-
Notifications
You must be signed in to change notification settings - Fork 0
/
database.go
73 lines (62 loc) · 1.31 KB
/
database.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
package dibbi
import "errors"
// ColumnType defines the available column types
type ColumnType uint
const (
TextType ColumnType = iota
IntType
BoolType
)
func (c ColumnType) String() string {
switch c {
case TextType:
return "TextType"
case IntType:
return "IntType"
case BoolType:
return "BoolType"
default:
return "Error"
}
}
type Cell interface {
AsText() *string
AsInt() *int32
AsBool() *bool
}
type Results struct {
Columns []ResultColumn
Rows [][]Cell
}
type ResultColumn struct {
Type ColumnType
Name string
NotNull bool
}
type Index struct {
Name string
Exp string
Type string
Unique bool
PrimaryKey bool
}
var (
ErrTableDoesNotExist = errors.New("table does not exist")
ErrColumnDoesNotExist = errors.New("column does not exist")
ErrInvalidSelectItem = errors.New("select item is not valid")
ErrInvalidDatatype = errors.New("invalid datatype")
ErrMissingValues = errors.New("missing values")
)
type TableMetadata struct {
Name string
Columns []ResultColumn
Indexes []Index
}
type Database interface {
CreateTable(*createTableStatement) error
//DropTable(*dropTableStatement) error
//CreateIndex(*createIndexStatement) error
Insert(*insertStatement) error
Select(*selectStatement) (*Results, error)
//GetTables() []TableMetadata
}