|
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
|
|
|
|
|
20
|
|
|
namespace Doctrine\ORM\Tools\Pagination; |
|
21
|
|
|
|
|
22
|
|
|
use Doctrine\ORM\Query\TreeWalkerAdapter; |
|
23
|
|
|
use Doctrine\ORM\Query\AST\SelectStatement; |
|
24
|
|
|
use Doctrine\ORM\Query\AST\SelectExpression; |
|
25
|
|
|
use Doctrine\ORM\Query\AST\PathExpression; |
|
26
|
|
|
use Doctrine\ORM\Query\AST\AggregateExpression; |
|
27
|
|
|
|
|
28
|
|
|
/** |
|
29
|
|
|
* Replaces the selectClause of the AST with a COUNT statement. |
|
30
|
|
|
* |
|
31
|
|
|
* @category DoctrineExtensions |
|
32
|
|
|
* @package DoctrineExtensions\Paginate |
|
33
|
|
|
* @author David Abdemoulaie <[email protected]> |
|
34
|
|
|
* @copyright Copyright (c) 2010 David Abdemoulaie (http://hobodave.com/) |
|
35
|
|
|
* @license http://hobodave.com/license.txt New BSD License |
|
36
|
|
|
*/ |
|
37
|
|
|
class CountWalker extends TreeWalkerAdapter |
|
38
|
|
|
{ |
|
39
|
|
|
/** |
|
40
|
|
|
* Distinct mode hint name. |
|
41
|
|
|
*/ |
|
42
|
|
|
const HINT_DISTINCT = 'doctrine_paginator.distinct'; |
|
43
|
|
|
|
|
44
|
|
|
/** |
|
45
|
|
|
* Walks down a SelectStatement AST node, modifying it to retrieve a COUNT. |
|
46
|
|
|
* |
|
47
|
|
|
* @param SelectStatement $AST |
|
48
|
|
|
* |
|
49
|
|
|
* @return void |
|
50
|
|
|
* |
|
51
|
|
|
* @throws \RuntimeException |
|
52
|
|
|
*/ |
|
53
|
10 |
|
public function walkSelectStatement(SelectStatement $AST) |
|
54
|
|
|
{ |
|
55
|
10 |
|
if ($AST->havingClause) { |
|
56
|
|
|
throw new \RuntimeException('Cannot count query that uses a HAVING clause. Use the output walkers for pagination'); |
|
57
|
|
|
} |
|
58
|
|
|
|
|
59
|
10 |
|
$queryComponents = $this->_getQueryComponents(); |
|
60
|
|
|
// Get the root entity and alias from the AST fromClause |
|
61
|
10 |
|
$from = $AST->fromClause->identificationVariableDeclarations; |
|
62
|
|
|
|
|
63
|
10 |
|
if (count($from) > 1) { |
|
64
|
|
|
throw new \RuntimeException("Cannot count query which selects two FROM components, cannot make distinction"); |
|
65
|
|
|
} |
|
66
|
|
|
|
|
67
|
10 |
|
$fromRoot = reset($from); |
|
68
|
10 |
|
$rootAlias = $fromRoot->rangeVariableDeclaration->aliasIdentificationVariable; |
|
69
|
10 |
|
$rootClass = $queryComponents[$rootAlias]['metadata']; |
|
70
|
10 |
|
$identifierFieldName = $rootClass->getSingleIdentifierFieldName(); |
|
71
|
|
|
|
|
72
|
10 |
|
$pathType = PathExpression::TYPE_STATE_FIELD; |
|
73
|
10 |
|
if (isset($rootClass->associationMappings[$identifierFieldName])) { |
|
74
|
1 |
|
$pathType = PathExpression::TYPE_SINGLE_VALUED_ASSOCIATION; |
|
75
|
|
|
} |
|
76
|
|
|
|
|
77
|
10 |
|
$pathExpression = new PathExpression( |
|
78
|
10 |
|
PathExpression::TYPE_STATE_FIELD | PathExpression::TYPE_SINGLE_VALUED_ASSOCIATION, $rootAlias, |
|
79
|
10 |
|
$identifierFieldName |
|
80
|
|
|
); |
|
81
|
10 |
|
$pathExpression->type = $pathType; |
|
82
|
|
|
|
|
83
|
10 |
|
$distinct = $this->_getQuery()->getHint(self::HINT_DISTINCT); |
|
84
|
10 |
|
$AST->selectClause->selectExpressions = [ |
|
85
|
10 |
|
new SelectExpression( |
|
86
|
10 |
|
new AggregateExpression('count', $pathExpression, $distinct), null |
|
87
|
|
|
) |
|
88
|
|
|
]; |
|
89
|
|
|
|
|
90
|
|
|
// ORDER BY is not needed, only increases query execution through unnecessary sorting. |
|
91
|
10 |
|
$AST->orderByClause = null; |
|
92
|
10 |
|
} |
|
93
|
|
|
} |
|
94
|
|
|
|
|
95
|
|
|
|
doctrine /
orm
