Hades

Using 0.5.0 when trying to execute a named query from my interface extending GenericDAO I get an exception "object is not an instance of declaring class". I have other named queries working just fine, but there is a problem here and I just don't know how to find it. Any suggestions would be greatly appreciated.

I simplified the query down to something really basic. Here is my setup:

I have a test class that calls the method with this code:
List<ProcessInstanceDTO> processList = getProcessInstanceDao().findAllFooBar();

1 public interface ProcessInstanceDao
2     extends GenericDao<ProcessInstanceDTO, Integer>, ProcessInstanceDaoCustom
3 {
4     public List<ProcessInstanceDTO> findAllFooBar();
5 }

There is only one method in ProcessInstanceDaoCustom, a create method that has nothing to do with this query.

1   <bean id="processInstanceDaoCustom" class="com.hrworx.formworx.dao.process.ProcessInstanceDaoImpl" 
2     parent="daoTemplate" />
3 
4  <hades:dao-config base-package="com.hrworx.formworx.dao.process">
5         <hades:dao id="processInstance" custom-impl-ref="processInstanceDaoCustom" />
6   </hades:dao-config>

Here is the Persistable (I know it is not a DTO but I inherited the naming convention from legacy project code)
The query does not get any simpler than this. If I move the method from the GenericDao implementation to the custom implementation and call the named query from there using getJpaTemplate().findByNamedQuery it works fine, so I know the query is OK.

 1 @NamedQueries( { @NamedQuery(name = "FindAllFooBar", query = "FROM com.hrworx.formworx.model.process.ProcessInstanceDTO")})
 2 
 3 @Entity
 4 @Table(name = "Process_Instances")
 5 public class ProcessInstanceDTO
 6     implements Persistable<Integer>
 7 
 8 {
 9     /** */
10     @Id
11     @GeneratedValue(strategy = GenerationType.AUTO, generator = "processinstance_seq_gen")
12     @SequenceGenerator(name = "processinstance_seq_gen", sequenceName = "Process_Instance_Seq")
13     @Column(name = "id")
14     private Integer pk;
15 
16 ...
17 
18     /**
19      * @return the pk
20      */
21     public Integer getPk()
22     {
23         return pk;
24     }
25 
26     /**
27      * @param pk the pk to set
28      */
29     public void setPk(Integer pk)
30     {
31         this.pk = pk;
32     }
33 
34 .... 
35 
36     public Integer getId()
37     {
38         return pk;
39     }
40 
41     public boolean isNew()
42     {
43         return pk == null;
44     }
45 }

Here is the full stack trace:

 1 java.lang.IllegalArgumentException: object is not an instance of declaring class
 2     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 3     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 4     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 5     at java.lang.reflect.Method.invoke(Method.java:585)
 6     at org.synyx.hades.dao.orm.GenericDaoFactory$FinderExecuterMethodInterceptor.invoke(GenericDaoFactory.java:402)
 7     at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
 8     at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
 9     at $Proxy92.findAllFooBar(Unknown Source)
10     at com.hrworx.formworx.dao.process.TestProcessInstanceDao.testFindAllByEntityAndProcessType(TestProcessInstanceDao.java:67)
11     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
12     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
13     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
14     at java.lang.reflect.Method.invoke(Method.java:585)
15     at org.springframework.test.context.junit4.SpringTestMethod.invoke(SpringTestMethod.java:160)
16     at org.springframework.test.context.junit4.SpringMethodRoadie.runTestMethod(SpringMethodRoadie.java:233)
17     at org.springframework.test.context.junit4.SpringMethodRoadie$RunBeforesThenTestThenAfters.run(SpringMethodRoadie.java:333)
18     at org.springframework.test.context.junit4.SpringMethodRoadie.runWithRepetitions(SpringMethodRoadie.java:217)
19     at org.springframework.test.context.junit4.SpringMethodRoadie.runTest(SpringMethodRoadie.java:197)
20     at org.springframework.test.context.junit4.SpringMethodRoadie.run(SpringMethodRoadie.java:143)
21     at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.invokeTestMethod(SpringJUnit4ClassRunner.java:160)
22     at org.junit.internal.runners.JUnit4ClassRunner.runMethods(JUnit4ClassRunner.java:51)
23     at org.junit.internal.runners.JUnit4ClassRunner$1.run(JUnit4ClassRunner.java:44)
24     at org.junit.internal.runners.ClassRoadie.runUnprotected(ClassRoadie.java:27)
25     at org.junit.internal.runners.ClassRoadie.runProtected(ClassRoadie.java:37)
26     at org.junit.internal.runners.JUnit4ClassRunner.run(JUnit4ClassRunner.java:42)
27     at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:97)
28     at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:45)
29     at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
30     at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
31     at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
32     at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
33     at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)