Joe, I copied your class, and get the same exception. One thing I see you're doing is attempting to annotate a method, when you should be annotating properties. I also see you don't have an @Id, or @Basic property annotations. I'm know to this, too, but I hope it helps.
Guser On Feb 2, 2:58 pm, Joe Hudson <joe...@gmail.com> wrote: > Hello, > > I am using the Google App Engine Eclipse plugin and get an error when > I save a Java class with a get(String) method. > > The enhancer is throwing a NullPointerException. I have added the > transient annotation and don't know what else I can do to avoid this > issue. Can anyobody please give me some advice? > > I am using datanucleus-jpa-1.1.5.jar > > I also posted this to the datanucleus forum but there doesn't seem to > be too much activity there so I was hoping I would get some ideas here > as well. http://www.jpox.org/servlet/forum/viewthread_thread,5954#31824 > > Thank you very much. > > The referenced code is below: > > @Entity > public class TestEntity implements Serializable { > > private String dummyProperty; > > public String getDummyProperty() { > return dummyProperty; > } > > public void setDummyProperty(String dummyProperty) { > this.dummyProperty = dummyProperty; > } > > @Transient > public Object get(String key) { > return null; > } > > } > > And, here is the stack trace: > > DataNucleus Enhancer (version 1.1.4) : Enhancement of classes > Errors were encountered when loading the specified MetaData files and > classes. See the nested exceptions for details > Feb 2, 2010 1:45:24 PM org.datanucleus.enhancer.DataNucleusEnhancer > main > SEVERE: DataNucleus Enhancer completed with an error. Please review > the enhancer log for full details. Some classes may have been enhanced > but some caused errors > Errors were encountered when loading the specified MetaData files and > classes. See the nested exceptions for details > org.datanucleus.exceptions.NucleusUserException: Errors were > encountered when loading the specified MetaData files and classes. See > the nested exceptions for details > at org.datanucleus.metadata.MetaDataManager.loadClasses > (MetaDataManager.java:426) > at org.datanucleus.enhancer.DataNucleusEnhancer.getFileMetadataForInput > (DataNucleusEnhancer.java:743) > at org.datanucleus.enhancer.DataNucleusEnhancer.enhance > (DataNucleusEnhancer.java:545) > at org.datanucleus.enhancer.DataNucleusEnhancer.main > (DataNucleusEnhancer.java:1252) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at sun.reflect.NativeMethodAccessorImpl.invoke > (NativeMethodAccessorImpl.java:39) > at sun.reflect.DelegatingMethodAccessorImpl.invoke > (DelegatingMethodAccessorImpl.java:25) > at java.lang.reflect.Method.invoke(Method.java:597) > at com.google.appengine.tools.enhancer.Enhancer.execute(Enhancer.java: > 57) > at com.google.appengine.tools.enhancer.Enhance.<init>(Enhance.java:60) > at com.google.appengine.tools.enhancer.Enhance.main(Enhance.java:41) > Caused by: java.lang.NullPointerException > at > org.datanucleus.jpa.metadata.JPAAnnotationReader.processMemberAnnotations > (JPAAnnotationReader.java:8 > 53) > at > org.datanucleus.metadata.annotations.AbstractAnnotationReader.getMetaDataFo > rClass > (AbstractAnnotation > Reader.java:159) > at > org.datanucleus.metadata.annotations.AnnotationManagerImpl.getMetaDataForCl > ass > (AnnotationManagerImpl > .java:136) > at org.datanucleus.metadata.MetaDataManager.loadAnnotationsForClass > (MetaDataManager.java:2278) > at org.datanucleus.metadata.MetaDataManager.loadClasses > (MetaDataManager.java:385) > ... 10 more > Nested Throwables StackTrace: > DataNucleus Enhancer completed with an error. Please review the > enhancer log for full details. Some classes may have been enhanced but > some caused errors > java.lang.NullPointerException > DataNucleus Enhancer completed and no classes were enhanced. Consult > the log for full details > at > org.datanucleus.jpa.metadata.JPAAnnotationReader.processMemberAnnotations > (JPAAnnotationReader.java:8 > 53) > at > org.datanucleus.metadata.annotations.AbstractAnnotationReader.getMetaDataFo > rClass > (AbstractAnnotation > Reader.java:159) > at > org.datanucleus.metadata.annotations.AnnotationManagerImpl.getMetaDataForCl > ass > (AnnotationManagerImpl > .java:136) > at org.datanucleus.metadata.MetaDataManager.loadAnnotationsForClass > (MetaDataManager.java:2278) > at org.datanucleus.metadata.MetaDataManager.loadClasses > (MetaDataManager.java:385) > at org.datanucleus.enhancer.DataNucleusEnhancer.getFileMetadataForInput > (DataNucleusEnhancer.java:743) > at org.datanucleus.enhancer.DataNucleusEnhancer.enhance > (DataNucleusEnhancer.java:545) > at org.datanucleus.enhancer.DataNucleusEnhancer.main > (DataNucleusEnhancer.java:1252) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at sun.reflect.NativeMethodAccessorImpl.invoke > (NativeMethodAccessorImpl.java:39) > at sun.reflect.DelegatingMethodAccessorImpl.invoke > (DelegatingMethodAccessorImpl.java:25) > at java.lang.reflect.Method.invoke(Method.java:597) > at com.google.appengine.tools.enhancer.Enhancer.execute(Enhancer.java: > 57) > at com.google.appengine.tools.enhancer.Enhance.<init>(Enhance.java:60) > at com.google.appengine.tools.enhancer.Enhance.main(Enhance.java:41) -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. 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