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db_version.go
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db_version.go
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package go_ora
import (
"errors"
"fmt"
"github.com/sijms/go-ora/network"
)
type DBVersion struct {
Info string
Text string
Number uint16
MajorVersion int
MinorVersion int
PatchsetVersion int
isDb10gR20OrHigher bool
isDb11gR10OrHigher bool
}
func GetDBVersion(session *network.Session) (*DBVersion, error) {
session.ResetBuffer()
session.PutBytes(3, 0x3B, 0)
session.PutUint(1, 1, false, false)
session.PutUint(0x100, 2, true, true)
session.PutUint(1, 1, false, false)
session.PutUint(1, 1, false, false)
err := session.Write()
if err != nil {
return nil, err
}
msg, err := session.GetInt(1, false, false)
if msg != 8 {
return nil, errors.New(fmt.Sprintf("message code error: received code %d and expected code is 8", msg))
}
info, err := session.GetDlc()
//length, err := session.GetInt(2, true, true)
//if err != nil {
// return nil, err
//}
//info, err := session.GetBytes(int(length))
//if err != nil {
// return nil, err
//}
number, err := session.GetInt(4, true, true)
if err != nil {
return nil, err
}
version := (number>>24&0xFF)*1000 + (number>>20&0xF)*100 + (number>>12&0xF)*10 + (number >> 8 & 0xF)
text := fmt.Sprintf("%d.%d.%d.%d.%d", number>>24&0xFF, number>>20&0xF,
number>>12&0xF, number>>8&0xF, number&0xFF)
ret := &DBVersion{
Info: string(info),
Text: text,
Number: uint16(version),
MajorVersion: int(number >> 24 & 0xFF),
MinorVersion: int(number >> 20 & 0xF),
PatchsetVersion: int(number >> 8 & 0xF),
}
if ret.MajorVersion > 10 || (ret.MajorVersion == 10 && ret.MinorVersion >= 2) {
ret.isDb10gR20OrHigher = true
}
if ret.MajorVersion > 11 || (ret.MajorVersion == 11 && ret.MinorVersion >= 1) {
ret.isDb11gR10OrHigher = true
}
return ret, nil
}