JsonServerRequestStrategy

Defined in: src/lib/strategies/json-server-request.strategy.ts:38

Request strategy for the json-server driver

Generates URIs in json-server’s query format — the de-facto standard mock REST API for prototyping:

• Filters: field=value (exact, no operator); multi-value folds to the in list (field:in=v1,v2)
• Operator filters: colon syntax field:op=value — see the mapping on _formatOperatorSegments
• Sorts: _sort=-views,title (CSV, - prefix = DESC)
• Search: q=term (full-text search)
• Pagination: _page=N&_per_page=M

The underscore-prefixed system params (_page, _per_page, _sort) and the q search key are fixed by the server and intentionally not configurable through QueryBuilderOptions; they live as private statics so they are visible in one place.

json-server has no per-model field selection, no relation includes, no column projection — the corresponding fluent methods throw the matching Unsupported*Error. ILIKE (no case-insensitive variant), NULL (no null check), and the PostgREST-native full-text operators (FTS, PHFTS, PLFTS, WFTS) throw UnsupportedFilterOperatorError.

See

https://github.com/typicode/json-server

Extends

• AbstractRequestStrategy

Constructors

Constructor

new JsonServerRequestStrategy(): JsonServerRequestStrategy

Returns

JsonServerRequestStrategy

Inherited from

AbstractRequestStrategy.constructor

Properties

capabilities

readonly capabilities: IStrategyCapabilities

Defined in: src/lib/strategies/json-server-request.strategy.ts:44

Filters, operator filters, sorts, global search — no per-model fields, no includes, no flat select, no embedded resources

Overrides

AbstractRequestStrategy.capabilities

Methods

assertResource()

protected assertResource(state): void

Defined in: src/lib/strategies/abstract-request.strategy.ts:89

Throw if the resource is not set on the state

Centralises the message that was previously copy-pasted across four of the five concrete strategies.

Parameters

state

IQueryBuilderState

The current query builder state

Returns

void

Throws

Error if state.resource is empty

Inherited from

AbstractRequestStrategy.assertResource

---

baseUri()

protected baseUri(state): string

Defined in: src/lib/strategies/abstract-request.strategy.ts:101

Compute the base path (no query string)

Parameters

state

IQueryBuilderState

The current query builder state

Returns

string

The base URI without the query separator (e.g. /users or https://api.example.com/users)

Inherited from

AbstractRequestStrategy.baseUri

---

buildUri()

buildUri(state, options): string

Defined in: src/lib/strategies/abstract-request.strategy.ts:42

Compose the full request URI from the given state

Template method: validates the resource, computes the base path, delegates the per-driver query-string segments to parts(...), and joins them with the conventional ?/& separators.

Parameters

state

IQueryBuilderState

The current query builder state

options

QueryBuilderOptions

The query parameter key name configuration

Returns

string

The composed URI string

Throws

Error if the resource is not set

Inherited from

AbstractRequestStrategy.buildUri

---

join()

protected join(base, segments): string

Defined in: src/lib/strategies/abstract-request.strategy.ts:115

Glue the base URI and the per-driver query-string segments

Returns the bare base when no segments were emitted (e.g. PostgREST in RANGE mode with no filters), otherwise joins with ? + &.

Parameters

base

string

The base URI from _baseUri

segments

string[]

The query-string fragments from parts(...)

Returns

string

The full URI

Inherited from

AbstractRequestStrategy.join

---

parts()

protected parts(state, _options): string[]

Defined in: src/lib/strategies/json-server-request.strategy.ts:76

Emit json-server-format query-string segments in canonical order: filters → operator filters → _sort → q → _page → _per_page

Parameters

state

IQueryBuilderState

The current query builder state

_options

QueryBuilderOptions

The query parameter key name configuration (unused; json-server’s system keys are fixed by the server)

Returns

string[]

Ordered query-string fragments

Overrides

AbstractRequestStrategy.parts

---

validateLimit()

validateLimit(limit): void

Defined in: src/lib/strategies/abstract-request.strategy.ts:59

Validate that a limit value is acceptable for this driver

Default policy: positive integer. Drivers that recognise a sentinel (NestJS treats -1 as “fetch all”) override this method.

Parameters

limit

number

The limit value to validate

Returns

void

Throws

If the value is not a positive integer

Inherited from

AbstractRequestStrategy.validateLimit