@Entity
@Table(name = "USERS")
public class User {

   @Id
   @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "user_id_seq")
   @SequenceGenerator(name = "user_id_seq", sequenceName = "user_id_seq")
   private long id;

   @Column(length = 50, nullable = false, unique = true)
   private String email;

   @Column(length = 50, nullable = false)
   private String firstName;

   @Column(length = 50, nullable = false)
   private String lastName;

   public long getId() {
      return id;
   }

   public void setId(long id) {
      this.id = id;
   }

   public String getEmail() {
      return email;
   }

   public void setEmail(String email) {
      this.email = email;
   }

   public String getFirstName() {
      return firstName;
   }

   public void setFirstName(String firstName) {
      this.firstName = firstName;
   }

   public String getLastName() {
      return lastName;
   }

   public void setLastName(String lastName) {
      this.lastName = lastName;
   }

   public User() {
   }

   public User(String email, String firstName, String lastName) {
      this.email = email;
      this.firstName = firstName;
      this.lastName = lastName;
   }

   @Embeddable
   public static class Data {

      @Column(length = 50, unique = true)
      private String data;

      public Data(String data) {
         setData(data);
      }

      public String getData() {
         return data;
      }

      public void setData(String data) {
         this.data = data.toLowerCase();
      }
   }

   @Embedded
   private Data cookie;

   public Data getData() {
      return cookie;
   }

   public void setData(Data cookie) {
      this.cookie = cookie;
   }

}

@Test
public void thisWorks() {
   USER = new User(EMAIL, FIRSTNAME, LASTNAME);
   daoUnderTest.save(USER);
}

2009-06-29 13:21:54,953 [main] INFO  org.hibernate.tool.hbm2ddl.SchemaExport - Running hbm2ddl schema export
2009-06-29 13:21:54,968 [main] INFO  org.hibernate.tool.hbm2ddl.SchemaExport - exporting generated schema to database
2009-06-29 13:21:54,984 [main] INFO  org.hibernate.tool.hbm2ddl.SchemaExport - schema export complete
2009-06-29 13:21:55,187 [main] INFO  org.springframework.test.context.transaction.TransactionalTestExecutionListener - Began transaction (1): transaction manager [org.springframework.orm.hibernate3.HibernateTransactionManager@15c97e4]; rollback [true]
2009-06-29 13:21:55,187 [main] DEBUG org.hibernate.SQL - call next value for user_id_seq
2009-06-29 13:21:55,218 [main] DEBUG org.hibernate.SQL - insert into USERS (data, email, firstName, lastName, id) values (?, ?, ?, ?, ?)
2009-06-29 13:21:55,234 [main] INFO  org.springframework.test.context.transaction.TransactionalTestExecutionListener - Rolled back transaction after test execution for test context [[TestContext@1be8711 testClass = UserDaoImplTestCase, locations = array<String>['classpath:applicationContext-test.xml', 'classpath:daoBeans.xml'], testInstance = com.bytekugel.bienenstock.model.dao.impl.UserDaoImplTestCase@1958cc2, testMethod = playground@UserDaoImplTestCase, testException = [null]]]

@Test
public void problemHere() {
   USER = new User(EMAIL, FIRSTNAME, LASTNAME);
   USER.setData(new User.Data("joh"));
   daoUnderTest.save(USER);
}

2009-06-29 13:23:55,718 [main] INFO  org.hibernate.tool.hbm2ddl.SchemaExport - Running hbm2ddl schema export
2009-06-29 13:23:55,718 [main] INFO  org.hibernate.tool.hbm2ddl.SchemaExport - exporting generated schema to database
2009-06-29 13:23:55,734 [main] INFO  org.hibernate.tool.hbm2ddl.SchemaExport - schema export complete
2009-06-29 13:23:55,937 [main] INFO  org.springframework.test.context.transaction.TransactionalTestExecutionListener - Began transaction (1): transaction manager [org.springframework.orm.hibernate3.HibernateTransactionManager@1478a2d]; rollback [true]
2009-06-29 13:23:55,937 [main] DEBUG org.hibernate.SQL - call next value for user_id_seq
2009-06-29 13:23:55,984 [main] DEBUG org.hibernate.SQL - update USERS set data=?, email=?, firstName=?, lastName=? where id=?
2009-06-29 13:23:55,984 [main] ERROR org.hibernate.jdbc.AbstractBatcher - Exception executing batch:
org.hibernate.StaleStateException: Batch update returned unexpected row count from update [0]; actual row count: 0; expected: 1
   at org.hibernate.jdbc.Expectations$BasicExpectation.checkBatched(Expectations.java:61)
   at org.hibernate.jdbc.Expectations$BasicExpectation.verifyOutcome(Expectations.java:46)
   at org.hibernate.jdbc.BatchingBatcher.checkRowCounts(BatchingBatcher.java:68)
   at org.hibernate.jdbc.BatchingBatcher.doExecuteBatch(BatchingBatcher.java:48)
   at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:246)
   at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:266)
   at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:168)
   at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:298)
   at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27)
   at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000)
   at org.springframework.orm.hibernate3.HibernateTransactionManager$HibernateTransactionObject.flush(HibernateTransactionManager.java:891)
   at org.springframework.transaction.support.DefaultTransactionStatus.flush(DefaultTransactionStatus.java:165)
   at org.springframework.test.context.transaction.TransactionalTestExecutionListener$TransactionContext.endTransaction(TransactionalTestExecutionListener.java:501)
   at org.springframework.test.context.transaction.TransactionalTestExecutionListener.endTransaction(TransactionalTestExecutionListener.java:277)
   at org.springframework.test.context.transaction.TransactionalTestExecutionListener.afterTestMethod(TransactionalTestExecutionListener.java:170)
   at org.springframework.test.context.TestContextManager.afterTestMethod(TestContextManager.java:364)
   at org.springframework.test.context.junit4.statements.RunSpringTestContextAfters.evaluate(RunSpringTestContextAfters.java:90)
   at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:72)
   at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:210)
   at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:46)
   at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:180)
   at org.junit.runners.ParentRunner.access$000(ParentRunner.java:41)
   at org.junit.runners.ParentRunner$1.evaluate(ParentRunner.java:173)
   at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
   at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
   at org.junit.runners.ParentRunner.run(ParentRunner.java:220)
   at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:191)
   at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:45)
   at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
   at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
   at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
   at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
   at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)
2009-06-29 13:23:55,984 [main] ERROR org.hibernate.event.def.AbstractFlushingEventListener - Could not synchronize database state with session
org.hibernate.StaleStateException: Batch update returned unexpected row count from update [0]; actual row count: 0; expected: 1
   at org.hibernate.jdbc.Expectations$BasicExpectation.checkBatched(Expectations.java:61)
   at org.hibernate.jdbc.Expectations$BasicExpectation.verifyOutcome(Expectations.java:46)
   at org.hibernate.jdbc.BatchingBatcher.checkRowCounts(BatchingBatcher.java:68)
   at org.hibernate.jdbc.BatchingBatcher.doExecuteBatch(BatchingBatcher.java:48)
   at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:246)
   at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:266)
   at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:168)
   at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:298)
   at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27)
   at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000)
   at org.springframework.orm.hibernate3.HibernateTransactionManager$HibernateTransactionObject.flush(HibernateTransactionManager.java:891)
   at org.springframework.transaction.support.DefaultTransactionStatus.flush(DefaultTransactionStatus.java:165)
   at org.springframework.test.context.transaction.TransactionalTestExecutionListener$TransactionContext.endTransaction(TransactionalTestExecutionListener.java:501)
   at org.springframework.test.context.transaction.TransactionalTestExecutionListener.endTransaction(TransactionalTestExecutionListener.java:277)
   at org.springframework.test.context.transaction.TransactionalTestExecutionListener.afterTestMethod(TransactionalTestExecutionListener.java:170)
   at org.springframework.test.context.TestContextManager.afterTestMethod(TestContextManager.java:364)
   at org.springframework.test.context.junit4.statements.RunSpringTestContextAfters.evaluate(RunSpringTestContextAfters.java:90)
   at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:72)
   at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:210)
   at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:46)
   at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:180)
   at org.junit.runners.ParentRunner.access$000(ParentRunner.java:41)
   at org.junit.runners.ParentRunner$1.evaluate(ParentRunner.java:173)
   at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
   at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
   at org.junit.runners.ParentRunner.run(ParentRunner.java:220)
   at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:191)
   at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:45)
   at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
   at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
   at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
   at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
   at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)
2009-06-29 13:23:55,984 [main] WARN  org.springframework.test.context.TestContextManager - Caught exception while allowing TestExecutionListener [org.springframework.test.context.transaction.TransactionalTestExecutionListener@c1a0eb] to process 'after' execution for test: method [public void com.bytekugel.bienenstock.model.dao.impl.UserDaoImplTestCase.playground()], instance [com.bytekugel.bienenstock.model.dao.impl.UserDaoImplTestCase@2bccb2], exception [org.springframework.orm.hibernate3.HibernateSystemException: No default constructor for entity: com.bytekugel.bienenstock.model.User$Data; nested exception is org.hibernate.InstantiationException: No default constructor for entity: com.bytekugel.bienenstock.model.User$Data]
org.springframework.orm.hibernate3.HibernateOptimisticLockingFailureException: Batch update returned unexpected row count from update [0]; actual row count: 0; expected: 1; nested exception is org.hibernate.StaleStateException: Batch update returned unexpected row count from update [0]; actual row count: 0; expected: 1
   at org.springframework.orm.hibernate3.SessionFactoryUtils.convertHibernateAccessException(SessionFactoryUtils.java:670)
   at org.springframework.orm.hibernate3.HibernateTransactionManager.convertHibernateAccessException(HibernateTransactionManager.java:793)
   at org.springframework.orm.hibernate3.HibernateTransactionManager$HibernateTransactionObject.flush(HibernateTransactionManager.java:894)
   at org.springframework.transaction.support.DefaultTransactionStatus.flush(DefaultTransactionStatus.java:165)
   at org.springframework.test.context.transaction.TransactionalTestExecutionListener$TransactionContext.endTransaction(TransactionalTestExecutionListener.java:501)
   at org.springframework.test.context.transaction.TransactionalTestExecutionListener.endTransaction(TransactionalTestExecutionListener.java:277)
   at org.springframework.test.context.transaction.TransactionalTestExecutionListener.afterTestMethod(TransactionalTestExecutionListener.java:170)
   at org.springframework.test.context.TestContextManager.afterTestMethod(TestContextManager.java:364)
   at org.springframework.test.context.junit4.statements.RunSpringTestContextAfters.evaluate(RunSpringTestContextAfters.java:90)
   at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:72)
   at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:210)
   at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:46)
   at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:180)
   at org.junit.runners.ParentRunner.access$000(ParentRunner.java:41)
   at org.junit.runners.ParentRunner$1.evaluate(ParentRunner.java:173)
   at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:28)
   at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:31)
   at org.junit.runners.ParentRunner.run(ParentRunner.java:220)
   at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:191)
   at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:45)
   at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
   at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
   at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
   at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
   at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)
Caused by: org.hibernate.StaleStateException: Batch update returned unexpected row count from update [0]; actual row count: 0; expected: 1
   at org.hibernate.jdbc.Expectations$BasicExpectation.checkBatched(Expectations.java:61)
   at org.hibernate.jdbc.Expectations$BasicExpectation.verifyOutcome(Expectations.java:46)
   at org.hibernate.jdbc.BatchingBatcher.checkRowCounts(BatchingBatcher.java:68)
   at org.hibernate.jdbc.BatchingBatcher.doExecuteBatch(BatchingBatcher.java:48)
   at org.hibernate.jdbc.AbstractBatcher.executeBatch(AbstractBatcher.java:246)
   at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:266)
   at org.hibernate.engine.ActionQueue.executeActions(ActionQueue.java:168)
   at org.hibernate.event.def.AbstractFlushingEventListener.performExecutions(AbstractFlushingEventListener.java:298)
   at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:27)
   at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000)
   at org.springframework.orm.hibernate3.HibernateTransactionManager$HibernateTransactionObject.flush(HibernateTransactionManager.java:891)
   ... 22 more

*/