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<?php
/**
* @link http://www.yiiframework.com/
* @copyright Copyright (c) 2008 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
namespace yii\db\conditions;
use yii\db\ExpressionBuilderInterface;
use yii\db\ExpressionBuilderTrait;
use yii\db\ExpressionInterface;
/**
* Class ConjunctionConditionBuilder builds objects of abstract class [[ConjunctionCondition]]
*
* @author Dmytro Naumenko <d.naumenko.a@gmail.com>
* @since 2.0.14
*/
class ConjunctionConditionBuilder implements ExpressionBuilderInterface
{
use ExpressionBuilderTrait;
/**
* Method builds the raw SQL from the $expression that will not be additionally
* escaped or quoted.
*
* @param ExpressionInterface|ConjunctionCondition $condition the expression to be built.
* @param array $params the binding parameters.
* @return string the raw SQL that will not be additionally escaped or quoted.
*/
public function build(ExpressionInterface $condition, array &$params = [])
{
$parts = $this->buildExpressionsFrom($condition, $params);
if (empty($parts)) {
return '';
}
if (count($parts) === 1) {
return reset($parts);
}
return '(' . implode(") {$condition->getOperator()} (", $parts) . ')';
}
/**
* Builds expressions, that are stored in $condition
*
* @param ExpressionInterface|ConjunctionCondition $condition the expression to be built.
* @param array $params the binding parameters.
* @return string[]
*/
private function buildExpressionsFrom(ExpressionInterface $condition, &$params = [])
{
$parts = [];
foreach ($condition->getExpressions() as $condition) {
if (is_array($condition)) {
$condition = $this->queryBuilder->buildCondition($condition, $params);
}
if ($condition instanceof ExpressionInterface) {
$condition = $this->queryBuilder->buildExpression($condition, $params);
}
if ($condition !== '') {
$parts[] = $condition;
}
}
return $parts;
}
}