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[IDV #CRR-682536]: (No Subject)

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  • Subject: [IDV #CRR-682536]: (No Subject)
  • Date: Mon, 14 May 2007 17:27:12 -0600
Ken,

> Including the .class files for the interfaces never worked, it always
> generates the same error with the standalone IDV program.  When the .class
> files are included and we run IDV through Eclipse, we get the error message:
> jlle:java.lang.LinkageError: loader (instance of
> ucar/unidata/idv/PluginManager$MyClassLoader): attempted  duplicate class
> definition for name: "MUControls/MUWorldFollower"
> MUWorldFollower is currently only implemented in one class, MUProbePair.  We
> get the same message for MUProbeController, an interface implemented in
> MUDataProbe and MUVerticalProfile.
> 
> 

I think when you run the IDV in eclipse eclipse already has the class loaded.
The IDV plugin manager just blindly loads the class from the plugin. I'll look 
into
that.

As for your ClassNotFoundException try making your jar with the classes in the 
MUControls
subdirectory. When the class loader gets called looking for a class it looks
for the fully qualified package name. Your jar should look like this (ignoring 
the .java files):
harpo.unidata.ucar.edu: jar -tvf mu.jar 
     0 Mon May 14 16:47:32 MDT 2007 META-INF/
    71 Mon May 14 16:47:32 MDT 2007 META-INF/MANIFEST.MF
     0 Mon May 14 16:47:30 MDT 2007 MUControls/
  7404 Mon May 14 16:44:00 MDT 2007 MUControls/MUController.class
  3116 Mon May 14 16:44:00 MDT 2007 MUControls/MUDataProbe.class
  2110 Mon May 14 16:44:00 MDT 2007 MUControls/MUKeyboardInput.class
   634 Mon May 14 16:44:00 MDT 2007 MUControls/MUProbeController.class
  1784 Mon May 14 16:44:00 MDT 2007 MUControls/MUProbePair.class
  3102 Mon May 14 16:44:00 MDT 2007 MUControls/MUVerticalProfile.class
   425 Mon May 14 16:44:00 MDT 2007 MUControls/MUWorldFollower.class
 11045 Mon May 14 13:44:18 MDT 2007 MUControls/MUController.java
  4531 Mon May 14 11:32:38 MDT 2007 MUControls/MUDataProbe.java
  3045 Mon May 14 13:46:30 MDT 2007 MUControls/MUKeyboardInput.java
   706 Mon May 14 10:07:22 MDT 2007 MUControls/MUProbeController.java
  2142 Mon May 14 13:10:32 MDT 2007 MUControls/MUProbePair.java
  3201 Mon May 14 11:32:24 MDT 2007 MUControls/MUVerticalProfile.java
   495 Mon May 14 10:07:44 MDT 2007 MUControls/MUWorldFollower.java
   345 Mon May 14 13:29:26 MDT 2007 MUControls/MUControllercontrols.xml


Not like this:
harpo.unidata.ucar.edu: jar -tvf MU_PlugIn.jar 
  9025 Mon May 14 13:48:30 MDT 2007 MUController.class
   345 Mon May 14 13:48:30 MDT 2007 MUControllercontrols.xml
  3964 Mon May 14 13:48:30 MDT 2007 MUDataProbe.class
  2365 Mon May 14 13:48:30 MDT 2007 MUKeyboardInput.class
  2490 Mon May 14 13:48:30 MDT 2007 MUProbePair.class
  3967 Mon May 14 13:48:30 MDT 2007 MUVerticalProfile.class


-Jeff



Ticket Details
===================
Ticket ID: CRR-682536
Department: Support IDV
Priority: Normal
Status: Open