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src/sql/resolver/expr/ob_raw_expr_printer.h Normal file
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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_SQL_RESOLVER_EXPR_OB_RAW_EXPR_PRINTER_H_
#define OCEANBASE_SQL_RESOLVER_EXPR_OB_RAW_EXPR_PRINTER_H_
#include "sql/resolver/expr/ob_raw_expr.h"
#include "lib/string/ob_sql_string.h"
#include "common/ob_smart_call.h"
#include "sql/ob_sql_utils.h"
namespace oceanbase {
namespace common {
class ObTimeZoneInfo;
}
namespace sql {
class ObRawExprPrinter {
#define LEN_AND_PTR(str) (str.length()), (str.ptr())
#define SQL_ESCAPE_STR(str) (to_cstring(ObHexEscapeSqlStr(str)))
#define _DATA_PRINTF(...) databuff_printf(buf_, buf_len_, *pos_, __VA_ARGS__)
#define DATA_PRINTF(...) \
do { \
if (OB_SUCC(ret)) { \
if (OB_ISNULL(buf_) || OB_ISNULL(pos_)) { \
ret = OB_ERR_UNEXPECTED; \
LOG_WARN("buf_ or pos_ is null", K(ret)); \
} else if (OB_FAIL(_DATA_PRINTF(__VA_ARGS__))) { \
LOG_WARN("fail to print", K(ret)); \
} \
} \
} while (0)
#define PRINT_IDENT(ident_str) \
do { \
if (OB_SUCC(ret) && \
OB_FAIL(ObSQLUtils::print_identifier(buf_, buf_len_, (*pos_), print_params_.cs_type_, ident_str))) { \
LOG_WARN("fail to print ident str", K(ret), K(ident_str)); \
} \
} while (0)
#define CONVERT_CHARSET_FOR_RPINT(alloc, input_str) \
do { \
if (OB_SUCC(ret) && OB_FAIL(ObCharset::charset_convert( \
allocator, input_str, CS_TYPE_UTF8MB4_BIN, print_params_.cs_type_, input_str))) { \
LOG_WARN("fail to gen ident str", K(ret), K(input_str)); \
} \
} while (0)
#define PRINT_EXPR(expr) \
do { \
if (OB_SUCCESS == ret && OB_FAIL(SMART_CALL(print(expr)))) { \
LOG_WARN("fail to print expr", K(ret)); \
} \
} while (0)
#define SET_SYMBOL_IF_EMPTY(str) \
do { \
if (0 == symbol.length()) { \
symbol = str; \
} \
} while (0)
#define BINARY_COLLATION 63
#define INVALID_COLLATION 0
public:
ObRawExprPrinter();
ObRawExprPrinter(
char* buf, int64_t buf_len, int64_t* pos, common::ObObjPrintParams print_params = common::ObObjPrintParams());
ObRawExprPrinter(bool);
virtual ~ObRawExprPrinter();
void init(char* buf, int64_t buf_len, int64_t* pos, ObObjPrintParams print_params);
int do_print(ObRawExpr* expr, ObStmtScope scope, bool only_column_namespace = false);
private:
int print(ObRawExpr* expr);
int print(ObConstRawExpr* expr);
int print(ObQueryRefRawExpr* expr);
int print(ObColumnRefRawExpr* expr);
int print(ObOpRawExpr* expr);
int print(ObCaseOpRawExpr* expr);
int print(ObSetOpRawExpr* expr);
int print(ObAggFunRawExpr* expr);
int print(ObSysFunRawExpr* expr);
int print(ObWinFunRawExpr* expr);
int print(ObFunMatchAgainst* expr);
int print(ObPseudoColumnRawExpr* expr);
int print_date_unit(ObRawExpr* expr);
int print_cast_type(ObRawExpr* expr);
int print_partition_exprs(ObWinFunRawExpr* expr);
int print_order_items(ObWinFunRawExpr* expr);
int print_window_clause(ObWinFunRawExpr* expr);
// disallow copy
DISALLOW_COPY_AND_ASSIGN(ObRawExprPrinter);
private:
// data members
char* buf_;
int64_t buf_len_;
// avoid to update pos_ between different printers(mainly ObRawExprPrinter
// and ObSelectStmtPrinter), we definate pointer of pos_ rather than object
int64_t* pos_;
ObStmtScope scope_;
bool only_column_namespace_;
bool is_inited_;
const common::ObTimeZoneInfo* tz_info_;
ObObjPrintParams print_params_;
const ParamStore* params_;
};
} // end namespace sql
} // end namespace oceanbase
#endif // OCEANBASE_SQL_RESOLVER_EXPR_OB_RAW_EXPR_PRINTER_H_