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20 namespace Doctrine\ORM\Query\AST\Functions;
22 use Doctrine\ORM\Query\Lexer;
25 * "SIZE" "(" CollectionValuedPathExpression ")"
28 * @link www.doctrine-project.org
30 * @author Guilherme Blanco <guilhermeblanco@hotmail.com>
31 * @author Jonathan Wage <jonwage@gmail.com>
32 * @author Roman Borschel <roman@code-factory.org>
33 * @author Benjamin Eberlei <kontakt@beberlei.de>
35 class SizeFunction extends FunctionNode
37 public $collectionPathExpression;
41 * @todo If the collection being counted is already joined, the SQL can be simpler (more efficient).
43 public function getSql(\Doctrine\ORM\Query\SqlWalker $sqlWalker)
45 $platform = $sqlWalker->getEntityManager()->getConnection()->getDatabasePlatform();
46 $quoteStrategy = $sqlWalker->getEntityManager()->getConfiguration()->getQuoteStrategy();
47 $dqlAlias = $this->collectionPathExpression->identificationVariable;
48 $assocField = $this->collectionPathExpression->field;
50 $qComp = $sqlWalker->getQueryComponent($dqlAlias);
51 $class = $qComp['metadata'];
52 $assoc = $class->associationMappings[$assocField];
53 $sql = 'SELECT COUNT(*) FROM ';
55 if ($assoc['type'] == \Doctrine\ORM\Mapping\ClassMetadata::ONE_TO_MANY) {
56 $targetClass = $sqlWalker->getEntityManager()->getClassMetadata($assoc['targetEntity']);
57 $targetTableAlias = $sqlWalker->getSQLTableAlias($targetClass->getTableName());
58 $sourceTableAlias = $sqlWalker->getSQLTableAlias($class->getTableName(), $dqlAlias);
60 $sql .= $quoteStrategy->getTableName($targetClass, $platform) . ' ' . $targetTableAlias . ' WHERE ';
62 $owningAssoc = $targetClass->associationMappings[$assoc['mappedBy']];
66 foreach ($owningAssoc['targetToSourceKeyColumns'] as $targetColumn => $sourceColumn) {
67 if ($first) $first = false; else $sql .= ' AND ';
69 $sql .= $targetTableAlias . '.' . $sourceColumn
71 . $sourceTableAlias . '.' . $quoteStrategy->getColumnName($class->fieldNames[$targetColumn], $class, $platform);
73 } else { // many-to-many
74 $targetClass = $sqlWalker->getEntityManager()->getClassMetadata($assoc['targetEntity']);
76 $owningAssoc = $assoc['isOwningSide'] ? $assoc : $targetClass->associationMappings[$assoc['mappedBy']];
77 $joinTable = $owningAssoc['joinTable'];
80 $joinTableAlias = $sqlWalker->getSQLTableAlias($joinTable['name']);
81 $sourceTableAlias = $sqlWalker->getSQLTableAlias($class->getTableName(), $dqlAlias);
83 // join to target table
84 $sql .= $quoteStrategy->getJoinTableName($owningAssoc, $targetClass, $platform) . ' ' . $joinTableAlias . ' WHERE ';
86 $joinColumns = $assoc['isOwningSide']
87 ? $joinTable['joinColumns']
88 : $joinTable['inverseJoinColumns'];
92 foreach ($joinColumns as $joinColumn) {
93 if ($first) $first = false; else $sql .= ' AND ';
95 $sourceColumnName = $quoteStrategy->getColumnName(
96 $class->fieldNames[$joinColumn['referencedColumnName']], $class, $platform
99 $sql .= $joinTableAlias . '.' . $joinColumn['name']
101 . $sourceTableAlias . '.' . $sourceColumnName;
105 return '(' . $sql . ')';
111 public function parse(\Doctrine\ORM\Query\Parser $parser)
113 $parser->match(Lexer::T_IDENTIFIER);
114 $parser->match(Lexer::T_OPEN_PARENTHESIS);
116 $this->collectionPathExpression = $parser->CollectionValuedPathExpression();
118 $parser->match(Lexer::T_CLOSE_PARENTHESIS);