[jira] Commented: (OPENJPA-733) Entity contains pseudo-attached embeddable after detach

["Jeremy Bauer (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/OPENJPA-733?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12638632#action_12638632 ] 

Jeremy Bauer commented on OPENJPA-733:
--------------------------------------

Here is a link to forum conversation on nabble for reference:  http://n2.nabble.com/Problem-with-detaching-embedded-class-in-OpenJPA-1.2-using-compile-time-enhancement-td1117628.html

> Entity contains pseudo-attached embeddable after detach
> -------------------------------------------------------
>
>                 Key: OPENJPA-733
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-733
>             Project: OpenJPA
>          Issue Type: Bug
>          Components: kernel
>    Affects Versions: 1.2.0
>            Reporter: Jeremy Bauer
>            Assignee: Jeremy Bauer
>             Fix For: 1.2.1, 1.3.0
>
>         Attachments: OPENJPA-733.patch, OPENJPA-733_smimpl.patch, OPENJPA-733_test.patch
>
>
> Problem reported by Chris Tillman on user forum and can be easily reproduced with the code provided:
> When upgrading a standalone Java application from OpenJPA 1.1 to 1.2 i ran
> into a problem regarding embedded classes.
> Accessing a field from an embedded class (say, Address) in a detached entity
> (Customer) doesn't seem to work anymore. OpenJPA 1.2 throws an
> InvalidStateException. It worked fine with OpenJPA 1.1.
> The field (street) contains the correct value as loaded from the database,
> but when the getter is used, e.g. customer.getAddress().getStreet(), the ISE
> is thrown:
> org.apache.openjpa.persistence.InvalidStateException: The context has been
> closed.
>        at org.apache.openjpa.kernel.BrokerImpl.assertOpen(BrokerImpl.java:4367)
>        at
> org.apache.openjpa.kernel.BrokerImpl.beginOperation(BrokerImpl.java:1766)
>        at org.apache.openjpa.kernel.BrokerImpl.isActive(BrokerImpl.java:1736)
>        at
> org.apache.openjpa.kernel.StateManagerImpl.beforeRead(StateManagerImpl.java:941)
>        at
> org.apache.openjpa.kernel.StateManagerImpl.accessingField(StateManagerImpl.java:1476)
>        at org.test.Address.pcGetstreet(Address.java)
>        at org.test.Address.getStreet(Address.java:22)
>        at org.test.Test.main(Test.java:30)
> Upon investigation, it seems to work OK in OpenJPA 1.2 using runtime
> enhancement (Java 6) but not using compile-time enhancement. However, in
> OpenJPA 1.1 it's the other way around.
> OpenJPA 1.1 with compile-time enhancement uses a DetachedStateManager for
> both the entity and the embeddable. As can be seen from the stacktrace,
> OpenJPA 1.2 uses a StateManagerImpl instead for the embeddable.
> Is this a regression in OpenJPA 1.2?
> Test code below:
> //-------------------------
> package org.test;
> import java.util.List;
> import javax.persistence.*;
> public class Test {
>        public static void main(String[] args) {
>                EntityManagerFactory factory = Persistence
>                                .createEntityManagerFactory("test");
>                Customer customer = new Customer();
>                Address address = new Address();
>                customer.setLastName("Doe");
>                address.setStreet("Main Street");
>                customer.setAddress(address);
>                try {
>                        persistCustomer(factory, customer);
>                        customer = queryCustomers(factory,
>                                        "select customer from Customer customer" +
>                                        " where customer.lastName = 'Doe'")
>                                        .get(0);
>                        System.out.println(customer.getLastName());
>                        System.out.println(customer.getAddress().getStreet());
>                        factory.close();
>                } catch (Throwable t) {
>                        t.printStackTrace();
>                }
>        }
>        static void persistCustomer(EntityManagerFactory factory, Customer
> customer)
>                        throws Exception {
>                final EntityManager em = factory.createEntityManager();
>                final EntityTransaction tx = em.getTransaction();
>                tx.begin();
>                try {
>                        em.persist(customer);
>                        tx.commit();
>                } finally {
>                        if (!tx.isActive()) {
>                                em.close();
>                        }
>                }
>        }
>        public static List<Customer> queryCustomers(EntityManagerFactory factory,
>                        String query) throws Exception {
>                final EntityManager em = factory.createEntityManager();
>                final EntityTransaction tx = em.getTransaction();
>                tx.begin();
>                try {
>                        final List<Customer> list = (List<Customer>) em.createQuery(query)
>                                        .getResultList();
>                        tx.commit();
>                        return list;
>                } finally {
>                        if (!tx.isActive()) {
>                                em.close();
>                        }
>                }
>        }
> }
> //-------------------------
> package org.test;
> import javax.persistence.*;
> @Entity
> public class Customer {
>        @Id @GeneratedValue long id;
>        @Basic String lastName;
>        @Embedded Address address;
>        public String getLastName() {
>                return lastName;
>        }
>        public void setLastName(String lastName) {
>                this.lastName = lastName;
>        }
>        public Address getAddress() {
>                return address;
>        }
>        public void setAddress(Address address) {
>                this.address = address;
>        }
> }
> //-------------------------
> package org.test;
> import javax.persistence.*;
> @Embeddable
> public class Address {
>        @Basic String street;
>        public String getStreet() {
>                return street;
>        }
>        public void setStreet(String street) {
>                this.street = street;
>        }
> }

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