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1<?php
2
3namespace BO\Zmsdb\Query\Builder;
4
5/**
6 * Expression
7 *
8 * This class serves as a way of passing SQL expressions into a query
9 * thereby marking them exempt from quotation by the Dialect (either field or table).
10 *
11 * It goes without saying, expressions are an SQL injection vulnerability. ONLY
12 * use them on data you 100% trust. And seriously reconsider trusting it.
13 *
14 * @package     BO\Zmsdb\Query\Builder
15 * @author      Alex Gisby<alex@solution10.com>
16 * @license     MIT
17 */
18class Expression implements ExpressionInterface
19{
20    /**
21     * @var     string
22     */
23    protected $expression;
24
25    /**
26     * Pass in the expression you want exempted.
27     *
28     * @param   string  $exp
29     */
30    public function __construct($exp)
31    {
32        $this->expression = $exp;
33    }
34
35    /**
36     * Returns this expression as a string to make concatenation easier.
37     *
38     * @return  string
39     */
40    public function __toString()
41    {
42        return $this->expression;
43    }
44}