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2021-05-31 22:56:52 +08:00
commit cea7de1475
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--- a/src/sql/engine/expr/ob_expr_date_add.h
+++ b/src/sql/engine/expr/ob_expr_date_add.h
@ -0,0 +1,109 @@
+/**
+ * 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 _OB_SQL_EXPR_DATE_ADD_H_
+#define _OB_SQL_EXPR_DATE_ADD_H_
+#include "sql/engine/expr/ob_expr_operator.h"
+namespace oceanbase {
+namespace sql {
+
+class ObExprDateAdjust : public ObFuncExprOperator {
+  public:
+  ObExprDateAdjust(common::ObIAllocator& alloc, ObExprOperatorType type, const char* name, int32_t param_num,
+      int32_t dimension = NOT_ROW_DIMENSION);
+
+  virtual ~ObExprDateAdjust();
+  virtual int calc_result_type3(ObExprResType& type, ObExprResType& date, ObExprResType& interval, ObExprResType& unit,
+      common::ObExprTypeCtx& type_ctx) const;
+  virtual int calc_result3(common::ObObj& result, const common::ObObj& date, const common::ObObj& interval,
+      const common::ObObj& unit, common::ObExprCtx& expr_ctx, bool is_add, const ObExprResType& res_type) const;
+  static int calc_date_adjust(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum, bool is_add);
+
+  private:
+  DISALLOW_COPY_AND_ASSIGN(ObExprDateAdjust);
+};
+
+class ObExprDateAdd : public ObExprDateAdjust {
+  public:
+  explicit ObExprDateAdd(common::ObIAllocator& alloc);
+  virtual ~ObExprDateAdd(){};
+  virtual int calc_result3(common::ObObj& result, const common::ObObj& date, const common::ObObj& interval,
+      const common::ObObj& date_unit, common::ObExprCtx& expr_ctx) const;
+  virtual int cg_expr(ObExprCGCtx& op_cg_ctx, const ObRawExpr& raw_expr, ObExpr& rt_expr) const override;
+  static int calc_date_add(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum);
+
+  private:
+  DISALLOW_COPY_AND_ASSIGN(ObExprDateAdd);
+};
+
+class ObExprDateSub : public ObExprDateAdjust {
+  public:
+  explicit ObExprDateSub(common::ObIAllocator& alloc);
+  virtual ~ObExprDateSub(){};
+  virtual int calc_result3(common::ObObj& result, const common::ObObj& date, const common::ObObj& interval,
+      const common::ObObj& date_unit, common::ObExprCtx& expr_ctx) const;
+  virtual int cg_expr(ObExprCGCtx& op_cg_ctx, const ObRawExpr& raw_expr, ObExpr& rt_expr) const override;
+  static int calc_date_sub(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum);
+
+  private:
+  DISALLOW_COPY_AND_ASSIGN(ObExprDateSub);
+};
+
+class ObExprAddMonths : public ObFuncExprOperator {
+  public:
+  explicit ObExprAddMonths(common::ObIAllocator& alloc);
+  virtual ~ObExprAddMonths()
+  {}
+  virtual int calc_result_type2(
+      ObExprResType& type, ObExprResType& type1, ObExprResType& type2, common::ObExprTypeCtx& type_ctx) const;
+  virtual int calc_result2(
+      common::ObObj& result, const common::ObObj& obj1, const common::ObObj& obj2, common::ObExprCtx& expr_ctx) const;
+  virtual int cg_expr(ObExprCGCtx& op_cg_ctx, const ObRawExpr& raw_expr, ObExpr& rt_expr) const override;
+  static int calc_add_months(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum);
+
+  private:
+  DISALLOW_COPY_AND_ASSIGN(ObExprAddMonths);
+};
+
+class ObExprLastDay : public ObFuncExprOperator {
+  public:
+  explicit ObExprLastDay(common::ObIAllocator& alloc);
+  virtual ~ObExprLastDay()
+  {}
+  virtual int calc_result_type1(ObExprResType& type, ObExprResType& type1, common::ObExprTypeCtx& type_ctx) const;
+  virtual int calc_result1(common::ObObj& result, const common::ObObj& obj, common::ObExprCtx& expr_ctx) const;
+  virtual int cg_expr(ObExprCGCtx& op_cg_ctx, const ObRawExpr& raw_expr, ObExpr& rt_expr) const override;
+  static int calc_last_day(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum);
+
+  private:
+  DISALLOW_COPY_AND_ASSIGN(ObExprLastDay);
+};
+
+class ObExprNextDay : public ObFuncExprOperator {
+  public:
+  explicit ObExprNextDay(common::ObIAllocator& alloc);
+  virtual ~ObExprNextDay()
+  {}
+  virtual int calc_result_type2(
+      ObExprResType& type, ObExprResType& type1, ObExprResType& type2, common::ObExprTypeCtx& type_ctx) const;
+  virtual int calc_result2(
+      common::ObObj& result, const common::ObObj& obj1, const common::ObObj& obj2, common::ObExprCtx& expr_ctx) const;
+  virtual int cg_expr(ObExprCGCtx& op_cg_ctx, const ObRawExpr& raw_expr, ObExpr& rt_expr) const override;
+  static int calc_next_day(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum);
+
+  private:
+  DISALLOW_COPY_AND_ASSIGN(ObExprNextDay);
+};
+
+}  // namespace sql
+}  // namespace oceanbase
+#endif  //_OCEANBASE_SQL_OB_EXPR_DATE_ADD_H_