forked from oceanbase/oceanbase
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathob_expr_atan2.cpp
More file actions
137 lines (129 loc) · 4.62 KB
/
Copy pathob_expr_atan2.cpp
File metadata and controls
137 lines (129 loc) · 4.62 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
136
137
/**
* 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_ENG
#include "ob_expr_atan2.h"
#include "sql/engine/expr/ob_expr_util.h"
#include "share/object/ob_obj_cast.h"
#include "objit/common/ob_item_type.h"
//#include "sql/engine/expr/ob_expr_promotion_util.h"
#include "sql/session/ob_sql_session_info.h"
#include <math.h>
using namespace oceanbase::common;
using namespace oceanbase::sql;
namespace oceanbase
{
namespace sql
{
ObExprAtan2::ObExprAtan2(ObIAllocator &alloc)
: ObFuncExprOperator(alloc, T_FUN_SYS_ATAN2, N_ATAN2, ONE_OR_TWO, VALID_FOR_GENERATED_COL, NOT_ROW_DIMENSION)
{
param_lazy_eval_ = true;
}
ObExprAtan2::~ObExprAtan2()
{
}
int ObExprAtan2::calc_result_typeN(ObExprResType &type,
ObExprResType *types,
int64_t type_num,
common::ObExprTypeCtx &type_ctx) const
{
int ret = OB_SUCCESS;
if (lib::is_oracle_mode() && OB_UNLIKELY(NULL == types || type_num != 2)) {
ret = OB_ERR_PARAM_SIZE;
LOG_WARN("Invalid argument.", K(ret), K(types), K(type_num));
} else if (lib::is_mysql_mode()
&& OB_UNLIKELY(NULL == types || type_num <= 0 || type_num > 2)) {
ret = OB_ERR_PARAM_SIZE;
LOG_WARN("Invalid argument.", K(ret), K(types), K(type_num));
} else {
if (1 == type_num) {
ret = calc_trig_function_result_type1(type, types[0], type_ctx);
} else {
ret = calc_trig_function_result_type2(type, types[0], types[1], type_ctx);
}
}
return ret;
}
int calc_atan2_expr(const ObExpr &expr, ObEvalCtx &ctx, ObDatum &res_datum)
{
int ret = OB_SUCCESS;
if (1 == expr.arg_cnt_) {
// only mysql mode
ObDatum *radian = NULL;
if (OB_FAIL(expr.args_[0]->eval(ctx, radian))) {
LOG_WARN("eval radian arg failed", K(ret), K(expr));
} else if (radian->is_null()) {
res_datum.set_null();
} else if (ObDoubleType == expr.args_[0]->datum_meta_.type_) {
const double arg = radian->get_double();
res_datum.set_double(atan(arg));
}
} else { // 2 == expr.arg_cnt_
// calc atan2(y/x)
ObExpr *arg0 = expr.args_[0];
ObExpr *arg1 = expr.args_[1];
ObDatum *y = NULL;
ObDatum *x = NULL;
if (OB_FAIL(arg0->eval(ctx, y))) {
LOG_WARN("eval arg failed", K(ret), K(expr), KP(y));
} else if (y->is_null()) {
/* arg is already be cast to number type, no need to is_null_oracle */
res_datum.set_null();
} else if (OB_FAIL(arg1->eval(ctx, x))) {
LOG_WARN("eval arg failed", K(ret), K(expr), KP(x));
} else if (x->is_null()) {
res_datum.set_null();
} else if (ObNumberType == arg0->datum_meta_.type_
&& ObNumberType == arg1->datum_meta_.type_) {
number::ObNumber y_nmb(y->get_number());
number::ObNumber x_nmb(x->get_number());
if (y_nmb.is_zero() && x_nmb.is_zero()) {
ret = OB_NUMERIC_OVERFLOW;
LOG_WARN("calc atan2(0,0) failed", K(ret));
} else {
number::ObNumber res_nmb;
ObEvalCtx::TempAllocGuard alloc_guard(ctx);
if (OB_FAIL(y_nmb.atan2(x_nmb, res_nmb, alloc_guard.get_allocator()))) {
LOG_WARN("calc atan2 failed", K(ret), K(y_nmb), K(x_nmb), K(expr));
} else {
res_datum.set_number(res_nmb);
}
}
} else if (ObDoubleType == arg0->datum_meta_.type_
&& ObDoubleType == arg1->datum_meta_.type_) {
res_datum.set_double(atan2(y->get_double(), x->get_double()));
} else {
ret = OB_ERR_UNEXPECTED;
}
}
return ret;
}
int ObExprAtan2::cg_expr(ObExprCGCtx &expr_cg_ctx, const ObRawExpr &raw_expr,
ObExpr &rt_expr) const
{
int ret = OB_SUCCESS;
UNUSED(expr_cg_ctx);
UNUSED(raw_expr);
if (lib::is_oracle_mode() && OB_UNLIKELY(2 != rt_expr.arg_cnt_)) {
ret = OB_ERR_PARAM_SIZE;
LOG_WARN("invalid arg cnt of expr", K(ret), K(rt_expr));
} else if (lib::is_mysql_mode()
&& OB_UNLIKELY(1 != rt_expr.arg_cnt_ && 2 != rt_expr.arg_cnt_)) {
ret = OB_ERR_PARAM_SIZE;
LOG_WARN("invalid arg cnt of expr", K(ret), K(rt_expr));
} else {
rt_expr.eval_func_ = calc_atan2_expr;
}
return ret;
}
} //namespace sql
} //namespace oceanbase