knex/lib/dialects/mysql/formatter.js

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'use strict';
// MySQL Formatter
// ------
module.exports = function(client) {
var Formatter = require('../../formatter');
var inherits = require('inherits');
// The "formatter" is used to ensure all output is properly
// escaped & parameterized.
function Formatter_MySQL() {
this.client = client;
Formatter.apply(this, arguments);
}
inherits(Formatter_MySQL, Formatter);
Formatter_MySQL.prototype.operators = [
'=', '<', '>', '<=', '>=', '<>', '!=',
'like', 'not like', 'between', 'ilike',
'&', '|', '^', '<<', '>>',
'rlike', 'regexp', 'not regexp'
];
// Wraps a value (column, tableName) with the correct ticks.
Formatter_MySQL.prototype.wrapValue = function(value) {
return (value !== '*' ? '`' + value + '`' : '*');
};
// Memoize the calls to "wrap" for a little extra perf.
var wrapperMemo = (function(){
var memo = Object.create(null);
return function(key) {
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if (memo[key] === void 0) {
memo[key] = this._wrapString(key);
}
return memo[key];
};
}());
Formatter_MySQL.prototype._wrap = wrapperMemo;
// Assign the formatter to the the client.
client.Formatter = Formatter_MySQL;
};