80 lines
2.4 KiB
C++
80 lines
2.4 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 _OB_LOG_VALUES_H
|
|
#define _OB_LOG_VALUES_H 1
|
|
#include "common/row/ob_row_store.h"
|
|
#include "sql/optimizer/ob_logical_operator.h"
|
|
#include "sql/resolver/ob_stmt.h"
|
|
#include "sql/optimizer/ob_log_plan.h"
|
|
namespace oceanbase
|
|
{
|
|
namespace sql
|
|
{
|
|
/**
|
|
* ObLogValues is currently being used as 'explain' and 'help' operator.
|
|
*/
|
|
class ObLogValues : public ObLogicalOperator
|
|
{
|
|
public:
|
|
static const int64_t MAX_EXPLAIN_BUFFER_SIZE = 10 * 1024 * 1024;
|
|
ObLogValues(ObLogPlan &plan)
|
|
: ObLogicalOperator(plan),
|
|
explain_plan_(NULL),
|
|
row_store_(plan.get_allocator())
|
|
{}
|
|
virtual ~ObLogValues() {}
|
|
ObLogPlan *get_explain_plan() const { return explain_plan_; }
|
|
void set_explain_plan(ObLogPlan * const plan) { explain_plan_ = plan; }
|
|
int add_row(const common::ObNewRow &row)
|
|
{
|
|
return row_store_.add_row(row);
|
|
}
|
|
common::ObRowStore & get_row_store() { return row_store_; }
|
|
uint64_t hash(uint64_t seed) const
|
|
{
|
|
if (NULL != explain_plan_) {
|
|
seed = do_hash(*explain_plan_, seed);
|
|
}
|
|
seed = ObLogicalOperator::hash(seed);
|
|
|
|
return seed;
|
|
}
|
|
|
|
int set_row_store(const common::ObRowStore &row_store)
|
|
{
|
|
int ret = common::OB_SUCCESS;
|
|
if (OB_FAIL(row_store_.assign(row_store))) {
|
|
SQL_OPT_LOG(WARN, "fail to assign row store, ret=%d", K(ret));
|
|
}
|
|
return ret;
|
|
}
|
|
int64_t get_col_count() const { return row_store_.get_col_count(); }
|
|
virtual int compute_op_parallel_and_server_info() override
|
|
{
|
|
int ret = common::OB_SUCCESS;
|
|
if (get_num_of_child() == 0) {
|
|
ret = set_parallel_and_server_info_for_match_all();
|
|
} else {
|
|
ret = ObLogicalOperator::compute_op_parallel_and_server_info();
|
|
}
|
|
return ret;
|
|
}
|
|
private:
|
|
ObLogPlan *explain_plan_;
|
|
common::ObRowStore row_store_;
|
|
DISALLOW_COPY_AND_ASSIGN(ObLogValues);
|
|
};
|
|
}
|
|
}
|
|
#endif
|