On 17 Mar 2011, at 10:52, Mircea Markus wrote: > > On 17 Mar 2011, at 10:33, Jonathan Halliday wrote: > >> >> You'll need to store the content, not the Object. The interface has getters >> to extract the field values which are primitive types and thus easy to >> store. You'll need your own impl of the interface if you need to recreate >> internally. JBossTS does not care what it receives, as long as it implements >> the Xid interface. It won't necessarily give you back your own impl when >> calling your methods though. > good, that's what I expected. >> >> If you're writing your own impl the most important bit oddly enough is >> toString(). We have endless hassle from systems that print Xids binary value >> in different forms, making correlation of the TM and RM logs rather hairy. >> Try not to invent yet another format please :-) > What I can do is use the same .toString from JBossTM: can you please confirm > this is the one: com.arjuna.ats.jta.xa.toString() I ment com.arjuna.ats.jta.xa.XID.toString() > The problem is still there for other TMs though, so at one point we might > want to do this pluggable. > Pluggable .toString() - can't believe I've just said that!!! :-) >> >> Jonathan. >> >> On 03/17/2011 10:26 AM, Mircea Markus wrote: >>> Hi Jonathan, >>> >>> We need to serialize the javax.transaction.xa.Xid received from TM in order >>> to back up information on other nodes. Xid is not serializable so we need >>> to use our internal Xid implementation in order to be able to de-serialize >>> it. >>> This also means that XAResource.recover returns Xid instances that are of >>> type org.infinispan.tx.Xid, with its own implementation of equals and >>> hashcode, but with exactly the same state as the org.custom.tm.Xid. >>> Would JBossTM expect XAResource.recover to return Xids of a different >>> java.lang.Class? What's your take in general on this problem? >>> >>> Cheers, >>> Mircea >> >> -- >> Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, >> Windsor, Berkshire, SI4 1TE, United Kingdom. >> Registered in UK and Wales under Company Registration No. 3798903 Directors: >> Michael Cunningham (USA), Charlie Peters (USA), Matt Parsons (USA) and >> Brendan Lane (Ireland). >
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