[jboss-dev-forums] [Design of Messaging on JBoss (Messaging/JBoss)] - Re: Large Messages and the JMS Bridge

We had a relevant conversation about this today on the IRC, and I wanted to keep a record of it here: "Clebert, Andy and Jeff on IRC" wrote : | (10:15:18 AM) clebert: Cache on LargeMessage | (10:15:24 AM) clebert: the way I implemented is... | (10:15:34 AM) clebert: I added a new attribute on the SessionFactory and ConnectionFactory | (10:15:42 AM) clebert: cacheLargeMessageClient | (10:15:45 AM) clebert: with default = false | (10:16:07 AM) clebert: if that is set, the LargeMessageBuffer will use a temporary file (on the TempDir) to hold on the large message content | (10:16:19 AM) clebert: tempDir = File.createTempFile() | (10:16:29 AM) clebert: the file is marked to be deleted after exit | (10:16:36 AM) clebert: and finalize will also delete the temp file | (10:16:48 AM) clebert: that will be probably used only on the bridge... or if the user needs it | (10:16:58 AM) clebert: I only need to document it now | (10:17:07 AM) AndyTaylor: clebert: so the message will stay in temp for the user to obtain | (10:17:30 AM) clebert: AndyTaylor: LargeMessages are usually a stream of packets... | (10:17:35 AM) clebert: if that property is true... | (10:17:39 AM) clebert: there will be a file on the client... | (10:17:48 AM) clebert: so if the user moves the buffer back, it will recover the content from the file | (10:18:05 AM) clebert: otherwise it' s not possible to move a largemessage buffer back, since it would be a streaming otherwise | (10:18:12 AM) AndyTaylor: clebert: ok i see. | (10:18:22 AM) jmesnil: clebert: do you think it is worth to have a example with a cached large message? | (10:19:05 AM) clebert: jmesnil: I' m not sure... I would prefer users not using that feature... only letting it for cases where you need to cache the message (i.e., the Bridge) | (10:19:16 AM) AndyTaylor: clebert: +1, i agree | (10:19:17 AM) clebert: jmesnil: I' m not 100% sure | (10:19:25 AM) AndyTaylor: clebert: internal use only | (10:19:26 AM) jmesnil: clebert: ok, it's more an "internal" feature | (10:19:54 AM) clebert: jmesnil: allthough I would need to set the attribute for the Bridge | (10:19:59 AM) clebert: on the CF used by the Bridge | (10:20:10 AM) clebert: maybe I would only set it on the JMSBridge | (10:20:38 AM) jmesnil: clebert: on the core bridge too? | (10:21:05 AM) clebert: jmesnil: no... the core bridge deals with ServerMessage which has the File on it already | (10:21:17 AM) jmesnil: clebert: ah, ok | (10:21:26 AM) clebert: jmesnil: I will double check it though | View the original post : http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4246501#... Reply to the post : http://www.jboss.org/index.html?module=bb&op=posting&mode=reply&a...