@142vip.nest typeorm.类.ReadPreference

API 参考 / @142vip/nest-typeorm / ReadPreference

类: ReadPreference

定义于: node_modules/.pnpm/typeorm@0.3.30_ioredis@5.6.0_mongodb@6.19.0_mssql@11.0.1_mysql2@3.15.1_pg@8.11.3_ts-node@10.9_6zvdq3z7xgsf663jy3j6oymho4/node_modules/typeorm/driver/mongodb/typings.d.ts:4443

The ReadPreference class is a class that represents a MongoDB ReadPreference and is used to construct connections.

参阅

https://www.mongodb.com/docs/manual/core/read-preference/

构造函数

构造函数

new ReadPreference(mode, tags?, options?): ReadPreference

定义于: node_modules/.pnpm/typeorm@0.3.30_ioredis@5.6.0_mongodb@6.19.0_mssql@11.0.1_mysql2@3.15.1_pg@8.11.3_ts-node@10.9_6zvdq3z7xgsf663jy3j6oymho4/node_modules/typeorm/driver/mongodb/typings.d.ts:4464

参数

mode

ReadPreferenceMode

A string describing the read preference mode (primary|primaryPreferred|secondary|secondaryPreferred|nearest)

tags?

TagSet[]

A tag set used to target reads to members with the specified tag(s). tagSet is not available if using read preference mode primary.

options?

ReadPreferenceOptions

Additional read preference options

返回

ReadPreference

属性

hedge?

optional hedge?: HedgeOptions

定义于: node_modules/.pnpm/typeorm@0.3.30_ioredis@5.6.0_mongodb@6.19.0_mssql@11.0.1_mysql2@3.15.1_pg@8.11.3_ts-node@10.9_6zvdq3z7xgsf663jy3j6oymho4/node_modules/typeorm/driver/mongodb/typings.d.ts:4446

---

maxStalenessSeconds?

optional maxStalenessSeconds?: number

定义于: node_modules/.pnpm/typeorm@0.3.30_ioredis@5.6.0_mongodb@6.19.0_mssql@11.0.1_mysql2@3.15.1_pg@8.11.3_ts-node@10.9_6zvdq3z7xgsf663jy3j6oymho4/node_modules/typeorm/driver/mongodb/typings.d.ts:4447

---

minWireVersion?

optional minWireVersion?: number

定义于: node_modules/.pnpm/typeorm@0.3.30_ioredis@5.6.0_mongodb@6.19.0_mssql@11.0.1_mysql2@3.15.1_pg@8.11.3_ts-node@10.9_6zvdq3z7xgsf663jy3j6oymho4/node_modules/typeorm/driver/mongodb/typings.d.ts:4448

---

mode

mode: ReadPreferenceMode

定义于: node_modules/.pnpm/typeorm@0.3.30_ioredis@5.6.0_mongodb@6.19.0_mssql@11.0.1_mysql2@3.15.1_pg@8.11.3_ts-node@10.9_6zvdq3z7xgsf663jy3j6oymho4/node_modules/typeorm/driver/mongodb/typings.d.ts:4444

---

tags?

optional tags?: TagSet[]

定义于: node_modules/.pnpm/typeorm@0.3.30_ioredis@5.6.0_mongodb@6.19.0_mssql@11.0.1_mysql2@3.15.1_pg@8.11.3_ts-node@10.9_6zvdq3z7xgsf663jy3j6oymho4/node_modules/typeorm/driver/mongodb/typings.d.ts:4445

---

nearest

static nearest: ReadPreference

定义于: node_modules/.pnpm/typeorm@0.3.30_ioredis@5.6.0_mongodb@6.19.0_mssql@11.0.1_mysql2@3.15.1_pg@8.11.3_ts-node@10.9_6zvdq3z7xgsf663jy3j6oymho4/node_modules/typeorm/driver/mongodb/typings.d.ts:4458

---

NEAREST

static NEAREST: "nearest"

定义于: node_modules/.pnpm/typeorm@0.3.30_ioredis@5.6.0_mongodb@6.19.0_mssql@11.0.1_mysql2@3.15.1_pg@8.11.3_ts-node@10.9_6zvdq3z7xgsf663jy3j6oymho4/node_modules/typeorm/driver/mongodb/typings.d.ts:4453

---

primary

static primary: ReadPreference

定义于: node_modules/.pnpm/typeorm@0.3.30_ioredis@5.6.0_mongodb@6.19.0_mssql@11.0.1_mysql2@3.15.1_pg@8.11.3_ts-node@10.9_6zvdq3z7xgsf663jy3j6oymho4/node_modules/typeorm/driver/mongodb/typings.d.ts:4454

---

PRIMARY

static PRIMARY: "primary"

定义于: node_modules/.pnpm/typeorm@0.3.30_ioredis@5.6.0_mongodb@6.19.0_mssql@11.0.1_mysql2@3.15.1_pg@8.11.3_ts-node@10.9_6zvdq3z7xgsf663jy3j6oymho4/node_modules/typeorm/driver/mongodb/typings.d.ts:4449

---

PRIMARY_PREFERRED

static PRIMARY_PREFERRED: "primaryPreferred"

定义于: node_modules/.pnpm/typeorm@0.3.30_ioredis@5.6.0_mongodb@6.19.0_mssql@11.0.1_mysql2@3.15.1_pg@8.11.3_ts-node@10.9_6zvdq3z7xgsf663jy3j6oymho4/node_modules/typeorm/driver/mongodb/typings.d.ts:4450

---

primaryPreferred

static primaryPreferred: ReadPreference

定义于: node_modules/.pnpm/typeorm@0.3.30_ioredis@5.6.0_mongodb@6.19.0_mssql@11.0.1_mysql2@3.15.1_pg@8.11.3_ts-node@10.9_6zvdq3z7xgsf663jy3j6oymho4/node_modules/typeorm/driver/mongodb/typings.d.ts:4455

---

secondary

static secondary: ReadPreference

定义于: node_modules/.pnpm/typeorm@0.3.30_ioredis@5.6.0_mongodb@6.19.0_mssql@11.0.1_mysql2@3.15.1_pg@8.11.3_ts-node@10.9_6zvdq3z7xgsf663jy3j6oymho4/node_modules/typeorm/driver/mongodb/typings.d.ts:4456

---

SECONDARY

static SECONDARY: "secondary"

定义于: node_modules/.pnpm/typeorm@0.3.30_ioredis@5.6.0_mongodb@6.19.0_mssql@11.0.1_mysql2@3.15.1_pg@8.11.3_ts-node@10.9_6zvdq3z7xgsf663jy3j6oymho4/node_modules/typeorm/driver/mongodb/typings.d.ts:4451

---

SECONDARY_PREFERRED

static SECONDARY_PREFERRED: "secondaryPreferred"

定义于: node_modules/.pnpm/typeorm@0.3.30_ioredis@5.6.0_mongodb@6.19.0_mssql@11.0.1_mysql2@3.15.1_pg@8.11.3_ts-node@10.9_6zvdq3z7xgsf663jy3j6oymho4/node_modules/typeorm/driver/mongodb/typings.d.ts:4452

---

secondaryPreferred

static secondaryPreferred: ReadPreference

定义于: node_modules/.pnpm/typeorm@0.3.30_ioredis@5.6.0_mongodb@6.19.0_mssql@11.0.1_mysql2@3.15.1_pg@8.11.3_ts-node@10.9_6zvdq3z7xgsf663jy3j6oymho4/node_modules/typeorm/driver/mongodb/typings.d.ts:4457

访问器

preference

Getter 签名

get preference(): ReadPreferenceMode

定义于: node_modules/.pnpm/typeorm@0.3.30_ioredis@5.6.0_mongodb@6.19.0_mssql@11.0.1_mysql2@3.15.1_pg@8.11.3_ts-node@10.9_6zvdq3z7xgsf663jy3j6oymho4/node_modules/typeorm/driver/mongodb/typings.d.ts:4465

返回

ReadPreferenceMode

方法

equals()

equals(readPreference): boolean

定义于: node_modules/.pnpm/typeorm@0.3.30_ioredis@5.6.0_mongodb@6.19.0_mssql@11.0.1_mysql2@3.15.1_pg@8.11.3_ts-node@10.9_6zvdq3z7xgsf663jy3j6oymho4/node_modules/typeorm/driver/mongodb/typings.d.ts:4499

Check if the two ReadPreferences are equivalent

参数

readPreference

ReadPreference

The read preference with which to check equality

返回

boolean

---

isValid()

isValid(mode?): boolean

定义于: node_modules/.pnpm/typeorm@0.3.30_ioredis@5.6.0_mongodb@6.19.0_mssql@11.0.1_mysql2@3.15.1_pg@8.11.3_ts-node@10.9_6zvdq3z7xgsf663jy3j6oymho4/node_modules/typeorm/driver/mongodb/typings.d.ts:4488

Validate if a mode is legal

参数

mode?

string

The string representing the read preference mode.

返回

boolean

---

secondaryOk()

secondaryOk(): boolean

定义于: node_modules/.pnpm/typeorm@0.3.30_ioredis@5.6.0_mongodb@6.19.0_mssql@11.0.1_mysql2@3.15.1_pg@8.11.3_ts-node@10.9_6zvdq3z7xgsf663jy3j6oymho4/node_modules/typeorm/driver/mongodb/typings.d.ts:4493

Indicates that this readPreference needs the "SecondaryOk" bit when sent over the wire

返回

boolean

参阅

https://www.mongodb.com/docs/manual/reference/mongodb-wire-protocol/#op-query

---

toJSON()

toJSON(): Document

定义于: node_modules/.pnpm/typeorm@0.3.30_ioredis@5.6.0_mongodb@6.19.0_mssql@11.0.1_mysql2@3.15.1_pg@8.11.3_ts-node@10.9_6zvdq3z7xgsf663jy3j6oymho4/node_modules/typeorm/driver/mongodb/typings.d.ts:4501

Return JSON representation

返回

Document

---

fromOptions()

static fromOptions(options?): ReadPreference | undefined

定义于: node_modules/.pnpm/typeorm@0.3.30_ioredis@5.6.0_mongodb@6.19.0_mssql@11.0.1_mysql2@3.15.1_pg@8.11.3_ts-node@10.9_6zvdq3z7xgsf663jy3j6oymho4/node_modules/typeorm/driver/mongodb/typings.d.ts:4472

Construct a ReadPreference given an options object.

参数

options?

ReadPreferenceFromOptions

The options object from which to extract the read preference.

返回

ReadPreference | undefined

---

fromString()

static fromString(mode): ReadPreference

定义于: node_modules/.pnpm/typeorm@0.3.30_ioredis@5.6.0_mongodb@6.19.0_mssql@11.0.1_mysql2@3.15.1_pg@8.11.3_ts-node@10.9_6zvdq3z7xgsf663jy3j6oymho4/node_modules/typeorm/driver/mongodb/typings.d.ts:4466

参数

mode

string

返回

ReadPreference

---

isValid()

static isValid(mode): boolean

定义于: node_modules/.pnpm/typeorm@0.3.30_ioredis@5.6.0_mongodb@6.19.0_mssql@11.0.1_mysql2@3.15.1_pg@8.11.3_ts-node@10.9_6zvdq3z7xgsf663jy3j6oymho4/node_modules/typeorm/driver/mongodb/typings.d.ts:4482

Validate if a mode is legal

参数

mode

string

The string representing the read preference mode.

返回

boolean

---

translate()

static translate(options): ReadPreferenceLikeOptions

定义于: node_modules/.pnpm/typeorm@0.3.30_ioredis@5.6.0_mongodb@6.19.0_mssql@11.0.1_mysql2@3.15.1_pg@8.11.3_ts-node@10.9_6zvdq3z7xgsf663jy3j6oymho4/node_modules/typeorm/driver/mongodb/typings.d.ts:4476

Replaces options.readPreference with a ReadPreference instance

参数

options

ReadPreferenceLikeOptions

返回

ReadPreferenceLikeOptions