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1 | <?php |
2 | ||
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3 | /* |
4 | +--------------------------------------------------------------------+ | |
41498ac5 | 5 | | Copyright CiviCRM LLC. All rights reserved. | |
380f3545 | 6 | | | |
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7 | | This work is published under the GNU AGPLv3 license with some | |
8 | | permitted exceptions and without any warranty. For full license | | |
9 | | and copyright information, see https://civicrm.org/licensing | | |
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10 | +--------------------------------------------------------------------+ |
11 | */ | |
12 | ||
13 | /** | |
14 | * | |
15 | * @package CRM | |
ca5cec67 | 16 | * @copyright CiviCRM LLC https://civicrm.org/licensing |
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17 | */ |
18 | ||
19 | ||
19b53e5b C |
20 | namespace Civi\Api4\Service\Schema; |
21 | ||
22 | use Civi\Api4\Query\Api4SelectQuery; | |
23 | ||
24 | class Joiner { | |
25 | /** | |
26 | * @var SchemaMap | |
27 | */ | |
28 | protected $schemaMap; | |
29 | ||
30 | /** | |
31 | * @var \Civi\Api4\Service\Schema\Joinable\Joinable[][] | |
32 | */ | |
33 | protected $cache = []; | |
34 | ||
35 | /** | |
36 | * @param SchemaMap $schemaMap | |
37 | */ | |
38 | public function __construct(SchemaMap $schemaMap) { | |
39 | $this->schemaMap = $schemaMap; | |
40 | } | |
41 | ||
42 | /** | |
43 | * @param \Civi\Api4\Query\Api4SelectQuery $query | |
44 | * The query object to do the joins on | |
45 | * @param string $joinPath | |
46 | * A path of aliases in dot notation, e.g. contact.phone | |
47 | * @param string $side | |
48 | * Can be LEFT or INNER | |
49 | * | |
50 | * @throws \Exception | |
51 | * @return \Civi\Api4\Service\Schema\Joinable\Joinable[] | |
52 | * The path used to make the join | |
53 | */ | |
54 | public function join(Api4SelectQuery $query, $joinPath, $side = 'LEFT') { | |
55 | $fullPath = $this->getPath($query->getFrom(), $joinPath); | |
56 | $baseTable = $query::MAIN_TABLE_ALIAS; | |
57 | ||
58 | foreach ($fullPath as $link) { | |
59 | $target = $link->getTargetTable(); | |
60 | $alias = $link->getAlias(); | |
77fdabbf | 61 | $bao = \CRM_Core_DAO_AllCoreTables::getBAOClassName(\CRM_Core_DAO_AllCoreTables::getClassForTable($target)); |
e3d9e6ac CW |
62 | $conditions = $link->getConditionsForJoin($baseTable); |
63 | // Custom fields do not have a bao, and currently do not have field-specific ACLs | |
64 | if ($bao) { | |
65 | $conditions = array_merge($conditions, $query->getAclClause($alias, $bao, explode('.', $joinPath))); | |
66 | } | |
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67 | |
68 | $query->join($side, $target, $alias, $conditions); | |
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69 | |
70 | $baseTable = $link->getAlias(); | |
71 | } | |
72 | ||
73 | return $fullPath; | |
74 | } | |
75 | ||
76 | /** | |
334bebdd CW |
77 | * Determines if path string points to a simple n-1 join that can be automatically added |
78 | * | |
79 | * @param string $baseTable | |
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80 | * @param $joinPath |
81 | * | |
82 | * @return bool | |
83 | */ | |
334bebdd CW |
84 | public function canAutoJoin($baseTable, $joinPath) { |
85 | try { | |
86 | $path = $this->getPath($baseTable, $joinPath); | |
87 | foreach ($path as $joinable) { | |
88 | if ($joinable->getJoinType() === $joinable::JOIN_TYPE_ONE_TO_MANY) { | |
89 | return FALSE; | |
90 | } | |
91 | } | |
92 | return TRUE; | |
93 | } | |
94 | catch (\Exception $e) { | |
95 | return FALSE; | |
96 | } | |
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97 | } |
98 | ||
99 | /** | |
100 | * @param string $baseTable | |
101 | * @param string $joinPath | |
102 | * | |
334bebdd | 103 | * @return \Civi\Api4\Service\Schema\Joinable\Joinable[] |
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104 | * @throws \Exception |
105 | */ | |
106 | protected function getPath($baseTable, $joinPath) { | |
107 | $cacheKey = sprintf('%s.%s', $baseTable, $joinPath); | |
108 | if (!isset($this->cache[$cacheKey])) { | |
109 | $stack = explode('.', $joinPath); | |
110 | $fullPath = []; | |
111 | ||
112 | foreach ($stack as $key => $targetAlias) { | |
113 | $links = $this->schemaMap->getPath($baseTable, $targetAlias); | |
114 | ||
115 | if (empty($links)) { | |
116 | throw new \Exception(sprintf('Cannot join %s to %s', $baseTable, $targetAlias)); | |
117 | } | |
118 | else { | |
119 | $fullPath = array_merge($fullPath, $links); | |
120 | $lastLink = end($links); | |
121 | $baseTable = $lastLink->getTargetTable(); | |
122 | } | |
123 | } | |
124 | ||
125 | $this->cache[$cacheKey] = $fullPath; | |
126 | } | |
127 | ||
128 | return $this->cache[$cacheKey]; | |
129 | } | |
130 | ||
131 | } |