171 lines
3.6 KiB
JavaScript
171 lines
3.6 KiB
JavaScript
// MySQL Column Compiler
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// -------
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const inherits = require('inherits');
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const ColumnCompiler = require('../../../schema/columncompiler');
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const { isObject } = require('lodash');
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function ColumnCompiler_MySQL() {
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ColumnCompiler.apply(this, arguments);
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this.modifiers = [
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'unsigned',
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'nullable',
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'defaultTo',
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'comment',
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'collate',
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'first',
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'after',
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];
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}
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inherits(ColumnCompiler_MySQL, ColumnCompiler);
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// Types
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// ------
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Object.assign(ColumnCompiler_MySQL.prototype, {
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increments: 'int unsigned not null auto_increment primary key',
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bigincrements: 'bigint unsigned not null auto_increment primary key',
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bigint: 'bigint',
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double(precision, scale) {
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if (!precision) return 'double';
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return `double(${this._num(precision, 8)}, ${this._num(scale, 2)})`;
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},
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integer(length) {
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length = length ? `(${this._num(length, 11)})` : '';
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return `int${length}`;
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},
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mediumint: 'mediumint',
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smallint: 'smallint',
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tinyint(length) {
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length = length ? `(${this._num(length, 1)})` : '';
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return `tinyint${length}`;
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},
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text(column) {
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switch (column) {
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case 'medium':
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case 'mediumtext':
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return 'mediumtext';
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case 'long':
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case 'longtext':
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return 'longtext';
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default:
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return 'text';
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}
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},
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mediumtext() {
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return this.text('medium');
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},
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longtext() {
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return this.text('long');
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},
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enu(allowed) {
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return `enum('${allowed.join("', '")}')`;
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},
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datetime(precision) {
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if (isObject(precision)) {
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({ precision } = precision);
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}
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return typeof precision === 'number'
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? `datetime(${precision})`
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: 'datetime';
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},
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timestamp(precision) {
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if (isObject(precision)) {
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({ precision } = precision);
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}
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return typeof precision === 'number'
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? `timestamp(${precision})`
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: 'timestamp';
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},
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time(precision) {
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if (isObject(precision)) {
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({ precision } = precision);
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}
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return typeof precision === 'number' ? `time(${precision})` : 'time';
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},
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bit(length) {
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return length ? `bit(${this._num(length)})` : 'bit';
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},
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binary(length) {
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return length ? `varbinary(${this._num(length)})` : 'blob';
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},
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json() {
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return 'json';
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},
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jsonb() {
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return 'json';
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},
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// Modifiers
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// ------
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defaultTo(value) {
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// MySQL defaults to null by default, but breaks down if you pass it explicitly
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// Note that in MySQL versions up to 5.7, logic related to updating
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// timestamps when no explicit value is passed is quite insane - https://dev.mysql.com/doc/refman/5.7/en/server-system-variables.html#sysvar_explicit_defaults_for_timestamp
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if (value === null || value === undefined) {
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return;
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}
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if ((this.type === 'json' || this.type === 'jsonb') && isObject(value)) {
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// Default value for json will work only it is an expression
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return `default ('${JSON.stringify(value)}')`;
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}
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const defaultVal = ColumnCompiler_MySQL.super_.prototype.defaultTo.apply(
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this,
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arguments
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);
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if (this.type !== 'blob' && this.type.indexOf('text') === -1) {
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return defaultVal;
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}
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return '';
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},
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unsigned() {
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return 'unsigned';
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},
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comment(comment) {
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if (comment && comment.length > 255) {
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this.client.logger.warn(
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'Your comment is longer than the max comment length for MySQL'
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);
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}
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return comment && `comment '${comment}'`;
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},
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first() {
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return 'first';
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},
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after(column) {
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return `after ${this.formatter.wrap(column)}`;
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},
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collate(collation) {
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return collation && `collate '${collation}'`;
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},
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});
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module.exports = ColumnCompiler_MySQL;
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