I have this XML mappings:

<hibernate-mapping>
<class entity-name="COLOR" table="COLOR">
<id name="id" type="string" column="id" length="6" />
<property name="position" column="position" not-null="true"
type="short" />
</class>
<class entity-name="OPCUATRO" table="OPCUATRO" dynamic-insert="true"
dynamic-update="true">
<id name="id" type="string" column="id"><generator class="uuid" /></id>
<property name="d1" column="d1" type="string" unique="false" length="30" />
<set name="d3" table="OPCUATRO_d3" fetch="subselect" lazy="false">
<key column="opcuatro_id" />
<many-to-many column="color_id" class="COLOR" lazy="false" fetch="join" />
</set>
</class>
</hibernate-mapping>

When I execute this HQL: "from OPCUATRO" I get the results as in the following example (only one row from the result set is shown):

{id=4028809621a302170121a31ac13c0001, d1=1, d3=[{position=0, id=red, $type$=COLOR}, {position=1, id=blue, $type$=COLOR}], $type$=OPCUATRO}

As you can see, d3 is presented as a Set of entities from the class COLOR (I'm using Map entity mode, not POJOs)

The problem is that when I try to fetch only d1 and d3 with HQL:

"select d1, d3 from OPCUATRO"
I get a SQLGrammarException

If I do:

"select id,d1, elements(d3) from OPCUATRO"
I get
4028809621a302170121a31ac13c0001 1 {position=1, id=blue, $type$=COLOR}
4028809621a302170121a31ac13c0001 1 {position=0, id=red, $type$=COLOR}

What I would like to get is something like:
4028809621a302170121a31ac13c0001 1 [{position=0, id=red, $type$=COLOR}, {position=1, id=blue, $type$=COLOR}]

I mean, I don't know if I am able, via HQL or Criteria, to get d3 as a Set of entities, instead of the cartesian product.

Any help with this would be greatly appreciated.