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// Transaction Manager requests
// http://msdn.microsoft.com/en-us/library/dd339887.aspx
package mssql
import (
"encoding/binary"
)
const (
tmGetDtcAddr = 0
tmPropagateXact = 1
tmBeginXact = 5
tmPromoteXact = 6
tmCommitXact = 7
tmRollbackXact = 8
tmSaveXact = 9
)
func sendBeginXact(buf *tdsBuffer, headers []headerStruct, isolation uint8,
name string) (err error) {
buf.BeginPacket(packTransMgrReq)
writeAllHeaders(buf, headers)
var rqtype uint16 = tmBeginXact
err = binary.Write(buf, binary.LittleEndian, &rqtype)
if err != nil {
return
}
err = binary.Write(buf, binary.LittleEndian, &isolation)
if err != nil {
return
}
err = writeBVarChar(buf, name)
if err != nil {
return
}
return buf.FinishPacket()
}
const (
fBeginXact = 1
)
func sendCommitXact(buf *tdsBuffer, headers []headerStruct, name string, flags uint8, isolation uint8, newname string) error {
buf.BeginPacket(packTransMgrReq)
writeAllHeaders(buf, headers)
var rqtype uint16 = tmCommitXact
err := binary.Write(buf, binary.LittleEndian, &rqtype)
if err != nil {
return err
}
err = writeBVarChar(buf, name)
if err != nil {
return err
}
err = binary.Write(buf, binary.LittleEndian, &flags)
if err != nil {
return err
}
if flags&fBeginXact != 0 {
err = binary.Write(buf, binary.LittleEndian, &isolation)
if err != nil {
return err
}
err = writeBVarChar(buf, name)
if err != nil {
return err
}
}
return buf.FinishPacket()
}
func sendRollbackXact(buf *tdsBuffer, headers []headerStruct, name string, flags uint8, isolation uint8, newname string) error {
buf.BeginPacket(packTransMgrReq)
writeAllHeaders(buf, headers)
var rqtype uint16 = tmRollbackXact
err := binary.Write(buf, binary.LittleEndian, &rqtype)
if err != nil {
return err
}
err = writeBVarChar(buf, name)
if err != nil {
return err
}
err = binary.Write(buf, binary.LittleEndian, &flags)
if err != nil {
return err
}
if flags&fBeginXact != 0 {
err = binary.Write(buf, binary.LittleEndian, &isolation)
if err != nil {
return err
}
err = writeBVarChar(buf, name)
if err != nil {
return err
}
}
return buf.FinishPacket()
}
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