SimpleCloudNotifier/scnserver/db/impl/primary/compat.go

101 lines
1.8 KiB
Go
Raw Normal View History

package primary
import (
"database/sql"
"errors"
"gogs.mikescher.com/BlackForestBytes/goext/sq"
)
func (db *Database) CreateCompatID(ctx TxContext, idtype string, newid string) (int64, error) {
tx, err := ctx.GetOrCreateTransaction(db)
if err != nil {
return 0, err
}
rows, err := tx.Query(ctx, "SELECT COALESCE(MAX(old), 0) FROM compat_ids", sq.PP{})
if err != nil {
return 0, err
}
if !rows.Next() {
return 0, errors.New("failed to query MAX(old)")
}
var oldid int64
err = rows.Scan(&oldid)
if err != nil {
return 0, err
}
oldid++
_, err = tx.Exec(ctx, "INSERT INTO compat_ids (old, new, type) VALUES (:old, :new, :typ)", sq.PP{
"old": oldid,
"new": newid,
"typ": idtype,
})
if err != nil {
return 0, err
}
return oldid, nil
}
func (db *Database) ConvertCompatID(ctx TxContext, oldid int64, idtype string) (*string, error) {
tx, err := ctx.GetOrCreateTransaction(db)
if err != nil {
return nil, err
}
rows, err := tx.Query(ctx, "SELECT new FROM compat_ids WHERE old = :old AND type = :typ", sq.PP{
"old": oldid,
"typ": idtype,
})
if err != nil {
return nil, err
}
if !rows.Next() {
return nil, nil
}
var newid string
err = rows.Scan(&newid)
if err == sql.ErrNoRows {
return nil, nil
}
if err != nil {
return nil, err
}
return &newid, nil
}
func (db *Database) ConvertToCompatID(ctx TxContext, newid string) (*int64, *string, error) {
tx, err := ctx.GetOrCreateTransaction(db)
if err != nil {
return nil, nil, err
}
rows, err := tx.Query(ctx, "SELECT old, type FROM compat_ids WHERE new = :new", sq.PP{"new": newid})
if err != nil {
return nil, nil, err
}
if !rows.Next() {
return nil, nil, nil
}
var oldid int64
var idtype string
err = rows.Scan(&oldid, &idtype)
if err == sql.ErrNoRows {
return nil, nil, nil
}
if err != nil {
return nil, nil, err
}
return &oldid, &idtype, nil
}