@mando75/typeorm-graphql-loader
Version:
A dataloader which intelligently selects/joins the fields/relations from your TypeORM entities needed to resolve a GraphQL query
190 lines • 8.64 kB
JavaScript
"use strict";
var __assign = (this && this.__assign) || function () {
__assign = Object.assign || function(t) {
for (var s, i = 1, n = arguments.length; i < n; i++) {
s = arguments[i];
for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
t[p] = s[p];
}
return t;
};
return __assign.apply(this, arguments);
};
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
while (_) try {
if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
if (y = 0, t) op = [op[0] & 2, t.value];
switch (op[0]) {
case 0: case 1: t = op; break;
case 4: _.label++; return { value: op[1], done: false };
case 5: _.label++; y = op[1]; op = [0]; continue;
case 7: op = _.ops.pop(); _.trys.pop(); continue;
default:
if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
if (t[2]) _.ops.pop();
_.trys.pop(); continue;
}
op = body.call(thisArg, _);
} catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
}
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.GraphQLQueryBuilder = void 0;
var GraphQLInfoParser_1 = require("./lib/GraphQLInfoParser");
var GraphQLQueryBuilder = (function () {
function GraphQLQueryBuilder(_manager, _entity, _alias) {
this._manager = _manager;
this._entity = _entity;
this._alias = _alias;
this._info = null;
this._andWhereExpressions = [];
this._orWhereExpressions = [];
this._searchExpressions = [];
this._order = {};
this._selectFields = [];
this._parser = new GraphQLInfoParser_1.GraphQLInfoParser();
this._ejectQueryCallback = null;
}
GraphQLQueryBuilder.prototype.info = function (info, fieldName) {
this._info = this._parser.parseResolveInfoModels(info, fieldName);
return this;
};
GraphQLQueryBuilder.prototype.where = function (where, params) {
if (typeof where === "string") {
this._andWhereExpressions.push({
condition: where,
params: params,
});
}
else {
this._andWhereExpressions.push(where);
}
return this;
};
GraphQLQueryBuilder.prototype.orWhere = function (where, params) {
if (typeof where === "string") {
this._orWhereExpressions.push({ condition: where, params: params });
}
else {
this._orWhereExpressions.push(where);
}
return this;
};
GraphQLQueryBuilder.prototype.search = function (searchOptions) {
this._searchExpressions.push(searchOptions);
return this;
};
GraphQLQueryBuilder.prototype.order = function (order) {
this._order = __assign(__assign({}, this._order), order);
return this;
};
GraphQLQueryBuilder.prototype.selectFields = function (fields) {
this._selectFields.push(fields);
return this;
};
GraphQLQueryBuilder.prototype.paginate = function (pagination) {
this._pagination = pagination;
return this;
};
GraphQLQueryBuilder.prototype.context = function (context) {
this._context = context;
return this;
};
GraphQLQueryBuilder.prototype.ejectQueryBuilder = function (cb) {
this._ejectQueryCallback = cb;
return this;
};
GraphQLQueryBuilder.prototype.loadOne = function () {
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
return [2, this._genericLoad(false, false)];
});
});
};
GraphQLQueryBuilder.prototype.loadMany = function () {
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
return [2, this._genericLoad(true, false)];
});
});
};
GraphQLQueryBuilder.prototype.loadPaginated = function () {
return __awaiter(this, void 0, void 0, function () {
return __generator(this, function (_a) {
if (!this._pagination) {
throw new Error("Must provide pagination object before calling load paginated");
}
return [2, this._genericLoad(true, true)];
});
});
};
GraphQLQueryBuilder.prototype._genericLoad = function (many, paginate) {
var _a;
return __awaiter(this, void 0, void 0, function () {
var cacheAlias, _b, fields, found, key, item, executor, promise;
var _this = this;
return __generator(this, function (_c) {
this._validateInfo(this._info);
cacheAlias = (_a = this._alias) !== null && _a !== void 0 ? _a : (typeof this._entity === "function" ? this._entity.name : this._entity);
_b = this._manager.processQueryMeta(this._info, this._andWhereExpressions, cacheAlias), fields = _b.fields, found = _b.found, key = _b.key, item = _b.item;
if (found && item) {
return [2, item];
}
executor = function (resolve, reject) {
var _a;
_this._manager.addQueueItem({
many: many,
key: key,
fields: fields,
predicates: _this._getQueryPredicates(),
resolve: resolve,
reject: reject,
entity: _this._entity,
pagination: paginate ? _this._pagination : undefined,
alias: _this._alias,
context: _this._context,
ejectQueryCallback: (_a = _this._ejectQueryCallback) !== null && _a !== void 0 ? _a : (function (qb) { return qb; }),
});
};
promise = new Promise(executor);
this._manager.addCacheItem(key, promise);
return [2, promise];
});
});
};
GraphQLQueryBuilder.prototype._validateInfo = function (info) {
if (!this._info) {
throw new Error("Missing GraphQL Resolve info. Please invoke `.info()` before calling this method");
}
};
GraphQLQueryBuilder.prototype._getQueryPredicates = function () {
return {
search: this._searchExpressions,
andWhere: this._andWhereExpressions,
orWhere: this._orWhereExpressions,
order: this._order,
selectFields: this._selectFields.flat(),
};
};
return GraphQLQueryBuilder;
}());
exports.GraphQLQueryBuilder = GraphQLQueryBuilder;
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