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vendor/yiisoft/yii2/db/ExpressionBuilderTrait.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;
+
+/**
+ * Trait ExpressionBuilderTrait provides common constructor for classes that
+ * should implement [[ExpressionBuilderInterface]]
+ *
+ * @author Dmytro Naumenko <d.naumenko.a@gmail.com>
+ * @since 2.0.14
+ */
+trait ExpressionBuilderTrait
+{
+    /**
+     * @var QueryBuilder
+     */
+    protected $queryBuilder;
+
+    /**
+     * ExpressionBuilderTrait constructor.
+     *
+     * @param QueryBuilder $queryBuilder
+     */
+    public function __construct(QueryBuilder $queryBuilder)
+    {
+        $this->queryBuilder = $queryBuilder;
+    }
+}