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src/sql/engine/expr/ob_expr_interval.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 SRC_SQL_ENGINE_EXPR_OB_EXPR_INTERVAL_H_
+#define SRC_SQL_ENGINE_EXPR_OB_EXPR_INTERVAL_H_
+
+#include <cstdint>
+
+#include "sql/engine/expr/ob_expr_res_type.h"
+#include "sql/parser/ob_item_type.h"
+#include "ob_expr_operator.h"
+
+namespace oceanbase {
+namespace sql {
+class ObExprInterval : public ObExprOperator {
+  OB_UNIS_VERSION_V(1);
+
+  public:
+  explicit ObExprInterval(common::ObIAllocator& alloc);
+
+  virtual ~ObExprInterval()
+  {}
+
+  virtual int assign(const ObExprOperator& other);
+
+  OB_INLINE void set_use_binary_search(bool use_binary_search)
+  {
+    use_binary_search_ = use_binary_search;
+  }
+
+  virtual int calc_result_typeN(
+      ObExprResType& type, ObExprResType* types, int64_t param_num, common::ObExprTypeCtx& type_ctx) const override;
+  virtual int calc_resultN(common::ObObj& result, const common::ObObj* objs_array, int64_t param_num,
+      common::ObExprCtx& expr_ctx) const override;
+  virtual int cg_expr(ObExprCGCtx& expr_cg_ctx, const ObRawExpr& raw_expr, ObExpr& rt_expr) const override;
+  static int calc_interval_expr(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& res);
+
+  private:
+  bool use_binary_search_;  // use binary search or sequential search during calc
+};
+
+}  // namespace sql
+}  // namespace oceanbase
+
+#endif /* SRC_SQL_ENGINE_EXPR_OB_EXPR_INTERVAL_H_ */