Is there some reason that ChunkCreatorClass needs to be set dynamically?
It isn't hacky to change the descriptor as part of a static
configuration.

-----Original Message-----
From: Chavan, Girish [mailto:[email protected]] 
Sent: Monday, July 27, 2009 12:33 PM
To: [email protected]
Subject: RE: Problem reconfiguring after setting a config parameter
value

Hi All,

I am still stuck here. My backup option is to alter the descriptor xml
before building an analysis engine with it, but it is kinda hacky, so
was hoping for a cleaner solution. Can any of the developers chime in?

Thanks,
_______________
Girish Chavan, MSIS
Department of Biomedical Informatics (DBMI)
University of Pittsburgh



-----Original Message-----
From: Chavan, Girish [mailto:[email protected]] 
Sent: Friday, July 24, 2009 11:01 AM
To: [email protected]
Subject: Problem reconfiguring after setting a config parameter value

Hi All,

I am using the following code to set the value for the
'ChunkCreaterClass' parameter. I had  to add line (2) because without it
I was getting a UIMA_IllegalStateException due to the session being
null. I am not quite sure if that is the way you set a new session. In
any case I stopped getting that error. But now I get a
nullpointerexception error ( trace shown below the code).
I had a breakpoint set in the
ConfigurationManagerImplBase.validateConfigurationParameterSettings
method to see what was happening. It entered the method multiple times
to validate each AEs params.  The first set of calls was triggered after
line (1). And it went through smoothly. The next set was triggered after
line (4) which threw an exception immediately for the "/" context.
Within the implementation of the validateConfigurationParameterSettings
method. I see that ConfigurationParameterDeclarations comes up null for
the "/" context.

Not quite sure what I am doing wrong. Any ideas??

CODE:
(1)AnalysisEngine ae =  UIMAFramework.produceAnalysisEngine(specifier);
(2)ae.getUimaContextAdmin().setSession(new Session_impl());
(3)ae.setConfigParameterValue("ChunkCreaterClass", "Something");
(4)ae.reconfigure();

Exception:
java.lang.NullPointerException
                at
org.apache.uima.resource.impl.ConfigurationManagerImplBase.validateConfi
gurationParameterSettings(ConfigurationManagerImplBase.java:488)
                at
org.apache.uima.resource.impl.ConfigurationManagerImplBase.reconfigure(C
onfigurationManagerImplBase.java:235)
                at
org.apache.uima.resource.ConfigurableResource_ImplBase.reconfigure(Confi
gurableResource_ImplBase.java:70)



Thanks.
_______________
Girish Chavan, MSIS
Department of Biomedical Informatics (DBMI)
University of Pittsburgh
UPMC Cancer Pavilion, 302D
5150 Centre Avenue
Pittsburgh, PA  15232
Office: 412-623-4084
Email: [email protected]

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