After like ten years of this, I gotta tell you I'm never amazed at how big a PITA class loaders can be in general, and how incredibly ugly they are in server environments.
I am with Carson. I would split the Flex portion of this into a different web app. BEA should suppport SSO across web-apps implicitly. The other option in my mind is to remove fop.jar from web-inf/flex/lib The rationale is that fop.jar would have been loaded by the web-apps loader. Since the server-side of Flex is honestly nothing but a couple of servlets and filters, the web-inf/lib loaded version of the jar would be cached in the loader already and loaded from there. >From your friendly neighborhood J2EE apologist..... -- Dave Wolf Cynergy Systems, Inc. Macromedia Flex Alliance Partner http://www.cynergysystems.com Email: [EMAIL PROTECTED] Office: 866-CYNERGY --- In [email protected], "Carson Hager" <[EMAIL PROTECTED]> wrote: > > Frankly, I was a little confused about that. I didn't think that WLS had > that but some app servers do. If you don't have one, just ignore that > part of it. I now understand what you are getting at. You have fop.jar, > etc. in web-inf/lib and these also exist in the flex subfolders under > web-inf. This is going to be tricky. The one in web-inf/lib is gonna > have to go if you need to have al of this in the same web application. I > would look at breaking this up into two different web applications and > implementing SSO across the two. > > > > > > Carson > > > > ____________________________________________ > > Carson Hager > Cynergy Systems, Inc. > http://www.cynergysystems.com > > Email: [EMAIL PROTECTED] > Office: 866-CYNERGY > Mobile: 1.703.489.6466 > > > ________________________________ > > From: [email protected] [mailto:[EMAIL PROTECTED] On > Behalf Of Jaime Bermudez > Sent: Saturday, December 10, 2005 6:14 PM > To: [email protected] > Subject: Re: [flexcoders] URGENT Problem on Flex installed on BEA > WebLogic > > > > I didn't know the server had a web-inf... the only web-inf I see is in > my deployed war directory. Just to clarify, I deploy an EAR that has > separate ejb and war deployments. The only web-inf directory I see is > under user_projects -> domain -> mydomain -> applications -> {myapp} -> > {war}. Where should there be another web-inf? > > On 12/10/05, Carson Hager <[EMAIL PROTECTED]> wrote: > > I would definitely load those at the web app level. I tend to load most > everything at the web app level to avoid integration issues just like > the one you're dealing with right now. When you say fop.jar is in > web-inf, is it in the server web-inf ( shared for all web apps ) or the > web app's web-inf? > > > > > Carson > > ____________________________________________ > > Carson Hager > Cynergy Systems, Inc. > http://www.cynergysystems.com <http://www.cynergysystems.com/> > > Email: [EMAIL PROTECTED] > Office: 866-CYNERGY > Mobile : 1.703.489.6466 > > > ________________________________ > > From: [email protected] [mailto:[EMAIL PROTECTED] On > Behalf Of Jaime Bermudez > Sent: Saturday, December 10, 2005 1:03 PM > To: [email protected] > Subject: Re: [flexcoders] URGENT Problem on Flex installed on BEA > WebLogic > > > > I couldn't find a way to turn on classloader tracing (at least I didn't > see anything in the weblogic 8.1 docs), however I think the problem may > be in the setup. My fop.jar, batik.jar and other supporting files (i.e. > avalon-framework-cvs*.jar) are in the WEB-INF/lib directory of the app > server. The flex jars, including all of the batik-*** files, are > located under WEB-INF/flex/jars. From what I understand about the > prefer-web-inf-classes parameter, it loads jars under the WEB-INF > directory before loading jars that are part of the weblogic server > classpath - in my case the fop jars are NOT in weblogic's startup > classpath. So, I'm guessing the fact that both sets of batik jars are > under the WEB-INF directory, albeit in different subdirectories, is why > the app still has a problem loading. > > > > Does that sound right? Where do you keep your fop related jars and do > you load them at the server level as opposed to the application level? > > > > On 12/9/05, Carson Hager < [EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]> > wrote: > > Interesting. The next thing I would do is verify where the css parser > errors are getting loaded from. WLS should have a way to turn on > classloader tracing so that it will log out the physical location from > where it loaded the classes. See if you can enable that and let me know > what it says. > > > > > Carson > > > > ____________________________________________ > > Carson Hager > Cynergy Systems, Inc. > http://www.cynergysystems.com <http://www.cynergysystems.com/> > > Email: [EMAIL PROTECTED] > Office: 866-CYNERGY > Mobile : 1.703.489.6466 > > > ________________________________ > > From: [email protected] [mailto:[EMAIL PROTECTED] On > Behalf Of Jaime Bermudez > Sent: Thursday, December 08, 2005 11:58 AM > To: [email protected] > Subject: Re: [flexcoders] URGENT Problem on Flex installed on BEA > WebLogic > > > > Hey Carson, > > > > I'm trying out your technique, but I'm still getting LocatorParser > errors... here's a snippet of my weblogic.xml: > > > > <weblogic-web-app> > <security-role-assignment> > ... > > </security-role-assignment> > > <jsp-descriptor> > ... > </jsp-descriptor> > > <container-descriptor> > <prefer-web-inf-classes>true</prefer-web-inf-classes> > </container-descriptor> > </weblogic-web-app> > > > > This solution worked for you guys? > > > > On 9/16/05, Carson Hager < [EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]> > wrote: > > My pleasure. The only impact will be a small increase in memory > utilization by the server at startup. Basically, appservers like WLS > like to use hierarchical classloaders so that classes which are shared > by multiple web applications are not loaded for each web app. By using > a shared classloader, there is savings in memory and ( to a small degree > ) runtime performance due to the need to only load/verify the class a > single time. The reality is that these things are basically negligible. > The kicker with hierarchical classloaders is exactly what you're seeing > here...the need to override at a child level. I'm sure you'll find this > to be a good solution. > > > > > > Carson > > > > ____________________________________________ > > Carson Hager > Cynergy Systems, Inc. > http://www.cynergysystems.com <http://www.cynergysystems.com/> > > Email: [EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]> > Office: 866-CYNERGY ext. 89 > Mobile: 1.703.489.6466 > > Take PowerBuilder to the Web with EAF 4.0 > http://www.cynergysystems.com/public/products/eaf > > > > > > > > ________________________________ > > From: [email protected] [mailto: [email protected] > <mailto:[email protected]> ] On Behalf Of Kevin Towes (New > Toronto Group) > Sent: Friday, September 16, 2005 1:22 PM > To: [email protected]; [email protected] > > > Subject: RE: [flexcoders] URGENT Problem on Flex installed on BEA > WebLogic > > > > > Thanks, Carson - > > We're looking into the impact of this. It might be the best solution. > I'll let you (and the list) know. > > kev. > > > Kevin Towes, Sr. Consultant > New Toronto Group, [EMAIL PROTECTED] > Office: 905-897-7790 x4018 Mobile: 416-882-4445 > [onRemote] > > ________________________________ > > From : "Carson Hager" <[EMAIL PROTECTED]> > Sent: Friday, September 16, 2005 12:42 PM > To: [email protected] > Subject: RE: [flexcoders] URGENT Problem on Flex installed on BEA > WebLogic > > Kevin, > > > > This is a classloader issue. Check out prefer-web-inf-classes in the > following URL to turn off the default behavior of the WLS classloader to > allow for classes in web apps to be loaded in preference of the server > level classloader. > > > > http://e-docs.bea.com/wls/docs81/programming/classloading.html > > > > > > Carson > > ____________________________________________ > > Carson Hager > Cynergy Systems, Inc. > http://www.cynergysystems.com <http://www.cynergysystems.com/> > > Email: [EMAIL PROTECTED] > <mailto:[EMAIL PROTECTED]> > Office: 866-CYNERGY ext. 89 > Mobile: 1.703.489.6466 > > Take PowerBuilder to the Web with EAF 4.0 > http://www.cynergysystems.com/public/products/eaf > > > > > > > > ________________________________ > > From: [email protected] [mailto: [email protected] > <mailto:[email protected]> ] On Behalf Of Kevin Towes (New > Toronto Group) > Sent: Friday, September 16, 2005 12:29 PM > To: [email protected] > Subject: [flexcoders] URGENT Problem on Flex installed on BEA WebLogic > > > > Hey Gang - > > We're having a bit of an urgent issue with a Flex installation on BEA > Weblogic Portal Server. I know there were some threads a while back on > this issue, so I'll explain it below. > > The issue relates to the fop.jar file that is used in the BEA Portal > Server (WebLogic). The BEA jar file overrides the FLEX package that > parses css . The manifest file included in the fop.jar defines " > batik.jar" in the class path. The Batik.jar file installed with BEA is > an older version then is required by FLEX to parse CSS. > (css.locater.parser) > > We've found information on FlexCoders to remove the fop.jar file from > BEA, which works, but is not a solution that our customer is comfortable > with. > > Does anyone know anything about this, or better, how to get around the > issue? > > I've tried going through "official" Macromedia Support on this, and > they're timing for support doesn't fit our customer, so here's a chance > for the FlexCoders list to shine. > > Who ever helps me solve it gets a couple drinks on me at MAX in a couple > weeks. > > Kevin Towes. > > > > > > Kevin Towes, Sr. Consultant > New Toronto Group, [EMAIL PROTECTED] > Office: 905-897-7790 x4018 Mobile: 416-882-4445 > [onRemote] > > > -- > Flexcoders Mailing List > FAQ: http://groups.yahoo.com/group/flexcoders/files/flexcodersFAQ.txt > Search Archives: > http://www.mail-archive.com/flexcoders%40yahoogroups.com > > > > ________________________________ > > YAHOO! 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