@sourceloop/core / Exports / HasOneRestResolver

Class: HasOneRestResolver<Source, Target>

Type parameters

Name	Type
Source	extends Entity
Target	extends Entity

Implements

• IRestResolver<Source, Target>

Table of contents

Constructors

• constructor

Properties

• context
• type

Methods

• addConditionToScope
• findRelatedData
• getKeyFrom
• getService
• link
• resolve
• toPascalCase

Constructors

constructor

• new HasOneRestResolver<Source, Target>(context)

Type parameters

Name	Type
Source	extends Entity<Source>
Target	extends Entity<Target>

Parameters

Name	Type
context	Context

Defined in

packages/core/src/components/proxy-builder/services/rest-resolvers/has-one-resolver.service.ts:29

Properties

context

• Private context: Context

Defined in

packages/core/src/components/proxy-builder/services/rest-resolvers/has-one-resolver.service.ts:31

---

type

• type: RelationType = RelationType.hasOne

Implementation of

IRestResolver.type

Defined in

packages/core/src/components/proxy-builder/services/rest-resolvers/has-one-resolver.service.ts:28

Methods

addConditionToScope

▸ Private addConditionToScope(keyTo, ids, scope?): Promise<{ where: Where<AnyObject> }>

Parameters

Name	Type
keyTo	keyof Target
ids	Source[keyof Source][]
scope?	Filter<Target>

Returns

Promise<{ where: Where<AnyObject> }>

Defined in

packages/core/src/components/proxy-builder/services/rest-resolvers/has-one-resolver.service.ts:98

---

findRelatedData

▸ Private findRelatedData(service, filter, token?, config?): Promise<Target[]>

Parameters

Name	Type
service	ModifiedRestService<Target>
filter	Filter<Target>
token?	string
config?	RestRelationConfig

Returns

Promise<Target[]>

Defined in

packages/core/src/components/proxy-builder/services/rest-resolvers/has-one-resolver.service.ts:116

---

getKeyFrom

▸ Private getKeyFrom(relationMetadata): keyof Source

Parameters

Name	Type
relationMetadata	HasOneDefinition

Returns

keyof Source

Defined in

packages/core/src/components/proxy-builder/services/rest-resolvers/has-one-resolver.service.ts:125

---

getService

▸ Private getService(config): Promise<ModifiedRestService<Target>>

Parameters

Name	Type
config	RestRelationConfig

Returns

Promise<ModifiedRestService<Target>>

Defined in

packages/core/src/components/proxy-builder/services/rest-resolvers/has-one-resolver.service.ts:142

---

link

▸ link(-): Promise<Source>

It takes a parent object, looks up the foreign key on the parent, and then uses that foreign key to look up and link the related object in the resolvedDataMap

Parameters

Name	Type	Description
-	RestLinkerParams<Source, Target> & { relationMetadata: HasOneDefinition }	relationMetadata is the metadata for the relation being linked.

Returns

Promise<Source>

The parent object with the relationName property set to the resolvedDataMap.get(parent[keyFrom])

Implementation of

IRestResolver.link

Defined in

packages/core/src/components/proxy-builder/services/rest-resolvers/has-one-resolver.service.ts:83

---

resolve

▸ resolve(-): Promise<Map<Target[keyof Target] | Source[keyof Source], Target>>

It takes the results of the query, finds the foreign key in each result, and then uses that key to find the related record in the related service

Parameters

Name	Type	Description
-	RestResolverParams<Source, Target> & { relationMetadata: HasOneDefinition }	relationConfig is the configuration object for the relation.

Returns

Promise<Map<Target[keyof Target] | Source[keyof Source], Target>>

A map of related records.

Implementation of

IRestResolver.resolve

Defined in

packages/core/src/components/proxy-builder/services/rest-resolvers/has-one-resolver.service.ts:39

---

toPascalCase

▸ Private toPascalCase(str): string

Parameters

Name	Type
str	string

Returns

string

Defined in

packages/core/src/components/proxy-builder/services/rest-resolvers/has-one-resolver.service.ts:134