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Exception when querying Map property with @embedded & Enhancer enabled

#1

Hi,

I have the following test class that is failing when the enhancer is enabled, resulting in the error 'Failed to write the value of field field TestEmbeddableMap$MyAttributeItem.id using enhanced method.', if I disable the enhancement the test works as expected, and returns the expected MyEntity2

Thanks

 

import java.util.LinkedHashMap;

import javax.persistence.Embeddable;
import javax.persistence.Entity;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Persistence;

public class TestEmbeddableMap {
public static void main(String[] args) {
  EntityManagerFactory emf =
    Persistence.createEntityManagerFactory(
      "objectdb:$objectdb/db/test_embed.tmp;drop");
  EntityManager em = emf.createEntityManager();
 
  em.getTransaction().begin();

  MyEntity2 entity = new MyEntity2("entity1");
  entity.put("key1", new MyAttributeItem("id1", "name1", "value1"));
  entity.put("key2", new MyAttributeItem("id2", "name2", "value2"));
  entity.put("key3", new MyAttributeItem("id3", "name3", "value3"));
  em.persist(entity);
 
  MyEntity2 entity2 = new MyEntity2("entity2");
  entity2.put("key1", new MyAttributeItem("id1", "name1", "value4"));
  entity2.put("key2", new MyAttributeItem("id2", "name2", "value5"));
  entity2.put("key3", new MyAttributeItem("id3", "name3", "value6"));
  em.persist(entity2);
 
        em.getTransaction().commit();
        
       
        System.out.println("In Query");
        for (MyEntity2 myEntity : em.createQuery("select e from MyEntity2 e", MyEntity2.class).getResultList()) {
   System.out.println(myEntity);
  }
       
       
        System.out.println("Queries on attributes, should return entity1");
        for (MyEntity2 myEntity2 : em.createQuery("select from MyEntity2 e where e.values.get('key1').value = 'value1'", MyEntity2.class).getResultList()) {
   System.out.println(myEntity2);
  }
}

@Entity
public static class MyEntity2 {
  private String name;
 
  private LinkedHashMap<String, MyAttributeItem> values = new LinkedHashMap<>();

  public MyEntity2(String name) {
   super();
   this.name = name;
  }

  public MyAttributeItem get(Object key) {
   return values.get(key);
  }

  public MyAttributeItem put(String key, MyAttributeItem value) {
   return values.put(key, value);
  }

  @Override
  public String toString() {
   return "MyEntity2 [name=" + name + ", values=" + values + "]";
  }
}

@Embeddable
public static class MyAttributeItem {
  private String id;
  private String name;
  private String value;
 
  public MyAttributeItem(String id, String name, String value) {
   super();
   this.id = id;
   this.name = name;
   this.value = value;
  }
  @Override
  public String toString() {
   return "MyAttributeItem [id=" + id + ", name=" + name + ", value=" + value + "]";
  }

}
}

 

 

 

Exception in thread "main" [ObjectDB 2.6.4_03] javax.persistence.PersistenceException
Failed to write the value of field field TestEmbeddableMap$MyAttributeItem.id using enhanced method (error 362)
at com.objectdb.jpa.JpaQuery.getResultList(JpaQuery.java:725)
at TestEmbeddableMap.main(TestEmbeddableMap.java:40)
Caused by: com.objectdb.o.UserException: Failed to write the value of field field TestEmbeddableMap$MyAttributeItem.id using enhanced method
at com.objectdb.o.MSG.d(MSG.java:75)
at com.objectdb.o.UMR.P(UMR.java:932)
at com.objectdb.o.UMR.z(UMR.java:574)
at com.objectdb.o.UML.u(UML.java:537)
at com.objectdb.o.REG.y(REG.java:266)
at com.objectdb.o.QUN.E(QUN.java:452)
at com.objectdb.o.CLN$aA.T(CLN.java:456)
at com.objectdb.o.PTN.T(PTN.java:503)
at com.objectdb.o.PTN.T(PTN.java:481)
at com.objectdb.o.PTN.T(PTN.java:481)
at com.objectdb.o.QUN.UB(QUN.java:686)
at com.objectdb.o.BCN.o(BCN.java:311)
at com.objectdb.o.BCN.Vd(BCN.java:264)
at com.objectdb.o.PBI.C(PBI.java:146)
at com.objectdb.o.PBI.q(PBI.java:115)
at com.objectdb.o.OBI.VA(OBI.java:244)
at com.objectdb.o.BQI.VK(BQI.java:151)
at com.objectdb.o.PRG.ai(PRG.java:782)
at com.objectdb.o.PRG.ag(PRG.java:711)
at com.objectdb.o.PRG.af(PRG.java:553)
at com.objectdb.o.QRM.Vm(QRM.java:286)
at com.objectdb.o.MST.Vm(MST.java:988)
at com.objectdb.o.WRA.Vm(WRA.java:311)
at com.objectdb.o.WSM.Vm(WSM.java:115)
at com.objectdb.o.QRR.g(QRR.java:247)
at com.objectdb.o.QRR.f(QRR.java:153)
at com.objectdb.jpa.JpaQuery.getResultList(JpaQuery.java:716)
... 1 more
Caused by: java.lang.IllegalArgumentException
at TestEmbeddableMap$MyAttributeItem.__odbWriteMember(TestEmbeddableMap.java:1)
at com.objectdb.o.UMR.A(UMR.java:587)
at com.objectdb.o.UMR.z(UMR.java:571)
... 25 more

 

 

#2

As a workaround this does work with the MyAttributeItem defined as an entity

#3

Thank you for this test case that demonstrates an unexpected limitation of enhanced embeddable classes in queries. Please try build 2.6.4_06 that should fix this issue.

ObjectDB Support
ObjectDB - Fast Object Database for Java (JPA/JDO)

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