956 lines
28 KiB
JavaScript
956 lines
28 KiB
JavaScript
/*!
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* Module dependencies
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*/
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var mysql = require('mysql');
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var jdb = require('loopback-datasource-juggler');
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var EnumFactory = require('./enumFactory').EnumFactory;
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/**
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* @module loopback-connector-mysql
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*
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* Initialize the MySQL connector against the given data source
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*
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* @param {DataSource} dataSource The loopback-datasource-juggler dataSource
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* @param {Function} [callback] The callback function
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*/
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exports.initialize = function initializeDataSource(dataSource, callback) {
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if (!mysql) {
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return;
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}
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var s = dataSource.settings;
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if (s.collation) {
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s.charset = s.collation.substr(0,s.collation.indexOf('_')); // Charset should be first 'chunk' of collation.
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} else {
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s.collation = 'utf8_general_ci';
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s.charset = 'utf8';
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}
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s.supportBigNumbers = (s.supportBigNumbers || false);
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s.timezone = (s.timezone || 'local');
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dataSource.client = mysql.createConnection({
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host: s.host || s.hostname || 'localhost',
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port: s.port || 3306,
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user: s.username || s.user,
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password: s.password,
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timezone: s.timezone,
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debug: s.debug,
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socketPath: s.socketPath,
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charset: s.collation.toUpperCase(), // Correct by docs despite seeming odd.
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supportBigNumbers: s.supportBigNumbers
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});
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dataSource.client.on('error', function (err) {
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dataSource.emit('error', err);
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});
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dataSource.connector = new MySQL(dataSource.client);
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dataSource.connector.dataSource = dataSource;
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dataSource.client.query('USE `' + s.database + '`', function (err) {
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if (err) {
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if (err.message.match(/(^|: )unknown database/i)) {
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var dbName = s.database;
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var charset = s.charset;
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var collation = s.collation;
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var q = 'CREATE DATABASE ' + dbName + ' CHARACTER SET ' + charset + ' COLLATE ' + collation;
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dataSource.client.query(q, function (error) {
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if (!error) {
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dataSource.client.query('USE ' + s.database, callback);
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} else {
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throw error;
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}
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});
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} else throw err;
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} else callback();
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});
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// MySQL specific column types
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dataSource.constructor.registerType(function Point() {});
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dataSource.EnumFactory = EnumFactory; // factory for Enums. Note that currently Enums can not be registered.
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};
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exports.MySQL = MySQL;
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/**
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* @constructor
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* Constructor for MySQL connector
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* @param {Object} client The node-mysql client object
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*/
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function MySQL(client) {
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this.name = 'mysql';
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this._models = {};
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this.client = client;
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}
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require('util').inherits(MySQL, jdb.BaseSQL);
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/**
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* Execute the sql statement
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*
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* @param {String} sql The SQL statement
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* @param {Function} [callback] The callback after the SQL statement is executed
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*/
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MySQL.prototype.query = function (sql, callback) {
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if (!this.dataSource.connected) {
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return this.dataSource.on('connected', function () {
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this.query(sql, callback);
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}.bind(this));
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}
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var client = this.client;
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var time = Date.now();
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var log = this.log;
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if (typeof callback !== 'function') throw new Error('callback should be a function');
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this.client.query(sql, function (err, data) {
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if (err && err.message.match(/(^|: )unknown database/i)) {
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var dbName = err.message.match(/(^|: )unknown database '(.*?)'/i)[1];
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client.query('CREATE DATABASE ' + dbName, function (error) {
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if (!error) {
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client.query(sql, callback);
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} else {
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callback(err);
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}
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});
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return;
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}
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if (log) log(sql, time);
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callback(err, data);
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});
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};
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/**
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* Create the data model in MySQL
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*
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* @param {String} model The model name
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* @param {Object} data The model instance data
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* @param {Function} [callback] The callback function
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*/
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MySQL.prototype.create = function (model, data, callback) {
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var fields = this.toFields(model, data);
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var sql = 'INSERT INTO ' + this.tableEscaped(model);
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if (fields) {
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sql += ' SET ' + fields;
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} else {
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sql += ' VALUES ()';
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}
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this.query(sql, function (err, info) {
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callback(err, info && info.insertId);
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});
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};
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/**
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* Update if the model instance exists with the same id or create a new instance
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*
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* @param {String} model The model name
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* @param {Object} data The model instance data
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* @param {Function} [callback] The callback function
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*/
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MySQL.prototype.updateOrCreate = function (model, data, callback) {
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var mysql = this;
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var fieldsNames = [];
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var fieldValues = [];
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var combined = [];
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var props = this._models[model].properties;
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Object.keys(data).forEach(function (key) {
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if (props[key] || mysql.id(model, key)) {
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var k = '`' + key + '`';
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var v;
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if (!mysql.id(model, key)) {
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v = mysql.toDatabase(props[key], data[key]);
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} else {
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v = data[key];
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}
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fieldsNames.push(k);
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fieldValues.push(v);
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if (!mysql.id(model, key)) combined.push(k + ' = ' + v);
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}
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});
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var sql = 'INSERT INTO ' + this.tableEscaped(model);
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sql += ' (' + fieldsNames.join(', ') + ')';
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sql += ' VALUES (' + fieldValues.join(', ') + ')';
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sql += ' ON DUPLICATE KEY UPDATE ' + combined.join(', ');
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this.query(sql, function (err, info) {
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if (!err && info && info.insertId) {
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data.id = info.insertId;
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}
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callback(err, data);
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});
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};
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MySQL.prototype.toFields = function (model, data) {
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var fields = [];
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var props = this._models[model].properties;
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Object.keys(data).forEach(function (key) {
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if (props[key]) {
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var value = this.toDatabase(props[key], data[key]);
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if ('undefined' === typeof value) return;
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fields.push('`' + key.replace(/\./g, '`.`') + '` = ' + value);
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}
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}.bind(this));
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return fields.join(',');
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};
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function dateToMysql(val) {
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return val.getUTCFullYear() + '-' +
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fillZeros(val.getUTCMonth() + 1) + '-' +
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fillZeros(val.getUTCDate()) + ' ' +
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fillZeros(val.getUTCHours()) + ':' +
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fillZeros(val.getUTCMinutes()) + ':' +
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fillZeros(val.getUTCSeconds());
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function fillZeros(v) {
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return v < 10 ? '0' + v : v;
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}
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}
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/*!
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* Convert property name/value to a DB column
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* @param prop
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* @param val
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* @returns {*}
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*/
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MySQL.prototype.toDatabase = function (prop, val) {
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if (val === null) return 'NULL';
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if (val === undefined) return;
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if (val.constructor.name === 'Object') {
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var operator = Object.keys(val)[0]
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val = val[operator];
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if (operator === 'between') {
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return this.toDatabase(prop, val[0]) +
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' AND ' +
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this.toDatabase(prop, val[1]);
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} else if (operator == 'inq' || operator == 'nin') {
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if (!(val.propertyIsEnumerable('length')) && typeof val === 'object' && typeof val.length === 'number') { //if value is array
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for (var i = 0; i < val.length; i++) {
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val[i] = this.client.escape(val[i]);
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}
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return val.join(',');
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} else {
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return val;
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}
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}
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}
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if (!prop) return val;
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if (prop.type.name === 'Number') return Number(val);
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if (prop.type.name === 'Date') {
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if (!val) return 'NULL';
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if (!val.toUTCString) {
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val = new Date(val);
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}
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return '"' + dateToMysql(val) + '"';
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}
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if (prop.type.name == "Boolean") return val ? 1 : 0;
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if (typeof prop.type === 'function') return this.client.escape(prop.type(val));
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return this.client.escape(val.toString());
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};
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/*!
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* Convert the data from database
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* @param model
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* @param data
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* @returns {*}
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*/
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MySQL.prototype.fromDatabase = function (model, data) {
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if (!data) return null;
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var props = this._models[model].properties;
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Object.keys(data).forEach(function (key) {
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var val = data[key];
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if (typeof val === 'undefined' || val === null) {
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return;
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}
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if (props[key]) {
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switch(props[key].type.name) {
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case 'Date':
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val = new Date(val.toString().replace(/GMT.*$/, 'GMT'));
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break;
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case 'Boolean':
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val = Boolean(val);
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break;
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}
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}
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data[key] = val;
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});
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return data;
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};
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MySQL.prototype.escapeName = function (name) {
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return '`' + name.replace(/\./g, '`.`') + '`';
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};
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MySQL.prototype.getColumns = function(model, props){
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var cols = this._models[model].properties;
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if(!cols) {
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return '*';
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}
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var self = this;
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var keys = Object.keys(cols);
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if (Array.isArray(props) && props.length > 0) {
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// No empty array, including all the fields
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keys = props;
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} else if ('object' === typeof props && Object.keys(props).length > 0) {
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// { field1: boolean, field2: boolean ... }
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var included = [];
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var excluded = [];
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keys.forEach(function (k) {
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if (props[k]) {
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included.push(k);
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} else if ((k in props) && !props[k]) {
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excluded.push(k);
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}
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});
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if (included.length > 0) {
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keys = included;
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} else if (excluded.length > 0) {
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excluded.forEach(function (e) {
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var index = keys.indexOf(e);
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keys.splice(index, 1);
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});
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}
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}
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var names = keys.map(function(c) {
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return self.columnEscaped(model, c);
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});
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return names.join(', ');
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};
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function buildWhere(self, model, conds) {
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var props = self._models[model].properties;
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var cs = [];
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Object.keys(conds).forEach(function (key) {
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var keyEscaped = '`' + key.replace(/\./g, '`.`') + '`';
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var val = self.toDatabase(props[key], conds[key]);
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if (conds[key] === null || conds[key] === undefined) {
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cs.push(keyEscaped + ' IS NULL');
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} else if (conds[key] && conds[key].constructor.name === 'Object') {
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var condType = Object.keys(conds[key])[0];
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var sqlCond = keyEscaped;
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if ((condType === 'inq' || condType === 'nin') && val.length === 0) {
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cs.push(condType === 'inq' ? 0 : 1);
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return true;
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}
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switch (condType) {
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case 'gt':
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sqlCond += ' > ';
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break;
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case 'gte':
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sqlCond += ' >= ';
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break;
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case 'lt':
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sqlCond += ' < ';
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break;
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case 'lte':
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sqlCond += ' <= ';
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break;
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case 'between':
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sqlCond += ' BETWEEN ';
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break;
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case 'inq':
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sqlCond += ' IN ';
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break;
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case 'nin':
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sqlCond += ' NOT IN ';
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break;
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case 'neq':
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sqlCond += ' != ';
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break;
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}
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sqlCond += (condType === 'inq' || condType === 'nin') ? '(' + val + ')' : val;
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cs.push(sqlCond);
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} else {
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cs.push(keyEscaped + ' = ' + val);
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}
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});
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if (cs.length === 0) {
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return '';
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}
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return 'WHERE ' + cs.join(' AND ');
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}
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function buildOrderBy(order) {
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if (typeof order === 'string') {
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order = [order];
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}
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return 'ORDER BY ' + order.map(function(o) {
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var t = o.split(/[\s,]+/);
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if (t.length === 1) return '`' + o + '`';
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return '`' + t[0] + '` ' + t[1];
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}).join(', ');
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}
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function buildLimit(limit, offset) {
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return 'LIMIT ' + (offset ? (offset + ', ' + limit) : limit);
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}
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/**
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* Find matching model instances by the filter
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*
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* @param {String} model The model name
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* @param {Object} filter The filter
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* @param {Function} [callback] The callback function
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*/
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MySQL.prototype.all = function all(model, filter, callback) {
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// Order by id if no order is specified
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filter = filter || {};
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if(!filter.order) {
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var idNames = this.idNames(model);
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if(idNames && idNames.length) {
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filter.order = idNames.join(' ');
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}
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}
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var sql = 'SELECT '+ this.getColumns(model, filter.fields) + ' FROM ' + this.tableEscaped(model);
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var self = this;
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if (filter) {
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if (filter.where) {
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sql += ' ' + buildWhere(self, model, filter.where);
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}
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if (filter.order) {
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sql += ' ' + buildOrderBy(filter.order);
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}
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if (filter.limit) {
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sql += ' ' + buildLimit(filter.limit, filter.skip || 0);
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}
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}
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this.query(sql, function (err, data) {
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if (err) {
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return callback(err, []);
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}
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var objs = data.map(function (obj) {
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return self.fromDatabase(model, obj);
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});
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if (filter && filter.include) {
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this._models[model].model.include(objs, filter.include, callback);
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} else {
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callback(null, objs);
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}
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}.bind(this));
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return sql;
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};
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/**
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* Delete instances for the given model
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*
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* @param {String} model The model name
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* @param {Object} [where] The filter for where
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* @param {Function} [callback] The callback function
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*
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*/
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MySQL.prototype.destroyAll = function destroyAll(model, where, callback) {
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if(!callback && 'function' === typeof where) {
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callback = where;
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where = undefined;
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}
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this.query('DELETE FROM '
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+ this.tableEscaped(model) + ' ' + buildWhere(this, model, where || {}), function (err, data) {
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callback && callback(err, data);
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}.bind(this));
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};
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/**
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* Perform autoupdate for the given models
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* @param {String[]} [models] A model name or an array of model names. If not present, apply to all models
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* @param {Function} [cb] The callback function
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*/
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MySQL.prototype.autoupdate = function (models, cb) {
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var self = this;
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var wait = 0;
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if ((!cb) && ('function' === typeof models)) {
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cb = models;
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models = undefined;
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}
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// First argument is a model name
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if ('string' === typeof models) {
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models = [models];
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}
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models = models || Object.keys(this._models);
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models.forEach(function (model) {
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if (model in self._models) {
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wait++;
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self.query('SHOW FIELDS FROM ' + self.tableEscaped(model), function (err, fields) {
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self.query('SHOW INDEXES FROM ' + self.tableEscaped(model), function (err, indexes) {
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if (!err && fields.length) {
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self.alterTable(model, fields, indexes, done);
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} else {
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self.createTable(model, done);
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}
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});
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});
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}
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});
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function done(err) {
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if (err) {
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console.error(err);
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}
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if (--wait === 0 && cb) {
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cb();
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}
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}
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};
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/**
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* Check if the models exist
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* @param {String[]} [models] A model name or an array of model names. If not present, apply to all models
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* @param {Function} [cb] The callback function
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*/
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MySQL.prototype.isActual = function (cb) {
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var ok = false;
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var self = this;
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var wait = 0;
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Object.keys(this._models).forEach(function (model) {
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wait += 1;
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self.query('SHOW FIELDS FROM ' + model, function (err, fields) {
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self.query('SHOW INDEXES FROM ' + model, function (err, indexes) {
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self.alterTable(model, fields, indexes, done, true);
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});
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});
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});
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function done(err, needAlter) {
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if (err) {
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console.log(err);
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}
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ok = ok || needAlter;
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if (--wait === 0 && cb) {
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cb(null, !ok);
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}
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}
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};
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MySQL.prototype.alterTable = function (model, actualFields, actualIndexes, done, checkOnly) {
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var self = this;
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var m = this._models[model];
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|
var propNames = Object.keys(m.properties).filter(function (name) {
|
|
return !!m.properties[name];
|
|
});
|
|
var indexNames = m.settings.indexes ? Object.keys(m.settings.indexes).filter(function (name) {
|
|
return !!m.settings.indexes[name];
|
|
}) : [];
|
|
var sql = [];
|
|
var ai = {};
|
|
|
|
if (actualIndexes) {
|
|
actualIndexes.forEach(function (i) {
|
|
var name = i.Key_name;
|
|
if (!ai[name]) {
|
|
ai[name] = {
|
|
info: i,
|
|
columns: []
|
|
};
|
|
}
|
|
ai[name].columns[i.Seq_in_index - 1] = i.Column_name;
|
|
});
|
|
}
|
|
var aiNames = Object.keys(ai);
|
|
|
|
// change/add new fields
|
|
propNames.forEach(function (propName) {
|
|
if (m.properties[propName] && self.id(model, propName)) return;
|
|
var found;
|
|
if (actualFields) {
|
|
actualFields.forEach(function (f) {
|
|
if (f.Field === propName) {
|
|
found = f;
|
|
}
|
|
});
|
|
}
|
|
|
|
if (found) {
|
|
actualize(propName, found);
|
|
} else {
|
|
sql.push('ADD COLUMN `' + propName + '` ' + self.propertySettingsSQL(model, propName));
|
|
}
|
|
});
|
|
|
|
// drop columns
|
|
if (actualFields) {
|
|
actualFields.forEach(function (f) {
|
|
var notFound = !~propNames.indexOf(f.Field);
|
|
if (m.properties[f.Field] && self.id(model, f.Field)) return;
|
|
if (notFound || !m.properties[f.Field]) {
|
|
sql.push('DROP COLUMN `' + f.Field + '`');
|
|
}
|
|
});
|
|
}
|
|
|
|
// remove indexes
|
|
aiNames.forEach(function (indexName) {
|
|
if (indexName === 'PRIMARY'|| (m.properties[indexName] && self.id(model, indexName))) return;
|
|
if (indexNames.indexOf(indexName) === -1 && !m.properties[indexName] || m.properties[indexName] && !m.properties[indexName].index) {
|
|
sql.push('DROP INDEX `' + indexName + '`');
|
|
} else {
|
|
// first: check single (only type and kind)
|
|
if (m.properties[indexName] && !m.properties[indexName].index) {
|
|
// TODO
|
|
return;
|
|
}
|
|
// second: check multiple indexes
|
|
var orderMatched = true;
|
|
if (indexNames.indexOf(indexName) !== -1) {
|
|
m.settings.indexes[indexName].columns.split(/,\s*/).forEach(function (columnName, i) {
|
|
if (ai[indexName].columns[i] !== columnName) orderMatched = false;
|
|
});
|
|
}
|
|
if (!orderMatched) {
|
|
sql.push('DROP INDEX `' + indexName + '`');
|
|
delete ai[indexName];
|
|
}
|
|
}
|
|
});
|
|
|
|
// add single-column indexes
|
|
propNames.forEach(function (propName) {
|
|
var i = m.properties[propName].index;
|
|
if (!i) {
|
|
return;
|
|
}
|
|
var found = ai[propName] && ai[propName].info;
|
|
if (!found) {
|
|
var type = '';
|
|
var kind = '';
|
|
if (i.type) {
|
|
type = 'USING ' + i.type;
|
|
}
|
|
if (i.kind) {
|
|
// kind = i.kind;
|
|
}
|
|
if (kind && type) {
|
|
sql.push('ADD ' + kind + ' INDEX `' + propName + '` (`' + propName + '`) ' + type);
|
|
} else {
|
|
sql.push('ADD ' + kind + ' INDEX `' + propName + '` ' + type + ' (`' + propName + '`) ');
|
|
}
|
|
}
|
|
});
|
|
|
|
// add multi-column indexes
|
|
indexNames.forEach(function (indexName) {
|
|
var i = m.settings.indexes[indexName];
|
|
var found = ai[indexName] && ai[indexName].info;
|
|
if (!found) {
|
|
var type = '';
|
|
var kind = '';
|
|
if (i.type) {
|
|
type = 'USING ' + i.type;
|
|
}
|
|
if (i.kind) {
|
|
kind = i.kind;
|
|
}
|
|
if (kind && type) {
|
|
sql.push('ADD ' + kind + ' INDEX `' + indexName + '` (' + i.columns + ') ' + type);
|
|
} else {
|
|
sql.push('ADD ' + kind + ' INDEX ' + type + ' `' + indexName + '` (' + i.columns + ')');
|
|
}
|
|
}
|
|
});
|
|
|
|
if (sql.length) {
|
|
var query = 'ALTER TABLE ' + self.tableEscaped(model) + ' ' + sql.join(',\n');
|
|
if (checkOnly) {
|
|
done(null, true, {statements: sql, query: query});
|
|
} else {
|
|
this.query(query, done);
|
|
}
|
|
} else {
|
|
done();
|
|
}
|
|
|
|
function actualize(propName, oldSettings) {
|
|
var newSettings = m.properties[propName];
|
|
if (newSettings && changed(newSettings, oldSettings)) {
|
|
sql.push('CHANGE COLUMN `' + propName + '` `' + propName + '` ' + self.propertySettingsSQL(model, propName));
|
|
}
|
|
}
|
|
|
|
function changed(newSettings, oldSettings) {
|
|
if (oldSettings.Null === 'YES') { // Used to allow null and does not now.
|
|
if(newSettings.allowNull === false) return true;
|
|
if(newSettings.null === false) return true;
|
|
}
|
|
if (oldSettings.Null === 'NO') { // Did not allow null and now does.
|
|
if(newSettings.allowNull === true) return true;
|
|
if(newSettings.null === true) return true;
|
|
if(newSettings.null === undefined && newSettings.allowNull === undefined) return true;
|
|
}
|
|
|
|
if (oldSettings.Type.toUpperCase() !== datatype(newSettings).toUpperCase()) return true;
|
|
return false;
|
|
}
|
|
};
|
|
|
|
MySQL.prototype.propertiesSQL = function (model) {
|
|
var self = this;
|
|
var sql = ['`id` INT(11) NOT NULL AUTO_INCREMENT PRIMARY KEY'];
|
|
Object.keys(this._models[model].properties).forEach(function (prop) {
|
|
if (self.id(model, prop)) return;
|
|
sql.push('`' + prop + '` ' + self.propertySettingsSQL(model, prop));
|
|
});
|
|
// Declared in model index property indexes.
|
|
Object.keys(this._models[model].properties).forEach(function (prop) {
|
|
var i = self._models[model].properties[prop].index;
|
|
if (i) {
|
|
sql.push(self.singleIndexSettingsSQL(model, prop));
|
|
}
|
|
});
|
|
// Settings might not have an indexes property.
|
|
var dxs = this._models[model].settings.indexes;
|
|
if(dxs){
|
|
Object.keys(this._models[model].settings.indexes).forEach(function(prop){
|
|
sql.push(self.indexSettingsSQL(model, prop));
|
|
});
|
|
}
|
|
return sql.join(',\n ');
|
|
};
|
|
|
|
MySQL.prototype.singleIndexSettingsSQL = function (model, prop) {
|
|
// Recycled from alterTable single indexes above, more or less.
|
|
var i = this._models[model].properties[prop].index;
|
|
var type = '';
|
|
var kind = '';
|
|
if (i.type) {
|
|
type = 'USING ' + i.type;
|
|
}
|
|
if (i.kind) {
|
|
kind = i.kind;
|
|
}
|
|
if (kind && type) {
|
|
return (kind + ' INDEX `' + prop + '` (`' + prop + '`) ' + type);
|
|
} else {
|
|
return (kind + ' INDEX `' + prop + '` ' + type + ' (`' + prop + '`) ');
|
|
}
|
|
};
|
|
|
|
MySQL.prototype.indexSettingsSQL = function (model, prop) {
|
|
// Recycled from alterTable multi-column indexes above, more or less.
|
|
var i = this._models[model].settings.indexes[prop];
|
|
var type = '';
|
|
var kind = '';
|
|
if (i.type) {
|
|
type = 'USING ' + i.type;
|
|
}
|
|
if (i.kind) {
|
|
kind = i.kind;
|
|
}
|
|
if (kind && type) {
|
|
return (kind + ' INDEX `' + prop + '` (' + i.columns + ') ' + type);
|
|
} else {
|
|
return (kind + ' INDEX ' + type + ' `' + prop + '` (' + i.columns + ')');
|
|
}
|
|
};
|
|
|
|
MySQL.prototype.propertySettingsSQL = function (model, prop) {
|
|
var p = this._models[model].properties[prop];
|
|
var line = datatype(p) + ' ' +
|
|
(p.allowNull === false || p['null'] === false ? 'NOT NULL' : 'NULL');
|
|
return line;
|
|
};
|
|
|
|
function datatype(p) {
|
|
var dt = '';
|
|
switch (p.type.name) {
|
|
default:
|
|
case 'String':
|
|
case 'JSON':
|
|
dt = columnType(p, 'VARCHAR');
|
|
dt = stringOptionsByType(p, dt);
|
|
break;
|
|
case 'Text':
|
|
dt = columnType(p, 'TEXT');
|
|
dt = stringOptionsByType(p, dt);
|
|
break;
|
|
case 'Number':
|
|
dt = columnType(p, 'INT');
|
|
dt = numericOptionsByType(p, dt);
|
|
break;
|
|
case 'Date':
|
|
dt = columnType(p, 'DATETIME'); // Currently doesn't need options.
|
|
break;
|
|
case 'Boolean':
|
|
dt = 'TINYINT(1)';
|
|
break;
|
|
case 'Point':
|
|
dt = 'POINT';
|
|
break;
|
|
case 'Enum':
|
|
dt = 'ENUM(' + p.type._string + ')';
|
|
dt = stringOptions(p, dt); // Enum columns can have charset/collation.
|
|
break;
|
|
}
|
|
return dt;
|
|
}
|
|
|
|
function columnType(p, defaultType) {
|
|
var dt = defaultType;
|
|
if(p.dataType){
|
|
dt = String(p.dataType);
|
|
}
|
|
return dt;
|
|
}
|
|
|
|
function stringOptionsByType(p, dt) {
|
|
switch (dt.toLowerCase()) {
|
|
default:
|
|
case 'varchar':
|
|
case 'char':
|
|
dt += '(' + (p.limit || 255) + ')';
|
|
break;
|
|
|
|
case 'text':
|
|
case 'tinytext':
|
|
case 'mediumtext':
|
|
case 'longtext':
|
|
|
|
break;
|
|
}
|
|
dt = stringOptions(p, dt);
|
|
return dt;
|
|
}
|
|
|
|
function stringOptions(p, dt){
|
|
if(p.charset){
|
|
dt += " CHARACTER SET " + p.charset;
|
|
}
|
|
if(p.collation){
|
|
dt += " COLLATE " + p.collation;
|
|
}
|
|
return dt;
|
|
}
|
|
|
|
function numericOptionsByType(p, dt) {
|
|
switch (dt.toLowerCase()) {
|
|
default:
|
|
case 'tinyint':
|
|
case 'smallint':
|
|
case 'mediumint':
|
|
case 'int':
|
|
case 'integer':
|
|
case 'bigint':
|
|
dt = integerOptions(p, dt);
|
|
break;
|
|
|
|
case 'decimal':
|
|
case 'numeric':
|
|
dt = fixedPointOptions(p, dt);
|
|
break;
|
|
|
|
case 'float':
|
|
case 'double':
|
|
dt = floatingPointOptions(p, dt);
|
|
break;
|
|
}
|
|
dt = unsigned(p, dt);
|
|
return dt;
|
|
}
|
|
|
|
function floatingPointOptions(p, dt) {
|
|
var precision = 16;
|
|
var scale = 8;
|
|
if(p.precision){
|
|
precision = Number(p.precision);
|
|
}
|
|
if(p.scale){
|
|
scale = Number(p.scale);
|
|
}
|
|
if (p.precision && p.scale) {
|
|
dt += '(' + precision + ',' + scale + ')';
|
|
} else if(p.precision){
|
|
dt += '(' + precision + ')';
|
|
}
|
|
return dt;
|
|
}
|
|
|
|
/* @TODO: Change fixed point to use an arbitrary precision arithmetic library. */
|
|
/* Currently fixed point will lose precision because it's turned to non-fixed in */
|
|
/* JS. Also, defaulting column to (9,2) and not allowing non-specified 'DECIMAL' */
|
|
/* declaration which would default to DECIMAL(10,0). Instead defaulting to (9,2). */
|
|
function fixedPointOptions(p, dt) {
|
|
var precision = 9;
|
|
var scale = 2;
|
|
if(p.precision){
|
|
precision = Number(p.precision);
|
|
}
|
|
if(p.scale){
|
|
scale = Number(p.scale);
|
|
}
|
|
dt += '(' + precision + ',' + scale + ')';
|
|
return dt;
|
|
}
|
|
|
|
function integerOptions(p, dt) {
|
|
var tmp = 0;
|
|
if (p.display || p.limit) {
|
|
tmp = Number(p.display || p.limit);
|
|
}
|
|
if(tmp > 0){
|
|
dt += '(' + tmp + ')';
|
|
} else if(p.unsigned){
|
|
switch (dt.toLowerCase()) {
|
|
default:
|
|
case 'int':
|
|
dt += '(10)';
|
|
break;
|
|
case 'mediumint':
|
|
dt += '(8)';
|
|
break;
|
|
case 'smallint':
|
|
dt += '(5)';
|
|
break;
|
|
case 'tinyint':
|
|
dt += '(3)';
|
|
break;
|
|
case 'bigint':
|
|
dt += '(20)';
|
|
break;
|
|
}
|
|
} else {
|
|
switch (dt.toLowerCase()) {
|
|
default:
|
|
case 'int':
|
|
dt += '(11)';
|
|
break;
|
|
case 'mediumint':
|
|
dt += '(9)';
|
|
break;
|
|
case 'smallint':
|
|
dt += '(6)';
|
|
break;
|
|
case 'tinyint':
|
|
dt += '(4)';
|
|
break;
|
|
case 'bigint':
|
|
dt += '(20)';
|
|
break;
|
|
}
|
|
}
|
|
return dt;
|
|
}
|
|
|
|
function unsigned(p, dt){
|
|
if (p.unsigned) {
|
|
dt += ' UNSIGNED';
|
|
}
|
|
return dt;
|
|
}
|
|
|
|
require('./discovery')(MySQL);
|
|
|