[jdev] Where is the JCR these days?

Mark Doliner mark at meebo.com
Thu Dec 6 12:06:47 CST 2007

On Dec 6, at 9:53 AM, Donald Hoffman wroge:
> On Dec 6, 2007, at 1:01 AM, Tomasz Sterna wrote:
> > On Śr, 2007-12-05 at 19:31 -0800, Donald Hoffman wrote:
> >> I wanted to experiment with writing an XMPP external component for a
> >> project I am working on.     I noticed some references to the Jabber
> >> Component Runtime and was thinking of starting with that.
> >
> > JCR is not a tool to write own components.
> > It's a tool to run jabberd14 components standalone.
> > (It's basically stripped-down jabberd14 server.)
> >
> > I cannot recommend a component writing framework though...
> I had thought that JCR was used to turn a jabberd14 "internal"
> component in to an "external" one.  (E.g, per XEP-114).  In that sense
> it is not a stripped down server, since it still needs a jabber server
> somewhere to run (not necessarily on the same machine).   Was I wrong
> about that?

Er, you're both correct.  The JCR is a small library which was written to allow jabberd14 components to run as a XEP-0114 component.  It contains lots of utility functions taken from old versions of the jabberd14 server (jid_user, jid_full, a hash table, memory pooling, string spools, etc), as well as the low level connection code used to connect to a XEP-0114 compatible Jabber server.

I don't know if the JCR is maintained as a standalone library anymore, but it is used by MU-Conference, and the JCR code is still fairly independent of the rest of the MU-Conference code.  MU-Conference can be downloaded from http://gna.org/projects/mu-conference/ (I'd check it out from SVN, to make sure you have the latest code).

And you'll probably want to compare it to the other projects mentioned (iksemel and gloox) to determine which works best for you.


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