Mayssam, 1. copy-by-value is not only for <entity-deployment>. You can also set it in <session-deployment>. 2. It means that you are asking the container whether or not to clone parameters in EJB calls. The container clones all parameters by default because all calls are potentially remote calls and in remote calls, call by reference (the calling convention that java uses for parameter passing) has no meaning. But the fact is that call by reference has a great performance gain. So, Orion lets you to specify that the container should pass parameters by reference. 3. It's obvious that copy-by-value="false" have meaning only if the caller and callee are both running in the same JVM. 4. It will cause problems in your application if you have relied on the fact that parameters are passed by value. For example if the callee changes the value of parameters. In this scenario changes are reflected in actual parameters caller supplied. I think it's better to use immutable objects as parameters for remote calls to be sure that no changes will happen. I think remote objects has no problems if passed as parameters in this scenario. (If incorrect someone correct me, please)
Regards, Roozbeh/ P.S. (for Mayssam) Aaghaa joon khob mioomadi az oossaat miporsidi, chera mailing list? ;) -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Mayssam Sayyadian Sent: Saturday, September 29, 2001 2:46 PM To: Orion-Interest Subject: <entity-deployment> in orion-ejb-jar.xml dear all, i was studying orion-ejb-jar.xml and i found copy-by-value as an attribute of <entity-deployment>. according to orion-ejb-jar.xml.html (/docs/) setting this to false improves the performance of the entity beans. WHEN can i do this? if my beans have no setter methods in their remote interface mean that i can ask the container not to copy-by-value my beans? many thanx. --MS. _________________________________________________________ Do You Yahoo!? Get your free @yahoo.com address at http://mail.yahoo.com
