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<?php declare(strict_types=1); namespace Doctrine\ORM\Query\AST\Functions; use Doctrine\ORM\Query\AST\PathExpression; use Doctrine\ORM\Query\Parser; use Doctrine\ORM\Query\QueryException; use Doctrine\ORM\Query\SqlWalker; use Doctrine\ORM\Query\TokenType; use function assert; use function reset; use function sprintf; /** * "IDENTITY" "(" SingleValuedAssociationPathExpression {"," string} ")" * * @link www.doctrine-project.org */ class IdentityFunction extends FunctionNode { /** @var PathExpression */ public $pathExpression; /** @var string|null */ public $fieldMapping; /** * {@inheritDoc} */ public function getSql(SqlWalker $sqlWalker) { assert($this->pathExpression->field !== null); $entityManager = $sqlWalker->getEntityManager(); $platform = $entityManager->getConnection()->getDatabasePlatform(); $quoteStrategy = $entityManager->getConfiguration()->getQuoteStrategy(); $dqlAlias = $this->pathExpression->identificationVariable; $assocField = $this->pathExpression->field; $assoc = $sqlWalker->getMetadataForDqlAlias($dqlAlias)->associationMappings[$assocField]; $targetEntity = $entityManager->getClassMetadata($assoc['targetEntity']); $joinColumn = reset($assoc['joinColumns']); if ($this->fieldMapping !== null) { if (! isset($targetEntity->fieldMappings[$this->fieldMapping])) { throw new QueryException(sprintf('Undefined reference field mapping "%s"', $this->fieldMapping)); } $field = $targetEntity->fieldMappings[$this->fieldMapping]; $joinColumn = null; foreach ($assoc['joinColumns'] as $mapping) { if ($mapping['referencedColumnName'] === $field['columnName']) { $joinColumn = $mapping; break; } } if ($joinColumn === null) { throw new QueryException(sprintf('Unable to resolve the reference field mapping "%s"', $this->fieldMapping)); } } // The table with the relation may be a subclass, so get the table name from the association definition $tableName = $entityManager->getClassMetadata($assoc['sourceEntity'])->getTableName(); $tableAlias = $sqlWalker->getSQLTableAlias($tableName, $dqlAlias); $columnName = $quoteStrategy->getJoinColumnName($joinColumn, $targetEntity, $platform); return $tableAlias . '.' . $columnName; } /** * {@inheritDoc} */ public function parse(Parser $parser) { $parser->match(TokenType::T_IDENTIFIER); $parser->match(TokenType::T_OPEN_PARENTHESIS); $this->pathExpression = $parser->SingleValuedAssociationPathExpression(); if ($parser->getLexer()->isNextToken(TokenType::T_COMMA)) { $parser->match(TokenType::T_COMMA); $parser->match(TokenType::T_STRING); $token = $parser->getLexer()->token; assert($token !== null); $this->fieldMapping = $token->value; } $parser->match(TokenType::T_CLOSE_PARENTHESIS); } }
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