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via Spring JIRA by Tomas de Priede, 2 years ago
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java.lang.UnsupportedOperationException: No support for uniqueness constraints	at org.datanucleus.store.appengine.DatastoreProperty.(DatastoreProperty.java:80)	at org.datanucleus.store.appengine.DatastoreTable.addDatastoreField(DatastoreTable.java:236)	at org.datanucleus.store.appengine.DatastoreTable.addDatastoreField(DatastoreTable.java:82)	at org.datanucleus.store.appengine.DatastoreMappingManager.createDatastoreField(DatastoreMappingManager.java:156)	at org.datanucleus.store.mapped.mapping.SingleFieldMapping.prepareDatastoreMapping(SingleFieldMapping.java:56)	at org.datanucleus.store.mapped.mapping.SingleFieldMapping.initialize(SingleFieldMapping.java:46)	at org.datanucleus.store.mapped.mapping.MappingFactory.createMapping(MappingFactory.java:97)	at org.datanucleus.store.mapped.mapping.AbstractMappingManager.getMapping(AbstractMappingManager.java:248)	at org.datanucleus.store.appengine.DatastoreTable.initializeNonPK(DatastoreTable.java:322)	at org.datanucleus.store.appengine.DatastoreTable.buildMapping(DatastoreTable.java:288)	at org.datanucleus.store.appengine.DatastoreManager.buildStoreData(DatastoreManager.java:479)	at org.datanucleus.store.appengine.DatastoreManager.newStoreData(DatastoreManager.java:437)	at org.datanucleus.store.AbstractStoreManager.addClasses(AbstractStoreManager.java:788)	at org.datanucleus.store.AbstractStoreManager.addClass(AbstractStoreManager.java:759)	at org.datanucleus.store.mapped.MappedStoreManager.getDatastoreClass(MappedStoreManager.java:358)	at org.datanucleus.store.appengine.DatastoreManager.getDatastoreClass(DatastoreManager.java:709)	at org.datanucleus.store.appengine.query.DatastoreQuery.performExecute(DatastoreQuery.java:214)	at org.datanucleus.store.appengine.query.JPQLQuery.performExecute(JPQLQuery.java:77)	at org.datanucleus.store.query.Query.executeQuery(Query.java:1489)	at org.datanucleus.store.query.Query.executeWithMap(Query.java:1398)	at org.datanucleus.jpa.JPAQuery.getResultList(JPAQuery.java:163)	at ar.com.titan.pizzashop.domain.Pizza_Roo_Entity.findPizzaEntries_aroundBody8(Pizza_Roo_Entity.aj:111)