forked from rethinkdb/rethinkdb-go
-
Notifications
You must be signed in to change notification settings - Fork 0
/
query.go
196 lines (175 loc) · 5.03 KB
/
query.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
package gorethink
import (
"fmt"
"strconv"
"strings"
p "github.com/dancannon/gorethink/ql2"
)
type OptArgs interface {
toMap() map[string]interface{}
}
type termsList []Term
type termsObj map[string]Term
type Term struct {
name string
rootTerm bool
termType p.Term_TermType
data interface{}
args []Term
optArgs map[string]Term
}
// build takes the query tree and prepares it to be sent as a JSON
// expression
func (t Term) build() interface{} {
switch t.termType {
case p.Term_DATUM:
return t.data
case p.Term_MAKE_OBJ:
res := map[string]interface{}{}
for k, v := range t.optArgs {
res[k] = v.build()
}
return res
case p.Term_BINARY:
if len(t.args) == 0 {
return map[string]interface{}{
"$reql_type$": "BINARY",
"data": t.data,
}
}
}
args := []interface{}{}
optArgs := map[string]interface{}{}
for _, v := range t.args {
args = append(args, v.build())
}
for k, v := range t.optArgs {
optArgs[k] = v.build()
}
return []interface{}{t.termType, args, optArgs}
}
// String returns a string representation of the query tree
func (t Term) String() string {
switch t.termType {
case p.Term_MAKE_ARRAY:
return fmt.Sprintf("[%s]", strings.Join(argsToStringSlice(t.args), ", "))
case p.Term_MAKE_OBJ:
return fmt.Sprintf("{%s}", strings.Join(optArgsToStringSlice(t.optArgs), ", "))
case p.Term_FUNC:
// Get string representation of each argument
args := []string{}
for _, v := range t.args[0].args {
args = append(args, fmt.Sprintf("var_%d", v.data))
}
return fmt.Sprintf("func(%s r.Term) r.Term { return %s }",
strings.Join(args, ", "),
t.args[1].String(),
)
case p.Term_VAR:
return fmt.Sprintf("var_%s", t.args[0])
case p.Term_IMPLICIT_VAR:
return "r.Row"
case p.Term_DATUM:
switch v := t.data.(type) {
case string:
return strconv.Quote(v)
default:
return fmt.Sprintf("%v", v)
}
case p.Term_BINARY:
if len(t.args) == 0 {
return fmt.Sprintf("r.binary(<data>)")
}
}
if t.rootTerm {
return fmt.Sprintf("r.%s(%s)", t.name, strings.Join(allArgsToStringSlice(t.args, t.optArgs), ", "))
}
return fmt.Sprintf("%s.%s(%s)", t.args[0].String(), t.name, strings.Join(allArgsToStringSlice(t.args[1:], t.optArgs), ", "))
}
type WriteResponse struct {
Errors int
Created int
Inserted int
Updated int
Unchanged int
Replaced int
Renamed int
Deleted int
GeneratedKeys []string `gorethink:"generated_keys"`
FirstError string `gorethink:"first_error"` // populated if Errors > 0
Changes []WriteChanges
}
type WriteChanges struct {
NewValue interface{} `gorethink:"new_val"`
OldValue interface{} `gorethink:"old_val"`
}
type RunOpts struct {
Db interface{} `gorethink:"db,omitempty"`
Profile interface{} `gorethink:"profile,omitempty"`
UseOutdated interface{} `gorethink:"use_outdated,omitempty"`
NoReply interface{} `gorethink:"noreply,omitempty"`
ArrayLimit interface{} `gorethink:"array_limit,omitempty"`
TimeFormat interface{} `gorethink:"time_format,omitempty"`
GroupFormat interface{} `gorethink:"group_format,omitempty"`
BinaryFormat interface{} `gorethink:"binary_format,omitempty"`
GeometryFormat interface{} `gorethink:"geometry_format,omitempty"`
BatchConf BatchOpts `gorethink:"batch_conf,omitempty"`
}
type BatchOpts struct {
MinBatchRows interface{} `gorethink:"min_batch_rows,omitempty"`
MaxBatchRows interface{} `gorethink:"max_batch_rows,omitempty"`
MaxBatchBytes interface{} `gorethink:"max_batch_bytes,omitempty"`
MaxBatchSeconds interface{} `gorethink:"max_batch_seconds,omitempty"`
FirstBatchScaledownFactor interface{} `gorethink:"first_batch_scaledown_factor,omitempty"`
}
func (o *RunOpts) toMap() map[string]interface{} {
return optArgsToMap(o)
}
// Run runs a query using the given connection.
//
// rows, err := query.Run(sess)
// if err != nil {
// // error
// }
//
// var doc MyDocumentType
// for rows.Next(&doc) {
// // Do something with document
// }
func (t Term) Run(s *Session, optArgs ...RunOpts) (*Cursor, error) {
opts := map[string]interface{}{}
if len(optArgs) >= 1 {
opts = optArgs[0].toMap()
}
return s.startQuery(t, opts)
}
// RunWrite runs a query using the given connection but unlike Run automatically
// scans the result into a variable of type WriteResponse. This function should be used
// if you are running a write query (such as Insert, Update, TableCreate, etc...)
//
// res, err := r.Db("database").Table("table").Insert(doc).RunWrite(sess, r.RunOpts{
// NoReply: true,
// })
func (t Term) RunWrite(s *Session, optArgs ...RunOpts) (WriteResponse, error) {
var response WriteResponse
res, err := t.Run(s, optArgs...)
if err == nil {
err = res.One(&response)
}
return response, err
}
// Exec runs the query but does not return the result.
func (t Term) Exec(s *Session, optArgs ...RunOpts) error {
res, err := t.Run(s, optArgs...)
if err != nil {
return err
}
if res == nil {
return nil
}
err = res.Close()
if err != nil {
return err
}
return nil
}