He was suggesting making the "JSP's Java Bean" methods that use the
SessionBean reference synchronized...
An EJB is not allowed to use thread synchronization primitives.
Robert
At 10:35 AM 1/19/00 -0500, you wrote:
><Weblogic>
>Making the [session]bean methods synchronized won't solve any reentrancy
>problem
>since an exception would be thrown the moment you even remotely so try to
>"touch"
>the session bean from another thread.
>
>We tried synchronizing on the session bean itself but this led to a deadlock
>in many cases.
>Eventually, we ended up storing a lock object (just any plain object) in the
>session and
>having every servlet or JSP/JHTML synchronize on a particular lock for any
>given session
>if more than one EJB session are kept.
>
>This obviously requires extra care to be taken by the developers but it is
>only necessary to
>do so when a session is accessed by multiple requests(be it from a frame or
>a child window)
>on behalf of a single and unique client.
></WEBLOGIC>
>
>This method could probably applied to a session bean being shared among
>multiple clients(HttpSession)
>by storing lock objects in the ServletContext or any other application
>context. Haven't tried this though.
>
>
>Frederic Kam-Thong
>Invera Inc.
>Westmount, Quebec
>
>
>-----Original Message-----
>From: dan benanav [mailto:[EMAIL PROTECTED]]
>Sent: Tuesday, January 18, 2000 22:18
>To: [EMAIL PROTECTED]
>Subject: Re: Vendor Challenge
>
>
>You would have to make sure the beans methods are synchonized for this to
>work.
>
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