I would greatly appreciate it if someone could point me to an example of a uni-directional many-to-many association (uses link table) that is confirmed (read tested) to work with hibernate 3.1.

I have been unable to come up with an example where my link table is updated. The two tables I am joining get updated just not the link table.

I have a few books that give examples (Pro Hibernate 3) but I cannot even get them to work.

I am using Hibernate 3.1, MySQL, and JBOSS 4.0.4. My IDE is MyEclipseIDE 5.1.1GA.

Thanks,
Pneu

try something like this:

mapping for class Publisher:

<set name="authors" table="PUBLISHER_AUTHOR" cascade="all">
<key column = "PUBLISHER_ID" />
<many-to-many column="AUTHOR_ID"
unique="true"
class="Author"/>
</set>

there is no corresponding entry in the mapping for class Author, as is is unidirectional.

For the future, note if you want to get help here you are expected to give all your relevant mappings and code in your postings.
Good luck

Thanks for reply. Here are my mapping files. I've supplied them before but never got any responses so I'm posting them again based on the feedback in the previous message. Given this mapping, no rows get inserted into my link_customer_address table when I insert a Customer that has an Address. The customer and address tables are populated with a single row each.

Here is the mapping for my customer table (customer.hbm.xml)

FYI...the link_customer_address table defines two columns,
customer_id
address_id

the primary key is a composite of the two columns and I've defined two FK relationships back to each of the respective related tables (customer, address).

<hibernate-mapping>
<class name="com.receptrix.hibernate.Customer" table="customer" catalog="reservation">
<id name="id" type="java.lang.Long">
<column name="id" />
<generator class="native" />
</id>
<property name="lastName" type="java.lang.String">
<column name="last_name" length="50" not-null="true" />
</property>
<property name="firstName" type="java.lang.String">
<column name="first_name" length="50" not-null="true" />
</property>
<property name="middleInitial" type="java.lang.String">
<column name="middle_initial" length="1" />
</property>
<property name="suffix" type="java.lang.String">
<column name="suffix" length="5" />
</property>
<property name="phone" type="java.lang.String">
<column name="phone" length="13" />
</property>
<property name="phoneType" type="java.lang.String">
<column name="phone_type" length="10" />
</property>
<property name="emailAddress" type="java.lang.String">
<column name="email_address" length="100"/>
</property>
<set name="addresses" table="link_customer_address" cascade="save-update">
<key column="customer_id"/>
<many-to-many class="com.receptrix.hibernate.Address" column="address_id"/>
</set>
</class>
</hibernate-mapping>

****** address table mapping **********
<hibernate-mapping>
<class name="com.receptrix.hibernate.Address" table="address" catalog="reservation">
<id name="id" type="java.lang.Long">
<column name="id" />
<generator class="native" />
</id>
<property name="addressLine1" type="java.lang.String">
<column name="address_line_1" length="100" not-null="true" />
</property>
<property name="addressLine2" type="java.lang.String">
<column name="address_line_2" length="100" />
</property>
<property name="city" type="java.lang.String">
<column name="city" length="50" not-null="true" />
</property>
<property name="stateProvince" type="java.lang.String">
<column name="state_province" length="50" not-null="true" />
</property>
<property name="countryCode" type="java.lang.String">
<column name="country_code" length="2" not-null="true" />
</property>
<property name="zipCode" type="java.lang.String">
<column name="zip_code" length="5" not-null="true" />
</property>
<property name="zipExtension" type="java.lang.String">
<column name="zip_extension" length="4" />
</property>
</class>
</hibernate-mapping>

Regards,
J.D.