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
138
139
140
141
142
143
144
145
146
147
148
149
|
// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements. See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership. The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License. You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package scalar
{{range .In}}
type {{.Name}} struct {
scalar
Value {{.Type}}
}
func (s *{{.Name}}) Data() []byte {
return (*[arrow.{{.Name}}SizeBytes]byte)(unsafe.Pointer(&s.Value))[:]
}
func (s *{{.Name}}) equals(rhs Scalar) bool {
return s.Value == rhs.(*{{.Name}}).Value
}
{{if or (eq .Name "Float32") (eq .Name "Float64") }}
func (s *{{.Name}}) approxEquals(rhs Scalar, eq equalOption) bool {
v1 := float64(s.Value)
v2 := float64(rhs.(*{{.Name}}).Value)
switch {
case eq.nansEq:
return v1 == v2 || math.Abs(v1-v2) <= eq.atol || (math.IsNaN(v1) && math.IsNaN(v2))
default:
return v1 == v2 || math.Abs(v1-v2) <= eq.atol
}
}
{{end}}
func (s *{{.Name}}) value() interface{} {
return s.Value
}
func (s *{{.Name}}) String() string {
if !s.Valid {
return "null"
}
val, err := s.CastTo(arrow.BinaryTypes.String)
if err != nil {
return "..."
}
return string(val.(*String).Value.Bytes())
}
func (s *{{.Name}}) CastTo(dt arrow.DataType) (Scalar, error) {
if !s.Valid {
return MakeNullScalar(dt), nil
}
r, ok := numericMap[dt.ID()]
if ok {
return convertToNumeric(reflect.ValueOf(s.Value), r.valueType, r.scalarFunc), nil
}
switch dt := dt.(type) {
case *arrow.BooleanType:
return NewBooleanScalar(s.Value != 0), nil
case *arrow.Date32Type:
return NewDate32Scalar(arrow.Date32(s.Value)), nil
case *arrow.Date64Type:
return NewDate64Scalar(arrow.Date64(s.Value)), nil
case *arrow.Time32Type:
return NewTime32Scalar(arrow.Time32(s.Value), dt), nil
case *arrow.Time64Type:
return NewTime64Scalar(arrow.Time64(s.Value), dt), nil
case *arrow.TimestampType:
return NewTimestampScalar(arrow.Timestamp(s.Value), dt), nil
case *arrow.MonthIntervalType:
return NewMonthIntervalScalar(arrow.MonthInterval(s.Value)), nil
case *arrow.StringType:
return NewStringScalar(fmt.Sprintf("%v", s.Value)), nil
case *arrow.LargeStringType:
return NewLargeStringScalar(fmt.Sprintf("%v", s.Value)), nil
case *arrow.Decimal128Type:
{{if eq .Name "Float32" -}}
v, err := decimal128.FromFloat32(s.Value, dt.Precision, dt.Scale)
if err != nil {
return nil, err
}
return NewDecimal128Scalar(v, dt), nil
{{else if eq .Name "Float64" -}}
v, err := decimal128.FromFloat64(s.Value, dt.Precision, dt.Scale)
if err != nil {
return nil, err
}
return NewDecimal128Scalar(v, dt), nil
{{else if eq .Name "Uint64" -}}
return NewDecimal128Scalar(decimal128.FromU64(s.Value), dt), nil
{{else -}}
return NewDecimal128Scalar(decimal128.FromI64(int64(s.Value)), dt), nil
{{end -}}
case *arrow.Decimal256Type:
{{if eq .Name "Float32" -}}
v, err := decimal256.FromFloat32(s.Value, dt.Precision, dt.Scale)
if err != nil {
return nil, err
}
return NewDecimal256Scalar(v, dt), nil
{{else if eq .Name "Float64" -}}
v, err := decimal256.FromFloat64(s.Value, dt.Precision, dt.Scale)
if err != nil {
return nil, err
}
return NewDecimal256Scalar(v, dt), nil
{{else if eq .Name "Uint64" -}}
return NewDecimal256Scalar(decimal256.FromU64(s.Value), dt), nil
{{else -}}
return NewDecimal256Scalar(decimal256.FromI64(int64(s.Value)), dt), nil
{{end -}}
}
return nil, fmt.Errorf("invalid scalar cast from type {{.Type}} to type %s", dt)
}
func New{{.Name}}Scalar(val {{.Type}}) *{{.Name}} {
return &{{.Name}}{scalar{Type: arrow.PrimitiveTypes.{{.Name}}, Valid: true}, val}
}
{{end}}
var numericMap = map[arrow.Type]struct{
scalarFunc reflect.Value
valueType reflect.Type
}{
{{range .In -}}
arrow.{{.Name|upper}}: {scalarFunc: reflect.ValueOf(New{{.Name}}Scalar), valueType: reflect.TypeOf({{.Type}}(0)) },
{{end}}
}
var (
{{range .In -}}
_ Scalar = (*{{.Name}})(nil)
{{end}}
)
|
