[ https://issues.apache.org/jira/brow...action_12519809 ]

Craig Russell commented on JDO-517:
-----------------------------------

>Why are classes annotated with @NotPersistent on fields and @Persistent on properti
es ? I would expect (from other persistence specifications) to have one or the other
 annotated.

If a class is persistence-capable, by default fields of a particular type ar
e persistent. Therefore, to use properties, fields must be marked not persis
tent.

> Annotating fields (with any annotation) implies that fields are used for persisten
ce

I sure didn't read that anywhere in the specification.

>, yet then it encounters properties with more annotations.





> NPE on enhancement of classes with persistent properties
> --------------------------------------------------------
>
>                 Key: JDO-517
>                 URL: https://issues.apache.org/jira/browse/JDO-517
>             Project: JDO
>          Issue Type: Bug
>          Components: tck2
>    Affects Versions: JDO 2 maintenance release 1
>            Reporter: Michelle Caisse
>            Assignee: Andy Jefferson
>
> To reproduce, edit project.propeties, go to the end of the file, and edit 
out the comment and blank lines so that the classes in the companyAnnotatedP
C package are included in the argument list to the enhancer.
> 11:39:16,031 (main) ERROR [JPOX.Enhancer] - An error was encountered reading t
he specified input files. Please consult the log for details. The following may help
 : Errors were encountered when loading the specified MetaData files and classes. Se
e the n
ested exceptions for details
> Errors were encountered when loading the specified MetaData files and clas
ses. See the nested exceptions for details
> org.jpox.exceptions.JPOXUserException: Errors were encountered when loadin
g the specified MetaData files and classes. See the nested exceptions for de
tails
> 	at org.jpox.metadata.MetaDataManager.initialise(MetaDataManager.java:299)
> 	at org.jpox.enhancer.JPOXEnhancer.getFileMetaDataForInput(JPOXEnhancer.ja
va:724)
> 	at org.jpox.enhancer.JPOXEnhancer.main(JPOXEnhancer.java:533)
> Caused by: java.lang.NullPointerException
> 	at org.jpox.metadata.annotations.JDOAnnotationReader.processFieldAnnotati
ons(JDOAnnotationReader.java:1594)
> 	at org.jpox.metadata.annotations.AbstractAnnotationReader.getMetaDataForC
lass(AbstractAnnotationReader.java:211)
> 	at org.jpox.metadata.annotations.AnnotationManagerImpl.getMetaDataForClas
s(AnnotationManagerImpl.java:133)
> 	at org.jpox.metadata.MetaDataManager.loadAnnotationsForClass(MetaDataMana
ger.java:1729)
> 	at org.jpox.metadata.MetaDataManager.initialise(MetaDataManager.java:265)
> 	... 2 more
> Nested Throwables StackTrace:
> java.lang.NullPointerException
> 	at org.jpox.metadata.annotations.JDOAnnotationReader.processFieldAnnotati
ons(JDOAnnotationReader.java:1594)
> 	at org.jpox.metadata.annotations.AbstractAnnotationReader.getMetaDataForC
lass(AbstractAnnotationReader.java:211)
> 	at org.jpox.metadata.annotations.AnnotationManagerImpl.getMetaDataForClas
s(AnnotationManagerImpl.java:133)
> 	at org.jpox.metadata.MetaDataManager.loadAnnotationsForClass(MetaDataMana
ger.java:1729)
> 	at org.jpox.metadata.MetaDataManager.initialise(MetaDataManager.java:265)
> 	at org.jpox.enhancer.JPOXEnhancer.getFileMetaDataForInput(JPOXEnhancer.ja
va:724)
> 	at org.jpox.enhancer.JPOXEnhancer.main(JPOXEnhancer.java:533)
> java.lang.NullPointerException
> 	at org.jpox.metadata.annotations.JDOAnnotationReader.processFieldAnnotati
ons(JDOAnnotationReader.java:1594)
> 	at org.jpox.metadata.annotations.AbstractAnnotationReader.getMetaDataForC
lass(AbstractAnnotationReader.java:211)
> 	at org.jpox.metadata.annotations.AnnotationManagerImpl.getMetaDataForClas
s(AnnotationManagerImpl.java:133)
> 	at org.jpox.metadata.MetaDataManager.loadAnnotationsForClass(MetaDataMana
ger.java:1729)
> 	at org.jpox.metadata.MetaDataManager.initialise(MetaDataManager.java:265)
> 	at org.jpox.enhancer.JPOXEnhancer.getFileMetaDataForInput(JPOXEnhancer.ja
va:724)
> 	at org.jpox.enhancer.JPOXEnhancer.main(JPOXEnhancer.java:533)

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