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Home » Eclipse Projects » Remote Application Platform (RAP) » Access Methods of Plugin(java.lang.LinkageError: loader constraint violation:)
Access Methods of Plugin [message #814877] Wed, 07 March 2012 01:05
Raj  is currently offline Raj Friend
Messages: 74
Registered: August 2011
I have plugin A which uses activation-1.0.2.jar for sending the email.

I am using RAP 1.5 and when i try to access the plugin A from another plugin B and pass the 'javax.activation.DataSource' I am getting the below error

java.lang.LinkageError: loader constraint violation: when resolving
method ";)V" the class loader (instance of org/eclipse/osgi/internal/baseadaptor/DefaultClassLoader) of the current class, ztest/View$1, and the class loader (instance of org/eclipse/osgi/internal/baseadaptor/DefaultClassLoader) for resolved class, test/email/EmailMessage, have different Class objects for the type javax/activation/DataSource used in the signature

When i run the server with -verbose command i notice
[Loaded javax.activation.DataSource from C:\jdk1.6.0_13\jre\lib\rt.jar]
[Loaded javax.activation.DataSource from file:/C:/dev/workspace01March/pluginA/lib/activation-1.0.2.jar]
[Loaded from file:/C:/dev/workspace01March/pluginA/]

My plugins are all in the active state.

Any pointers why i am getting the java.lang.LinkageError:
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