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<?php |
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namespace TheCodingMachine\TDBM\QueryFactory\SmartEagerLoad\Query; |
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use Doctrine\DBAL\Connection; |
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use Doctrine\DBAL\Platforms\MySqlPlatform; |
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use Mouf\Database\MagicQuery; |
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use TheCodingMachine\TDBM\QueryFactory\SmartEagerLoad\ManyToOneDataLoader; |
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use TheCodingMachine\TDBM\QueryFactory\SmartEagerLoad\StorageNode; |
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class ManyToOnePartialQuery implements PartialQuery |
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{ |
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/** |
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* @var string |
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*/ |
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private $mainTable; |
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/** |
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* @var string |
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*/ |
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private $key; |
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/** |
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* @var string |
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*/ |
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private $pk; |
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/** |
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* @var PartialQuery |
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*/ |
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private $partialQuery; |
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/** |
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* @var string |
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*/ |
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private $originTableName; |
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/** |
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* @var string |
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*/ |
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private $columnName; |
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public function __construct(PartialQuery $partialQuery, string $originTableName, string $tableName, string $pk, string $columnName) |
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{ |
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// TODO: move this in a separate function. The constructor is called for every bean. |
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$this->partialQuery = $partialQuery; |
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$this->mainTable = $tableName; |
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$this->key = $partialQuery->getKey().'__'.$columnName; |
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$this->pk = $pk; |
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$this->originTableName = $originTableName; |
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$this->columnName = $columnName; |
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} |
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/** |
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* Returns the SQL of the query, starting at the FROM keyword. |
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*/ |
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public function getQueryFrom(): string |
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{ |
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$mysqlPlatform = new MySqlPlatform(); |
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return 'FROM ' .$mysqlPlatform->quoteIdentifier($this->mainTable). |
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' WHERE ' .$mysqlPlatform->quoteIdentifier($this->mainTable).'.'.$mysqlPlatform->quoteIdentifier($this->pk).' IN '. |
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'(SELECT '.$mysqlPlatform->quoteIdentifier($this->originTableName).'.'.$mysqlPlatform->quoteIdentifier($this->columnName).' '.$this->partialQuery->getQueryFrom().')'; |
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} |
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/** |
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* Returns the object in charge of storing the dataloader associated to this query. |
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*/ |
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public function getStorageNode(): StorageNode |
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{ |
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return $this->partialQuery->getStorageNode(); |
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} |
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/** |
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* Returns a key representing the "path" to this query. This is meant to be used as a cache key. |
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*/ |
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public function getKey(): string |
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{ |
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return $this->key; |
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} |
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/** |
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* Registers a dataloader for this query, if needed. |
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*/ |
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public function registerDataLoader(Connection $connection): void |
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{ |
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$storageNode = $this->getStorageNode(); |
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if ($storageNode->hasManyToOneDataLoader($this->key)) { |
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return; |
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} |
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$mysqlPlatform = new MySqlPlatform(); |
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$sql = 'SELECT DISTINCT ' .$mysqlPlatform->quoteIdentifier($this->mainTable).'.* '.$this->getQueryFrom(); |
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if (!$connection->getDatabasePlatform() instanceof MySqlPlatform) { |
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// We need to convert the query from MySQL dialect to something else |
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$sql = $this->getMagicQuery()->buildPreparedStatement($sql); |
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} |
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$storageNode->setManyToOneDataLoader($this->key, new ManyToOneDataLoader($connection, $sql, $this->pk)); |
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} |
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public function getMagicQuery(): MagicQuery |
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{ |
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return $this->partialQuery->getMagicQuery(); |
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} |
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} |
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thecodingmachine /
tdbm
