indexed column treated like a PK -------------------------------- Key: JPA-18 URL: http://opensource.atlassian.com/projects/hibernate/browse/JPA-18 Project: Java Persistence API Issue Type: Bug Affects Versions: 1.0.0 Environment: JPA 2.0 with hibernate as provider, Glassfish3.1, MySQL 5.1 Reporter: Cristian Jujea I have a rather simple table: CREATE TABLE ShopOrder( shopOrderId MEDIUMINT AUTO_INCREMENT PRIMARY KEY, ...... shopperId MEDIUMINT, INDEX(shopperId) ); The JPA Entity is: @Entity @Table(name = "shoporder") @Access(AccessType.FIELD) @NamedQueries({ @NamedQuery(name = "ShopOrder.countOrdersByShopperId", query = "SELECT COUNT(*) FROM ShopOrder s WHERE shopperId = :shopperId")}) public class ShopOrder implements Serializable { private static final long serialVersionUID = 1L; @Id @GeneratedValue(strategy = GenerationType.IDENTITY) private Integer shopOrderId; ..... @Column(name="shopperId") private Integer shopperId; //getters and setters } The code that throws the error: @Stateless public class ShopperFacade implements ShopperFacadeRemote { @PersistenceContext(unitName="WebShopEJBPU") EntityManager entityManager; @Override public int createOrder(int shopperId, String... args) { ShopOrder shopOrder = new ShopOrder(); shopOrder.setAmount("0"); List<String> items = new ArrayList<String>(); for(int i = 1; i < args.length; i++) items.add(args[i]); shopOrder.setItems(items); shopOrder.setShopperId(shopperId); entityManager.persist(shopOrder); entityManager.flush(); return shopOrder.getShopOrderId(); } The error: javax.persistence.PersistenceException: org.hibernate.PersistentObjectException: detached entity passed to persist: shop.entities.shopper.ShopOrder at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1215) at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1148) at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1154) at org.hibernate.ejb.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:678) at com.sun.enterprise.container.common.impl.EntityManagerWrapper.persist(EntityManagerWrapper.java:269) at shop.ejb.ShopperFacade.createOrder(ShopperFacade.java:121) 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 org.glassfish.ejb.security.application.EJBSecurityManager.runMethod(EJBSecurityManager.java:1052) at org.glassfish.ejb.security.application.EJBSecurityManager.invoke(EJBSecurityManager.java:1124) at com.sun.ejb.containers.BaseContainer.invokeBeanMethod(BaseContainer.java:5367) at com.sun.ejb.EjbInvocation.invokeBeanMethod(EjbInvocation.java:619) at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:801) at com.sun.ejb.EjbInvocation.proceed(EjbInvocation.java:571) at com.sun.ejb.containers.interceptors.SystemInterceptorProxy.doAround(SystemInterceptorProxy.java:162) at com.sun.ejb.containers.interceptors.SystemInterceptorProxy.aroundInvoke(SystemInterceptorProxy.java:144) 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.sun.ejb.containers.interceptors.AroundInvokeInterceptor.intercept(InterceptorManager.java:862) at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:801) at com.sun.ejb.containers.interceptors.InterceptorManager.intercept(InterceptorManager.java:371) at com.sun.ejb.containers.BaseContainer.__intercept(BaseContainer.java:5339) at com.sun.ejb.containers.BaseContainer.intercept(BaseContainer.java:5327) at com.sun.ejb.containers.EJBObjectInvocationHandler.invoke(EJBObjectInvocationHandler.java:206) ... 19 more Caused by: org.hibernate.PersistentObjectException: detached entity passed to persist: shop.entities.shopper.ShopOrder at org.hibernate.event.def.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:127) at org.hibernate.event.def.DefaultPersistEventListener.onPersist(DefaultPersistEventListener.java:61) at org.hibernate.impl.SessionImpl.firePersist(SessionImpl.java:808) at org.hibernate.impl.SessionImpl.persist(SessionImpl.java:782) at org.hibernate.impl.SessionImpl.persist(SessionImpl.java:786) at org.hibernate.ejb.AbstractEntityManagerImpl.persist(AbstractEntityManagerImpl.java:672) ... 43 more The problem does not occur if the line of code setting the shopperId is commented, as such: @Override public int createOrder(int shopperId, String... args) { ShopOrder shopOrder = new ShopOrder(); shopOrder.setAmount("0"); List<String> items = new ArrayList<String>(); for(int i = 1; i < args.length; i++) items.add(args[i]); shopOrder.setItems(items); //shopOrder.setShopperId(shopperId); entityManager.persist(shopOrder); entityManager.flush(); return shopOrder.getShopOrderId(); } If I change the code as such: ShopOrder shopOrder = new ShopOrder(); shopOrder.setAmount("0"); List<String> items = new ArrayList<String>(); for(int i = 1; i < args.length; i++) items.add(args[i]); shopOrder.setItems(items); entityManager.persist(shopOrder); entityManager.flush(); shopOrder.setShopperId(shopperId); entityManager.merge(shopOrder); entityManager.flush(); I get javax.persistence.PersistenceException: org.hibernate.HibernateException: identifier of an instance of shop.entities.shopper.ShopOrder was altered from 11 to 12 at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1215) at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1148) at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1154) at org.hibernate.ejb.AbstractEntityManagerImpl.flush(AbstractEntityManagerImpl.java:798) at com.sun.enterprise.container.common.impl.EntityManagerWrapper.flush(EntityManagerWrapper.java:418) at shop.ejb.ShopperFacade.createOrder(ShopperFacade.java:125) 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 org.glassfish.ejb.security.application.EJBSecurityManager.runMethod(EJBSecurityManager.java:1052) at org.glassfish.ejb.security.application.EJBSecurityManager.invoke(EJBSecurityManager.java:1124) at com.sun.ejb.containers.BaseContainer.invokeBeanMethod(BaseContainer.java:5367) at com.sun.ejb.EjbInvocation.invokeBeanMethod(EjbInvocation.java:619) at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:801) at com.sun.ejb.EjbInvocation.proceed(EjbInvocation.java:571) at com.sun.ejb.containers.interceptors.SystemInterceptorProxy.doAround(SystemInterceptorProxy.java:162) at com.sun.ejb.containers.interceptors.SystemInterceptorProxy.aroundInvoke(SystemInterceptorProxy.java:144) 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.sun.ejb.containers.interceptors.AroundInvokeInterceptor.intercept(InterceptorManager.java:862) at com.sun.ejb.containers.interceptors.AroundInvokeChainImpl.invokeNext(InterceptorManager.java:801) at com.sun.ejb.containers.interceptors.InterceptorManager.intercept(InterceptorManager.java:371) at com.sun.ejb.containers.BaseContainer.__intercept(BaseContainer.java:5339) at com.sun.ejb.containers.BaseContainer.intercept(BaseContainer.java:5327) at com.sun.ejb.containers.EJBObjectInvocationHandler.invoke(EJBObjectInvocationHandler.java:206) ... 19 more Caused by: org.hibernate.HibernateException: identifier of an instance of shop.entities.shopper.ShopOrder was altered from 11 to 12 at org.hibernate.event.def.DefaultFlushEntityEventListener.checkId(DefaultFlushEntityEventListener.java:85) at org.hibernate.event.def.DefaultFlushEntityEventListener.getValues(DefaultFlushEntityEventListener.java:190) at org.hibernate.event.def.DefaultFlushEntityEventListener.onFlushEntity(DefaultFlushEntityEventListener.java:147) at org.hibernate.event.def.AbstractFlushingEventListener.flushEntities(AbstractFlushingEventListener.java:219) at org.hibernate.event.def.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:99) at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:50) at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1216) at org.hibernate.ejb.AbstractEntityManagerImpl.flush(AbstractEntityManagerImpl.java:795) ... 43 more It is as if the indexed column is treated like a PK -- This message is automatically generated by JIRA. 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