Hi,

I would like to generate JPA from hbm files describing abstract classes. Everything is fine, except that hbm2java does not generate the annotation @Inheritance(strategy = InheritanceType.JOINED) when using joined-subclass: I have to add it manually and everything works. I tried using: <meta attribute="class-inheritance-type">single-table-per-class-hierarchy</meta> but that does not do a thing!

What meta attribute(s) will I need to set to generate @Inheritance(strategy = InheritanceType.JOINED)?

Here is my hbm file:

<hibernate-mapping package="gov.gsa.fas.offer.v1.persistence">
<class abstract="true"
name="gov.gsa.fas.offer.v1.persistence.SolicitationGoodsAndServices"
proxy="gov.gsa.fas.offer.v1.persistence.SolicitationGoodsAndServices" table="TB_GOODS_SERVICES">
<meta attribute="class-inheritance-type">single-table-per-class-hierarchy</meta>
<id column="gsId" name="id" type="long">
<generator class="native"/>
</id>
<bag cascade="all-delete-orphan" inverse="true" lazy="true" name="childldrenSols">
<key column="pgsId"/>
<one-to-many class="gov.gsa.fas.offer.v1.persistence.SolicitationGoodsAndServices"/>
</bag>
<many-to-one
class="gov.gsa.fas.offer.v1.persistence.SolicitationGoodsAndServices" name="parentSol">
<column name="pgsId"/>
</many-to-one>

<joined-subclass
extends="gov.gsa.fas.offer.v1.persistence.SolicitationGoodsAndServices"
name="gov.gsa.fas.offer.v1.persistence.SolicitationGroup" table="TB_GROUP">
<key column="gsId"/>
<property column="grp_name" generated="never" lazy="false"
name="name" type="string"/>
<property column="grp_order" generated="never" lazy="false"
name="order" type="integer"/>
</joined-subclass>
<joined-subclass
extends="gov.gsa.fas.offer.v1.persistence.SolicitationGoodsAndServices"
name="gov.gsa.fas.offer.v1.persistence.SolicitationLineItem">
<key column="gsId"/>
<joined-subclass
extends="gov.gsa.fas.offer.v1.persistence.SolicitationLineItem"
name="gov.gsa.fas.offer.v1.persistence.SIN" table="TB_SIN">
<key column="gsId"/>
<property column="sin_number" generated="never" lazy="false"
name="number" type="string"/>
<property column="sin_title" generated="never" lazy="false"
name="title" type="string"/>
name="status" type="string"/>
</joined-subclass>
<joined-subclass
extends="gov.gsa.fas.offer.v1.persistence.SolicitationLineItem"
name="gov.gsa.fas.offer.v1.persistence.NSN" table="TB_NSN">
<key column="gsId"/>
<property column="nsn_number" generated="never" lazy="false"
name="number" type="string"/>
<property column="nsn_group" generated="never" lazy="false" name="group" type="string"/>
<property column="nsn_title" generated="never" lazy="false" name="title" type="string"/>
<property column="nsn_description" generated="never" lazy="false"
</joined-subclass>
</joined-subclass>
</class>
</hibernate-mapping>

This code generate exactly what I want minus the @Inheritance (commented)

@Entity
@Table(name="TB_GOODS_SERVICES")
//@Inheritance(strategy = InheritanceType.JOINED) - this should also be generated by hbm2java
public class CopyOfSolicitationGoodsAndServices implements java.io.Serializable {
private long id;
private Collection<CopyOfSolicitationGoodsAndServices> childldrenSols = new ArrayList<CopyOfSolicitationGoodsAndServices>(0);
private CopyOfSolicitationGoodsAndServices parentSol;
....

@Entity
@Table(name="SolicitationLineItem")
//@Inheritance(strategy=InheritanceType.JOINED) - this should also be generated by hbm2java
public class CopyOfSolicitationLineItem extends gov.gsa.fas.offer.v1.persistence.SolicitationGoodsAndServices implements java.io.Serializable {
public CopyOfSolicitationLineItem() {
}

public CopyOfSolicitationLineItem(Collection<SolicitationGoodsAndServices> childldrenSols, SolicitationGoodsAndServices parentSol) {
super(childldrenSols, parentSol);
}

Cheers, JP

BTW. Your mapping file has errors because joined-subclass can't be enclosed into another joined-subclass.
Use the following meta attributes:
<meta attribute="extra-import">javax.persistence.Inheritance</meta>
<meta attribute="class-modifier">@Inheritance(strategy = InheritanceType.JOINED) public</meta>

>BTW. Your mapping file has errors because joined-subclass can't be enclosed into another joined-subclass.
I was mistaken, it just has '<' and '/>' lost characters.

looks like bug in our generation.

Sorry I tried to do the same today using hibernate-tools with ant; the jars are for hibernate-tools 3.40, copied from the eclipse indigo plugin (JBoss tools) from the directory names ...org.hibernate.eclipse.libs_3.4.0.v20120307-2104-H60-Beta1/xxxx

I still get no annotation @Inheritance, was there any progress on that ? Am I taking wrong version of the tool ?

Thanks in advance
Andrea