import {Component, utils} from 'js-data'
export const noop = function (...args) {
const opts = args[args.length - 1]
this.dbg(opts.op, ...args)
return utils.resolve()
}
export const noop2 = function (...args) {
const opts = args[args.length - 2]
this.dbg(opts.op, ...args)
return utils.resolve()
}
export const unique = function (array) {
const seen = {}
const final = []
array.forEach(function (item) {
if (item in seen) {
return
}
final.push(item)
seen[item] = 0
})
return final
}
export const withoutRelations = function (mapper, props, opts) {
opts || (opts = {})
opts.with || (opts.with = [])
const relationFields = mapper.relationFields || []
const toStrip = relationFields.filter((value) => opts.with.indexOf(value) === -1)
return utils.omit(props, toStrip)
}
export const reserved = [
'orderBy',
'sort',
'limit',
'offset',
'skip',
'where'
]
/**
* Response object used when `raw` is `true`. May contain other fields in
* addition to `data`.
*
* @class Response
*/
export function Response (data, meta, op) {
meta || (meta = {})
/**
* Response data.
*
* @name Response#data
* @type {*}
*/
this.data = data
utils.fillIn(this, meta)
/**
* The operation for which the response was created.
*
* @name Response#op
* @type {string}
*/
this.op = op
}
const DEFAULTS = {
/**
* Whether to log debugging information.
*
* @name Adapter#debug
* @type {boolean}
* @default false
*/
debug: false,
/**
* Whether to return a more detailed response object.
*
* @name Adapter#raw
* @type {boolean}
* @default false
*/
raw: false
}
/**
* Abstract class meant to be extended by adapters.
*
* @class Adapter
* @abstract
* @extends Component
* @param {Object} [opts] Configuration opts.
* @param {boolean} [opts.debug=false] Whether to log debugging information.
* @param {boolean} [opts.raw=false] Whether to return a more detailed response
* object.
*/
export function Adapter (opts) {
utils.classCallCheck(this, Adapter)
Component.call(this)
opts || (opts = {})
utils.fillIn(opts, DEFAULTS)
utils.fillIn(this, opts)
}
Component.extend({
constructor: Adapter,
/**
* Lifecycle method method called by <a href="#count__anchor">count</a>.
*
* Override this method to add custom behavior for this lifecycle hook.
*
* Returning a Promise causes <a href="#count__anchor">count</a> to wait for the Promise to resolve before continuing.
*
* If `opts.raw` is `true` then `response` will be a detailed response object, otherwise `response` will be the count.
*
* `response` may be modified. You can also re-assign `response` to another value by returning a different value or a Promise that resolves to a different value.
*
* A thrown error or rejected Promise will bubble up and reject the Promise returned by <a href="#count__anchor">count</a>.
*
* @name Adapter#afterCount
* @method
* @param {Object} mapper The `mapper` argument passed to <a href="#count__anchor">count</a>.
* @param {Object} props The `props` argument passed to <a href="#count__anchor">count</a>.
* @param {Object} opts The `opts` argument passed to <a href="#count__anchor">count</a>.
* @property {string} opts.op `afterCount`
* @param {Object|Response} response Count or {@link Response}, depending on the value of `opts.raw`.
*/
afterCount: noop2,
/**
* Lifecycle method method called by <a href="#create__anchor">create</a>.
*
* Override this method to add custom behavior for this lifecycle hook.
*
* Returning a Promise causes <a href="#create__anchor">create</a> to wait for the Promise to resolve before continuing.
*
* If `opts.raw` is `true` then `response` will be a detailed response object, otherwise `response` will be the created record.
*
* `response` may be modified. You can also re-assign `response` to another value by returning a different value or a Promise that resolves to a different value.
*
* A thrown error or rejected Promise will bubble up and reject the Promise returned by <a href="#create__anchor">create</a>.
*
* @name Adapter#afterCreate
* @method
* @param {Object} mapper The `mapper` argument passed to <a href="#create__anchor">create</a>.
* @param {Object} props The `props` argument passed to <a href="#create__anchor">create</a>.
* @param {Object} opts The `opts` argument passed to <a href="#create__anchor">create</a>.
* @property {string} opts.op `afterCreate`
* @param {Object|Response} response Created record or {@link Response}, depending on the value of `opts.raw`.
*/
afterCreate: noop2,
/**
* Lifecycle method method called by <a href="#createMany__anchor">createMany</a>.
*
* Override this method to add custom behavior for this lifecycle hook.
*
* Returning a Promise causes <a href="#createMany__anchor">createMany</a> to wait for the Promise to resolve before continuing.
*
* If `opts.raw` is `true` then `response` will be a detailed response object, otherwise `response` will be the created records.
*
* `response` may be modified. You can also re-assign `response` to another value by returning a different value or a Promise that resolves to a different value.
*
* A thrown error or rejected Promise will bubble up and reject the Promise returned by <a href="#createMany__anchor">createMany</a>.
*
* @name Adapter#afterCreate
* @method
* @param {Object} mapper The `mapper` argument passed to <a href="#createMany__anchor">createMany</a>.
* @param {Object[]} props The `props` argument passed to <a href="#createMany__anchor">createMany</a>.
* @param {Object} opts The `opts` argument passed to <a href="#createMany__anchor">createMany</a>.
* @property {string} opts.op `afterCreateMany`
* @param {Object[]|Response} response Created records or {@link Response}, depending on the value of `opts.raw`.
*/
afterCreateMany: noop2,
/**
* Lifecycle method method called by <a href="#destroy__anchor">destroy</a>.
*
* Override this method to add custom behavior for this lifecycle hook.
*
* Returning a Promise causes <a href="#destroy__anchor">destroy</a> to wait for the Promise to resolve before continuing.
*
* If `opts.raw` is `true` then `response` will be a detailed response object, otherwise `response` will be `undefined`.
*
* `response` may be modified. You can also re-assign `response` to another value by returning a different value or a Promise that resolves to a different value.
*
* A thrown error or rejected Promise will bubble up and reject the Promise returned by <a href="#destroy__anchor">destroy</a>.
*
* @name Adapter#afterDestroy
* @method
* @param {Object} mapper The `mapper` argument passed to <a href="#destroy__anchor">destroy</a>.
* @param {(string|number)} id The `id` argument passed to <a href="#destroy__anchor">destroy</a>.
* @param {Object} opts The `opts` argument passed to <a href="#destroy__anchor">destroy</a>.
* @property {string} opts.op `afterDestroy`
* @param {undefined|Response} response `undefined` or {@link Response}, depending on the value of `opts.raw`.
*/
afterDestroy: noop2,
/**
* Lifecycle method method called by <a href="#destroyAll__anchor">destroyAll</a>.
*
* Override this method to add custom behavior for this lifecycle hook.
*
* Returning a Promise causes <a href="#destroyAll__anchor">destroyAll</a> to wait for the Promise to resolve before continuing.
*
* If `opts.raw` is `true` then `response` will be a detailed response object, otherwise `response` will be `undefined`.
*
* `response` may be modified. You can also re-assign `response` to another value by returning a different value or a Promise that resolves to a different value.
*
* A thrown error or rejected Promise will bubble up and reject the Promise returned by <a href="#destroyAll__anchor">destroyAll</a>.
*
* @name Adapter#afterDestroyAll
* @method
* @param {Object} mapper The `mapper` argument passed to <a href="#destroyAll__anchor">destroyAll</a>.
* @param {Object} query The `query` argument passed to <a href="#destroyAll__anchor">destroyAll</a>.
* @param {Object} opts The `opts` argument passed to <a href="#destroyAll__anchor">destroyAll</a>.
* @property {string} opts.op `afterDestroyAll`
* @param {undefined|Response} response `undefined` or {@link Response}, depending on the value of `opts.raw`.
*/
afterDestroyAll: noop2,
/**
* Lifecycle method method called by <a href="#find__anchor">find</a>.
*
* Override this method to add custom behavior for this lifecycle hook.
*
* Returning a Promise causes <a href="#find__anchor">find</a> to wait for the Promise to resolve before continuing.
*
* If `opts.raw` is `true` then `response` will be a detailed response object, otherwise `response` will be the found record, if any.
*
* `response` may be modified. You can also re-assign `response` to another value by returning a different value or a Promise that resolves to a different value.
*
* A thrown error or rejected Promise will bubble up and reject the Promise returned by <a href="#find__anchor">find</a>.
*
* @name Adapter#afterFind
* @method
* @param {Object} mapper The `mapper` argument passed to <a href="#find__anchor">find</a>.
* @param {(string|number)} id The `id` argument passed to <a href="#find__anchor">find</a>.
* @param {Object} opts The `opts` argument passed to <a href="#find__anchor">find</a>.
* @property {string} opts.op `afterFind`
* @param {Object|Response} response The found record or {@link Response}, depending on the value of `opts.raw`.
*/
afterFind: noop2,
/**
* Lifecycle method method called by <a href="#findAll__anchor">findAll</a>.
*
* Override this method to add custom behavior for this lifecycle hook.
*
* Returning a Promise causes <a href="#findAll__anchor">findAll</a> to wait for the Promise to resolve before continuing.
*
* If `opts.raw` is `true` then `response` will be a detailed response object, otherwise `response` will be the found records, if any.
*
* `response` may be modified. You can also re-assign `response` to another value by returning a different value or a Promise that resolves to a different value.
*
* A thrown error or rejected Promise will bubble up and reject the Promise returned by <a href="#findAll__anchor">findAll</a>.
*
* @name Adapter#afterFindAll
* @method
* @param {Object} mapper The `mapper` argument passed to <a href="#findAll__anchor">findAll</a>.
* @param {Object} query The `query` argument passed to <a href="#findAll__anchor">findAll</a>.
* @param {Object} opts The `opts` argument passed to <a href="#findAll__anchor">findAll</a>.
* @property {string} opts.op `afterFindAll`
* @param {Object[]|Response} response The found records or {@link Response}, depending on the value of `opts.raw`.
*/
afterFindAll: noop2,
/**
* Lifecycle method method called by <a href="#sum__anchor">sum</a>.
*
* Override this method to add custom behavior for this lifecycle hook.
*
* Returning a Promise causes <a href="#sum__anchor">sum</a> to wait for the Promise to resolve before continuing.
*
* If `opts.raw` is `true` then `response` will be a detailed response object, otherwise `response` will be the sum.
*
* `response` may be modified. You can also re-assign `response` to another value by returning a different value or a Promise that resolves to a different value.
*
* A thrown error or rejected Promise will bubble up and reject the Promise returned by <a href="#sum__anchor">sum</a>.
*
* @name Adapter#afterSum
* @method
* @param {Object} mapper The `mapper` argument passed to <a href="#sum__anchor">sum</a>.
* @param {string} field The `field` argument passed to <a href="#sum__anchor">sum</a>.
* @param {Object} query The `query` argument passed to <a href="#sum__anchor">sum</a>.
* @param {Object} opts The `opts` argument passed to <a href="#sum__anchor">sum</a>.
* @property {string} opts.op `afterSum`
* @param {Object|Response} response Count or {@link Response}, depending on the value of `opts.raw`.
*/
afterSum: noop2,
/**
* Lifecycle method method called by <a href="#update__anchor">update</a>.
*
* Override this method to add custom behavior for this lifecycle hook.
*
* Returning a Promise causes <a href="#update__anchor">update</a> to wait for the Promise to resolve before continuing.
*
* If `opts.raw` is `true` then `response` will be a detailed response object, otherwise `response` will be the updated record.
*
* `response` may be modified. You can also re-assign `response` to another value by returning a different value or a Promise that resolves to a different value.
*
* A thrown error or rejected Promise will bubble up and reject the Promise returned by <a href="#update__anchor">update</a>.
*
* @name Adapter#afterUpdate
* @method
* @param {Object} mapper The `mapper` argument passed to <a href="#update__anchor">update</a>.
* @param {(string|number)} id The `id` argument passed to <a href="#update__anchor">update</a>.
* @param {Object} props The `props` argument passed to <a href="#update__anchor">update</a>.
* @param {Object} opts The `opts` argument passed to <a href="#update__anchor">update</a>.
* @property {string} opts.op `afterUpdate`
* @param {Object|Response} response The updated record or {@link Response}, depending on the value of `opts.raw`.
*/
afterUpdate: noop2,
/**
* Lifecycle method method called by <a href="#updateAll__anchor">updateAll</a>.
*
* Override this method to add custom behavior for this lifecycle hook.
*
* Returning a Promise causes <a href="#updateAll__anchor">updateAll</a> to wait for the Promise to resolve before continuing.
*
* If `opts.raw` is `true` then `response` will be a detailed response object, otherwise `response` will be the updated records, if any.
*
* `response` may be modified. You can also re-assign `response` to another value by returning a different value or a Promise that resolves to a different value.
*
* A thrown error or rejected Promise will bubble up and reject the Promise returned by <a href="#updateAll__anchor">updateAll</a>.
*
* @name Adapter#afterUpdateAll
* @method
* @param {Object} mapper The `mapper` argument passed to <a href="#updateAll__anchor">updateAll</a>.
* @param {Object} props The `props` argument passed to <a href="#updateAll__anchor">updateAll</a>.
* @param {Object} query The `query` argument passed to <a href="#updateAll__anchor">updateAll</a>.
* @param {Object} opts The `opts` argument passed to <a href="#updateAll__anchor">updateAll</a>.
* @property {string} opts.op `afterUpdateAll`
* @param {Object[]|Response} response The updated records or {@link Response}, depending on the value of `opts.raw`.
*/
afterUpdateAll: noop2,
/**
* Lifecycle method method called by <a href="#updateMany__anchor">updateMany</a>.
*
* Override this method to add custom behavior for this lifecycle hook.
*
* Returning a Promise causes <a href="#updateMany__anchor">updateMany</a> to wait for the Promise to resolve before continuing.
*
* If `opts.raw` is `true` then `response` will be a detailed response object, otherwise `response` will be the updated records, if any.
*
* `response` may be modified. You can also re-assign `response` to another value by returning a different value or a Promise that resolves to a different value.
*
* A thrown error or rejected Promise will bubble up and reject the Promise returned by <a href="#updateMany__anchor">updateMany</a>.
*
* @name Adapter#afterUpdateMany
* @method
* @param {Object} mapper The `mapper` argument passed to <a href="#updateMany__anchor">updateMany</a>.
* @param {Object[]} records The `records` argument passed to <a href="#updateMany__anchor">updateMany</a>.
* @param {Object} opts The `opts` argument passed to <a href="#updateMany__anchor">updateMany</a>.
* @property {string} opts.op `afterUpdateMany`
* @param {Object[]|Response} response The updated records or {@link Response}, depending on the value of `opts.raw`.
*/
afterUpdateMany: noop2,
/**
* Lifecycle method method called by <a href="#count__anchor">count</a>.
*
* Override this method to add custom behavior for this lifecycle hook.
*
* Returning a Promise causes <a href="#count__anchor">count</a> to wait for the Promise to resolve before continuing.
*
* A thrown error or rejected Promise will bubble up and reject the Promise returned by <a href="#count__anchor">count</a>.
*
* @name Adapter#beforeCount
* @method
* @param {Object} mapper The `mapper` argument passed to <a href="#count__anchor">count</a>.
* @param {Object} query The `query` argument passed to <a href="#count__anchor">count</a>.
* @param {Object} opts The `opts` argument passed to <a href="#count__anchor">count</a>.
* @property {string} opts.op `beforeCount`
*/
beforeCount: noop,
/**
* Lifecycle method method called by <a href="#create__anchor">create</a>.
*
* Override this method to add custom behavior for this lifecycle hook.
*
* Returning a Promise causes <a href="#create__anchor">create</a> to wait for the Promise to resolve before continuing.
*
* `props` may be modified. You can also re-assign `props` to another value by returning a different value or a Promise that resolves to a different value.
*
* A thrown error or rejected Promise will bubble up and reject the Promise returned by <a href="#create__anchor">create</a>.
*
* @name Adapter#beforeCreate
* @method
* @param {Object} mapper The `mapper` argument passed to <a href="#create__anchor">create</a>.
* @param {Object} props The `props` argument passed to <a href="#create__anchor">create</a>.
* @param {Object} opts The `opts` argument passed to <a href="#create__anchor">create</a>.
* @property {string} opts.op `beforeCreate`
*/
beforeCreate: noop,
/**
* Lifecycle method method called by <a href="#createMany__anchor">createMany</a>.
*
* Override this method to add custom behavior for this lifecycle hook.
*
* Returning a Promise causes <a href="#createMany__anchor">createMany</a> to wait for the Promise to resolve before continuing.
*
* `props` may be modified. You can also re-assign `props` to another value by returning a different value or a Promise that resolves to a different value.
*
* A thrown error or rejected Promise will bubble up and reject the Promise returned by <a href="#createMany__anchor">createMany</a>.
*
* @name Adapter#beforeCreateMany
* @method
* @param {Object} mapper The `mapper` argument passed to <a href="#createMany__anchor">createMany</a>.
* @param {Object[]} props The `props` argument passed to <a href="#createMany__anchor">createMany</a>.
* @param {Object} opts The `opts` argument passed to <a href="#createMany__anchor">createMany</a>.
* @property {string} opts.op `beforeCreateMany`
*/
beforeCreateMany: noop,
/**
* Lifecycle method method called by <a href="#destroy__anchor">destroy</a>.
*
* Override this method to add custom behavior for this lifecycle hook.
*
* Returning a Promise causes <a href="#destroy__anchor">destroy</a> to wait for the Promise to resolve before continuing.
*
* A thrown error or rejected Promise will bubble up and reject the Promise returned by <a href="#destroy__anchor">destroy</a>.
*
* @name Adapter#beforeDestroy
* @method
* @param {Object} mapper The `mapper` argument passed to <a href="#destroy__anchor">destroy</a>.
* @param {(string|number)} id The `id` argument passed to <a href="#destroy__anchor">destroy</a>.
* @param {Object} opts The `opts` argument passed to <a href="#destroy__anchor">destroy</a>.
* @property {string} opts.op `beforeDestroy`
*/
beforeDestroy: noop,
/**
* Lifecycle method method called by <a href="#destroyAll__anchor">destroyAll</a>.
*
* Override this method to add custom behavior for this lifecycle hook.
*
* Returning a Promise causes <a href="#destroyAll__anchor">destroyAll</a> to wait for the Promise to resolve before continuing.
*
* A thrown error or rejected Promise will bubble up and reject the Promise returned by <a href="#destroyAll__anchor">destroyAll</a>.
*
* @name Adapter#beforeDestroyAll
* @method
* @param {Object} mapper The `mapper` argument passed to <a href="#destroyAll__anchor">destroyAll</a>.
* @param {Object} query The `query` argument passed to <a href="#destroyAll__anchor">destroyAll</a>.
* @param {Object} opts The `opts` argument passed to <a href="#destroyAll__anchor">destroyAll</a>.
* @property {string} opts.op `beforeDestroyAll`
*/
beforeDestroyAll: noop,
/**
* Lifecycle method method called by <a href="#find__anchor">find</a>.
*
* Override this method to add custom behavior for this lifecycle hook.
*
* Returning a Promise causes <a href="#find__anchor">find</a> to wait for the Promise to resolve before continuing.
*
* A thrown error or rejected Promise will bubble up and reject the Promise returned by <a href="#find__anchor">find</a>.
*
* @name Adapter#beforeFind
* @method
* @param {Object} mapper The `mapper` argument passed to <a href="#find__anchor">find</a>.
* @param {(string|number)} id The `id` argument passed to <a href="#find__anchor">find</a>.
* @param {Object} opts The `opts` argument passed to <a href="#find__anchor">find</a>.
* @property {string} opts.op `beforeFind`
*/
beforeFind: noop,
/**
* Lifecycle method method called by <a href="#findAll__anchor">findAll</a>.
*
* Override this method to add custom behavior for this lifecycle hook.
*
* Returning a Promise causes <a href="#findAll__anchor">findAll</a> to wait for the Promise to resolve before continuing.
*
* A thrown error or rejected Promise will bubble up and reject the Promise returned by <a href="#findAll__anchor">findAll</a>.
*
* @name Adapter#beforeFindAll
* @method
* @param {Object} mapper The `mapper` argument passed to <a href="#findAll__anchor">findAll</a>.
* @param {Object} query The `query` argument passed to <a href="#findAll__anchor">findAll</a>.
* @param {Object} opts The `opts` argument passed to <a href="#findAll__anchor">findAll</a>.
* @property {string} opts.op `beforeFindAll`
*/
beforeFindAll: noop,
/**
* Lifecycle method method called by <a href="#sum__anchor">sum</a>.
*
* Override this method to add custom behavior for this lifecycle hook.
*
* Returning a Promise causes <a href="#sum__anchor">sum</a> to wait for the Promise to resolve before continuing.
*
* A thrown error or rejected Promise will bubble up and reject the Promise returned by <a href="#sum__anchor">sum</a>.
*
* @name Adapter#beforeSum
* @method
* @param {Object} mapper The `mapper` argument passed to <a href="#sum__anchor">sum</a>.
* @param {Object} query The `query` argument passed to <a href="#sum__anchor">sum</a>.
* @param {Object} opts The `opts` argument passed to <a href="#sum__anchor">sum</a>.
* @property {string} opts.op `beforeSum`
*/
beforeSum: noop,
/**
* Lifecycle method method called by <a href="#update__anchor">update</a>.
*
* Override this method to add custom behavior for this lifecycle hook.
*
* Returning a Promise causes <a href="#update__anchor">update</a> to wait for the Promise to resolve before continuing.
*
* `props` may be modified. You can also re-assign `props` to another value by returning a different value or a Promise that resolves to a different value.
*
* A thrown error or rejected Promise will bubble up and reject the Promise returned by <a href="#update__anchor">update</a>.
*
* @name Adapter#beforeUpdate
* @method
* @param {Object} mapper The `mapper` argument passed to <a href="#update__anchor">update</a>.
* @param {(string|number)} id The `id` argument passed to <a href="#update__anchor">update</a>.
* @param {Object} props The `props` argument passed to <a href="#update__anchor">update</a>.
* @param {Object} opts The `opts` argument passed to <a href="#update__anchor">update</a>.
* @property {string} opts.op `beforeUpdate`
*/
beforeUpdate: noop,
/**
* Lifecycle method method called by <a href="#updateAll__anchor">updateAll</a>.
*
* Override this method to add custom behavior for this lifecycle hook.
*
* Returning a Promise causes <a href="#updateAll__anchor">updateAll</a> to wait for the Promise to resolve before continuing.
*
* `props` may be modified. You can also re-assign `props` to another value by returning a different value or a Promise that resolves to a different value.
*
* A thrown error or rejected Promise will bubble up and reject the Promise returned by <a href="#updateAll__anchor">updateAll</a>.
*
* @name Adapter#beforeUpdateAll
* @method
* @param {Object} mapper The `mapper` argument passed to <a href="#updateAll__anchor">updateAll</a>.
* @param {Object} props The `props` argument passed to <a href="#updateAll__anchor">updateAll</a>.
* @param {Object} query The `query` argument passed to <a href="#updateAll__anchor">updateAll</a>.
* @param {Object} opts The `opts` argument passed to <a href="#updateAll__anchor">updateAll</a>.
* @property {string} opts.op `beforeUpdateAll`
*/
beforeUpdateAll: noop,
/**
* Lifecycle method method called by <a href="#updateMany__anchor">updateMany</a>.
*
* Override this method to add custom behavior for this lifecycle hook.
*
* Returning a Promise causes <a href="#updateMany__anchor">updateMany</a> to wait for the Promise to resolve before continuing.
*
* `props` may be modified. You can also re-assign `props` to another value by returning a different value or a Promise that resolves to a different value.
*
* A thrown error or rejected Promise will bubble up and reject the Promise returned by <a href="#updateMany__anchor">updateMany</a>.
*
* @name Adapter#beforeUpdateMany
* @method
* @param {Object} mapper The `mapper` argument passed to <a href="#updateMany__anchor">updateMany</a>.
* @param {Object[]} props The `props` argument passed to <a href="#updateMany__anchor">updateMany</a>.
* @param {Object} opts The `opts` argument passed to <a href="#updateMany__anchor">updateMany</a>.
* @property {string} opts.op `beforeUpdateMany`
*/
beforeUpdateMany: noop,
/**
* Retrieve the number of records that match the selection query. Called by
* `Mapper#count`.
*
* @name Adapter#count
* @method
* @param {Object} mapper The mapper.
* @param {Object} [query] Selection query.
* @param {Object} [query.where] Filtering criteria.
* @param {string|Array} [query.orderBy] Sorting criteria.
* @param {string|Array} [query.sort] Same as `query.sort`.
* @param {number} [query.limit] Limit results.
* @param {number} [query.skip] Offset results.
* @param {number} [query.offset] Same as `query.skip`.
* @param {Object} [opts] Configuration options.
* @param {boolean} [opts.raw=false] Whether to return a more detailed
* response object.
* @return {Promise}
*/
count (mapper, query, opts) {
let op
query || (query = {})
opts || (opts = {})
// beforeCount lifecycle hook
op = opts.op = 'beforeCount'
return utils.resolve(this[op](mapper, query, opts))
.then(() => {
// Allow for re-assignment from lifecycle hook
op = opts.op = 'count'
this.dbg(op, mapper, query, opts)
return utils.resolve(this._count(mapper, query, opts))
})
.then((results) => {
let [data, result] = results
result || (result = {})
let response = new Response(data, result, op)
response = this.respond(response, opts)
// afterCount lifecycle hook
op = opts.op = 'afterCount'
return utils.resolve(this[op](mapper, query, opts, response))
.then((_response) => _response === undefined ? response : _response)
})
},
/**
* Create a new record. Called by `Mapper#create`.
*
* @name Adapter#create
* @method
* @param {Object} mapper The mapper.
* @param {Object} props The record to be created.
* @param {Object} [opts] Configuration options.
* @param {boolean} [opts.raw=false] Whether to return a more detailed
* response object.
* @return {Promise}
*/
create (mapper, props, opts) {
let op
props || (props = {})
opts || (opts = {})
// beforeCreate lifecycle hook
op = opts.op = 'beforeCreate'
return utils.resolve(this[op](mapper, props, opts))
.then((_props) => {
// Allow for re-assignment from lifecycle hook
props = _props === undefined ? props : _props
props = withoutRelations(mapper, props, opts)
op = opts.op = 'create'
this.dbg(op, mapper, props, opts)
return utils.resolve(this._create(mapper, props, opts))
})
.then((results) => {
let [data, result] = results
result || (result = {})
let response = new Response(data, result, 'create')
response.created = data ? 1 : 0
response = this.respond(response, opts)
// afterCreate lifecycle hook
op = opts.op = 'afterCreate'
return utils.resolve(this[op](mapper, props, opts, response))
.then((_response) => _response === undefined ? response : _response)
})
},
/**
* Create multiple records in a single batch. Called by `Mapper#createMany`.
*
* @name Adapter#createMany
* @method
* @param {Object} mapper The mapper.
* @param {Object} props The records to be created.
* @param {Object} [opts] Configuration options.
* @param {boolean} [opts.raw=false] Whether to return a more detailed
* response object.
* @return {Promise}
*/
createMany (mapper, props, opts) {
let op
props || (props = {})
opts || (opts = {})
// beforeCreateMany lifecycle hook
op = opts.op = 'beforeCreateMany'
return utils.resolve(this[op](mapper, props, opts))
.then((_props) => {
// Allow for re-assignment from lifecycle hook
props = _props === undefined ? props : _props
props = props.map((record) => withoutRelations(mapper, record, opts))
op = opts.op = 'createMany'
this.dbg(op, mapper, props, opts)
return utils.resolve(this._createMany(mapper, props, opts))
})
.then((results) => {
let [data, result] = results
data || (data = [])
result || (result = {})
let response = new Response(data, result, 'createMany')
response.created = data.length
response = this.respond(response, opts)
// afterCreateMany lifecycle hook
op = opts.op = 'afterCreateMany'
return utils.resolve(this[op](mapper, props, opts, response))
.then((_response) => _response === undefined ? response : _response)
})
},
/**
* Destroy the record with the given primary key. Called by
* `Mapper#destroy`.
*
* @name Adapter#destroy
* @method
* @param {Object} mapper The mapper.
* @param {(string|number)} id Primary key of the record to destroy.
* @param {Object} [opts] Configuration options.
* @param {boolean} [opts.raw=false] Whether to return a more detailed
* response object.
* @return {Promise}
*/
destroy (mapper, id, opts) {
let op
opts || (opts = {})
// beforeDestroy lifecycle hook
op = opts.op = 'beforeDestroy'
return utils.resolve(this[op](mapper, id, opts))
.then(() => {
op = opts.op = 'destroy'
this.dbg(op, mapper, id, opts)
return utils.resolve(this._destroy(mapper, id, opts))
})
.then((results) => {
let [data, result] = results
result || (result = {})
let response = new Response(data, result, 'destroy')
response = this.respond(response, opts)
// afterDestroy lifecycle hook
op = opts.op = 'afterDestroy'
return utils.resolve(this[op](mapper, id, opts, response))
.then((_response) => _response === undefined ? response : _response)
})
},
/**
* Destroy the records that match the selection query. Called by
* `Mapper#destroyAll`.
*
* @name Adapter#destroyAll
* @method
* @param {Object} mapper the mapper.
* @param {Object} [query] Selection query.
* @param {Object} [query.where] Filtering criteria.
* @param {string|Array} [query.orderBy] Sorting criteria.
* @param {string|Array} [query.sort] Same as `query.sort`.
* @param {number} [query.limit] Limit results.
* @param {number} [query.skip] Offset results.
* @param {number} [query.offset] Same as `query.skip`.
* @param {Object} [opts] Configuration options.
* @param {boolean} [opts.raw=false] Whether to return a more detailed
* response object.
* @return {Promise}
*/
destroyAll (mapper, query, opts) {
let op
query || (query = {})
opts || (opts = {})
// beforeDestroyAll lifecycle hook
op = opts.op = 'beforeDestroyAll'
return utils.resolve(this[op](mapper, query, opts))
.then(() => {
op = opts.op = 'destroyAll'
this.dbg(op, mapper, query, opts)
return utils.resolve(this._destroyAll(mapper, query, opts))
})
.then((results) => {
let [data, result] = results
result || (result = {})
let response = new Response(data, result, 'destroyAll')
response = this.respond(response, opts)
// afterDestroyAll lifecycle hook
op = opts.op = 'afterDestroyAll'
return utils.resolve(this[op](mapper, query, opts, response))
.then((_response) => _response === undefined ? response : _response)
})
},
/**
* Load a belongsTo relationship.
*
* Override with care.
*
* @name Adapter#loadBelongsTo
* @method
* @return {Promise}
*/
loadBelongsTo (mapper, def, records, __opts) {
const relationDef = def.getRelation()
if (utils.isObject(records) && !utils.isArray(records)) {
const record = records
return this.find(relationDef, this.makeBelongsToForeignKey(mapper, def, record), __opts)
.then((relatedItem) => {
def.setLocalField(record, relatedItem)
})
} else {
const keys = records
.map((record) => this.makeBelongsToForeignKey(mapper, def, record))
.filter((key) => key)
return this.findAll(relationDef, {
where: {
[relationDef.idAttribute]: {
'in': keys
}
}
}, __opts).then((relatedItems) => {
records.forEach((record) => {
relatedItems.forEach((relatedItem) => {
if (relatedItem[relationDef.idAttribute] === record[def.foreignKey]) {
def.setLocalField(record, relatedItem)
}
})
})
})
}
},
/**
* Retrieve the record with the given primary key. Called by `Mapper#find`.
*
* @name Adapter#find
* @method
* @param {Object} mapper The mapper.
* @param {(string|number)} id Primary key of the record to retrieve.
* @param {Object} [opts] Configuration options.
* @param {boolean} [opts.raw=false] Whether to return a more detailed
* response object.
* @param {string[]} [opts.with=[]] Relations to eager load.
* @return {Promise}
*/
find (mapper, id, opts) {
let record, op
let meta = {}
opts || (opts = {})
opts.with || (opts.with = [])
// beforeFind lifecycle hook
op = opts.op = 'beforeFind'
return utils.resolve(this[op](mapper, id, opts))
.then(() => {
op = opts.op = 'find'
this.dbg(op, mapper, id, opts)
return utils.resolve(this._find(mapper, id, opts))
})
.then((results) => {
let [_record, _meta] = results
if (!_record) {
return
}
record = _record
meta = _meta
const tasks = []
utils.forEachRelation(mapper, opts, (def, __opts) => {
let task
if (def.foreignKey && (def.type === 'hasOne' || def.type === 'hasMany')) {
if (def.type === 'hasOne') {
task = this.loadHasOne(mapper, def, record, __opts)
} else {
task = this.loadHasMany(mapper, def, record, __opts)
}
} else if (def.type === 'hasMany' && def.localKeys) {
task = this.loadHasManyLocalKeys(mapper, def, record, __opts)
} else if (def.type === 'hasMany' && def.foreignKeys) {
task = this.loadHasManyForeignKeys(mapper, def, record, __opts)
} else if (def.type === 'belongsTo') {
task = this.loadBelongsTo(mapper, def, record, __opts)
}
if (task) {
tasks.push(task)
}
})
return utils.Promise.all(tasks)
})
.then(() => {
let response = new Response(record, meta, 'find')
response.found = record ? 1 : 0
response = this.respond(response, opts)
// afterFind lifecycle hook
op = opts.op = 'afterFind'
return utils.resolve(this[op](mapper, id, opts, response))
.then((_response) => _response === undefined ? response : _response)
})
},
/**
* Retrieve the records that match the selection query.
*
* @name Adapter#findAll
* @method
* @param {Object} mapper The mapper.
* @param {Object} [query] Selection query.
* @param {Object} [query.where] Filtering criteria.
* @param {string|Array} [query.orderBy] Sorting criteria.
* @param {string|Array} [query.sort] Same as `query.sort`.
* @param {number} [query.limit] Limit results.
* @param {number} [query.skip] Offset results.
* @param {number} [query.offset] Same as `query.skip`.
* @param {Object} [opts] Configuration options.
* @param {boolean} [opts.raw=false] Whether to return a more detailed
* response object.
* @param {string[]} [opts.with=[]] Relations to eager load.
* @return {Promise}
*/
findAll (mapper, query, opts) {
opts || (opts = {})
opts.with || (opts.with = [])
let records = []
let meta = {}
let op
const activeWith = opts._activeWith
if (utils.isObject(activeWith)) {
const activeQuery = activeWith.query || {}
if (activeWith.replace) {
query = activeQuery
} else {
utils.deepFillIn(query, activeQuery)
}
}
// beforeFindAll lifecycle hook
op = opts.op = 'beforeFindAll'
return utils.resolve(this[op](mapper, query, opts))
.then(() => {
op = opts.op = 'findAll'
this.dbg(op, mapper, query, opts)
return utils.resolve(this._findAll(mapper, query, opts))
})
.then((results) => {
let [_records, _meta] = results
_records || (_records = [])
records = _records
meta = _meta
const tasks = []
utils.forEachRelation(mapper, opts, (def, __opts) => {
let task
if (def.foreignKey && (def.type === 'hasOne' || def.type === 'hasMany')) {
if (def.type === 'hasMany') {
task = this.loadHasMany(mapper, def, records, __opts)
} else {
task = this.loadHasOne(mapper, def, records, __opts)
}
} else if (def.type === 'hasMany' && def.localKeys) {
task = this.loadHasManyLocalKeys(mapper, def, records, __opts)
} else if (def.type === 'hasMany' && def.foreignKeys) {
task = this.loadHasManyForeignKeys(mapper, def, records, __opts)
} else if (def.type === 'belongsTo') {
task = this.loadBelongsTo(mapper, def, records, __opts)
}
if (task) {
tasks.push(task)
}
})
return utils.Promise.all(tasks)
})
.then(() => {
let response = new Response(records, meta, 'findAll')
response.found = records.length
response = this.respond(response, opts)
// afterFindAll lifecycle hook
op = opts.op = 'afterFindAll'
return utils.resolve(this[op](mapper, query, opts, response))
.then((_response) => _response === undefined ? response : _response)
})
},
/**
* Resolve the value of the specified option based on the given options and
* this adapter's settings. Override with care.
*
* @name Adapter#getOpt
* @method
* @param {string} opt The name of the option.
* @param {Object} [opts] Configuration options.
* @return {*} The value of the specified option.
*/
getOpt (opt, opts) {
opts || (opts = {})
return opts[opt] === undefined ? utils.plainCopy(this[opt]) : utils.plainCopy(opts[opt])
},
/**
* Load a hasMany relationship.
*
* Override with care.
*
* @name Adapter#loadHasMany
* @method
* @return {Promise}
*/
loadHasMany (mapper, def, records, __opts) {
let singular = false
if (utils.isObject(records) && !utils.isArray(records)) {
singular = true
records = [records]
}
const IDs = records.map((record) => this.makeHasManyForeignKey(mapper, def, record))
const query = {
where: {}
}
const criteria = query.where[def.foreignKey] = {}
if (singular) {
// more efficient query when we only have one record
criteria['=='] = IDs[0]
} else {
criteria['in'] = IDs.filter((id) => id)
}
return this.findAll(def.getRelation(), query, __opts).then((relatedItems) => {
records.forEach((record) => {
let attached = []
// avoid unneccesary iteration when we only have one record
if (singular) {
attached = relatedItems
} else {
relatedItems.forEach((relatedItem) => {
if (utils.get(relatedItem, def.foreignKey) === record[mapper.idAttribute]) {
attached.push(relatedItem)
}
})
}
def.setLocalField(record, attached)
})
})
},
loadHasManyLocalKeys (mapper, def, records, __opts) {
let record
const relatedMapper = def.getRelation()
if (utils.isObject(records) && !utils.isArray(records)) {
record = records
}
if (record) {
return this.findAll(relatedMapper, {
where: {
[relatedMapper.idAttribute]: {
'in': this.makeHasManyLocalKeys(mapper, def, record)
}
}
}, __opts).then((relatedItems) => {
def.setLocalField(record, relatedItems)
})
} else {
let localKeys = []
records.forEach((record) => {
localKeys = localKeys.concat(this.makeHasManyLocalKeys(mapper, def, record))
})
return this.findAll(relatedMapper, {
where: {
[relatedMapper.idAttribute]: {
'in': unique(localKeys).filter((x) => x)
}
}
}, __opts).then((relatedItems) => {
records.forEach((item) => {
let attached = []
let itemKeys = utils.get(item, def.localKeys) || []
itemKeys = utils.isArray(itemKeys) ? itemKeys : Object.keys(itemKeys)
relatedItems.forEach((relatedItem) => {
if (itemKeys && itemKeys.indexOf(relatedItem[relatedMapper.idAttribute]) !== -1) {
attached.push(relatedItem)
}
})
def.setLocalField(item, attached)
})
return relatedItems
})
}
},
loadHasManyForeignKeys (mapper, def, records, __opts) {
const relatedMapper = def.getRelation()
const idAttribute = mapper.idAttribute
let record
if (utils.isObject(records) && !utils.isArray(records)) {
record = records
}
if (record) {
return this.findAll(def.getRelation(), {
where: {
[def.foreignKeys]: {
'contains': this.makeHasManyForeignKeys(mapper, def, record)
}
}
}, __opts).then((relatedItems) => {
def.setLocalField(record, relatedItems)
})
} else {
return this.findAll(relatedMapper, {
where: {
[def.foreignKeys]: {
'isectNotEmpty': records.map((record) => this.makeHasManyForeignKeys(mapper, def, record))
}
}
}, __opts).then((relatedItems) => {
const foreignKeysField = def.foreignKeys
records.forEach((record) => {
const _relatedItems = []
const id = utils.get(record, idAttribute)
relatedItems.forEach((relatedItem) => {
const foreignKeys = utils.get(relatedItems, foreignKeysField) || []
if (foreignKeys.indexOf(id) !== -1) {
_relatedItems.push(relatedItem)
}
})
def.setLocalField(record, _relatedItems)
})
})
}
},
/**
* Load a hasOne relationship.
*
* Override with care.
*
* @name Adapter#loadHasOne
* @method
* @return {Promise}
*/
loadHasOne (mapper, def, records, __opts) {
if (utils.isObject(records) && !utils.isArray(records)) {
records = [records]
}
return this.loadHasMany(mapper, def, records, __opts).then(() => {
records.forEach((record) => {
const relatedData = def.getLocalField(record)
if (utils.isArray(relatedData) && relatedData.length) {
def.setLocalField(record, relatedData[0])
}
})
})
},
/**
* Return the foreignKey from the given record for the provided relationship.
*
* There may be reasons why you may want to override this method, like when
* the id of the parent doesn't exactly match up to the key on the child.
*
* Override with care.
*
* @name Adapter#makeHasManyForeignKey
* @method
* @return {*}
*/
makeHasManyForeignKey (mapper, def, record) {
return def.getForeignKey(record)
},
/**
* Return the localKeys from the given record for the provided relationship.
*
* Override with care.
*
* @name Adapter#makeHasManyLocalKeys
* @method
* @return {*}
*/
makeHasManyLocalKeys (mapper, def, record) {
let localKeys = []
let itemKeys = utils.get(record, def.localKeys) || []
itemKeys = utils.isArray(itemKeys) ? itemKeys : Object.keys(itemKeys)
localKeys = localKeys.concat(itemKeys)
return unique(localKeys).filter((x) => x)
},
/**
* Return the foreignKeys from the given record for the provided relationship.
*
* Override with care.
*
* @name Adapter#makeHasManyForeignKeys
* @method
* @return {*}
*/
makeHasManyForeignKeys (mapper, def, record) {
return utils.get(record, mapper.idAttribute)
},
/**
* Return the foreignKey from the given record for the provided relationship.
*
* Override with care.
*
* @name Adapter#makeBelongsToForeignKey
* @method
* @return {*}
*/
makeBelongsToForeignKey (mapper, def, record) {
return def.getForeignKey(record)
},
/**
* Retrieve sum of the specified field of the records that match the selection
* query. Called by `Mapper#sum`.
*
* @name Adapter#sum
* @method
* @param {Object} mapper The mapper.
* @param {string} field By to sum.
* @param {Object} [query] Selection query.
* @param {Object} [query.where] Filtering criteria.
* @param {string|Array} [query.orderBy] Sorting criteria.
* @param {string|Array} [query.sort] Same as `query.sort`.
* @param {number} [query.limit] Limit results.
* @param {number} [query.skip] Offset results.
* @param {number} [query.offset] Same as `query.skip`.
* @param {Object} [opts] Configuration options.
* @param {boolean} [opts.raw=false] Whether to return a more detailed
* response object.
* @return {Promise}
*/
sum (mapper, field, query, opts) {
let op
if (!utils.isString(field)) {
throw new Error('field must be a string!')
}
query || (query = {})
opts || (opts = {})
// beforeSum lifecycle hook
op = opts.op = 'beforeSum'
return utils.resolve(this[op](mapper, field, query, opts))
.then(() => {
// Allow for re-assignment from lifecycle hook
op = opts.op = 'sum'
this.dbg(op, mapper, field, query, opts)
return utils.resolve(this._sum(mapper, field, query, opts))
})
.then((results) => {
let [data, result] = results
result || (result = {})
let response = new Response(data, result, op)
response = this.respond(response, opts)
// afterSum lifecycle hook
op = opts.op = 'afterSum'
return utils.resolve(this[op](mapper, field, query, opts, response))
.then((_response) => _response === undefined ? response : _response)
})
},
/**
* @name Adapter#respond
* @method
* @param {Object} response Response object.
* @param {Object} opts Configuration options.
* return {Object} If `opts.raw == true` then return `response`, else return
* `response.data`.
*/
respond (response, opts) {
return this.getOpt('raw', opts) ? response : response.data
},
/**
* Apply the given update to the record with the specified primary key. Called
* by `Mapper#update`.
*
* @name Adapter#update
* @method
* @param {Object} mapper The mapper.
* @param {(string|number)} id The primary key of the record to be updated.
* @param {Object} props The update to apply to the record.
* @param {Object} [opts] Configuration options.
* @param {boolean} [opts.raw=false] Whether to return a more detailed
* response object.
* @return {Promise}
*/
update (mapper, id, props, opts) {
props || (props = {})
opts || (opts = {})
let op
// beforeUpdate lifecycle hook
op = opts.op = 'beforeUpdate'
return utils.resolve(this[op](mapper, id, props, opts))
.then((_props) => {
// Allow for re-assignment from lifecycle hook
props = _props === undefined ? props : _props
props = withoutRelations(mapper, props, opts)
op = opts.op = 'update'
this.dbg(op, mapper, id, props, opts)
return utils.resolve(this._update(mapper, id, props, opts))
})
.then((results) => {
let [data, result] = results
result || (result = {})
let response = new Response(data, result, 'update')
response.updated = data ? 1 : 0
response = this.respond(response, opts)
// afterUpdate lifecycle hook
op = opts.op = 'afterUpdate'
return utils.resolve(this[op](mapper, id, props, opts, response))
.then((_response) => _response === undefined ? response : _response)
})
},
/**
* Apply the given update to all records that match the selection query.
* Called by `Mapper#updateAll`.
*
* @name Adapter#updateAll
* @method
* @param {Object} mapper The mapper.
* @param {Object} props The update to apply to the selected records.
* @param {Object} [query] Selection query.
* @param {Object} [query.where] Filtering criteria.
* @param {string|Array} [query.orderBy] Sorting criteria.
* @param {string|Array} [query.sort] Same as `query.sort`.
* @param {number} [query.limit] Limit results.
* @param {number} [query.skip] Offset results.
* @param {number} [query.offset] Same as `query.skip`.
* @param {Object} [opts] Configuration options.
* @param {boolean} [opts.raw=false] Whether to return a more detailed
* response object.
* @return {Promise}
*/
updateAll (mapper, props, query, opts) {
props || (props = {})
query || (query = {})
opts || (opts = {})
let op
// beforeUpdateAll lifecycle hook
op = opts.op = 'beforeUpdateAll'
return utils.resolve(this[op](mapper, props, query, opts))
.then((_props) => {
// Allow for re-assignment from lifecycle hook
props = _props === undefined ? props : _props
props = withoutRelations(mapper, props, opts)
op = opts.op = 'updateAll'
this.dbg(op, mapper, props, query, opts)
return utils.resolve(this._updateAll(mapper, props, query, opts))
})
.then((results) => {
let [data, result] = results
data || (data = [])
result || (result = {})
let response = new Response(data, result, 'updateAll')
response.updated = data.length
response = this.respond(response, opts)
// afterUpdateAll lifecycle hook
op = opts.op = 'afterUpdateAll'
return utils.resolve(this[op](mapper, props, query, opts, response))
.then((_response) => _response === undefined ? response : _response)
})
},
/**
* Update the given records in a single batch. Called by `Mapper#updateMany`.
*
* @name Adapter#updateMany
* @method
* @param {Object} mapper The mapper.
* @param {Object[]} records The records to update.
* @param {Object} [opts] Configuration options.
* @param {boolean} [opts.raw=false] Whether to return a more detailed
* response object.
* @return {Promise}
*/
updateMany (mapper, records, opts) {
records || (records = [])
opts || (opts = {})
let op
const idAttribute = mapper.idAttribute
records = records.filter((record) => utils.get(record, idAttribute))
// beforeUpdateMany lifecycle hook
op = opts.op = 'beforeUpdateMany'
return utils.resolve(this[op](mapper, records, opts))
.then((_records) => {
// Allow for re-assignment from lifecycle hook
records = _records === undefined ? records : _records
records = records.map((record) => withoutRelations(mapper, record, opts))
op = opts.op = 'updateMany'
this.dbg(op, mapper, records, opts)
return utils.resolve(this._updateMany(mapper, records, opts))
})
.then((results) => {
let [data, result] = results
data || (data = [])
result || (result = {})
let response = new Response(data, result, 'updateMany')
response.updated = data.length
response = this.respond(response, opts)
// afterUpdateMany lifecycle hook
op = opts.op = 'afterUpdateMany'
return utils.resolve(this[op](mapper, records, opts, response))
.then((_response) => _response === undefined ? response : _response)
})
}
})
/**
* Create a subclass of this Adapter:
*
* @example <caption>Adapter.extend</caption>
* // Normally you would do: import {Adapter} from 'js-data'
* const JSData = require('js-data@3.0.0-beta.10')
* const {Adapter} = JSData
* console.log('Using JSData v' + JSData.version.full)
*
* // Extend the class using ES2015 class syntax.
* class CustomAdapterClass extends Adapter {
* foo () { return 'bar' }
* static beep () { return 'boop' }
* }
* const customAdapter = new CustomAdapterClass()
* console.log(customAdapter.foo())
* console.log(CustomAdapterClass.beep())
*
* // Extend the class using alternate method.
* const OtherAdapterClass = Adapter.extend({
* foo () { return 'bar' }
* }, {
* beep () { return 'boop' }
* })
* const otherAdapter = new OtherAdapterClass()
* console.log(otherAdapter.foo())
* console.log(OtherAdapterClass.beep())
*
* // Extend the class, providing a custom constructor.
* function AnotherAdapterClass () {
* Adapter.call(this)
* this.created_at = new Date().getTime()
* }
* Adapter.extend({
* constructor: AnotherAdapterClass,
* foo () { return 'bar' }
* }, {
* beep () { return 'boop' }
* })
* const anotherAdapter = new AnotherAdapterClass()
* console.log(anotherAdapter.created_at)
* console.log(anotherAdapter.foo())
* console.log(AnotherAdapterClass.beep())
*
* @method Adapter.extend
* @param {Object} [props={}] Properties to add to the prototype of the
* subclass.
* @param {Object} [props.constructor] Provide a custom constructor function
* to be used as the subclass itself.
* @param {Object} [classProps={}] Static properties to add to the subclass.
* @returns {Constructor} Subclass of this Adapter class.
*/
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