Hi Alexandru, Usually, an application server "discovers" Jackrabbit's support for transactions by having it deployed as a resource adapter, which is also where the XAResource interface comes into play. The contrib/jca subfolder contains code for turning Jackrabbit into a resource adapter.
Right now, Jackrabbit does not expose a "local" transaction interface that could be used when operating on a single repository, but, of course, you can always resort to the "global" transaction interface, namely the XAResource. Not all operations inside Jackrabbit are fully transactional, though, such as versioning and locking, but should follow soon. Inside the class org.apache.jackrabbit.core.XATest, some features of a transactional repository exposing a XAResource are tested. This class uses a simple UserTransaction implementation. Maybe, taking a look at this code sheds some light. Cheers Dominique On 11/30/05, Alexandru Popescu <[EMAIL PROTECTED]> wrote: > Hi! > > I have been trying to understand the way I can use transactions inside my > application. > Unfortunately, so far I haven't been able to understand what are the > requirements and what is > supposed to be done on my side to make it work. > > I will try to describe my usage scenario and what I would like to see > happening, and than hopefully > somebody with more experience can shed some light on my `dazed and confused´ > transactional mind :-). > > The environment I am working on is a multi-repository under Tomcat. The > general question would be: > > a/ do I need to use a 3rd party transaction provider (like JOTM)? > b/ if a 3rd party transaction provider is involved how can I make it aware of > the jackrabbit? (or it > should be the other way around?) > > 1/ scenario 1: single repository scenario > > Inside a code fragment, where I already have opened the Session (and > sometimes some of the nodes are > already retrieved), I want to perform a set of modifications on the > repository nodes in a > transactional mode. > > - is it possible to use a UserTransaction to demarcate the transaction? what > are the limitations? > > 2/ scenario 2: multiple repository scenario > > Same as above, but the modifications are performed in multiple repositories. > Is it needed to use in > this case a XAResource? > > > Sorry if some of the above sound stupid, but right I am really really > confused. Please help me pass > over this confusion moment. > > thanks a lot in advance, > > ./alex > -- > .w( the_mindstorm )p. > > > ps: I have read a few times the spec fragment regarding transactions. I have > also searched the > mailing list and even if I have been able to find some related threads, these > unfortunately helped > get more confused. thanks again > >
