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<?php |
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namespace BfwSql\Queries; |
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use \BfwSql\SqlConnect; |
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/** |
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* Class to write SELECT queries |
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* |
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* @package bfw-sql |
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* @author Vermeulen Maxime <[email protected]> |
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* @version 2.0 |
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* |
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* @method \BfwSql\Queries\Select subQuery(string $shortcut, string|\BfwSql\Queries\AbstractQuery $subQuery) |
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* @method \BfwSql\Queries\Select from(string|array $nameInfos, string|array|null $columns=null) |
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* @method \BfwSql\Queries\Select fromColumns(array $columns) |
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* @method \BfwSql\Queries\Select order(string $expr, string|null $sort = 'ASC') |
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* @method \BfwSql\Queries\Select limit([int $offset,] int $rowCount) |
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* @method \BfwSql\Queries\Select group(string $expr) |
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*/ |
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class Select extends AbstractQuery |
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{ |
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use JoinTrait; |
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/** |
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* {@inheritdoc} |
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*/ |
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protected $requestType = 'select'; |
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/** |
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* Constructor |
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* |
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* @param \BfwSql\SqlConnect $sqlConnect Instance of SGBD connexion |
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* @param string $returnType PHP type used for return result |
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*/ |
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public function __construct(SqlConnect $sqlConnect, string $returnType) |
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{ |
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parent::__construct($sqlConnect); |
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$usedClass = \BfwSql\UsedClass::getInstance(); |
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$executerClass = $usedClass->obtainClassNameToUse('ExecutersSelect'); |
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$this->executer = new $executerClass($this); |
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$this->executer->setReturnType($returnType); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function defineQueriesParts() |
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{ |
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parent::defineQueriesParts(); |
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$usedClass = \BfwSql\UsedClass::getInstance(); |
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$subQueryListClass = $usedClass->obtainClassNameToUse('QueriesPartsSubQueryList'); |
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$joinListClass = $usedClass->obtainClassNameToUse('QueriesPartsJoinList'); |
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$orderListClass = $usedClass->obtainClassNameToUse('QueriesPartsOrderList'); |
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$limitClass = $usedClass->obtainClassNameToUse('QueriesPartsLimit'); |
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$commonListClass = $usedClass->obtainClassNameToUse('QueriesPartsCommonList'); |
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$this->queriesParts['subQuery'] = new $subQueryListClass($this); |
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$this->queriesParts['from'] = $this->queriesParts['table']; |
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$this->queriesParts['fromColumns'] = &$this->queriesParts['table']->getColumns(); |
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$this->queriesParts['join'] = new $joinListClass($this); |
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$this->queriesParts['joinLeft'] = new $joinListClass($this); |
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$this->queriesParts['joinRight'] = new $joinListClass($this); |
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$this->queriesParts['order'] = new $orderListClass($this); |
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$this->queriesParts['limit'] = new $limitClass($this); |
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$this->queriesParts['group'] = new $commonListClass($this); |
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$this->joinDefinePrefix(); |
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$this->queriesParts['group']->setSeparator(','); |
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$this->queriesParts['group']->setPartPrefix('GROUP BY'); |
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$this->queriesParts['table']->createColumnInstance(); |
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$this->querySgbd->disableQueriesParts($this->queriesParts); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function obtainGenerateOrder(): array |
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{ |
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return [ |
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'select' => [ |
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'prefix' => 'SELECT', |
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'callback' => [$this, 'generateSelect'], |
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'canBeEmpty' => false |
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], |
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'from' => [ |
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'prefix' => 'FROM', |
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'canBeEmpty' => false |
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], |
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'join' => [], |
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'joinLeft' => [], |
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'joinRight' => [], |
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'where' => [], |
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'group' => [], |
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'order' => [], |
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'limit' => [] |
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]; |
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} |
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/** |
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* Callback used by assembleRequestPart method |
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* Generate the sql query for the SELECT part who contains all columns to |
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* return and all sub-queries defined. |
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* |
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* @return string |
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*/ |
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protected function generateSelect(): string |
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{ |
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$sqlParts = $this->queriesParts['from']->getColumns()->generate(); |
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$joinKeyList = ['join', 'joinLeft', 'joinRight']; |
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foreach ($joinKeyList as $joinKeyName) { |
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foreach ($this->queriesParts[$joinKeyName] as $join) { |
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$joinSql = $join->getColumns()->generate(); |
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if (empty($joinSql)) { |
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continue; |
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} |
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if ($sqlParts !== '') { |
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$sqlParts .= ','; |
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} |
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$sqlParts .= $joinSql; |
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} |
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} |
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$sqlSubQueries = $this->queriesParts['subQuery']->generate(); |
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if ($sqlParts !== '' && $sqlSubQueries !== '') { |
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$sqlParts .= ','; |
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} |
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$sqlParts .= $sqlSubQueries; |
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return $sqlParts; |
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} |
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} |
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bulton-fr /
bfw-sql
