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query.builder.ts
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/
query.builder.ts
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const knex = require('knex');
import {db} from "./database";
let queryBuilder: any;
if (process.env.NODE_ENV !== 'test') {
/**
* Query-Builder: creates sql query strings using functions
* @type {Knex}
*/
queryBuilder = knex({
client: 'sqlite',
connection: {filename: ':memory:'},
useNullAsDefault: true,
database : 'metaphase_db'
});
}
if (process.env.NODE_ENV === 'test') {
const mockKnex = require('mock-knex');
/**
* Mocked query-builder for tests
* @type {Knex}
*/
queryBuilder = knex({
client: 'sqlite',
debug: false,
useNullAsDefault: true,
database: 'test_db'
});
mockKnex.mock(queryBuilder);
}
//todo: testar la funcion run() y getOne()
//todo: emitir un evento personalizado para saber cuando se ha ejecutado una consulta
//todo: renombrar getOne() a getFirst()
/**
* Execute database query using query-builder
* Do not use arrow function because "this" type is incorrectly infered by typescript
* @return {Object[]} list with query results
*/
queryBuilder().__proto__.run = function() {
return db.execQuery(this);
};
/**
* Execute database query using query-builder and return only first row
* @return {Object} query result
*/
queryBuilder().__proto__.getOne = function() {
return db.execQuery(this)[0];
};
export {queryBuilder as query};