void OnLockExpired(object sender, LockExpiryEventArgs e)
{
lock (locked)
{
DataUpdateLock updateLock = updateLocks[e.UpdateLockId];
updateLocks.Remove(e.UpdateLockId);
locked.Remove(updateLock.Data);
}
}
public void UpdateData(XmlDocument updatedData, DataUpdateLock dataUpdateLock)
{
lock (updateLocks)
{
if (!updateLocks.ContainsKey(dataUpdateLock.Id))
{
throw new InvalidUpdateRequest("Update Denied: Data has not been locked, or lock has expired");
}
catalogSource.UpdateData(updatedData, dataUpdateLock.Data);
}
}
public DataUpdateLock GetUpdateLock(IDataIdentifier id)
{
lock (locked)
{
if (locked.Contains(id))
{
return(null);
}
DataUpdateLock updateLock = new DataUpdateLock(Guid.NewGuid(), id, DateTime.Now.AddMinutes(1));
updateLocks.Add(updateLock.Id, updateLock);
locked.Add(id);
updateLock.OnLockExpired += new LockExpiryEvent(OnLockExpired);
return(updateLock);
}
}
