/
newDBformat.go
84 lines (73 loc) · 1.56 KB
/
newDBformat.go
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package main
import (
"fmt"
"github.com/cznic/exp/dbm"
"os"
)
var o = &dbm.Options{}
type DBM struct {
db *dbm.DB
}
const DBMname = "DBM2.db"
func NewDBM(name string) (d *DBM) {
mydb := dbConnect(name)
d = &DBM{
mydb,
}
return d
}
func checkDbExist(filename string) bool {
if _, err := os.Stat(filename); os.IsNotExist(err) {
//fmt.Printf("no such file or directory: %s", filename)
return false
} else {
return true
}
}
func dbConnect(name string) *dbm.DB {
if checkDbExist(name) != true {
db, err := dbm.Create(name, o)
if err != nil {
fmt.Printf("Error: dbm can't create\n")
panic(err)
} else {
return db
}
} else {
db, err := dbm.Open(name, o)
if err != nil {
fmt.Printf("Error: dbm can't open\n")
panic(err)
} else {
return db
}
}
return nil
}
func main() {
mydb := NewDBM(DBMname).db
defer mydb.Close()
test, _ := mydb.Array("test")
test.Set(1, "Peter", "Chan")
test.Set(2, "Amy", "Lee")
test.Set(3, "Dik", "Li")
//test2, _ := mydb.Array("test", "Peter", "Chan")
//test2, _ := test.Array("Peter", "Chan")
test2, _ := mydb.Array("test", "Amy")
val, _ := test2.Get("Lee")
array, _ := dbm.MemArray("test")
fmt.Printf("value=%v\n", val.(int64))
enum, _ := array.Enumerator(true)
_, value, _ := enum.Next()
if value[0] == nil {
fmt.Printf("Not OK")
} else {
fmt.Printf("%v", value[0].(int64))
}
// enum, _ := test2.Enumerator(true)
// key, value, _ := enum.Next()
// key, value, _ = enum.Next()
// str := key[0].(string)
// integer := value[0].(int64)
// fmt.Printf("key=%v\nvalue=%v\n", str, integer)
}