I have a problem making a mapping association between two classes, in hibernate 3.0

The fisrt one is like

public class ClassA implements Serializable {

private long id;
private String name;


public ClassA() {}

public long getId() {
return id;
}

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

public String getName() {
return name;
}

public void setName(String name) {
this.name = name;
}
}

With a mapping file:

<hibernate-mapping>
<class name="com.ourcompany.ourproyect.ClassA" table="EntityA">
<id name="id" column="A_Id">
<generator class="increment"/>
</id>
<property name="name" type="string" column="A_name"/>
</class>
</hibernate-mapping>

And my second class is like:

public class ClassB implements Serializable {

private long id;
private String name;
private ClassA a;


public ClassB() {}

public long getId() {
return id;
}

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

public String getName() {
return name;
}

public void setB(String name) {
this.name = name;
}

public ClassA getA() {
return a;
}

public void setA(ClassA a) {
this.a = a;
}
}

With a mapping file:

<hibernate-mapping>
<class name="com.ourcompany.ourproyect.ClassB" table="EntityB">
<id name="id" column="B_Id">
<generator class="increment"/>
</id>
<many-to-one name="a" column="A_Id" class="ClassA"/>
</class>
</hibernate-mapping>

I'm creating two tables to map these classes:

CREATE TABLE "EntityA"
(
"A_Id" int8 NOT NULL,
"A_Name" varchar(20),
CONSTRAINT pka PRIMARY KEY ("A_Id")
)

And,

CREATE TABLE "EntidadB"
(
"B_Id" int8 NOT NULL,
"B_Name" varchar(20),
"A_Id" int8 NOT NULL,
CONSTRAINT pkb PRIMARY KEY ("B_Id"),
CONSTRAINT fka FOREIGN KEY ("A_Id")
REFERENCES "EntityA" ("A_Id") MATCH SIMPLE
ON UPDATE RESTRICT ON DELETE RESTRICT
)

...In a PostgreSQL 8.1 database.

I'm building a .har and deploying it in JBoss 4.0.3, but the console dump me the follow error:

--- MBeans waiting for other MBeans ---
ObjectName: com.protantalo.prueba:name=ControlPagosSessionFactory
State: FAILED
Reason: org.hibernate.MappingException: An association from the table EntidadB refers to an unmapped class: ClassA

--- MBEANS THAT ARE THE ROOT CAUSE OF THE PROBLEM ---
ObjectName: com.protantalo.prueba:name=ControlPagosSessionFactory
State: FAILED
Reason: org.hibernate.MappingException: An association from the table EntityB refers to an unmapped class: ClassA


What am I doing wrong???

Thank you very much for any help...

Long shot but... Not sure what DB you're using there but has table EntityA been created properly?

divo

But, the strange thing is that when I use POJO, (without composition between classes) the MBean rise without problems...

On the mapping you state:
<class name="com.ourcompany.ourproyect.ClassB" table="EntityB">

but in the script you name:
CREATE TABLE "EntidadB"

Any way, why don't you try ddl2hbm from the hibernat tools?

Emilio

Thanks... i found the problem... I was forgetting the package attribute in the hibernate-mapping element....

sorry