forked from tsuna/gohbase
/
comparator.go
228 lines (195 loc) · 6.33 KB
/
comparator.go
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
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
// Copyright (C) 2015 The GoHBase Authors. All rights reserved.
// This file is part of GoHBase.
// Use of this source code is governed by the Apache License 2.0
// that can be found in the COPYING file.
package filter
import (
"errors"
"github.com/clarax/gohbase/pb"
"google.golang.org/protobuf/proto"
)
const comparatorPath = "org.apache.hadoop.hbase.filter."
// BitComparatorBitwiseOp is TODO
type BitComparatorBitwiseOp int32
func (o BitComparatorBitwiseOp) isValid() bool {
return o >= 1 && o <= 3
}
// Constants are TODO
const (
BitComparatorAND BitComparatorBitwiseOp = 1
BitComparatorOR BitComparatorBitwiseOp = 2
BitComparatorXOR BitComparatorBitwiseOp = 3
)
// Ensure our types implement Comparator correctly.
var _ Comparator = (*BinaryComparator)(nil)
var _ Comparator = (*LongComparator)(nil)
var _ Comparator = (*BinaryPrefixComparator)(nil)
var _ Comparator = (*BitComparator)(nil)
var _ Comparator = (*NullComparator)(nil)
var _ Comparator = (*RegexStringComparator)(nil)
var _ Comparator = (*SubstringComparator)(nil)
// Comparator is TODO
type Comparator interface {
// ConstructPBComparator creates and returns the comparator encoded in a
// pb.Comparator type
ConstructPBComparator() (*pb.Comparator, error)
}
// ByteArrayComparable is used across many Comparators.
type ByteArrayComparable pb.ByteArrayComparable
// NewByteArrayComparable is TODO
func NewByteArrayComparable(value []byte) *ByteArrayComparable {
return &ByteArrayComparable{
Value: value,
}
}
func (b *ByteArrayComparable) toPB() *pb.ByteArrayComparable {
return (*pb.ByteArrayComparable)(b)
}
// BinaryComparator is TODO
type BinaryComparator pb.BinaryComparator
// NewBinaryComparator is TODO
func NewBinaryComparator(comparable *ByteArrayComparable) *BinaryComparator {
return &BinaryComparator{
Comparable: comparable.toPB(),
}
}
// ConstructPBComparator is TODO
func (c *BinaryComparator) ConstructPBComparator() (*pb.Comparator, error) {
serializedComparator, err := proto.Marshal((*pb.BinaryComparator)(c))
if err != nil {
return nil, err
}
comparator := &pb.Comparator{
Name: proto.String(comparatorPath + "BinaryComparator"),
SerializedComparator: serializedComparator,
}
return comparator, nil
}
// LongComparator is TODO
type LongComparator pb.LongComparator
// NewLongComparator is TODO
func NewLongComparator(comparable *ByteArrayComparable) *LongComparator {
return &LongComparator{
Comparable: comparable.toPB(),
}
}
// ConstructPBComparator is TODO
func (c *LongComparator) ConstructPBComparator() (*pb.Comparator, error) {
serializedComparator, err := proto.Marshal((*pb.LongComparator)(c))
if err != nil {
return nil, err
}
comparator := &pb.Comparator{
Name: proto.String(comparatorPath + "LongComparator"),
SerializedComparator: serializedComparator,
}
return comparator, nil
}
// BinaryPrefixComparator is TODO
type BinaryPrefixComparator pb.BinaryPrefixComparator
// NewBinaryPrefixComparator is TODO
func NewBinaryPrefixComparator(comparable *ByteArrayComparable) *BinaryPrefixComparator {
return &BinaryPrefixComparator{
Comparable: comparable.toPB(),
}
}
// ConstructPBComparator is TODO
func (c *BinaryPrefixComparator) ConstructPBComparator() (*pb.Comparator, error) {
serializedComparator, err := proto.Marshal((*pb.BinaryPrefixComparator)(c))
if err != nil {
return nil, err
}
comparator := &pb.Comparator{
Name: proto.String(comparatorPath + "BinaryPrefixComparator"),
SerializedComparator: serializedComparator,
}
return comparator, nil
}
// BitComparator is TODO
type BitComparator pb.BitComparator
// NewBitComparator is TODO
func NewBitComparator(bitwiseOp BitComparatorBitwiseOp,
comparable *ByteArrayComparable) *BitComparator {
op := pb.BitComparator_BitwiseOp(bitwiseOp)
return &BitComparator{
Comparable: comparable.toPB(),
BitwiseOp: &op,
}
}
// ConstructPBComparator is TODO
func (c *BitComparator) ConstructPBComparator() (*pb.Comparator, error) {
if !BitComparatorBitwiseOp(*c.BitwiseOp).isValid() {
return nil, errors.New("Invalid bitwise operator specified")
}
serializedComparator, err := proto.Marshal((*pb.BitComparator)(c))
if err != nil {
return nil, err
}
comparator := &pb.Comparator{
Name: proto.String(comparatorPath + "BitComparator"),
SerializedComparator: serializedComparator,
}
return comparator, nil
}
// NullComparator is TODO
type NullComparator struct{}
// NewNullComparator is TODO
func NewNullComparator() NullComparator {
return NullComparator{}
}
// ConstructPBComparator is TODO
func (c NullComparator) ConstructPBComparator() (*pb.Comparator, error) {
serializedComparator, err := proto.Marshal(&pb.NullComparator{})
if err != nil {
return nil, err
}
comparator := &pb.Comparator{
Name: proto.String(comparatorPath + "NullComparator"),
SerializedComparator: serializedComparator,
}
return comparator, nil
}
// RegexStringComparator is TODO
type RegexStringComparator pb.RegexStringComparator
// NewRegexStringComparator is TODO
func NewRegexStringComparator(pattern string, patternFlags int32,
charset, engine string) *RegexStringComparator {
return &RegexStringComparator{
Pattern: proto.String(pattern),
PatternFlags: proto.Int32(patternFlags),
Charset: proto.String(charset),
Engine: proto.String(engine),
}
}
// ConstructPBComparator is TODO
func (c *RegexStringComparator) ConstructPBComparator() (*pb.Comparator, error) {
serializedComparator, err := proto.Marshal((*pb.RegexStringComparator)(c))
if err != nil {
return nil, err
}
comparator := &pb.Comparator{
Name: proto.String(comparatorPath + "RegexStringComparator"),
SerializedComparator: serializedComparator,
}
return comparator, nil
}
// SubstringComparator is TODO
type SubstringComparator pb.SubstringComparator
// NewSubstringComparator is TODO
func NewSubstringComparator(substr string) *SubstringComparator {
return &SubstringComparator{
Substr: proto.String(substr),
}
}
// ConstructPBComparator is TODO
func (c *SubstringComparator) ConstructPBComparator() (*pb.Comparator, error) {
serializedComparator, err := proto.Marshal((*pb.SubstringComparator)(c))
if err != nil {
return nil, err
}
comparator := &pb.Comparator{
Name: proto.String(comparatorPath + "SubstringComparator"),
SerializedComparator: serializedComparator,
}
return comparator, nil
}