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https://issues.apache.org/jira/browse/UIMA-5554?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16166756#comment-16166756
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Richard Eckart de Castilho commented on UIMA-5554:
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I still do not feel that it is a good idea to prevent people from using
Class.forName() or from accessing static fields of classes because of an
exception that happens in a static constructor.
A JCas class has knowledge about the type system. Could it not itself
register/commit the necessary type information into the global type system
state? It would just be another source of type information, just as if one
would load different type descriptors (compatible with each) and create
different CASes using these type descriptors, thus incrementally adding to the
global type registry.
> Strange exception when trying to get JCas FS class through reflection
> ---------------------------------------------------------------------
>
> Key: UIMA-5554
> URL: https://issues.apache.org/jira/browse/UIMA-5554
> Project: UIMA
> Issue Type: Bug
> Components: Core Java Framework
> Affects Versions: 3.0.0SDK-beta
> Reporter: Richard Eckart de Castilho
> Fix For: 3.0.0SDK-beta
>
>
> I am trying to get a class object for a JCas FS type using reflection:
> {noformat}
> Class.forName(typeName);
> {noformat}
> However, it produces this strange error.
> {noformat}
> java.lang.ExceptionInInitializerError
> at java.lang.Class.forName0(Native Method)
> at java.lang.Class.forName(Class.java:264)
> ...
> Caused by: org.apache.uima.cas.CASRuntimeException: A JCas class field "sofa"
> is being initialized by non-framework (user) code before Type System Commit
> for a type system with a corresponding type. Either change the user load code
> to not do initialize, or to defer it until after the type system commit.
> at
> org.apache.uima.cas.impl.TypeSystemImpl.getAdjustedFeatureOffset(TypeSystemImpl.java:2575)
> at
> org.apache.uima.jcas.cas.AnnotationBase.<clinit>(AnnotationBase.java:71)
> ... 27 more
> {noformat}
> Is it considered harmful to try getting a class object for a JCas FS class?
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