[JBoss-user] [Persistence CMP/JBoss] - Re: Throughput of data low while using CMP/CMR entitybeans
I had some trouble a while ago when upgrading the jboss server. This is my Order(afsta)/LineItem(afpos) example which works very well now: /** * @ejb.interface-method * @ejb.relation * name=Afsta-Afpos * role-name=1-afsta-n-afpos * multiple=yes * target-multiple=no * target-ejb=Afpos * target-role-name=n-afpos-1-afsta * @jboss.target-relation * related-pk-field=afstaSerial * fk-column=afsta_serial * @jboss.relation-read-ahead strategy=on-find */ public abstract java.util.Collection getAfpos(); /** * @ejb.interface-method */ public abstract void setAfpos(java.util.Collection afpos); I use XDoclet-1.2.1 for generating the DDs. View the original post : http://www.jboss.org/index.html?module=bbop=viewtopicp=3843431#3843431 Reply to the post : http://www.jboss.org/index.html?module=bbop=postingmode=replyp=3843431 --- This SF.Net email is sponsored by BEA Weblogic Workshop FREE Java Enterprise J2EE developer tools! Get your free copy of BEA WebLogic Workshop 8.1 today. http://ads.osdn.com/?ad_id=4721alloc_id=10040op=click ___ JBoss-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-user
[JBoss-user] [Persistence CMP/JBoss] - Re: Throughput of data low while using CMP/CMR entitybeans
I guess, there is no XDoclet tags for lazy-resultset-loading yet as it's a new feature. But I don't know for sure. You can returned different entity types from ejbSelect methods but not finders. View the original post : http://www.jboss.org/index.html?module=bbop=viewtopicp=3843145#3843145 Reply to the post : http://www.jboss.org/index.html?module=bbop=postingmode=replyp=3843145 --- This SF.Net email is sponsored by BEA Weblogic Workshop FREE Java Enterprise J2EE developer tools! Get your free copy of BEA WebLogic Workshop 8.1 today. http://ads.osdn.com/?ad_id=4721alloc_id=10040op=click ___ JBoss-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-user
[JBoss-user] [Persistence CMP/JBoss] - Re: Throughput of data low while using CMP/CMR entitybeans
ejbLoad will still be called on each instance because it's the spec. And this is not what causes performance problems. You could also use read-ahead for CMR. But lazy-resultset-loading is not implemented for CMR. In case of a finder, you just query the database and return results. In case of CMR, besides querying the database container will establish relationships. It's more expensive. View the original post : http://www.jboss.org/index.html?module=bbop=viewtopicp=3843053#3843053 Reply to the post : http://www.jboss.org/index.html?module=bbop=postingmode=replyp=3843053 --- This SF.Net email is sponsored by BEA Weblogic Workshop FREE Java Enterprise J2EE developer tools! Get your free copy of BEA WebLogic Workshop 8.1 today. http://ads.osdn.com/?ad_id=4721alloc_id=10040op=click ___ JBoss-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-user
[JBoss-user] [Persistence CMP/JBoss] - Re: Throughput of data low while using CMP/CMR entitybeans
Alexey, Thanks again for taking time out. It makes more sense to me now. I used the finder and the performance improved relatively. 730 records in 12 seconds. I have not used Lazy-resultset-loading yet. However sorry to pester you with couple of yet again follow up questions: 1. Do u know the xDoclet tag for generating lazy-resultset-loading in jboss deployment descriptors??? I could not find one in the docs (xdoc nor jboss). 2. This is an unexpected one. Initially I have put the finder method in the OrderBean instead of in LineItemBean . Interesting enough I was getting a class cast exception when i was type casting the object retrieved from the collection returned by the finder to a LineItemLocal object (see ejb-ql query) and I was getting a class cast exception. When I moved the finder to LineItemBean then it worked. Doesn't the spec say that the collection returned by a finder is determined by the SELECT OBJECT(Type) part of ejb-ql query??? | /** | @ejb.finder method-intf = LocalHome | * description = Find all line Items of a order | * query = SELECT OBJECT(lineitem) FROM LineItemSchema AS lineitem WHERE fooditem.order.id=?1 | * signature = java.util.Collection findFoodItemsOfGroup(java.lang.String orderID) I apologize for pestering you. I would really appreciate if you can further clarify. sincere thanks again, -V View the original post : http://www.jboss.org/index.html?module=bbop=viewtopicp=3843079#3843079 Reply to the post : http://www.jboss.org/index.html?module=bbop=postingmode=replyp=3843079 --- This SF.Net email is sponsored by BEA Weblogic Workshop FREE Java Enterprise J2EE developer tools! Get your free copy of BEA WebLogic Workshop 8.1 today. http://ads.osdn.com/?ad_id=4721alloc_id=10040op=click ___ JBoss-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-user
[JBoss-user] [Persistence CMP/JBoss] - Re: Throughput of data low while using CMP/CMR entitybeans
In your case it would more efficient to use finder instead of CMR. Check out on-line docs Optimized Loading chapter. And lazy-resultset-loading on the wiki. View the original post : http://www.jboss.org/index.html?module=bbop=viewtopicp=3842910#3842910 Reply to the post : http://www.jboss.org/index.html?module=bbop=postingmode=replyp=3842910 --- This SF.Net email is sponsored by BEA Weblogic Workshop FREE Java Enterprise J2EE developer tools! Get your free copy of BEA WebLogic Workshop 8.1 today. http://ads.osdn.com/?ad_id=4721alloc_id=10040op=click ___ JBoss-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-user
[JBoss-user] [Persistence CMP/JBoss] - Re: Throughput of data low while using CMP/CMR entitybeans
Reposting XML in the code block |category name=org.jboss.ejb.plugins.cmp | priority value=DEBUG/ |/category | View the original post : http://www.jboss.org/index.html?module=bbop=viewtopicp=3842911#3842911 Reply to the post : http://www.jboss.org/index.html?module=bbop=postingmode=replyp=3842911 --- This SF.Net email is sponsored by BEA Weblogic Workshop FREE Java Enterprise J2EE developer tools! Get your free copy of BEA WebLogic Workshop 8.1 today. http://ads.osdn.com/?ad_id=4721alloc_id=10040op=click ___ JBoss-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-user
[JBoss-user] [Persistence CMP/JBoss] - Re: Throughput of data low while using CMP/CMR entitybeans
Alexey, Thanks For your responses. I deeply appreciate it. I need one small clarification or confirmation . The CMP query for generating related beans seems to be on each individual entity (i see ejbLoad being called for each entity). In a finder you specify the query to get all the entities and assoicate them with entity bean instances. hence using a finder will be more efficient Is my understanding right??? Thanks in advance, View the original post : http://www.jboss.org/index.html?module=bbop=viewtopicp=3842952#3842952 Reply to the post : http://www.jboss.org/index.html?module=bbop=postingmode=replyp=3842952 --- This SF.Net email is sponsored by BEA Weblogic Workshop FREE Java Enterprise J2EE developer tools! Get your free copy of BEA WebLogic Workshop 8.1 today. http://ads.osdn.com/?ad_id=4721alloc_id=10040op=click ___ JBoss-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-user
[JBoss-user] [Persistence CMP/JBoss] - Re: Throughput of data low while using CMP/CMR entitybeans
Is your report generated inside a transaction? It should be, otherwise there is no caching (actually worse, there probably is caching, but it is discarded all the time). Joachim P.S. Damned, I seem to be sounding like a broken record, telling the same story over and over... View the original post : http://www.jboss.org/index.html?module=bbop=viewtopicp=3842808#3842808 Reply to the post : http://www.jboss.org/index.html?module=bbop=postingmode=replyp=3842808 --- This SF.Net email is sponsored by BEA Weblogic Workshop FREE Java Enterprise J2EE developer tools! Get your free copy of BEA WebLogic Workshop 8.1 today. http://ads.osdn.com/?ad_id=4721alloc_id=10040op=click ___ JBoss-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-user
[JBoss-user] [Persistence CMP/JBoss] - Re: Throughput of data low while using CMP/CMR entitybeans
Joachim, Yes. All of this happens in a Session Facade api with a tx attribute of required. Even the finder method to find the orders has a tx attribute of required. Is this the typical throughput that we can expect ??? I am still puzzled that only 1000 records can be retrieved per minute if you are assoicating the data with CMP beansthe trace shows that ejbLoad is call for each bean..(record)... View the original post : http://www.jboss.org/index.html?module=bbop=viewtopicp=3842812#3842812 Reply to the post : http://www.jboss.org/index.html?module=bbop=postingmode=replyp=3842812 --- This SF.Net email is sponsored by BEA Weblogic Workshop FREE Java Enterprise J2EE developer tools! Get your free copy of BEA WebLogic Workshop 8.1 today. http://ads.osdn.com/?ad_id=4721alloc_id=10040op=click ___ JBoss-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-user
[JBoss-user] [Persistence CMP/JBoss] - Re: Throughput of data low while using CMP/CMR entitybeans
Ok. Turn on CMP logging to see which SQL statements are being executed. Have a look at the docs about load-group, preloading etc. The configuration changes should be noticeable in the SQL statements executed. Joachim View the original post : http://www.jboss.org/index.html?module=bbop=viewtopicp=3842834#3842834 Reply to the post : http://www.jboss.org/index.html?module=bbop=postingmode=replyp=3842834 --- This SF.Net email is sponsored by BEA Weblogic Workshop FREE Java Enterprise J2EE developer tools! Get your free copy of BEA WebLogic Workshop 8.1 today. http://ads.osdn.com/?ad_id=4721alloc_id=10040op=click ___ JBoss-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-user
[JBoss-user] [Persistence CMP/JBoss] - Re: Throughput of data low while using CMP/CMR entitybeans
Thanks joachim, how do i turn cmp logging??? I turned on DEBUG messages in log4j.xml...i see the queries but also a deluge of message from all the other components IS there a way to turn CMP Logging alone View the original post : http://www.jboss.org/index.html?module=bbop=viewtopicp=3842839#3842839 Reply to the post : http://www.jboss.org/index.html?module=bbop=postingmode=replyp=3842839 --- This SF.Net email is sponsored by BEA Weblogic Workshop FREE Java Enterprise J2EE developer tools! Get your free copy of BEA WebLogic Workshop 8.1 today. http://ads.osdn.com/?ad_id=4721alloc_id=10040op=click ___ JBoss-user mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/jboss-user
