System classpath deployment ideas?

Our product consists of an API and 4 management web applications. We want to restrict
the API provider classes to one instance per vm. Thanks to the classloading improvements
in wls 8.1, we can package the provider code in APP-INF/lib and share one instance
between all 4 of our web applications.
However, ideally we want the provider code shared as a singleton, available to
all EAR files on the server (which may contain code written to the API). The
only way we can figure out how to accomplish this is to put the provider by hand
in the system classpath for each deployment.
Our customers want a clean deployment solution across multiple managed servers.
Does BEA offer a loader between the system loader and all the ear loaders? Would
any developers have ideas on how we could automate deployment into the system
classpath?

Status of deployment is slightly different from "every class within your EAR
is reachable". Deployment status is "did this deployment action finish", at
which point classloaders are inited and some class resolution has taken
place i.e. can the j2ee container load the EJB that is specified in the
descriptor, but not all classes have been loaded. With java's lazy class
load initialiation classes are loaded at request time.
So now to your real problem. Why do you put these interfaces in the system
classpath? (My guess is you want to share them across multiple archives?).
Currently J2EE doesn't have a way to share a single library between multiple
archives. We are looking at solutions to this for our next release. But
until then, you will have to put these interfaces inot a myEBJInterfaces.jar
and put it in each EAR at EAR/APP-INF/lib.
Cheers
mbg
"Brian" <[email protected]> wrote in message
news:3eca93e0$[email protected]..
>
I'm using wls 8.1. I have an EAR in which several EJB interfaces areloaded from
the system classpath. After redeployment, these EJB's are not available.
java.rmi.NoSuchObjectException: Bean is already undeployed
I would have expected not to be able to affect any change in such EJBs viaredeployment,
but that redeployment would be successful. The console shows thatredeployment
for these EJBs is successful (i.e., status: active). So, do these classeshave
to be off the classpath for redeployment to work properly? Why doesn'tthe console
report their status correctly? Thanks...
..Brian

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[email protected]

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Set system classpath using java program??

Hi,
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Prashant

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daleroach
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If you are within 30 days of purchase and have purchase the download from Adobe, then contact Adobe via its Adobe Chat to get a refund. To do that, click on the following link
http://helpx.adobe.com/sea/contact.html?step=PRE_membership-account-payment_payments-invoi ces-orders_stillNeedHelp
Premiere Elements
Membership, Account, Payment
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Chat Panel
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