RxDBQueryCacheCapabilityError

Defined in: packages/rxdb/src/RxDBError.ts:71

QueryCache 必需能力缺失 —— 适配器没有提供 QueryCache 同步流程所需的 duck。

Remarks

继承 RxDBAdapterLocalBase / RxDBAdapterRemoteBase 的适配器由 abstract 成员在编译期 保证这些 duck 存在，永远走不到这条错误；它只服务于不继承 base 的自定义适配器对象。

之所以抛而不是降级：QueryCacheEngine 此前缺 duck 时返回空数组， 调用方看到的是「远端没有数据」而不是「本地读不出来」—— 缓存故障被伪装成业务结果。

Example

try {
  await firstValueFrom(rxdb.getRepository(Product).find({ where }));
} catch (error) {
  if (error instanceof RxDBQueryCacheCapabilityError) {
    console.error(`${error.side} adapter is missing: ${error.missing.join(', ')}`);
  }
}

Extends

• RxDBError

Constructors

Constructor

new RxDBQueryCacheCapabilityError(
   entity, 
   side, 
   missing
): RxDBQueryCacheCapabilityError;

Defined in: packages/rxdb/src/RxDBError.ts:72

Parameters

Parameter	Type	Description
entity	string	实体名（元数据里的 name）
side	"local" | "remote"	缺能力的是哪一侧适配器
missing	readonly string[]	缺失的 duck 名，按声明顺序

Returns

RxDBQueryCacheCapabilityError

Overrides

RxDBError.constructor

Properties

cause?

optional cause?: unknown;

Defined in: node_modules/.pnpm/typescript@6.0.3_patch_hash=ef3c2292deb88eb14130359d5acc1febc0226af46b7b945db6c7250c6cb4efbb/node_modules/typescript/lib/lib.es2022.error.d.ts:24

Inherited from

RxDBError.cause

---

entity

readonly entity: string;

Defined in: packages/rxdb/src/RxDBError.ts:74

实体名（元数据里的 name）

---

message

message: string;

Defined in: node_modules/.pnpm/typescript@6.0.3_patch_hash=ef3c2292deb88eb14130359d5acc1febc0226af46b7b945db6c7250c6cb4efbb/node_modules/typescript/lib/lib.es5.d.ts:1075

Inherited from

RxDBError.message

---

missing

readonly missing: readonly string[];

Defined in: packages/rxdb/src/RxDBError.ts:78

缺失的 duck 名，按声明顺序

---

name

name: string;

Defined in: node_modules/.pnpm/typescript@6.0.3_patch_hash=ef3c2292deb88eb14130359d5acc1febc0226af46b7b945db6c7250c6cb4efbb/node_modules/typescript/lib/lib.es5.d.ts:1074

Inherited from

RxDBError.name

---

side

readonly side: "local" | "remote";

Defined in: packages/rxdb/src/RxDBError.ts:76

缺能力的是哪一侧适配器

---

stack?

optional stack?: string;

Defined in: node_modules/.pnpm/typescript@6.0.3_patch_hash=ef3c2292deb88eb14130359d5acc1febc0226af46b7b945db6c7250c6cb4efbb/node_modules/typescript/lib/lib.es5.d.ts:1076

Inherited from

RxDBError.stack

---

stackTraceLimit

static stackTraceLimit: number;

Defined in: node_modules/.pnpm/@types+node@26.6.3/node_modules/@types/node/globals.d.ts:67

The Error.stackTraceLimit property specifies the number of stack frames collected by a stack trace (whether generated by new Error().stack or Error.captureStackTrace(obj)).

The default value is 10 but may be set to any valid JavaScript number. Changes will affect any stack trace captured after the value has been changed.

If set to a non-number value, or set to a negative number, stack traces will not capture any frames.

Inherited from

RxDBError.stackTraceLimit

Methods

captureStackTrace()

static captureStackTrace(targetObject, constructorOpt?): void;

Defined in: node_modules/.pnpm/@types+node@26.6.3/node_modules/@types/node/globals.d.ts:51

Creates a .stack property on targetObject, which when accessed returns a string representing the location in the code at which Error.captureStackTrace() was called.

const myObject = {};
Error.captureStackTrace(myObject);
myObject.stack;  // Similar to `new Error().stack`

The first line of the trace will be prefixed with ${myObject.name}: ${myObject.message}.

The optional constructorOpt argument accepts a function. If given, all frames above constructorOpt, including constructorOpt, will be omitted from the generated stack trace.

The constructorOpt argument is useful for hiding implementation details of error generation from the user. For instance:

function a() {
  b();
}

function b() {
  c();
}

function c() {
  // Create an error without stack trace to avoid calculating the stack trace twice.
  const { stackTraceLimit } = Error;
  Error.stackTraceLimit = 0;
  const error = new Error();
  Error.stackTraceLimit = stackTraceLimit;

  // Capture the stack trace above function b
  Error.captureStackTrace(error, b); // Neither function c, nor b is included in the stack trace
  throw error;
}

a();

Parameters

Parameter	Type
targetObject	object
constructorOpt?	Function

Returns

void

Inherited from

RxDBError.captureStackTrace

---

prepareStackTrace()

static prepareStackTrace(err, stackTraces): any;

Defined in: node_modules/.pnpm/@types+node@26.6.3/node_modules/@types/node/globals.d.ts:55

Parameters

Parameter	Type
err	Error
stackTraces	CallSite[]

Returns

any

See

https://v8.dev/docs/stack-trace-api#customizing-stack-traces

Inherited from

RxDBError.prepareStackTrace