176 lines
7.4 KiB
C++
176 lines
7.4 KiB
C++
/**
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* Copyright (c) 2021 OceanBase
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* OceanBase CE is licensed under Mulan PubL v2.
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* You can use this software according to the terms and conditions of the Mulan PubL v2.
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* You may obtain a copy of Mulan PubL v2 at:
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* http://license.coscl.org.cn/MulanPubL-2.0
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* THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
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* EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
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* MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
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* See the Mulan PubL v2 for more details.
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*/
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#ifndef OCEANBASE_SQL_RESOLVER_EXPR_OB_RAW_EXPR_PRINTER_H_
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#define OCEANBASE_SQL_RESOLVER_EXPR_OB_RAW_EXPR_PRINTER_H_
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#include "sql/resolver/expr/ob_raw_expr.h"
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#include "lib/string/ob_sql_string.h"
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#include "common/ob_smart_call.h"
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#include "sql/ob_sql_utils.h"
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#include "sql/dblink/ob_dblink_utils.h"
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namespace oceanbase
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{
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namespace common
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{
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class ObTimeZoneInfo;
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}
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namespace sql
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{
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class ObRawExprPrinter
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{
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#define LEN_AND_PTR(str) (str.length()), (str.ptr())
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#define SQL_ESCAPE_STR(str) (to_cstring(ObHexEscapeSqlStr(str)))
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#define _DATA_PRINTF(...) databuff_printf(buf_, buf_len_, *pos_, __VA_ARGS__)
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#define DATA_PRINTF(...) \
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do { \
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if (OB_SUCC(ret)) { \
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if (OB_ISNULL(buf_) || OB_ISNULL(pos_)) { \
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ret = OB_ERR_UNEXPECTED; \
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LOG_WARN("buf_ or pos_ is null", K(ret)); \
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} else if (OB_FAIL(_DATA_PRINTF(__VA_ARGS__))) { \
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LOG_WARN("fail to print", K(ret)); \
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} \
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} \
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} while(0) \
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#define PRINT_IDENT(ident_str) \
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do { \
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if (OB_SUCC(ret) && OB_FAIL(ObSQLUtils::print_identifier( \
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buf_, buf_len_, (*pos_), print_params_.cs_type_, ident_str))) { \
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LOG_WARN("fail to print ident str", K(ret), K(ident_str)); \
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} \
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} while(0)
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#define CONVERT_CHARSET_FOR_RPINT(alloc, input_str) \
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do { \
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if (OB_SUCC(ret) && OB_FAIL(ObCharset::charset_convert(allocator, \
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input_str, \
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CS_TYPE_UTF8MB4_BIN, \
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print_params_.cs_type_, \
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input_str))) { \
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LOG_WARN("fail to gen ident str", K(ret), K(input_str)); \
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} \
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} while(0)
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#define PRINT_EXPR(expr) \
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do { \
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if (OB_SUCCESS == ret && OB_FAIL(SMART_CALL(print(expr)))) { \
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LOG_WARN("fail to print expr", K(ret)); \
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} \
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} while(0) \
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#define SET_SYMBOL_IF_EMPTY(str) \
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do { \
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if (0 == symbol.length()) { \
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symbol = str; \
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} \
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} while (0) \
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#define PRINT_QUOT \
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do { \
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if (lib::is_oracle_mode()) { \
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DATA_PRINTF("\""); \
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} else { \
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DATA_PRINTF("`"); \
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} \
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} while (0);
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#define PRINT_QUOT_WITH_SPACE \
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DATA_PRINTF(" "); \
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PRINT_QUOT;
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// cast函数在parse阶段用到这两个宏, 但定义在sql_parse_tab.c中
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// cast函数功能不完善，beta之前不会修改, 先定义在这里
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// TODO@nijia.nj
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#define BINARY_COLLATION 63
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#define INVALID_COLLATION 0
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public:
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ObRawExprPrinter();
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ObRawExprPrinter(char *buf, int64_t buf_len, int64_t *pos, ObSchemaGetterGuard *schema_guard,
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common::ObObjPrintParams print_params = common::ObObjPrintParams(),
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const ParamStore *param_store = NULL);
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virtual ~ObRawExprPrinter();
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void init(char *buf, int64_t buf_len, int64_t *pos, ObSchemaGetterGuard *schema_guard,
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ObObjPrintParams print_params, const ParamStore *param_store = NULL);
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// stmt中会出现若干expr, 为了避免反复实例化，这里将expr作为do_print的参数
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int do_print(ObRawExpr *expr, ObStmtScope scope, bool only_column_namespace = false, bool print_cte = false);
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int pre_check_treat_opt(ObRawExpr *expr, bool &is_treat);
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private:
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int print(ObRawExpr *expr);
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int print(ObConstRawExpr *expr);
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int print(ObQueryRefRawExpr *expr);
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int print(ObColumnRefRawExpr *expr);
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int print(ObOpRawExpr *expr);
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int print(ObCaseOpRawExpr *expr);
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int print(ObSetOpRawExpr *expr);
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int print(ObAggFunRawExpr *expr);
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int print(ObSysFunRawExpr *expr);
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int print_translate(ObSysFunRawExpr *expr);
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int print(ObUDFRawExpr *expr);
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int print(ObWinFunRawExpr *expr);
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int print(ObPseudoColumnRawExpr *expr);
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int print_date_unit(ObRawExpr *expr);
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int print_get_format_unit(ObRawExpr *expr);
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int print_cast_type(ObRawExpr *expr);
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int print_json_expr(ObSysFunRawExpr *expr);
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int print_json_value(ObSysFunRawExpr *expr);
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int print_json_query(ObSysFunRawExpr *expr);
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int print_json_exists(ObSysFunRawExpr *expr);
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int print_json_equal(ObSysFunRawExpr *expr);
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int print_json_array(ObSysFunRawExpr *expr);
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int print_json_mergepatch(ObSysFunRawExpr *expr);
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int print_json_return_type(ObRawExpr *expr);
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int print_is_json(ObSysFunRawExpr *expr);
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int print_json_object(ObSysFunRawExpr *expr);
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int print_ora_json_arrayagg(ObAggFunRawExpr *expr);
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int print_ora_json_objectagg(ObAggFunRawExpr *expr);
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int print_partition_exprs(ObWinFunRawExpr *expr);
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int print_order_items(ObWinFunRawExpr *expr);
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int print_window_clause(ObWinFunRawExpr *expr);
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int print_xml_parse_expr(ObSysFunRawExpr *expr);
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int print_xml_element_expr(ObSysFunRawExpr *expr);
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int print_xml_attributes_expr(ObSysFunRawExpr *expr);
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int print_xml_agg_expr(ObAggFunRawExpr *expr);
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int print_xml_serialize_expr(ObSysFunRawExpr *expr);
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int print_type(const ObExprResType &dst_type);
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int inner_print_fun_params(ObSysFunRawExpr &expr);
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// disallow copy
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DISALLOW_COPY_AND_ASSIGN(ObRawExprPrinter);
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private:
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// data members
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char *buf_;
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int64_t buf_len_;
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// avoid to update pos_ between different printers(mainly ObRawExprPrinter
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// and ObSelectStmtPrinter), we definate pointer of pos_ rather than object
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int64_t *pos_;
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ObStmtScope scope_;
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bool only_column_namespace_;
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const common::ObTimeZoneInfo *tz_info_;
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ObObjPrintParams print_params_;
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const ParamStore *param_store_;
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ObSchemaGetterGuard *schema_guard_;
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bool print_cte_;
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};
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} // end namespace sql
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} // end namespace oceanbase
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#endif // OCEANBASE_SQL_RESOLVER_EXPR_OB_RAW_EXPR_PRINTER_H_
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