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<?php |
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/** |
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* Phossa Project |
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* |
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* PHP version 5.4 |
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* |
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* @category Library |
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* @package Phossa2\Query |
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* @copyright Copyright (c) 2016 phossa.com |
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* @license http://mit-license.org/ MIT License |
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* @link http://www.phossa.com/ |
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*/ |
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/*# declare(strict_types=1); */ |
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namespace Phossa2\Query\Dialect\Mysql; |
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use Phossa2\Query\Traits\StatementAbstract; |
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use Phossa2\Query\Traits\Clause\LimitTrait; |
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use Phossa2\Query\Traits\Clause\ClauseTrait; |
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use Phossa2\Query\Traits\Clause\OrderByTrait; |
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use Phossa2\Query\Interfaces\Statement\UnionStatementInterface; |
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use Phossa2\Query\Interfaces\Statement\SelectStatementInterface; |
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use Phossa2\Query\Interfaces\BuilderInterface; |
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/** |
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* Union |
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* |
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* @package Phossa2\Query |
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* @author Hong Zhang <[email protected]> |
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* @see StatementAbstract |
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* @see UnionStatementInterface |
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* @version 2.0.0 |
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* @since 2.0.0 added |
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*/ |
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class Union extends StatementAbstract implements UnionStatementInterface |
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{ |
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use ClauseTrait, OrderByTrait, LimitTrait; |
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/** |
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* {@inheritDoc} |
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*/ |
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protected $configs = [ |
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'UNION' => '', |
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'ORDERBY' => 'ORDER BY', |
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'LIMIT' => 'LIMIT', |
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]; |
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/** |
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* @param BuilderInterface $builder |
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* @access public |
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*/ |
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public function __construct(BuilderInterface $builder) |
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{ |
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parent::__construct($builder); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function union(SelectStatementInterface $select) |
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{ |
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return $this->addUnion('UNION', $select); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function unionAll(SelectStatementInterface $select) |
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{ |
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return $this->addUnion('UNION ALL', $select); |
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} |
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/** |
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* Build unioned SELECT |
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* |
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* @param string $prefix |
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* @param array $settings |
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* @return string |
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* @access protected |
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*/ |
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protected function buildUnion( |
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/*# string */ $prefix, |
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array $settings |
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)/*# : string */ { |
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$clause = &$this->getClause('UNION'); |
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$flat = $this->flatSettings($settings); |
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$parts = []; |
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foreach ($clause as $idx => $field) { |
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if ($idx) { // prepend type UNION or UNION ALL |
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$parts[] = $field[1]; |
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} |
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$parts[] = $this->quoteItem($field[0], $flat); |
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} |
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return ltrim($this->joinClause($prefix, '', $parts, $settings)); |
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} |
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/** |
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* @param string $type |
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* @param SelectStatementInterface $select |
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* @return $this |
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* @access protected |
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*/ |
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protected function addUnion( |
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/*# string */ $type, |
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SelectStatementInterface $select |
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) { |
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$clause = &$this->getClause('UNION'); |
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$clause[] = [$select, $type]; |
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return $this; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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protected function getType()/*# : string */ |
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{ |
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return ''; |
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} |
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} |
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phossa2 /
query
