Re: any support for deleting an entry from cdb file?

On 4/12/05, Pedro Melo Cunha <[email protected]> wrote:
> In an application I wrote, I needed to invalidade an entry of the CDB,
> to delete it. What I did, was this: each data element has an extra byte
> prefix, state. Initially the state is a space. If I want to delete it,
> I put a 'X' there.

This should be safe because one byte writes are atomic.

> Update is possible, but even more hackish: if your update data is
> smaller than the original data, and the key is the same, you could just
> write to the CDB

You will need to add locking if you do this, since writing more than
one byte is not guaranteed to be atomic.

--=20
David Phillips <[email protected]>
http://david.acz.org/