/**

* 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_BENCHMARK_

#define OCEANBASE_SQL_ENGINE_EXPR_OB_EXPR_BENCHMARK_

#include "sql/engine/expr/ob_expr_operator.h"

namespace oceanbase

{

namespace sql

{

class ObExprBenchmark : public ObFuncExprOperator

{

public:

explicit ObExprBenchmark(common::ObIAllocator &alloc);

virtual ~ObExprBenchmark() {};

virtual int calc_result_type2(ObExprResType &type,

ObExprResType &type1,

ObExprResType &type2,

ObExprTypeCtx &type_ctx) const;

virtual int cg_expr(ObExprCGCtx &expr_cg_ctx, const ObRawExpr &raw_expr,

ObExpr &rt_expr) const;

static int eval_benchmark(const ObExpr &expr,

ObEvalCtx &ctx,

ObDatum &expr_datum);

static int eval_benchmark_batch(const ObExpr &expr,

ObEvalCtx &ctx,

const ObBitVector &skip,

const int64_t batch_size);

private:

static int collect_exprs(common::ObIArray<ObExpr *> &exprs,

const ObExpr &root_expr,

ObEvalCtx &ctx);

static int clear_all_flags(common::ObIArray<ObExpr *> &exprs, ObEvalCtx &ctx);

DISALLOW_COPY_AND_ASSIGN(ObExprBenchmark);

};

}

}

#endif /* OCEANBASE_SQL_ENGINE_EXPR_OB_EXPR_BENCHMARK_ */