forked from manishrjain/gocrud
/
usage_test.go
147 lines (129 loc) · 3.12 KB
/
usage_test.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
package usage_test
import (
"fmt"
"io/ioutil"
"time"
_ "github.com/manishrjain/gocrud/drivers/leveldb"
_ "github.com/manishrjain/gocrud/drivers/memsearch"
"github.com/manishrjain/gocrud/indexer"
"github.com/manishrjain/gocrud/req"
"github.com/manishrjain/gocrud/search"
"github.com/manishrjain/gocrud/store"
"github.com/manishrjain/gocrud/x"
)
var log = x.Log("usage")
func ExampleStore() {
path, err := ioutil.TempDir("", "gocrudldb_")
if err != nil {
x.LogErr(log, err).Fatal("Opening file")
return
}
store.Get().Init(path) // leveldb
// Update some data.
c := req.NewContext(10) // 62^10 permutations
err = store.NewUpdate("Root", "bigbang").SetSource("author").
Set("when", "13.8 billion years ago").Set("explosive", true).Execute(c)
if err != nil {
x.LogErr(log, err).Fatal("Commiting update")
return
}
// Retrieve that data
result, err := store.NewQuery("bigbang").Run()
if err != nil {
x.LogErr(log, err).Fatal("While querying store")
return
}
fmt.Println(result.Kind) // Root
fmt.Println(result.Id) // bigbang
data := result.ToMap()
{
val, ok := data["explosive"]
if !ok {
log.Fatal("creator should be set")
return
}
fmt.Println(val) // true
}
{
val, ok := data["when"]
if !ok {
log.Fatal("creator should be set")
return
}
fmt.Println(val)
}
// Output:
// Root
// bigbang
// true
// 13.8 billion years ago
}
type SimpleIndexer struct {
}
func (si SimpleIndexer) OnUpdate(e x.Entity) (result []x.Entity) {
result = append(result, e)
return
}
func (si SimpleIndexer) Regenerate(e x.Entity) (rdoc x.Doc) {
rdoc.Id = e.Id
rdoc.Kind = e.Kind
rdoc.NanoTs = time.Now().UnixNano()
result, err := store.NewQuery(e.Id).Run()
if err != nil {
x.LogErr(log, err).Fatal("While querying store")
return
}
data := result.ToMap()
rdoc.Data = data
return
}
var particles = [...]string{
"up", "charm", "top", "gluon", "down", "strange",
"bottom", "photon", "boson", "higgs boson",
}
func ExampleSearch() {
path, err := ioutil.TempDir("", "gocrudldb_")
if err != nil {
x.LogErr(log, err).Fatal("Opening file")
return
}
store.Get().Init(path) // leveldb
search.Get().Init() // memsearch
// Run indexer to update entities in search engine in real time.
c := req.NewContextWithUpdates(10, 100)
indexer.Register("Child", SimpleIndexer{})
indexer.Run(c, 2)
u := store.NewUpdate("Root", "bigbang").SetSource("author")
for i := 0; i < 10; i++ {
child := u.AddChild("Child").Set("pos", i).Set("particle", particles[i])
if i == 5 {
child.MarkDeleted() // This shouldn't be retrieved anymore.
}
}
if err = u.Execute(c); err != nil {
x.LogErr(log, err).Fatal("While updating")
return
}
indexer.WaitForDone(c) // Block until indexing is done.
docs, err := search.Get().NewQuery("Child").Order("-data.pos").Run()
if err != nil {
x.LogErr(log, err).Fatal("While searching")
return
}
fmt.Println("docs:", len(docs))
for _, doc := range docs {
m := doc.Data.(map[string]interface{})
fmt.Println(m["pos"], m["particle"])
}
// Output:
// docs: 9
// 9 higgs boson
// 8 boson
// 7 photon
// 6 bottom
// 4 down
// 3 gluon
// 2 top
// 1 charm
// 0 up
}