40 lines
1.6 KiB
C++
40 lines
1.6 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_EXPR_EXPORT_SET_
|
|
#define OCEANBASE_SQL_ENGINE_EXPR_OB_EXPR_EXPORT_SET_
|
|
|
|
#include "sql/engine/expr/ob_expr_operator.h"
|
|
|
|
namespace oceanbase {
|
|
namespace sql {
|
|
class ObExprExportSet : public ObStringExprOperator {
|
|
public:
|
|
explicit ObExprExportSet(common::ObIAllocator& alloc);
|
|
virtual ~ObExprExportSet();
|
|
virtual int calc_result_typeN(
|
|
ObExprResType& type, ObExprResType* types_array, int64_t param_num, common::ObExprTypeCtx& type_ctx) const;
|
|
virtual int cg_expr(ObExprCGCtx& op_cg_ctx, const ObRawExpr& raw_expr, ObExpr& rt_expr) const override;
|
|
static int eval_export_set(const ObExpr& expr, ObEvalCtx& ctx, ObDatum& expr_datum);
|
|
private:
|
|
// disallow copy
|
|
DISALLOW_COPY_AND_ASSIGN(ObExprExportSet);
|
|
// helper func
|
|
static int calc_export_set_inner(const int64_t max_result_size,
|
|
ObString& ret_str, const uint64_t bits, const ObString& on, const ObString& off,
|
|
const ObString& sep, const int64_t n_bits, ObExprStringBuf& string_buf);
|
|
};
|
|
} // namespace sql
|
|
} // namespace oceanbase
|
|
|
|
#endif // OCEANBASE_SQL_ENGINE_EXPR_OB_EXPR_EXPORT_SET_
|