forked from oceanbase/oceanbase
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathob_log_sequence.cpp
More file actions
135 lines (128 loc) · 4.43 KB
/
Copy pathob_log_sequence.cpp
File metadata and controls
135 lines (128 loc) · 4.43 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
/**
* 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.
*/
#define USING_LOG_PREFIX SQL_OPT
#include "ob_log_sequence.h"
#include "ob_log_operator_factory.h"
#include "ob_optimizer_util.h"
#include "sql/optimizer/ob_opt_est_cost.h"
#include "sql/optimizer/ob_join_order.h"
#include "common/ob_smart_call.h"
using namespace oceanbase::sql;
using namespace oceanbase::common;
using namespace oceanbase::sql::log_op_def;
int ObLogSequence::get_op_exprs(ObIArray<ObRawExpr*> &all_exprs)
{
int ret = OB_SUCCESS;
const ObDMLStmt *stmt = NULL;
if (OB_ISNULL(stmt = get_stmt())) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("stmt is null", K(ret), K(get_stmt()));
} else if (OB_FAIL(stmt->get_sequence_exprs(all_exprs))) {
LOG_WARN("fail get sequence exprs", K(ret));
} else if (OB_FAIL(ObLogicalOperator::get_op_exprs(all_exprs))) {
LOG_WARN("failed to get exprs", K(ret));
} else { /*do nothing*/ }
return ret;
}
int ObLogSequence::est_cost()
{
int ret = OB_SUCCESS;
ObLogicalOperator *child = NULL;
if (OB_ISNULL(get_plan())) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("get unexpected null", K(ret));
} else {
ObOptimizerContext &opt_ctx = get_plan()->get_optimizer_context();
if (0 == get_num_of_child()) {
op_cost_ = ObOptEstCost::cost_sequence(0,
nextval_seq_ids_.count(),
opt_ctx);
cost_ = op_cost_;
card_ = 0.0;
} else if (OB_ISNULL(child = get_child(first_child))) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("get unexpected null", K(ret));
} else {
op_cost_ = ObOptEstCost::cost_sequence(child->get_card(),
nextval_seq_ids_.count(),
opt_ctx);
cost_ = op_cost_ + child->get_cost();
card_ = child->get_card();
}
}
return ret;
}
int ObLogSequence::est_width()
{
int ret = OB_SUCCESS;
ObLogicalOperator *child = NULL;
double width = 0.0;
if (0 == get_num_of_child()) {
width = 0.0;
} else if (OB_ISNULL(child = get_child(ObLogicalOperator::first_child))) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("get unexpected null", K(child), K(ret));
} else {
width = child->get_width() + nextval_seq_ids_.count() * 8;
}
set_width(width);
return ret;
}
int ObLogSequence::do_re_est_cost(EstimateCostInfo ¶m, double &card, double &op_cost, double &cost)
{
int ret = OB_SUCCESS;
double child_card = 0.0;
double child_cost = 0.0;
ObLogicalOperator *child = get_child(ObLogicalOperator::first_child);
if (0 == get_num_of_child()) {
card = get_card();
op_cost = get_op_cost();
cost = get_cost();
} else if (OB_ISNULL(get_plan()) || OB_ISNULL(child)) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("get unexpected null", K(ret), K(get_plan()), K(child));
} else if (OB_FAIL(SMART_CALL(child->re_est_cost(param, child_card, child_cost)))) {
LOG_WARN("failed to re est cost", K(ret));
} else {
op_cost = ObOptEstCost::cost_sequence(child_card,
nextval_seq_ids_.count(),
get_plan()->get_optimizer_context());
cost = child_cost + op_cost;
card = child_card;
}
return ret;
}
int ObLogSequence::compute_op_parallel_and_server_info()
{
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;
}
int ObLogSequence::is_my_fixed_expr(const ObRawExpr *expr, bool &is_fixed)
{
int ret = OB_SUCCESS;
is_fixed = false;
ObSEArray<ObRawExpr*, 8> sequence_exprs;
if (OB_ISNULL(get_stmt())) {
ret = OB_ERR_UNEXPECTED;
LOG_WARN("stmt is null", K(ret), K(get_stmt()));
} else if (OB_FAIL(get_stmt()->get_sequence_exprs(sequence_exprs))) {
LOG_WARN("fail get sequence exprs", K(ret));
} else {
is_fixed = ObOptimizerUtil::find_item(sequence_exprs, expr);
}
return ret;
}