Error using dynamic-component with JPA -------------------------------------- Key: HHH-6639 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-6639 Project: Hibernate Core Issue Type: Bug Affects Versions: 3.6.7 Environment: MySQL 5.0.1, Java 1.6.0_26 Reporter: Wölfle Attachments: testJPA.tar.gz Hi, there seems to be a bug when using dynamic-components and an EntityManager. When using hibernate directly, everything works fine. If using the EntityManager, the following exception is thrown, because for the dynamic attributes no members in the Entity class exist (which is the intention of dynamic-attributes, as far as I understood them). Exception in thread "main" java.lang.IllegalArgumentException: Cannot determine java-type from given member [null] at org.hibernate.ejb.metamodel.AttributeFactory$BaseAttributeMetadata.<init>(AttributeFactory.java:608) at org.hibernate.ejb.metamodel.AttributeFactory$SingularAttributeMetadataImpl.<init>(AttributeFactory.java:696) at org.hibernate.ejb.metamodel.AttributeFactory$SingularAttributeMetadataImpl.<init>(AttributeFactory.java:686) at org.hibernate.ejb.metamodel.AttributeFactory.determineAttributeMetadata(AttributeFactory.java:559) at org.hibernate.ejb.metamodel.AttributeFactory.buildAttribute(AttributeFactory.java:93) at org.hibernate.ejb.metamodel.AttributeFactory.getMetaModelType(AttributeFactory.java:225) at org.hibernate.ejb.metamodel.AttributeFactory.buildAttribute(AttributeFactory.java:102) at org.hibernate.ejb.metamodel.MetadataContext.wrapUp(MetadataContext.java:187) at org.hibernate.ejb.metamodel.MetamodelImpl.buildMetamodel(MetamodelImpl.java:66) at org.hibernate.ejb.EntityManagerFactoryImpl.<init>(EntityManagerFactoryImpl.java:84) at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:906) at org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:57) at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:48) at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:32) at test.Test.main(Test.java:24) Attached is a tar.tz file with a sample hibernate project and a junit test that reproduces the problem. -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira