'use strict'
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const { TYPES } = require('./datatypes')
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const Table = require('./table')
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let PromiseLibrary = Promise
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const driver = {}
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const map = []
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/**
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* Register you own type map.
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*
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* @path module.exports.map
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* @param {*} jstype JS data type.
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* @param {*} sqltype SQL data type.
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*/
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map.register = function (jstype, sqltype) {
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for (let index = 0; index < this.length; index++) {
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const item = this[index]
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if (item.js === jstype) {
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this.splice(index, 1)
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break
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}
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}
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this.push({
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js: jstype,
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sql: sqltype
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})
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return null
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}
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map.register(String, TYPES.NVarChar)
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map.register(Number, TYPES.Int)
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map.register(Boolean, TYPES.Bit)
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map.register(Date, TYPES.DateTime)
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map.register(Buffer, TYPES.VarBinary)
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map.register(Table, TYPES.TVP)
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/**
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* @ignore
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*/
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const getTypeByValue = function (value) {
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if ((value === null) || (value === undefined)) { return TYPES.NVarChar }
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switch (typeof value) {
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case 'string':
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for (const item of Array.from(map)) {
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if (item.js === String) {
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return item.sql
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}
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}
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return TYPES.NVarChar
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case 'number':
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if (value % 1 === 0) {
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if (value < -2147483648 || value > 2147483647) {
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return TYPES.BigInt
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} else {
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return TYPES.Int
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}
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} else {
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return TYPES.Float
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}
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case 'bigint':
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if (value < -2147483648n || value > 2147483647n) {
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return TYPES.BigInt
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} else {
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return TYPES.Int
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}
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case 'boolean':
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for (const item of Array.from(map)) {
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if (item.js === Boolean) {
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return item.sql
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}
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}
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return TYPES.Bit
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case 'object':
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for (const item of Array.from(map)) {
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if (value instanceof item.js) {
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return item.sql
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}
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}
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return TYPES.NVarChar
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default:
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return TYPES.NVarChar
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}
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}
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module.exports = {
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driver,
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getTypeByValue,
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map
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}
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Object.defineProperty(module.exports, 'Promise', {
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get: () => {
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return PromiseLibrary
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},
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set: (value) => {
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PromiseLibrary = value
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}
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})
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Object.defineProperty(module.exports, 'valueHandler', {
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enumerable: true,
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value: new Map(),
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writable: false,
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configurable: false
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})
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