Re: [JBoss-user] Re: JB 3.0.4, loading classes from JAR in EAR

[Fredrik Lindgren]

We are using class-path manifest lists in JBoss 3.0.4 and it works with no problems at all. You have to make sure that the paths in the list are correct relative paths to the jar files you need. This is working from both wars and ejb jars (we have some common utility classes in a jar that is used from both web apps and ejb modules)

What is the latest version that you tested where it did not work?

/Fredrik Lindgren

Rod Macpherson wrote:

The class-path manifest list (originated as an applet enhancement) does not
work and they are not alone: weblogic also fails to load those classes. The
problem with the original post is that they state they have a jar in an ear.
That's clearly insufficient. The jar must be declared in the application.xml
based and it will have to be one of ejb, web or java components and each of
those has its own descriptor as we all know. I agree that for production you
cannot drop everything in  default/lib and for development you lose
hot-deploy by doing that. At the same time that is the perfect place for
shared libraries so in that sense it might be a solution to the original
problem. To isolate the jar to just one ear use a SAR file. The class-path
manifest list simply does not work unless you have tried that in the new
version and found otherwise. An alternative is to package classes with the
respective components so that each gets its own copy: not very elegant but
effective.

----- Original Message -----
From: "Andreas Mecky" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, January 23, 2003 5:22 AM
Subject: Re: [JBoss-user] Re: JB 3.0.4, loading classes from JAR in EAR

Hi,

you have to put this in the MANIFEST.MF.
If you use ANT to build your ear then you have to tell the jar-task to
include
your MANIFEST.MF. Otherwise ANT will create a default one for you.
The MANIFEST.MF got to look like this:
Manifest-Version: 1.0
Created-By: myself
Class-Path: myadditional1.jar myadditional2.jar
This assumes that these 2 jar files are in the main directory.

If you use any other tool then make sure that the MANIFEST.MF is in the
META-INF subdirectory.

HTH

Andreas


----- Original Message -----
From: "Eric Jain" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Cc: "otisg" <[EMAIL PROTECTED]>
Sent: Thursday, January 23, 2003 12:48 PM
Subject: [JBoss-user] Re: JB 3.0.4, loading classes from JAR in EAR

My EAR contains a WAR and a JAR.

I'm stuck with the same problem. The procedure outlined in the faq works
fine for accessing classes from my ejb's, but it does not work for

war's.

While putting all libraries in default/lib does solve the problem, this

is

not a real solution as I need to be able to package all resources into a
single deployable unit. I believe this would be a common requirement,

but

I

may be wrong.

So, is this a bug or a feature? If it is a feature, what is the rational
behind it? Or is there in fact a solution to the problem I have

overlooked?

the latter actually gave
additional errors at boot time

You didn't have any ejb's in the jar you put in the lib directory, did

you?

--
Eric Jain



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