Spring Data REST Driver

Targets Spring Data REST — the standard pagination and sorting convention in the Java / Spring Boot ecosystem, with HAL (Hypertext Application Language) responses.

Configure

import { DriverEnum, provideNgQubee } from 'ng-qubee';

bootstrapApplication(AppComponent, {
  providers: [provideNgQubee({ driver: DriverEnum.SPRING })]
});

Wire format

Concern	Output
Sort	sort=field,asc&sort=other,desc (repeatable param, one per rule)
Pagination	page=N&size=N — page is 0-indexed on the wire

0-indexed pages

Spring’s page request parameter counts from 0, while ng-qubee’s state (and every other driver) counts from 1. The driver converts at the boundary: setPage(1) emits page=0, and the response strategy adds 1 back when reading page.number. You always work 1-indexed — firstPage(), nextPage(), goToPage(n) behave exactly as on other drivers.

qb.setResource('users')
  .addSort('lastName', SortEnum.ASC)
  .addSort('createdAt', SortEnum.DESC)
  .setLimit(20)
  .setPage(2);

// → /users?sort=lastName,asc&sort=createdAt,desc&page=1&size=20

Feature matrix

Method	Supported?	Notes
addSort / deleteSorts	✓	Repeatable sort=field,dir params, lowercase direction
setLimit / setPage	✓	Emitted as size + 0-indexed page
addFilter / deleteFilters	✗	No standard filter convention — Spring expects custom query methods / Specifications server-side
addFilterOperator / deleteOperatorFilters	✗	Same as above
addSelect / deleteSelect	✗	No standard projection parameter (Spring’s projection is excerpt-based, not a column list)
addFields / deleteFields / deleteFieldsByModel	✗	No per-model field selection
addIncludes / deleteIncludes	✗	Associations are navigated via HAL links, not query params
addEmbedded / deleteEmbedded	✗	PostgREST-only — throws UnsupportedEmbeddedError
setSearch / deleteSearch	✗	No standard search parameter

Response shape (HAL)

{
  "_embedded": {
    "users": [
      { "id": 1, "name": "John" }
    ]
  },
  "_links": {
    "first": { "href": "http://api.example.com/users?page=0&size=20" },
    "prev": { "href": "http://api.example.com/users?page=0&size=20" },
    "next": { "href": "http://api.example.com/users?page=2&size=20" },
    "last": { "href": "http://api.example.com/users?page=4&size=20" }
  },
  "page": {
    "size": 20,
    "totalElements": 100,
    "totalPages": 5,
    "number": 1
  }
}

SpringResponseStrategy reads page.{size,totalElements,totalPages,number} (converting the 0-indexed number to a 1-indexed page), pulls navigation URLs from _links.*.href, and computes from/to from page × size.

The _embedded rel name

HAL nests the collection under the resource’s rel name — _embedded.users, _embedded.articles — which the library cannot know statically. By default the strategy looks at _embedded and picks the first array inside it, which is correct for every standard listing endpoint (Spring emits exactly one collection rel). If your payload carries multiple embedded rels, pin the exact path:

provideNgQubee({
  driver: DriverEnum.SPRING,
  response: {
    data: '_embedded.users'
  }
});

When _embedded is absent (Spring omits it on empty result sets), data resolves to an empty array.

Customising response paths

provideNgQubee({
  driver: DriverEnum.SPRING,
  response: {
    total: 'page.totalElements',
    nextPageUrl: '_links.next.href'
  }
});

Defaults are encoded in SpringResponseOptions.