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From "Jeremy Boynes (JIRA)" <>
Subject [jira] Created: (GERONIMO-1001) Derby NetworkServer does not use TCCL
Date Sat, 10 Sep 2005 15:42:30 GMT
Derby NetworkServer does not use TCCL

         Key: GERONIMO-1001
     Project: Geronimo
        Type: Bug
  Components: databases  
    Versions: 1.0-M5    
 Environment: Derby 10.1
    Reporter: Jeremy Boynes

When calling stored procedures, the Derby engine locates the implementation using three sources:
* the Thread's context classloader (TCCL)
* the database class path (jars that have been loaded in)
* the classpath of the engine classes themselves

When embedded in Geronimo as a RAR, we initialize the TCCL to that of the RAR which allows
procedure code to be located in the RAR itself.

However, if the RAR defines a NetworkServer the TCCL is not inherited by the worker threads
it spawns to service requests from clients and as a result calls to procedures whose implementation
is located in the war will fail with a ClassNotFoundException

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