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vendor/yiisoft/yii2/db/conditions/NotConditionBuilder.php

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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 NotConditionBuilder builds objects of [[NotCondition]]
+ *
+ * @author Dmytro Naumenko <d.naumenko.a@gmail.com>
+ * @since 2.0.14
+ */
+class NotConditionBuilder implements ExpressionBuilderInterface
+{
+    use ExpressionBuilderTrait;
+
+
+    /**
+     * Method builds the raw SQL from the $expression that will not be additionally
+     * escaped or quoted.
+     *
+     * @param ExpressionInterface|NotCondition $expression 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 $expression, array &$params = [])
+    {
+        $operand = $expression->getCondition();
+        if ($operand === '') {
+            return '';
+        }
+
+        $expession = $this->queryBuilder->buildCondition($operand, $params);
+        return "{$this->getNegationOperator()} ($expession)";
+    }
+
+    /**
+     * @return string
+     */
+    protected function getNegationOperator()
+    {
+        return 'NOT';
+    }
+}