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Re: Third Party Jar Project
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Re: Third Party Jar Project


  • Subject: Re: Third Party Jar Project
  • From: John Pollard <email@hidden>
  • Date: Fri, 1 Aug 2008 10:33:03 +0100

Hi Lachlan,

On 31 Jul 2008, at 22:49, Lachlan Deck wrote:

I then released the application and framework to a test server and annoyingly it can't see packages that are in the jar. The framework release looks fine with the jar inside it. The application MacOSClassPath.txt appears to reference the jar within the framework ok (the same way it successfully references jars in other frameworks).

I note you said to set an option to embed frameworks. In general we release frameworks separately from applications so there is just one version of any framework released and this is shared. Any thoughts on tracking the problem down would be welcome.

Okay, so does your framework look like this? *.framework/Contents/Resources/Java/yourframework.jar *.framework/Contents/Resources/Java/liba.jar *.framework/Contents/Resources/Java/libz.jar

Actually as above but without the Contents directory, so for example:
*.framework/Resources/Java/xxxx.jar
My other frameworks look the same (ones that are linked in without a problem)
Yes I have a framework jar (empty) and the other jars I added.


And your app references all these jars in its classpath?

My app is configured in JavaMonitor to run as: /Library/WebObjects/Applications/MPMall.woa/MPMall

When I run that from the command line, I see:

/Library/WebObjects/Applications/MPMall.woa/MPMall -WOSessionTimeOut 3600 -WODebuggingEnabled YES -Xms16m -Xmx1024m -DNSDebugGroups -1 - DNSDebugLevel 2 -Djava.awt.headless=true -Duser.timezone=GMT - WOAllowsConcurrentRequestHandling YES -WODirectConnectEnabled NO
Reading MacOSClassPath.txt ...
Launching MPMall.woa ...
java -XX:NewSize=2m -Xmx64m -Xms32m -DWORootDirectory="/System" - DWOLocalRootDirectory="" -DWOUserDirectory="/Users/admin/wologs" - DWOEnvClassPath="" -DWOApplicationClass=mpMall.Application - DWOPlatform=MacOS -Dcom.webobjects.pid=8377 -Xms16m -Xmx1024m - Djava.awt.headless=true -Duser.timezone=GMT -classpath WOBootstrap.jar com.webobjects._bootstrap.WOBootstrap -WOSessionTimeOut 3600 - WODebuggingEnabled YES -DNSDebugGroups -1 -DNSDebugLevel 2 - Djava.awt.headless=true -Duser.timezone=GMT - WOAllowsConcurrentRequestHandling YES -WODirectConnectEnabled NO
Loading /Library/WebObjects/Applications/MPMall.woa/Contents/MacOS/ MacOSClassPath.txt
Generated classpath:
/Library/WebObjects/Applications/MPMall.woa/Contents/Resources/Java/
/Library/WebObjects/Applications/MPMall.woa/Contents/Resources/Java/ jdom.jar
/Library/WebObjects/Applications/MPMall.woa/Contents/Resources/Java/ mpmall.jar
/System/Library/Frameworks/JavaWebObjects.framework/Resources/Java/ javawebobjects.jar
/System/Library/Frameworks/JavaFoundation.framework/Resources/Java/ javafoundation.jar
/System/Library/Frameworks/JavaXML.framework/Resources/Java/ javaxml.jar
/System/Library/Frameworks/JavaWOExtensions.framework/Resources/ Java/javawoextensions.jar
/System/Library/Frameworks/JavaEOAccess.framework/Resources/Java/ javaeoaccess.jar
/System/Library/Frameworks/JavaEOControl.framework/Resources/Java/ javaeocontrol.jar
/System/Library/Frameworks/JavaJDBCAdaptor.framework/Resources/Java/ javajdbcadaptor.jar
/Library/Frameworks/InraxEOModel.framework/Resources/Java/ inraxeomodel.jar
/Library/Frameworks/MPGoogleCheckout.framework/Resources/Java/ mpgooglecheckout.jar
/Library/Frameworks/MPServerEOs.framework/Resources/Java/ mpservereos.jar
/Library/Frameworks/MPServerSideJars.framework/Resources/Java/ jasperreports-3.0.0.jar
/Library/Frameworks/MPServerSideJars.framework/Resources/Java/ mpserversidejars.jar
/Library/WebObjects/Extensions/activation.jar
/Library/WebObjects/Extensions/avalon-framework-4.1.2.jar
/Library/WebObjects/Extensions/axis-ant.jar
[snip....]


My jar framework is mpserversidejars and the third party jar it contains is jasperreports-3.0.0.jar which is in the list above, but the program is unable to import packages from within that jar.

The first error I get is:
Throwable message: Errors were encountered when compiling report expressions class file:
/Library/WebObjects/Applications/MPMall.woa/ TransactionReportGO_1217582539887_16958.java:4: package net.sf.jasperreports.engine does not exist
import net.sf.jasperreports.engine.*;


But that package is in jasperreports-3.0.0.jar

Adding the jar to /Library/WebObjects/Extensions doesn't help.

Adding the jar to /Library/Java/Extensions fixes the problem.

These last two points seem to absolve the framework / application class path set up of any wrongdoing! The problem shifts to why /L/J/E works but any other place on the classpath does not. I have come across similar before but don't know enough about class linking to know why this might be.

Regards, John
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