I have an entity with an embedded key. The entity has only the key as a field and the key has 7 fields, some of which can be null.

When I run the following query:

```
Criteria criteria = session.createCriteria(getPersistentClass());
criteria.add(Restrictions.eq("id.profPropertyId", profileExtensionName));
Object obj = criteria.list();
log.info(obj);
return (List<ProfileExtensions>) obj; 

```

I get the correct number of results, but each result is null (i.e. I get a list of 4000 null objects). I have tried using both a HQL query and criteria but they both give the same result.

The mapping classes were generated from an existing database.

The SQL generated for the query is as follows

```
select this_.PROF_DATA_TYPE as PROF1_14_0_, this_.PROF_EXT_KEY as PROF2_14_0_, 
       this_.PROF_KEY as PROF3_14_0_, this_.PROF_NAME as PROF4_14_0_, 
       this_.PROF_PROPERTY_ID as PROF5_14_0_, this_.PROF_VALUE as PROF6_14_0_, 
       this_.PROF_VALUE_EXTENDED as PROF7_14_0_ 
from EMPINST.PROFILE_EXTENSIONS this_ 
where this_.PROF_PROPERTY_ID=?

```

Looks like it should return the correct data.

The mapping file is pretty simple (and generated from the schema:

```
// Generated Oct 18, 2010 11:08:08 PM by Hibernate Tools 3.2.2.GA
import javax.persistence.AttributeOverride;
import javax.persistence.AttributeOverrides;
import javax.persistence.Column;
import javax.persistence.EmbeddedId;
import javax.persistence.Entity;
import javax.persistence.Table;
import javax.persistence.UniqueConstraint;

@Entity
@Table(name="PROFILE_EXTENSIONS"
    ,schema="EMPINST"
    , uniqueConstraints = @UniqueConstraint(columnNames={"PROF_KEY", "PROF_PROPERTY_ID"}) )
public class ProfileExtensions  implements java.io.Serializable {

 private ProfileExtensionsId id;

public ProfileExtensions() {
}

public ProfileExtensions(ProfileExtensionsId id) {
   this.id = id;
}

 @EmbeddedId

@AttributeOverrides( {
    @AttributeOverride(name="profKey", column=@Column(name="PROF_KEY", nullable=false, length=36) ), 
    @AttributeOverride(name="profPropertyId", column=@Column(name="PROF_PROPERTY_ID", nullable=false, length=64) ), 
    @AttributeOverride(name="profExtKey", column=@Column(name="PROF_EXT_KEY", length=256) ), 
    @AttributeOverride(name="profName", column=@Column(name="PROF_NAME", length=256) ), 
    @AttributeOverride(name="profDataType", column=@Column(name="PROF_DATA_TYPE", length=64) ), 
    @AttributeOverride(name="profValue", column=@Column(name="PROF_VALUE", length=1024) ), 
    @AttributeOverride(name="profValueExtended", column=@Column(name="PROF_VALUE_EXTENDED") ) } )
  public ProfileExtensionsId getId() {
    return this.id;
  }

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

```