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<?php |
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/** |
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* This file is part of Phuria SQL Builder package. |
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* |
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* Copyright (c) 2016 Beniamin Jonatan Šimko |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace Phuria\SQLBuilder\QueryBuilder\Component; |
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use Phuria\SQLBuilder\JoinType; |
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use Phuria\SQLBuilder\QueryBuilder\BuilderInterface; |
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use Phuria\SQLBuilder\Table\AbstractTable; |
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use Phuria\SQLBuilder\TableFactory\TableFactoryInterface; |
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/** |
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* @author Beniamin Jonatan Šimko <[email protected]> |
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*/ |
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trait JoinComponentTrait |
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{ |
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/** |
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* @var array $joinTables |
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*/ |
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private $joinTables = []; |
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/** |
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* @return TableFactoryInterface |
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*/ |
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abstract protected function getTableFactory(); |
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/** |
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* @return BuilderInterface |
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*/ |
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abstract public function getQueryBuilder(); |
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/** |
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* @param string $joinType |
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* @param mixed $table |
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* @param string|null $alias |
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* @param string|null $joinOn |
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* |
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* @return AbstractTable |
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*/ |
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private function doJoin($joinType, $table, $alias = null, $joinOn = null) |
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{ |
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$this->joinTables[] = $table = $this->getTableFactory()->createNewTable($table, $this->getQueryBuilder()); |
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$table->setJoinType($joinType); |
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if ($alias) { |
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$table->setAlias($alias); |
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} |
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if ($joinOn) { |
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$table->joinOn($joinOn); |
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} |
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return $table; |
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} |
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/** |
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* @param mixed $table |
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* @param string|null $alias |
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* @param string|null $joinOn |
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* |
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* @return AbstractTable |
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*/ |
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public function join($table, $alias = null, $joinOn = null) |
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{ |
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return $this->doJoin(JoinType::JOIN, $table, $alias, $joinOn); |
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} |
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/** |
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* @param mixed $table |
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* @param string|null $alias |
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* @param string|null $joinOn |
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* |
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* @return AbstractTable |
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*/ |
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public function straightJoin($table, $alias = null, $joinOn = null) |
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{ |
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return $this->doJoin(JoinType::STRAIGHT_JOIN, $table, $alias, $joinOn); |
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} |
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/** |
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* @param mixed $table |
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* @param string|null $alias |
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* @param string|null $joinOn |
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* |
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* @return AbstractTable |
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*/ |
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public function crossJoin($table, $alias = null, $joinOn = null) |
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{ |
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return $this->doJoin(JoinType::CROSS_JOIN, $table, $alias, $joinOn); |
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} |
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/** |
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* @param mixed $table |
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* @param string|null $alias |
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* @param string|null $joinOn |
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* |
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* @return AbstractTable |
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*/ |
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public function leftJoin($table, $alias = null, $joinOn = null) |
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{ |
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return $this->doJoin(JoinType::LEFT_JOIN, $table, $alias, $joinOn); |
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} |
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/** |
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* @param mixed $table |
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* @param string|null $alias |
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* @param string|null $joinOn |
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* |
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* @return AbstractTable |
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*/ |
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public function rightJoin($table, $alias = null, $joinOn = null) |
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{ |
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return $this->doJoin(JoinType::RIGHT_JOIN, $table, $alias, $joinOn); |
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} |
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/** |
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* @param mixed $table |
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* @param string|null $alias |
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* @param string|null $joinOn |
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* |
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* @return AbstractTable |
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*/ |
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public function innerJoin($table, $alias = null, $joinOn = null) |
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{ |
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return $this->doJoin(JoinType::INNER_JOIN, $table, $alias, $joinOn); |
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} |
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/** |
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* @return array |
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*/ |
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public function getJoinTables() |
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{ |
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return $this->joinTables; |
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} |
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} |
In PHP, under loose comparison (like
==, or!=, orswitchconditions), values of different types might be equal.For
stringvalues, the empty string''is a special case, in particular the following results might be unexpected: