Re: WebObjects jar frameworks and classpaths
Re: WebObjects jar frameworks and classpaths
- Subject: Re: WebObjects jar frameworks and classpaths
- From: Chuck Hill <email@hidden>
- Date: Tue, 13 Jan 2009 19:16:32 -0800
On Jan 8, 2009, at 8:14 AM, John Pollard wrote:
List,
I have now updated my build.xml file from a new dummy application
created using the latest WOLips as advised in the WOLips blog for
the new hotness. I also did this for my WO framework that contains
the jars I need to link in to, using a new dummy framework.
Now I get sight of my problem a step earlier, when trying to install
(WOLips Ant Tools, Install), where I see:
/Users/john/EclipseWork/workspace/MPMall/Sources/mpMall/
SyndicationFeedBuilder.java:15: package
com.sun.syndication.feed.synd does not exist
[wocompile] import com.sun.syndication.feed.synd.*;
...[snip]
Though there are still no errors showing in my actual code, this
only shows up when I try to install. If this package can't be found,
why doesn't it show in my source file?
When I look at the Java Build Path of my application after upgrading
to "hotness", I see that things that were previously listed as
dependent Projects in the Projects tab
I confess that I have little idea what the contents of that tab do or
are for. Mostly, I have nothing there.
are now shown in the Libraries tab as things like "MPServerEOs
Framework". So what is now the suggested way of adding dependent
frameworks?
Go to the Libraries tab, click Add Library, select WebObjects
Frameworks, select your framework. You probably need to install it
before doing this, I forget.
I can still do so in the Projects tab, but can't see how to confirm
with what is now showing in the Libraries tab; I can't see how to
add my framework that contains the jars and have it appear like the
others now do as "MyJarFramework Framework". Perhaps if I can solve
this it will remove my compile problem as the framework in question
contains the jar that contains the missing
com.sun.syndication.feed.synd package in the error message.
I believe that it will fix your problems.
Chuck
On 8 Jan 2009, at 14:01, John Pollard wrote:
Lachlan,
Many thanks for your reply. I have updated to the latest Eclipse
3.4.1 and the latest WOLips nightly, but that does not resolve this
issue. I am also posting to the rome mailing list to try from that
angle, but a nightly build of the latest rome jar didn't help either.
I also tried adding the two jars to my application directly,
cutting out the framework, but got the same outcome.
The rome jar only depends on the jdom dar, so shouldn't be too
complicated. I will post back if I eventually find the reason for
this.
John
On 6 Jan 2009, at 23:31, Lachlan Deck wrote:
Hi John,
On 07/01/2009, at 12:18 AM, John Pollard wrote:
A bit off topic, but I am struggling to make sense of this.
Simply put I want to understand why I can't put a couple of jars
into a WO framework and have the code still work as it does when
the same jars are in /Library/Java/Extensions.
Not really off topic. This is a classpath issue.
Created a new WebObjects framework.
Manually moved two jar files (rome-1.0RC1.jar and jdom.jar) out
of /Library/Java/Extensions into the new framework project's /
Libraries sub folder
Good.
In Java Build Path properties, Libraries tab, Add Jars.. to add
them in, then in the Order and Export tab tick them
Good.
In the app project, add the new framework as a dependency
Eclipse shows no compile time problems, so why the runtime error:
[java.lang.NoClassDefFoundError] com/sun/syndication/io/
ModuleGenerator
I will be very grateful for any pointers to help me solve this
one; in particular why/when Eclipse is happy at compile time, but
actually the classes are not found when run.
Are you running WOLips nightly and Eclipse 3.4.x? If not you might
need to update WOLips/Eclipse to get the fix that I think went in
late November.
The class that is not found is definitely in the rome jar.
Search the archives for Transitive. It's a transitive dependency
problem.
with regards,
--
Lachlan Deck
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--
Chuck Hill Senior Consultant / VP Development
Practical WebObjects - for developers who want to increase their
overall knowledge of WebObjects or who are trying to solve specific
problems.
http://www.global-village.net/products/practical_webobjects
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