1<?php
2/*
3 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
4 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
5 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
6 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
7 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
8 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
9 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
10 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
11 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
12 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
13 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
14 *
15 * This software consists of voluntary contributions made by many individuals
16 * and is licensed under the MIT license. For more information, see
17 * <http://www.doctrine-project.org>.
18 */
19
20namespace Doctrine\ORM\Query\AST;
21
22/**
23 * CoalesceExpression ::= "COALESCE" "(" ScalarExpression {"," ScalarExpression}* ")"
24 *
25 * @since   2.1
26 *
27 * @link    www.doctrine-project.org
28 * @author  Benjamin Eberlei <kontakt@beberlei.de>
29 * @author  Guilherme Blanco <guilhermeblanco@hotmail.com>
30 * @author  Jonathan Wage <jonwage@gmail.com>
31 * @author  Roman Borschel <roman@code-factory.org>
32 */
33class CoalesceExpression extends Node
34{
35    /**
36     * @var array
37     */
38    public $scalarExpressions = array();
39
40    /**
41     * @param array $scalarExpressions
42     */
43    public function __construct(array $scalarExpressions)
44    {
45        $this->scalarExpressions  = $scalarExpressions;
46    }
47
48    /**
49     * {@inheritdoc}
50     */
51    public function dispatch($sqlWalker)
52    {
53        return $sqlWalker->walkCoalesceExpression($this);
54    }
55}
56