How to use EntityManager in a thread inside a J2EE container

Hi,
I'm looking for a usage pattern to use an EntityManager inside a thread of J2EE container. I used injection to inject an EntityManager in a EJB3 service and I can use the em with no problem. But the problem occurs when the service spin a thread and operations of the EntityManager (which is obtained using JNDI lookup ) inside that thread always fails.
What is the correct usage pattern to obtain/use an EntityManager inside a thread of a J2EE container?
Thanks.

What you are trying to do should work as long as you are using the Measurement Studio C++ classes in MStudio version 6.0 or later.
What version of Measurement Studio are you using? Could you post a simple program that demonstrates the problem?
There is a fundamental limitation in Windows that prevents you from using a Window handle (HWND) in a different thread than the one that created it. However, the Measurement Studio C++ classes (e.g. CNiGraph) are designed to automatically handle accessing the underlying handle from multiple threads. This is done through standard COM marshaling mechanisms and was implemented in version 6.0 of Measurement Studio.
David Rohacek
National Instruments

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Hello,
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Hi,
I am learning to use Notification to communicate between thread. I still don't know how to use it. In my current project I have a case to use this so I think I should implement this technique. My example is I have a main sequence in that I make a new thread. What I want is the new thread will do a task A when receive a notfication or to exit the thread when the main sequence stop.
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Go to Solution.

Hello,
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.mrLeft{float:left} .mrInfo{border-left:solid 1px #989898;font-size:x-small;color:#989898}
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Is it possible to install j2se 1.4 on the same machine
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hey there,
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Attachments:
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[http://javamilestone.blogspot.com/|http://javamilestone.blogspot.com/]

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[http://code.google.com/apis/ajaxsearch/documentation/#fonje|http://code.google.com/apis/ajaxsearch/documentation/#fonje]
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[http://code.google.com/apis/ajaxsearch/documentation/#fonje_snippets|http://code.google.com/apis/ajaxsearch/documentation/#fonje_snippets]
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Spawning Threads inside the Web Container

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What are the ramifications of a developer spawning off threads from
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IT_TEXT                 =
IT_TEXT_LINES           =
IT_SRULE                =
IT_SRULE_UP             =
IT_TASKLISTS            =
EXTENSION_IN            =
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EXPORTING
WAIT =
IMPORTING
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How to use EntityManager in a thread inside a J2EE container

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