase: IDBDatabase) => void)[]
  
  升级回调
- status: DBStatus
  
  状态

Methods

`Private` _open

_open(dbname: string, callback: ((err: any, database: IDBDatabase) => void), upgrade?: boolean, onupgrade?: ((newdatabase: IDBDatabase) => void)): void
打开或者升级数据库
Parameters
- dbname: string
  
  数据库名称
- callback: ((err: any, database: IDBDatabase) => void)
  
  完成回调
  - - (err: any, database: IDBDatabase): void
    - Parameters
      
      err: any
      
      database: IDBDatabase
      
      Returns void
- upgrade: boolean = false
  
  是否升级数据库
- Optional onupgrade: ((newdatabase: IDBDatabase) => void)
  
  升级回调
  - - (newdatabase: IDBDatabase): void
    - Parameters
      
      newdatabase: IDBDatabase
      
      Returns void
Returns void
- Defined in src/filesystem/base/_IndexedDB.ts:79

createObjectStore

createObjectStore(dbname: string, objectStroreName: string): Promise<void>
创建对象存储
Parameters
- dbname: string
  
  数据库名称
- objectStroreName: string
  
  对象存储名称
Returns Promise<void>
- Defined in src/filesystem/base/_IndexedDB.ts:215

deleteDatabase

deleteDatabase(dbname: string): Promise<void>
删除数据库
Parameters
- dbname: string
  
  数据库名称
Returns Promise<void>
- Defined in src/filesystem/base/_IndexedDB.ts:159

deleteObjectStore

deleteObjectStore(dbname: string, objectStroreName: string): Promise<void>
删除对象存储
Parameters
- dbname: string
  
  数据库名称
- objectStroreName: string
  
  对象存储名称
Returns Promise<void>
- Defined in src/filesystem/base/_IndexedDB.ts:248

getAllKeys

getAllKeys(dbname: string, objectStroreName: string): Promise<string[]>
获取对象存储中所有键列表
Parameters
- dbname: string
  
  数据库名称
- objectStroreName: string
  
  对象存储名称
Returns Promise<string[]>
- Defined in src/filesystem/base/_IndexedDB.ts:281

getDatabase

getDatabase(dbname: string): Promise<IDBDatabase>
获取数据库，如果不存在则新建数据库
Parameters
- dbname: string
  
  数据库名称
Returns Promise<IDBDatabase>
- Defined in src/filesystem/base/_IndexedDB.ts:46

getObjectStoreNames

getObjectStoreNames(dbname: string): Promise<string[]>
获取对象存储名称列表
Parameters
- dbname: string
  
  数据库
Returns Promise<string[]>
- Defined in src/filesystem/base/_IndexedDB.ts:197

hasObjectStore

hasObjectStore(dbname: string, objectStroreName: string): Promise<boolean>
是否存在指定的对象存储
Parameters
- dbname: string
  
  数据库名称
- objectStroreName: string
  
  对象存储名称
Returns Promise<boolean>
- Defined in src/filesystem/base/_IndexedDB.ts:185

objectStoreClear

objectStoreClear(dbname: string, objectStroreName: string): Promise<void>
清空对象存储中数据
Parameters
- dbname: string
  
  数据库名称
- objectStroreName: string
  
  对象存储名称
Returns Promise<void>
- Defined in src/filesystem/base/_IndexedDB.ts:411

objectStoreDelete

objectStoreDelete(dbname: string, objectStroreName: string, key: string | number): Promise<void>
删除对象存储中指定键以及对于数据
Parameters
- dbname: string
  
  数据库名称
- objectStroreName: string
  
  对象存储名称
- key: string | number
  
  键
Returns Promise<void>
- Defined in src/filesystem/base/_IndexedDB.ts:381

objectStoreGet

objectStoreGet(dbname: string, objectStroreName: string, key: string | number): Promise<unknown>
获取对象存储中指定键对应的数据
Parameters
- dbname: string
  
  数据库名称
- objectStroreName: string
  
  对象存储名称
- key: string | number
  
  键
Returns Promise<unknown>
- Defined in src/filesystem/base/_IndexedDB.ts:315

objectStorePut

objectStorePut(dbname: string, objectStroreName: string, key: string | number, data: any): Promise<void>
设置对象存储的键与值，如果不存在指定键则新增否则修改。
Parameters
- dbname: string
  
  数据库名称
- objectStroreName: string
  
  对象存储名称
- key: string | number
  
  键
- data: any
  
  数据
Returns Promise<void>
- Defined in src/filesystem/base/_IndexedDB.ts:350

support

support(): boolean
是否支持 indexedDB

Returns boolean
- Defined in src/filesystem/base/_IndexedDB.ts:31

Class _IndexedDB

Hierarchy

Index

Constructors

Properties

Methods

Constructors

constructor

Returns _IndexedDB

Properties

Private _dbStatus

Type declaration

[dbname: string]: { onsuccessCallbacks: ((err: Error, database: IDBDatabase) => void)[]; onupgradeneededCallbacks: ((newdatabase: IDBDatabase) => void)[]; status: DBStatus; }

onsuccessCallbacks: ((err: Error, database: IDBDatabase) => void)[]

onupgradeneededCallbacks: ((newdatabase: IDBDatabase) => void)[]

status: DBStatus

Methods

Private _open

Parameters

dbname: string

callback: ((err: any, database: IDBDatabase) => void)

Parameters

err: any

database: IDBDatabase

Returns void

upgrade: boolean = false

Optional onupgrade: ((newdatabase: IDBDatabase) => void)

Parameters

newdatabase: IDBDatabase

Returns void

Returns void

createObjectStore

Parameters

dbname: string

objectStroreName: string

Returns Promise<void>

deleteDatabase

Parameters

dbname: string

Returns Promise<void>

deleteObjectStore

Parameters

dbname: string

objectStroreName: string

Returns Promise<void>

getAllKeys

Parameters

dbname: string

objectStroreName: string

Returns Promise<string[]>

getDatabase

Parameters

dbname: string

Returns Promise<IDBDatabase>

getObjectStoreNames

Parameters

dbname: string

Returns Promise<string[]>

hasObjectStore

Parameters

dbname: string

objectStroreName: string

Returns Promise<boolean>

objectStoreClear

Parameters

dbname: string

objectStroreName: string

Returns Promise<void>

objectStoreDelete

Parameters

dbname: string

objectStroreName: string

key: string | number

Returns Promise<void>

objectStoreGet

Parameters

dbname: string

objectStroreName: string

key: string | number

Returns Promise<unknown>

`Private` _dbStatus

[dbname: string]: {
onsuccessCallbacks: ((err: Error, database: IDBDatabase) => void)[];
onupgradeneededCallbacks: ((newdatabase: IDBDatabase) => void)[];
status: DBStatus;
}

`Private` _open

`Optional` onupgrade: ((newdatabase: IDBDatabase) => void)