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src/sql/engine/expr/ob_expr_nvl2_oracle.h

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+/**
+ * Copyright (c) 2021 OceanBase
+ * OceanBase CE is licensed under Mulan PubL v2.
+ * You can use this software according to the terms and conditions of the Mulan PubL v2.
+ * You may obtain a copy of Mulan PubL v2 at:
+ *          http://license.coscl.org.cn/MulanPubL-2.0
+ * THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
+ * EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
+ * MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
+ * See the Mulan PubL v2 for more details.
+ */
+
+#ifndef _OCEANBASE_SQL_ENGINE_EXPR_NVL2_ORACLE_H_
+#define _OCEANBASE_SQL_ENGINE_EXPR_NVL2_ORACLE_H_
+
+#include "sql/engine/expr/ob_expr_operator.h"
+#include "sql/engine/expr/ob_expr_nvl.h"
+
+namespace oceanbase {
+namespace sql {
+using namespace oceanbase::common;
+class ObExprNvl2Oracle : public ObFuncExprOperator {
+  public:
+  explicit ObExprNvl2Oracle(ObIAllocator& alloc);
+  virtual ~ObExprNvl2Oracle();
+
+  virtual int calc_result_type3(ObExprResType& type, ObExprResType& type1, ObExprResType& type2, ObExprResType& type3,
+      ObExprTypeCtx& type_ctx) const;
+
+  virtual int calc_result3(
+      ObObj& result, const ObObj& obj1, const ObObj& obj2, const ObObj& obj3, ObExprCtx& expr_ctx) const;
+
+  virtual int cg_expr(ObExprCGCtx& expr_cg_ctx, const ObRawExpr& raw_expr, ObExpr& rt_expr) const;
+
+  private:
+  DISALLOW_COPY_AND_ASSIGN(ObExprNvl2Oracle);
+};
+}  // namespace sql
+}  // namespace oceanbase
+
+#endif