Kodo.jdbc.AutoIncrementConstraints doesn't seem to do anything

Question

I have an app_user table and related entity with an auto-increment
primary key (on MySQL), and a user_role table and related entity with a
FK pointing to the user PK. Both entities are using application
identity. The problem is that the user_role record is written out with a
null value for the FK pointing to the app_user table.
I've set
kodo.jdbc.AutoIncrementConstraints: true
both in the kodo.properties file used for enhancing, and in the
properties use for runtime user (which are fed to JDBCConfigurationImpl
via the fromProperties() method). However, the flag simply seems to do
nothing whether it's set or not...
The user is first created, then the role is added, then either calling
makePersistent or attachCopy has exactly the same effect, the user and
the role are written out, but the role has a null fk... Right now
there's no not-null constraint on the fk, but I believe it would be
triggered if ti existed.
Can anybody confirm that this should work ok?
package.jdo:
<class name="User" objectid-class="com.xxx.dexter.slice.dao.id.UserId">
<extension vendor-name="kodo" key="detachable" value="true"/>
<field name="id" primary-key="true">
</field>
<field name="roles">
<collection element-type="UserRole"/>
<!-- delete all userroles when the user is deleted -->
<extension vendor-name="kodo" key="element-dependent"
value="true"/>
<!-- specify the field that owns this two-sided relation -->
<extension vendor-name="kodo" key="inverse-owner" value="user"/>
</field>
</class>
<class name="UserRole"
objectid-class="com.xxx.dexter.slice.dao.id.UserRoleId">
<extension vendor-name="kodo" key="detachable" value="true"/>
<field name="id" primary-key="true">
</field>
<field name="user">
</field>
</class>
package.mapping:
<class name="User">
<jdbc-class-map type="base" table="app_user"/>
<field name="id" primary-key="true">
<jdbc-field-map type="value" column="user_id"/>
</field>
<field name="roles">
<jdbc-field-map type="one-many" table="user_role"
ref-column.user_id="user_id"/>
</field>
</class>
<class name="UserRole">
<jdbc-class-map type="base" table="user_role"/>
<field name="id" primary-key="true">
<jdbc-field-map type="value" column="id"/>
</field>
<field name="user">
<jdbc-field-map type="one-one" column.user_id="user_id"/>
</field>
</class>
Regards,
Colin

Answer 1

Please ignore the message below. While I was properly using the
jdbc-auto-increment vendor extension for some other tables, it was
somehow left out on these two. Adding it resolved the problem.
Colin Sampaleanu wrote:
I have an app_user table and related entity with an auto-increment
primary key (on MySQL), and a user_role table and related entity with a
FK pointing to the user PK. Both entities are using application
identity. The problem is that the user_role record is written out with a
null value for the FK pointing to the app_user table.
I've set
kodo.jdbc.AutoIncrementConstraints: true
both in the kodo.properties file used for enhancing, and in the
properties use for runtime user (which are fed to JDBCConfigurationImpl
via the fromProperties() method). However, the flag simply seems to do
nothing whether it's set or not...
The user is first created, then the role is added, then either calling
makePersistent or attachCopy has exactly the same effect, the user and
the role are written out, but the role has a null fk... Right now
there's no not-null constraint on the fk, but I believe it would be
triggered if ti existed.
Can anybody confirm that this should work ok?
package.jdo:
<class name="User" objectid-class="com.xxx.dexter.slice.dao.id.UserId">
<extension vendor-name="kodo" key="detachable" value="true"/>
<field name="id" primary-key="true">
</field>
<field name="roles">
<collection element-type="UserRole"/>
<!-- delete all userroles when the user is deleted -->
<extension vendor-name="kodo" key="element-dependent"
value="true"/>
<!-- specify the field that owns this two-sided relation -->
<extension vendor-name="kodo" key="inverse-owner" value="user"/>
</field>
</class>
<class name="UserRole"
objectid-class="com.xxx.dexter.slice.dao.id.UserRoleId">
<extension vendor-name="kodo" key="detachable" value="true"/>
<field name="id" primary-key="true">
</field>
<field name="user">
</field>
</class>
package.mapping:
<class name="User">
<jdbc-class-map type="base" table="app_user"/>
<field name="id" primary-key="true">
<jdbc-field-map type="value" column="user_id"/>
</field>
<field name="roles">
<jdbc-field-map type="one-many" table="user_role"
ref-column.user_id="user_id"/>
</field>
</class>
<class name="UserRole">
<jdbc-class-map type="base" table="user_role"/>
<field name="id" primary-key="true">
<jdbc-field-map type="value" column="id"/>
</field>
<field name="user">
<jdbc-field-map type="one-one" column.user_id="user_id"/>
</field>
</class>
Regards,
Colin