patch 4.0

2022-10-24 10:34:53 +08:00
parent 4ad6e00ec3
commit 93a1074b0c
10533 changed files with 2588271 additions and 2299373 deletions
--- a/src/sql/engine/expr/ob_expr_soundex.h
+++ b/src/sql/engine/expr/ob_expr_soundex.h
@ -0,0 +1,52 @@
+/**
+ * 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_OB_EXPR_SOUNDEX_
+#define OCEANBASE_SQL_ENGINE_EXPR_OB_EXPR_SOUNDEX_
+
+#include "sql/engine/expr/ob_expr_operator.h"
+namespace oceanbase
+{
+namespace sql
+{
+class ObExprSoundex : public ObFuncExprOperator
+{
+public:
+  explicit  ObExprSoundex(common::ObIAllocator &alloc);
+  virtual ~ObExprSoundex() {};
+  virtual int calc_result_type1(ObExprResType &type,
+                                ObExprResType &type1,
+                                common::ObExprTypeCtx &type_ctx) const;
+  virtual int cg_expr(ObExprCGCtx &expr_cg_ctx, const ObRawExpr &raw_expr,
+                       ObExpr &rt_expr) const override;
+  static int8_t get_character_code(const int32_t wchar);
+  static int convert_str_to_soundex(const ObString &input,
+                                    const ObCollationType input_cs_type,
+                                    const bool use_original_algo,
+                                    const bool fix_min_len,
+                                    char *buf, const int64_t len, int64_t &pos);
+  static int calc(const ObString &input, const ObCollationType intput_cs_type,
+                        const ObCollationType res_cs_type,
+                        common::ObIAllocator &tmp_alloc, common::ObIAllocator &res_alloc,
+                        ObString &out);
+  static int eval_soundex(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &expr_datum);
+private:
+  static const int64_t MIN_RESULT_LENGTH = 4;
+  // if result collation type is nonascii such as utf16, we need charset convert in the end.
+  // str_allocator_ is used to allocate memory for result before charset convert.
+  common::ObArenaAllocator str_allocator_;
+  DISALLOW_COPY_AND_ASSIGN(ObExprSoundex);
+};
+
+}
+}
+#endif /* OCEANBASE_SQL_ENGINE_EXPR_OB_EXPR_SOUNDEX_ */