249 lines
10 KiB
C++
249 lines
10 KiB
C++
/**
|
|
* 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_SQL_EXPR_LRPAD_
|
|
#define OCEANBASE_SQL_ENGINE_EXPR_OB_SQL_EXPR_LRPAD_
|
|
|
|
#include "sql/engine/expr/ob_expr_operator.h"
|
|
#include "sql/engine/expr/ob_i_expr_extra_info.h"
|
|
|
|
namespace oceanbase
|
|
{
|
|
namespace sql
|
|
{
|
|
class ObExprBaseLRpad : public ObStringExprOperator
|
|
{
|
|
public:
|
|
enum LRpadType { LPAD_TYPE = 0, RPAD_TYPE = 1};
|
|
explicit ObExprBaseLRpad(common::ObIAllocator &alloc,
|
|
ObExprOperatorType type,
|
|
const char *name,
|
|
int32_t param_num);
|
|
|
|
virtual ~ObExprBaseLRpad();
|
|
|
|
int calc_type(ObExprResType &type,
|
|
ObExprResType &text,
|
|
ObExprResType &len,
|
|
ObExprResType *pad_text,
|
|
common::ObExprTypeCtx &type_ctx) const;
|
|
|
|
static int padding(LRpadType type,
|
|
const common::ObCollationType coll_type,
|
|
const char *text,
|
|
const int64_t &text_size,
|
|
const char *pad,
|
|
const int64_t &pad_size,
|
|
const int64_t &prefix_size,
|
|
const int64_t &repeat_count,
|
|
const bool &pad_space, // for oracle
|
|
common::ObIAllocator *allocator,
|
|
char* &result,
|
|
int64_t &size,
|
|
ObObjType res_type,
|
|
bool has_lob_header);
|
|
static int padding_inner(LRpadType type,
|
|
const char *text,
|
|
const int64_t &text_size,
|
|
const char *pad,
|
|
const int64_t &pad_size,
|
|
const int64_t &prefix_size,
|
|
const int64_t &repeat_count,
|
|
const bool &pad_space,
|
|
ObString &space_str,
|
|
char* &result);
|
|
|
|
int calc(const LRpadType type,
|
|
const common::ObObj &text,
|
|
const common::ObObj &len,
|
|
const common::ObObj &pad_text,
|
|
common::ObExprCtx &expr_ctx,
|
|
common::ObObj &result) const;
|
|
|
|
// @param [in/out] use result.collation as input param
|
|
// for ObExprPad
|
|
static int calc_mysql(const LRpadType type,
|
|
const ObExprResType result_type,
|
|
const common::ObObj &text,
|
|
const common::ObObj &len,
|
|
const common::ObObj &pad_text,
|
|
const ObSQLSessionInfo *session,
|
|
common::ObIAllocator *allocator,
|
|
common::ObObj &result);
|
|
|
|
static int get_padding_info_mysql(const common::ObCollationType &cs,
|
|
const common::ObString &str_text,
|
|
const int64_t &len,
|
|
const common::ObString &str_padtext,
|
|
const int64_t max_result_size,
|
|
int64_t &repeat_count,
|
|
int64_t &prefix_size,
|
|
int64_t &size);
|
|
|
|
static int calc_oracle(const LRpadType type,
|
|
const ObExprResType result_type,
|
|
const common::ObObj &text,
|
|
const common::ObObj &len,
|
|
const common::ObObj &pad_text,
|
|
common::ObExprCtx &expr_ctx,
|
|
common::ObObj &result);
|
|
static int calc_type_length_mysql(const ObExprResType result_type,
|
|
const common::ObObj &text,
|
|
const common::ObObj &pad_text,
|
|
const common::ObObj &len,
|
|
const ObBasicSessionInfo *session,
|
|
int64_t &result_size);
|
|
static int calc_type_length_oracle(const ObExprResType &result_type,
|
|
const common::ObObj &text,
|
|
const common::ObObj &pad_text,
|
|
const common::ObObj &len,
|
|
int64_t &result_size);
|
|
|
|
static int get_padding_info_oracle(const common::ObCollationType cs,
|
|
const common::ObString &str_text,
|
|
const int64_t &width,
|
|
const common::ObString &str_padtext,
|
|
const int64_t max_result_size,
|
|
int64_t &repeat_count,
|
|
int64_t &prefix_size,
|
|
bool &pad_space);
|
|
// for engine 3.0
|
|
static int calc_mysql_pad_expr(const ObExpr &expr, ObEvalCtx &ctx, LRpadType pad_type,
|
|
ObDatum &res);
|
|
static int calc_mysql(const LRpadType pad_type, const ObExpr &expr, ObEvalCtx &ctx,
|
|
const common::ObDatum &text,
|
|
const common::ObDatum &len, const common::ObDatum &pad_text,
|
|
const ObSQLSessionInfo &session, common::ObIAllocator &res_alloc,
|
|
ObDatum &res);
|
|
static int calc_mysql_inner(const LRpadType pad_type,
|
|
const ObExpr &expr,
|
|
const ObDatum &len,
|
|
int64_t &max_result_size,
|
|
const ObString &str_text,
|
|
const ObString &str_pad,
|
|
ObIAllocator &res_alloc,
|
|
ObDatum &res);
|
|
static int calc_oracle_pad_expr(const ObExpr &expr, ObEvalCtx &ctx, LRpadType pad_type,
|
|
ObDatum &res);
|
|
static int calc_oracle(LRpadType pad_type, const ObExpr &expr, const common::ObDatum &text,
|
|
const common::ObDatum &len, const common::ObDatum &pad_text,
|
|
common::ObIAllocator &res_alloc, ObDatum &res, bool &is_unchanged_clob);
|
|
int get_origin_len_obj(ObObj &len_obj) const;
|
|
private:
|
|
DISALLOW_COPY_AND_ASSIGN(ObExprBaseLRpad);
|
|
};
|
|
|
|
class ObExprLpad : public ObExprBaseLRpad
|
|
{
|
|
public:
|
|
explicit ObExprLpad(common::ObIAllocator &alloc);
|
|
virtual ~ObExprLpad();
|
|
|
|
virtual int calc_result_type3(ObExprResType &type,
|
|
ObExprResType &text,
|
|
ObExprResType &len,
|
|
ObExprResType &pad_text,
|
|
common::ObExprTypeCtx &type_ctx) const override;
|
|
|
|
// for engine 3.0
|
|
virtual int cg_expr(ObExprCGCtx &expr_cg_ctx, const ObRawExpr &raw_expr,
|
|
ObExpr &rt_expr) const override;
|
|
static int calc_mysql_lpad_expr(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &res);
|
|
private:
|
|
DISALLOW_COPY_AND_ASSIGN(ObExprLpad);
|
|
};
|
|
|
|
class ObExprRpad : public ObExprBaseLRpad
|
|
{
|
|
public:
|
|
explicit ObExprRpad(common::ObIAllocator &alloc);
|
|
explicit ObExprRpad(common::ObIAllocator &alloc,
|
|
ObExprOperatorType type,
|
|
const char *name);
|
|
|
|
virtual ~ObExprRpad();
|
|
|
|
virtual int calc_result_type3(ObExprResType &type,
|
|
ObExprResType &text,
|
|
ObExprResType &len,
|
|
ObExprResType &pad_text,
|
|
common::ObExprTypeCtx &type_ctx) const override;
|
|
|
|
// for engine 3.0
|
|
virtual int cg_expr(ObExprCGCtx &expr_cg_ctx, const ObRawExpr &raw_expr,
|
|
ObExpr &rt_expr) const;
|
|
static int calc_mysql_rpad_expr(const ObExpr &expr, ObEvalCtx &ctx,
|
|
ObDatum &res);
|
|
private:
|
|
DISALLOW_COPY_AND_ASSIGN(ObExprRpad);
|
|
};
|
|
|
|
class ObExprOracleLpad : public ObExprBaseLRpad
|
|
{
|
|
public:
|
|
explicit ObExprOracleLpad(common::ObIAllocator &alloc);
|
|
virtual ~ObExprOracleLpad();
|
|
|
|
virtual int calc_result_typeN(ObExprResType &type,
|
|
ObExprResType *types_array,
|
|
int64_t param_num,
|
|
common::ObExprTypeCtx &type_ctx) const override;
|
|
|
|
virtual int cg_expr(ObExprCGCtx &expr_cg_ctx, const ObRawExpr &raw_expr,
|
|
ObExpr &rt_expr) const;
|
|
static int calc_oracle_lpad_expr(const ObExpr &expr, ObEvalCtx &ctx,
|
|
ObDatum &res);
|
|
private:
|
|
DISALLOW_COPY_AND_ASSIGN(ObExprOracleLpad);
|
|
};
|
|
|
|
class ObExprOracleRpad : public ObExprBaseLRpad
|
|
{
|
|
public:
|
|
explicit ObExprOracleRpad(common::ObIAllocator &alloc);
|
|
virtual ~ObExprOracleRpad();
|
|
|
|
virtual int calc_result_typeN(ObExprResType &type,
|
|
ObExprResType *types_array,
|
|
int64_t param_num,
|
|
common::ObExprTypeCtx &type_ctx) const override;
|
|
|
|
virtual int cg_expr(ObExprCGCtx &expr_cg_ctx, const ObRawExpr &raw_expr,
|
|
ObExpr &rt_expr) const;
|
|
static int calc_oracle_rpad_expr(const ObExpr &expr, ObEvalCtx &ctx,
|
|
ObDatum &res);
|
|
private:
|
|
DISALLOW_COPY_AND_ASSIGN(ObExprOracleRpad);
|
|
};
|
|
|
|
struct ObExprOracleLRpadInfo : public ObIExprExtraInfo
|
|
{
|
|
OB_UNIS_VERSION(1);
|
|
public:
|
|
ObExprOracleLRpadInfo(common::ObIAllocator &alloc, ObExprOperatorType type)
|
|
: ObIExprExtraInfo(alloc, type),
|
|
is_called_in_sql_(true)
|
|
{
|
|
}
|
|
|
|
virtual int deep_copy(common::ObIAllocator &allocator,
|
|
const ObExprOperatorType type,
|
|
ObIExprExtraInfo *&copied_info) const override;
|
|
|
|
public:
|
|
bool is_called_in_sql_;
|
|
};
|
|
|
|
} // namespace sql
|
|
} // namespace oceanbase
|
|
#endif // OCEANBASE_SQL_ENGINE_EXPR_OB_SQL_EXPR_RPAD_
|