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