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https://issues.apache.org/jira/browse/UIMA-5554?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16160344#comment-16160344
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Richard Eckart de Castilho commented on UIMA-5554:
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I don't understand what "installed/committed" means. As far as I know, there
was a concept of committing the type system of a CAS instance in v2. But afaik
this was per-CAS/classloader and not globally. Also, it was possible to
re-initialize a CAS with a new type system even after one had already been
committed. That concept seems still to be there in UIMAv3 and is being used in
CasIOUtils when CasLoadMode.REINIT is used. Afaik, in v2 it was possible to
have any number of type systems and different CASes initialized with different
type systems - and if different classloaders were used, even with different
JCas classes.
Is there a new concept of "installing/committing" types in v3?
Why are the types not simply "installed" when the JCas class is loaded and
initialized?
> 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
>
> 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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