kysely-mapper/dist/esm/queries/compiling-select-query.js

Flexible Kysely-based utility for mapping between tables and objects

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 __classPrivateFieldSet = (this && this.__classPrivateFieldSet) || function (receiver, state, value, kind, f) {
    if (kind === "m") throw new TypeError("Private method is not writable");
    if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a setter");
    if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot write private member to an object whose class did not declare it");
    return (kind === "a" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;
};
var __classPrivateFieldGet = (this && this.__classPrivateFieldGet) || function (receiver, state, kind, f) {
    if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a getter");
    if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot read private member from an object whose class did not declare it");
    return kind === "m" ? f : kind === "a" ? f.call(receiver) : f ? f.value : state.get(receiver);
};
var _CompilingMappingSelectQuery_parameterizedQuery;
import { ParameterizedQuery } from 'kysely-params';
/**
 * Compiling mapping query for selecting rows from a database table.
 */
export class CompilingMappingSelectQuery {
    constructor(db, qb, transforms) {
        this.db = db;
        this.transforms = transforms;
        _CompilingMappingSelectQuery_parameterizedQuery.set(this, void 0);
        __classPrivateFieldSet(this, _CompilingMappingSelectQuery_parameterizedQuery, new ParameterizedQuery(qb), "f");
    }
    /**
     * Retrieves zero or more rows from the table, using `selectTransform`
     * (if provided) to map the rows to objects of type `SelectedObject`.
     * Accepts values for any parameters embedded in the query.
     *
     * On the first execution, compiles and discards the underlying Kysely
     * query builder. Subsequent executions reuse the compiled query.
     * @param params Record characterizing the parameter names and types.
     *  Pass in `{}` if the query has no parameters.
     * @returns An array of objects for the selected rows, possibly empty.
     */
    returnAll(params) {
        return __awaiter(this, void 0, void 0, function* () {
            const results = yield __classPrivateFieldGet(this, _CompilingMappingSelectQuery_parameterizedQuery, "f").execute(this.db, params);
            return this.transforms.selectTransform === undefined
                ? results.rows
                : results.rows.map(this.transforms.selectTransform);
        });
    }
    /**
     * Retrieves a single row from the table, using `selectTransform` (if
     * provided) to map the row to an object of type `SelectedObject`.
     * Accepts values for any parameters embedded in the query.
     *
     * On the first execution, compiles and discards the underlying Kysely
     * query builder. Subsequent executions reuse the compiled query.
     * @param params Record characterizing the parameter names and types.
     *  Pass in `{}` if the query has no parameters.
     * @returns An object for the selected rows, or null if not found.
     */
    returnOne(params) {
        return __awaiter(this, void 0, void 0, function* () {
            const result = yield __classPrivateFieldGet(this, _CompilingMappingSelectQuery_parameterizedQuery, "f").executeTakeFirst(this.db, params);
            if (!result)
                return null;
            return result === undefined
                ? null
                : this.transforms.selectTransform === undefined
                    ? result
                    : this.transforms.selectTransform(result);
        });
    }
}
_CompilingMappingSelectQuery_parameterizedQuery = new WeakMap();
//# sourceMappingURL=compiling-select-query.js.map