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src/sql/engine/expr/ob_expr_cmp_func.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_EXPR_CMP_FUNC_H_
+#define OCEANBASE_EXPR_CMP_FUNC_H_
+
+#include "sql/engine/expr/ob_expr.h"
+#include "common/object/ob_object.h"
+#include "common/object/ob_obj_compare.h"
+#include "lib/charset/ob_charset.h"
+
+namespace oceanbase {
+namespace common {
+class ObDatum;
+}
+namespace sql {
+typedef int (*DatumCmpFunc)(const common::ObDatum& datum1, const common::ObDatum& datum2);
+class ObExprCmpFuncsHelper {
+  public:
+  static sql::ObExpr::EvalFunc get_eval_expr_cmp_func(const common::ObObjType type1, const common::ObObjType type2,
+      const common::ObCmpOp cmp_op, const bool is_oracle_mode, const common::ObCollationType cs_type);
+
+  static DatumCmpFunc get_datum_expr_cmp_func(const common::ObObjType type1, const common::ObObjType type2,
+      const bool is_oracle_mode, const common::ObCollationType cs_type);
+};
+}  // namespace sql
+}  // end namespace oceanbase
+#endif  // !OCEANBASE_EXPR_CMP_FUNC_H_