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From "Craig Russell (JIRA)" <j...@apache.org>
Subject [jira] Commented: (JDO-517) NPE on enhancement of classes with persistent properties
Date Tue, 14 Aug 2007 22:47:31 GMT

    [ https://issues.apache.org/jira/browse/JDO-517?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#action_12519809
] 

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

>Why are classes annotated with @NotPersistent on fields and @Persistent on properties
? 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 are persistent.
Therefore, to use properties, fields must be marked not persistent.

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

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 companyAnnotatedPC package are included in the
argument list to the enhancer.
> 11:39:16,031 (main) ERROR [JPOX.Enhancer] - An error was encountered reading the specified
input files. Please consult the log for details. The following may help : Errors were encountered
when loading the specified MetaData files and classes. See the nested exceptions for details
> Errors were encountered when loading the specified MetaData files and classes. See the
nested exceptions for details
> org.jpox.exceptions.JPOXUserException: Errors were encountered when loading the specified
MetaData files and classes. See the nested exceptions for details
> 	at org.jpox.metadata.MetaDataManager.initialise(MetaDataManager.java:299)
> 	at org.jpox.enhancer.JPOXEnhancer.getFileMetaDataForInput(JPOXEnhancer.java:724)
> 	at org.jpox.enhancer.JPOXEnhancer.main(JPOXEnhancer.java:533)
> Caused by: java.lang.NullPointerException
> 	at org.jpox.metadata.annotations.JDOAnnotationReader.processFieldAnnotations(JDOAnnotationReader.java:1594)
> 	at org.jpox.metadata.annotations.AbstractAnnotationReader.getMetaDataForClass(AbstractAnnotationReader.java:211)
> 	at org.jpox.metadata.annotations.AnnotationManagerImpl.getMetaDataForClass(AnnotationManagerImpl.java:133)
> 	at org.jpox.metadata.MetaDataManager.loadAnnotationsForClass(MetaDataManager.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.processFieldAnnotations(JDOAnnotationReader.java:1594)
> 	at org.jpox.metadata.annotations.AbstractAnnotationReader.getMetaDataForClass(AbstractAnnotationReader.java:211)
> 	at org.jpox.metadata.annotations.AnnotationManagerImpl.getMetaDataForClass(AnnotationManagerImpl.java:133)
> 	at org.jpox.metadata.MetaDataManager.loadAnnotationsForClass(MetaDataManager.java:1729)
> 	at org.jpox.metadata.MetaDataManager.initialise(MetaDataManager.java:265)
> 	at org.jpox.enhancer.JPOXEnhancer.getFileMetaDataForInput(JPOXEnhancer.java:724)
> 	at org.jpox.enhancer.JPOXEnhancer.main(JPOXEnhancer.java:533)
> java.lang.NullPointerException
> 	at org.jpox.metadata.annotations.JDOAnnotationReader.processFieldAnnotations(JDOAnnotationReader.java:1594)
> 	at org.jpox.metadata.annotations.AbstractAnnotationReader.getMetaDataForClass(AbstractAnnotationReader.java:211)
> 	at org.jpox.metadata.annotations.AnnotationManagerImpl.getMetaDataForClass(AnnotationManagerImpl.java:133)
> 	at org.jpox.metadata.MetaDataManager.loadAnnotationsForClass(MetaDataManager.java:1729)
> 	at org.jpox.metadata.MetaDataManager.initialise(MetaDataManager.java:265)
> 	at org.jpox.enhancer.JPOXEnhancer.getFileMetaDataForInput(JPOXEnhancer.java:724)
> 	at org.jpox.enhancer.JPOXEnhancer.main(JPOXEnhancer.java:533)

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