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DomainService

@webda/core

Class: DomainService<T, E>

Defined in: packages/core/src/services/domainservice.service.ts:279

Domain Service expose all the models as Operations

Model are exposed if they have a Expose decorator

Children models Exposed should be under the first ModelRelated targetting them or the segment endpoint of Expose

Other relations (ModelLinks, ModelParent) should only display their information but not be exposed ModelRelated should be ignored

Webda Modda​

Extends​

Type Parameters​

T​

T extends DomainServiceParameters = DomainServiceParameters

E​

E extends DomainServiceEvents = DomainServiceEvents

Constructors​

Constructor​

new DomainService<T, E>(name, params): DomainService<T, E>

Defined in: packages/core/src/services/service.ts:191

Service

Parameters​

name​

string

The name of the service

params​

T

The parameters block define in the configuration file

Returns​

DomainService<T, E>

Inherited from​

Service.constructor

Properties​

_compiledCapabilities​

protected _compiledCapabilities: Record<string, any> = {}

Defined in: packages/core/src/services/iservice.ts:49

Capabilities detected at compile-time from @WebdaCapability-tagged interfaces.

Populated during Service.resolve by reading the service's entry in webda.module.json. Each key is a capability name (e.g., "request-filter"), and the value is an empty object {} by default. Override getCapabilities to provide capability-specific configuration or to conditionally disable capabilities.

See​

getCapabilities

Inherited from​

Service._compiledCapabilities

[WEBDA_EVENTS]​

[WEBDA_EVENTS]: E

Defined in: packages/core/src/services/service.ts:165

Set the Webda events here

Inherited from​

Service.[WEBDA_EVENTS]

app​

app: Application

Defined in: packages/core/src/services/domainservice.service.ts:283

logger​

protected logger: Logger

Defined in: packages/core/src/services/service.ts:178

Logger with class context

Inherited from​

Service.logger

metrics?​

protected optional metrics?: object

Defined in: packages/core/src/services/service.ts:182

Get metrics

Inherited from​

Service.metrics

name​

readonly name: string

Defined in: packages/core/src/services/iservice.ts:26

Inherited from​

Service.name

parameters​

readonly parameters: T

Defined in: packages/core/src/services/iservice.ts:27

Inherited from​

Service.parameters

createConfiguration?​

static optional createConfiguration?: (params) => any

Defined in: packages/core/src/services/iservice.ts:32

Create configuration set by the application on load

Parameters​

params​

any

Returns​

any

Inherited from​

Service.createConfiguration

filterConfiguration?​

static optional filterConfiguration?: (params) => any

Defined in: packages/core/src/services/iservice.ts:37

Create configuration set by the application on load

Parameters​

params​

any

Returns​

any

Inherited from​

Service.filterConfiguration

Parameters​

static Parameters: typeof ServiceParameters = ServiceParameters

Defined in: packages/core/src/services/service.ts:161

Service parameters

Inherited from​

Service.Parameters

schemas​

static schemas: object

Defined in: packages/core/src/services/domainservice.service.ts:284

searchRequest​

searchRequest: object

searchRequest.properties​

properties: object

searchRequest.properties.count​

count: object

searchRequest.properties.count.type​

type: string = "boolean"

searchRequest.properties.query​

query: object

searchRequest.properties.query.type​

type: string = "string"

searchRequest.type​

type: string = "object"

uuidRequest​

uuidRequest: object

uuidRequest.properties​

properties: object

uuidRequest.properties.uuid​

uuid: object

uuidRequest.properties.uuid.type​

type: string = "string"

uuidRequest.required​

required: string[]

uuidRequest.type​

type: string = "object"

Methods​

__clean()​

abstract __clean(): Promise<void>

Defined in: packages/core/src/services/service.ts:494

Clean the service data, can only be used in test mode

Returns​

Promise<void>

Inherited from​

Service.__clean

actionInput()​

protected actionInput(modelKey, name): any

Defined in: packages/core/src/services/domainservice.service.ts:597

The .input schema of an action, when it describes its parameters

A module built before x-webda-context expanded an OperationContext parameter into the schema: such an action is treated as taking the context only, as before.

Parameters​

modelKey​

string

model identifier

name​

string

action name

Returns​

any

the input schema, undefined when the action takes no input or has an old-style schema

actionRequestSchema()​

protected actionRequestSchema(modelKey, name, input): string

Defined in: packages/core/src/services/domainservice.service.ts:662

Register the input schema of an instance action operation: the object uuid and the action parameters

The uuid comes first in x-webda-arguments: modelAction loads the object with it and passes the rest to the action method.

Parameters​

modelKey​

string

model identifier

name​

string

action name

input​

any

the action .input schema (its parameters)

Returns​

string

the registered schema name, <modelKey>.<name>.request

Throws​

Error when an action parameter is named uuid

addBehaviorOperations()​

addBehaviorOperations(model, Metadata, name): void

Defined in: packages/core/src/services/domainservice.service.ts:925

Register one operation per declared action on every Behavior attribute of the model. Operation ids follow the <Model>.<Attribute>.<Action> shape so transports can discover them with the same lookup logic used for model-level operations.

The actual dispatch is deferred to modelBehaviorAction. This method only wires the registry entries — it does not invoke behaviors.

Parameters​

model​

ModelClass<Model>

the model class owning the behavior attribute

Metadata​

any

the model metadata blob (with Relations.behaviors)

name​

string

the model's short identifier (e.g. "User")

Returns​

void

addListener()​

addListener<Key>(eventName, listener): this

Defined in: packages/core/src/events/asynceventemitter.ts:83

Type Parameters​

Key​

Key extends string | number | symbol

Parameters​

eventName​

Key

the event name

listener​

(event) => void | Promise<void>

the event listener

Returns​

this

this for chaining

See​

EventEmitter.addListener

Inherited from​

Service.addListener

addRoute()​

protected addRoute(url, methods, executer, openapi?, override?): void

Defined in: packages/core/src/services/service.ts:386

Add a route dynamicaly

Parameters​

url​

string

of the route can contains dynamic part like {uuid}

methods​

HttpMethodType[]

the HTTP methods

executer​

Function

Method to execute for this route

openapi?​

OpenAPIWebdaDefinition = {}

the OpenAPI specification

override?​

boolean = false

whether to override existing

Returns​

void

Inherited from​

Service.addRoute

authorizeClientEvent()​

authorizeClientEvent(_event, _context): boolean

Defined in: packages/core/src/services/service.ts:339

Authorize a public event subscription

Parameters​

_event​

string

the event name

_context​

OperationContext

the execution context

Returns​

boolean

true if the condition is met

Inherited from​

Service.authorizeClientEvent

checkParent()​

protected checkParent(model, parentId, context): Promise<void>

Defined in: packages/core/src/services/domainservice.service.ts:422

checkModelParent, emitting Store.WebNotFound when the parent is missing or unreadable, like any missing object

Parameters​

model​

ModelClass<Model>

the child model class

parentId​

any

the parent primary key

context​

OperationContext

the caller context

Returns​

Promise<void>

checkPermission()​

protected checkPermission(object, context, action, model?): Promise<void>

Defined in: packages/core/src/services/domainservice.service.ts:350

checkModelPermission, emitting Store.WebNotFound when the refusal looks like a missing object, exactly like loadModel does for a missing key

Parameters​

object​

Model

the model instance

context​

OperationContext

the caller context

action​

string

the action

model?​

ModelClass<Model>

the model class (the static canAct asked)

Returns​

Promise<void>

checkReparent()​

protected checkReparent(model, object, input, context): Promise<void>

Defined in: packages/core/src/services/domainservice.service.ts:469

When an update moves an object to another parent, the caller must be able to read the new parent

Parameters​

model​

ModelClass<Model>

the model class

object​

Model

the stored object

input​

any

the sanitized input

context​

OperationContext

the caller context

Returns​

Promise<void>

computeParameters()​

computeParameters(): void

Defined in: packages/core/src/services/service.ts:200

Used to compute or derivate input parameter to attribute

Returns​

void

Deprecated​

Inherited from​

Service.computeParameters

emit()​

emit<Key>(event, data): Promise<void>

Defined in: packages/core/src/services/service.ts:475

Emit the event with data and wait for Promise to finish if listener returned a Promise

Type Parameters​

Key​

Key extends string | number | symbol

Parameters​

event​

Key

the event name

data​

E[Key]

the data to process

Returns​

Promise<void>

Inherited from​

Service.emit

getCapabilities()​

getCapabilities(): Record<string, any>

Defined in: packages/core/src/services/iservice.ts:77

Return the capabilities of this service.

By default returns capabilities detected at compile-time from

Returns​

Record<string, any>

the result

Webda Capability-tagged​

interfaces in webda.module.json.

Override to disable capabilities based on configuration:

getCapabilities() {
  const caps = super.getCapabilities();
  if (!this.parameters.enabled) delete caps["request-filter"];
  return caps;
}

Inherited from​

Service.getCapabilities

getClientEvents()​

getClientEvents(): string[]

Defined in: packages/core/src/services/service.ts:327

Return the events that an external system can subscribe to

Returns​

string[]

the list of results

Inherited from​

Service.getClientEvents

getMaxListeners()​

getMaxListeners(): number

Defined in: packages/core/src/events/asynceventemitter.ts:90

Returns​

number

Inherited from​

Service.getMaxListeners

getMetric()​

getMetric<T>(type, configuration): T

Defined in: packages/core/src/services/service.ts:309

Add service name label

Type Parameters​

T​

T = Gauge<string> | Counter<string> | Histogram<string>

Parameters​

type​

CustomConstructor<T, [MetricConfiguration<T>]>

the type to look up

configuration​

MetricConfiguration<T>

the configuration

Returns​

T

the result

Inherited from​

Service.getMetric

getModelInput()​

protected getModelInput(context): Promise<any>

Defined in: packages/core/src/services/domainservice.service.ts:382

The model input of a create, update or patch: always the full request body

The CRUD methods take no argument: resolveArguments spreads the model schema's properties into positional args, so the first one is only the value of the first property, which may itself be an object or an array (#911).

An empty body (undefined) is accepted as "no fields"; any other body that is not a plain object (array, string, number, boolean or null) is refused.

Parameters​

context​

OperationContext

the operation context

Returns​

Promise<any>

the request body

Throws​

BadRequest when the body is not an object

getName()​

getName(): string

Defined in: packages/core/src/services/service.ts:485

Get service name

Returns​

string

the result string

Inherited from​

Service.getName

getOpenApiReplacements()​

getOpenApiReplacements(): any

Defined in: packages/core/src/services/service.ts:415

Return variables for replacement in openapi

Returns​

any

the result

Inherited from​

Service.getOpenApiReplacements

getOperationId()​

getOperationId(id): string

Defined in: packages/core/src/services/service.ts:373

If undefined is returned it cancel the operation registration

Parameters​

id​

string

the identifier

Returns​

string

the result

Inherited from​

Service.getOperationId

getParameters()​

getParameters(): T

Defined in: packages/core/src/services/service.ts:208

Get the service parameters

Returns​

T

the result

Inherited from​

Service.getParameters

getService()​

getService<T>(name): ServicesMap[T]

Defined in: packages/core/src/services/service.ts:299

Get a service by name

Type Parameters​

T​

T extends keyof ServicesMap

Parameters​

name​

T

the name to use

Returns​

ServicesMap[T]

the result map

Deprecated​

Use useService, might reconsider

Inherited from​

Service.getService

getState()​

getState(): ServiceStates

Defined in: packages/core/src/services/service.ts:171

Get the current state

Returns​

ServiceStates

the result

Inherited from​

Service.getState

getUrl()​

getUrl(url, _methods): string

Defined in: packages/core/src/services/service.ts:350

Return the full path url based on parameters

Parameters​

url​

string

relative url to service

_methods​

HttpMethodType[]

in case we need filtering (like Store)

Returns​

string

absolute url or undefined if need to skip the Route

Inherited from​

Service.getUrl

hasActionInput()​

protected hasActionInput(model, action): boolean

Defined in: packages/core/src/services/domainservice.service.ts:584

Whether an action has an input schema, so it receives its parameters rather than the context

Parameters​

model​

ModelClass<Model>

the model class

action​

the action

name​

string

the action name

Returns​

boolean

true when <model>.<action>.input exists

init()​

abstract init(): Promise<DomainService<T, E>>

Defined in: packages/core/src/services/service.ts:465

Will be called after all the Services are created

Returns​

Promise<DomainService<T, E>>

Inherited from​

Service.init

initMetrics()​

initMetrics(): void

Defined in: packages/core/src/services/service.ts:289

Init the metrics

Returns​

void

Inherited from​

Service.initMetrics

initOperations()​

initOperations(): void

Defined in: packages/core/src/services/domainservice.service.ts:700

Add operations for all exposed models

Returns​

void

the result

Overrides​

Service.initOperations

isExposable()​

isExposable(model, identifier): boolean

Defined in: packages/core/src/services/domainservice.service.ts:692

Whether a model may be exposed: models of INTERNAL_MODELS and their subclasses need an explicit listing in the models parameter

Parameters​

model​

any

model class

identifier​

string

model identifier

Returns​

boolean

true when the model may be exposed

listeners()​

listeners(eventName): Function[]

Defined in: packages/core/src/events/asynceventemitter.ts:183

Get all listeners for an event

Parameters​

eventName​

keyof E

the event name

Returns​

Function[]

the list of results

Inherited from​

Service.listeners

loadCapabilities()​

protected loadCapabilities(): void

Defined in: packages/core/src/services/service.ts:269

Load capabilities from webda.module.json metadata into _compiledCapabilities.

Called during resolve after dependency injection. Reads the service's type name from parameters, looks it up in the application's module metadata (moddas or beans section), and populates _compiledCapabilities with an empty object for each declared capability name.

Fails silently if the application is not available (e.g., in unit tests where services are instantiated without a full application context).

Returns​

void

Example​

// If webda.module.json contains:
// { "moddas": { "MyApp/HawkService": { "capabilities": ["request-filter", "cors-filter"] } } }
// Then after resolve(), this.getCapabilities() returns:
// { "request-filter": {}, "cors-filter": {} }

See​

getCapabilities

Inherited from​

Service.loadCapabilities

log()​

log(level, ...args): void

Defined in: packages/core/src/services/service.ts:515

Parameters​

level​

WorkerLogLevel

to log

args​

...any[]

additional arguments

Returns​

void

Inherited from​

Service.log

modelAction()​

modelAction(...args): Promise<any>

Defined in: packages/core/src/services/domainservice.service.ts:621

Action on a model

An instance action receives uuid first (to load the object) then its parameters; a static action its parameters. Actions without an input schema receive the context.

Parameters​

args​

...any[]

arguments forwarded to the action method

Returns​

Promise<any>

the action result

modelBehaviorAction()​

modelBehaviorAction(...args): Promise<any>

Defined in: packages/core/src/services/domainservice.service.ts:998

Dispatcher for a behavior-attribute action registered by addBehaviorOperations. Mirrors the shape of modelAction:

  1. read the parent model class + attribute/action names off operationContext (set up by callOperation),
  2. take args[0] as the parent UUID (Behavior actions are always instance-scoped per the spec),
  3. load the parent via model.ref(uuid).get() — NotFound if missing or soft-deleted,
  4. ask the model whether the action is allowed via canAct(ctx, "<attribute>.<action>") — anything but true (or the instance itself, the convention some models use to say "yes, on this object") is treated as a denial,
  5. read instance[attribute] — already a hydrated Behavior instance thanks to CoreModel.deserialize (Task 7),
  6. call behaviorInstance[action](...args.slice(1)) and let callOperation write the result onto the context.

Parameters​

args​

...any[]

resolved arguments from resolveArguments; the first is always the parent UUID, the rest come from the request body / query params depending on the registered input schema.

Returns​

Promise<any>

the Behavior method's return value (callOperation writes it to the context output if non-undefined).

modelCreate()​

modelCreate(): Promise<Model>

Defined in: packages/core/src/services/domainservice.service.ts:396

Create a model operation implementation

The model data is the request body (getModelInput)

Returns​

Promise<Model>

the created model instance

modelDelete()​

modelDelete(uuid): Promise<void>

Defined in: packages/core/src/services/domainservice.service.ts:520

Delete a model operation implementation

Parameters​

uuid​

string

the model primary key

Returns​

Promise<void>

modelGet()​

modelGet(uuid): Promise<Model>

Defined in: packages/core/src/services/domainservice.service.ts:508

Get a model operation implementation

Parameters​

uuid​

string

the model primary key

Returns​

Promise<Model>

the model instance

modelPatch()​

modelPatch(): Promise<Model>

Defined in: packages/core/src/services/domainservice.service.ts:560

Patch a model

The partial update data is the request body (getModelInput)

Returns​

Promise<Model>

the patched model instance

modelQuery()​

modelQuery(query, count?): Promise<any>

Defined in: packages/core/src/services/domainservice.service.ts:535

Query models

Parameters​

query​

string

the query string

count?​

boolean

also return the total of the query (total), when the model allows it

Returns​

Promise<any>

the query results

modelUpdate()​

modelUpdate(): Promise<Model>

Defined in: packages/core/src/services/domainservice.service.ts:484

Update a model operation implementation

The update data is the request body (getModelInput)

Returns​

Promise<Model>

the updated model instance

off()​

off<Key>(eventName, listener): this

Defined in: packages/core/src/events/asynceventemitter.ts:141

Type Parameters​

Key​

Key extends string | number | symbol

Parameters​

eventName​

Key

the event name

listener​

(event) => void

the event listener

Returns​

this

this for chaining

See​

EventEmitter.off

Inherited from​

Service.off

on()​

on<Key>(eventName, listener): this

Defined in: packages/core/src/events/asynceventemitter.ts:119

Type Parameters​

Key​

Key extends string | number | symbol

Parameters​

eventName​

Key

the event name

listener​

(event) => void

the event listener

Returns​

this

this for chaining

See​

EventEmitter.once

Inherited from​

Service.on

once()​

once<Key>(eventName, listener): this

Defined in: packages/core/src/events/asynceventemitter.ts:108

Type Parameters​

Key​

Key extends string | number | symbol

Parameters​

eventName​

Key

the event name

listener​

(event) => void

the event listener

Returns​

this

this for chaining

See​

EventEmitter.once

Inherited from​

Service.once

removeAllListeners()​

removeAllListeners<Key>(eventName?): this

Defined in: packages/core/src/events/asynceventemitter.ts:150

Type Parameters​

Key​

Key extends string | number | symbol

Parameters​

eventName?​

Key

the event name

Returns​

this

this for chaining

See​

EventEmitter.removeAllListeners

Inherited from​

Service.removeAllListeners

removeListener()​

removeListener<Key>(eventName, listener): this

Defined in: packages/core/src/events/asynceventemitter.ts:130

Type Parameters​

Key​

Key extends string | number | symbol

Parameters​

eventName​

Key

the event name

listener​

(event) => void

the event listener

Returns​

this

this for chaining

See​

EventEmitter.removeListener

Inherited from​

Service.removeListener

resolve()​

resolve(): this

Defined in: packages/core/src/services/service.ts:235

Resolve parameters and load metadata. @Route-declared routes are scanned and registered by Router.discoverRoutes(services) from Core.init() once every service has resolved — nothing to do per-service here.

Returns​

this

the result

Inherited from​

Service.resolve

resolveUpdateKey()​

protected resolveUpdateKey(input, pkFields, params): any

Defined in: packages/core/src/services/domainservice.service.ts:445

Resolve the primary key of an update or patch: the URL parameters win over the body, and a body carrying another key is refused, so an update can never be redirected to another object

Parameters​

input​

any

the sanitized input, its primary-key fields are removed

pkFields​

string[]

the primary-key fields

params​

Record<string, any>

the URL parameters

Returns​

any

the primary key

Throws​

BadRequest when the body key differs from the URL key

setMaxListeners()​

setMaxListeners(n): this

Defined in: packages/core/src/events/asynceventemitter.ts:97

Parameters​

n​

number

Returns​

this

Inherited from​

Service.setMaxListeners

stop()​

stop(): Promise<void>

Defined in: packages/core/src/services/service.ts:216

Shutdown the current service if action need to be taken

Returns​

Promise<void>

Inherited from​

Service.stop

toJSON()​

toJSON(): string

Defined in: packages/core/src/services/service.ts:454

Prevent service to be serialized

Returns​

string

the result

Inherited from​

Service.toJSON

toString()​

toString(): string

Defined in: packages/core/src/services/service.ts:224

Return service representation

Returns​

string

the result

Inherited from​

Service.toString

transformName()​

transformName(name): string

Defined in: packages/core/src/services/domainservice.service.ts:314

Return the model name for this service

Parameters​

name​

string

the name to use

Returns​

string

the result string

See​

https://blog.boot.dev/clean-code/casings-in-coding/#:~:text=%F0%9F%94%97%20Camel%20Case,Go