Hibernate version: 3.2.5.ga

Mapping documents: At the office...

Hi all!

I am realtive new in to Hibernate, but after researching I have not found any answer about this:

I have this classes:

Class A {
public Set Children

public Set getChildren()...
public setChildren(Set children)...
}

Class B {
public A Parent

public A getParent()...
public setParent(A parent)...
}


then in my code I have something like this:

...
A myAInstance = new A();
...
session.Save(A);
...
B myBInstance = new B();
myBInstance.setParent(A);
session.Save(B);
...

And my question is:

There is some way or workaround, using Interceptors, events etc etc to be notified/intercept that one object from B has been added to A?


The only workaround that I have found is, implement event listener (delete, update and insert) and via reflection inspect the class that is going to be affected, searching for "parents"... really nasty code.

Thanks,

PD: Sorry, my english is not good :-(

Regards from Mallorca.

Here are the maping files:

Family (Parent):

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="common.persistence">
<class
name="MaterialFamily"
table="MATERIAL_FAMILies"
lazy="false"
>
<id
name="Id"
column="MATERIAL_FAMILY_ID"
type="long"
access="wildsoftware.utils.Hibernate.DirectSetAccessor">
<generator class="increment"/>
</id>


<property
name="Name"
type="string"
column="NAME"
length="255"
not-null="true"
access="wildsoftware.utils.Hibernate.DirectSetAccessor"
/>

<!-- Limit item description to 4000 characters, Oracle. -->
<property
name="Description"
column="DESCRIPTION"
type="string"
length="4000"
not-null="false"
access="wildsoftware.utils.Hibernate.DirectSetAccessor"
/>

<set name="Materials"
inverse="false"
cascade="all"
lazy="false">
<key column="MATERIAL_FAMILY_ID"/>
<one-to-many class="Material"/>
</set>

</class>
</hibernate-mapping>



Material (Child):


<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="common.persistence">
<class
name="Material"
table="MATERIAL"
lazy="false"
>
<id
name="Id"
column="MATERIAL_ID"
type="long"
access="wildsoftware.utils.Hibernate.DirectSetAccessor">
<generator class="increment"/>
</id>

<property
name="Name"
type="string"
column="NAME"
length="255"
not-null="true"
access="wildsoftware.utils.Hibernate.DirectSetAccessor"
/>

<!-- Limit item description to 4000 characters, Oracle. -->
<property
name="Description"
column="DESCRIPTION"
type="string"
length="4000"
not-null="false"
access="wildsoftware.utils.Hibernate.DirectSetAccessor"
/>

<many-to-one name="FromFamily"
class="MaterialFamily"
not-null="true"
column="FAMILY_ID"
/>

<many-to-one name="Unit"
class="UnitType"
not-null="false"
column="UNIT_TYPE_ID"
/>

</class>
</hibernate-mapping>


Thank you!