We are unable to use two fileds as the compisit primary keys in google datastore, its throwing follwing exception if we make two fields as primary key fileds.please help us to resolve this iusse
our company class has two primary keys as below, we are using companyId,docId as primary keys ******************************************************************************************************* @PersistenceCapable(identityType=IdentityType.DATASTORE) public class Company{ @PrimaryKey @Persistent(valueStrategy = IdGeneratorStrategy.SEQUENCE) private Long companyId; @PrimaryKey String docId } if we start the server we are getting the following Exception : ********************************************************************************s May 11, 2010 10:07:31 AM org.datanucleus.metadata.AbstractClassMetaData determineObjectIdClass SEVERE: Class com.atp.smartstore.DB.config.User has application- identity and no objectid-class specified yet has 2 primary key fields. Unable to use SingleFieldIdentity. Class com.atp.smartstore.DB.config.User has application-identity and no objectid-class specified yet has 2 primary key fields. Unable to use SingleFieldIdentity. May 11, 2010 10:07:31 AM 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 Class com.atp.smartstore.DB.config.User has application-identity and no objectid-class specified yet has 2 primary key fields. Unable to use SingleFieldIdentity. org.datanucleus.metadata.InvalidMetaDataException: Class com.atp.smartstore.DB.config.User has application-identity and no objectid-class specified yet has 2 primary key fields. Unable to use SingleFieldIdentity. at org.datanucleus.metadata.AbstractClassMetaData.determineObjectIdClass(AbstractClassMetaData.java: 1032) at org.datanucleus.metadata.ClassMetaData.populate(ClassMetaData.java: 205) at org.datanucleus.metadata.MetaDataManager $1.run(MetaDataManager.java:2317) at java.security.AccessController.doPrivileged(Native Method) at org.datanucleus.metadata.MetaDataManager.populateAbstractClassMetaData(MetaDataManager.java: 2311) at org.datanucleus.metadata.MetaDataManager.populateFileMetaData(MetaDataManager.java: 2148) at org.datanucleus.metadata.MetaDataManager.initialiseFileMetaDataForUse(MetaDataManager.java: 864) at org.datanucleus.metadata.MetaDataManager.loadClasses(MetaDataManager.java: 433) 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:585) 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. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.