Is it possible to make DB-VA construct tables for each generalization of a pesistable class ??
For example, the project I am working on, I need to have three types of users; an admin user, an advisor user and a member user. Each one of these users has similar fields that are used throughout the application. Therefore, each one of the user classes should inherit certain fields from the parent. So I have a parent class called User, and the three child classes Member, Advisor and Admin extend User. In addition, User and Advisor refence a class named Address. Admins do not have addresses. When I have DB-VA generate my code and database I get this as my User.hbm.xml
<hibernate-mapping>
<class name="com.dba.orm.models.User" table="`User`" lazy="false" discriminator-value="User">
<id name="userId" column="`userId`" type="long" unsaved-value="0">
<generator class="native">
</generator>
</id>
<discriminator column="`Discriminator`" type="string"/>
<property name="userPassword" column="`userPassword`" type="string" not-null="false"/>
<property name="userEmail" column="`userEmail`" type="string" not-null="false"/>
<property name="firstName" column="`firstName`" type="string" not-null="false"/>
<property name="lastName" column="`lastName`" type="string" not-null="false"/>
<property name="active" column="`active`" type="boolean" not-null="false"/>
<property name="lastVisit" column="`lastVisit`" type="date" not-null="false"/>
<property name="dateAdded" column="`dateAdded`" type="date" not-null="false"/>
<subclass name="com.dba.orm.models.Admin" discriminator-value="ADMIN" lazy="false">
<property name="adminPerms" column="`adminPerms`" type="integer" not-null="false"/>
</subclass>
<subclass name="com.dba.orm.models.Advisor" discriminator-value="ADVISOR" lazy="false">
<property name="advisorType" column="`advisorType`" type="integer" not-null="false"/>
<property name="advisorFirmName" column="`advisorFirmName`" type="string" not-null="false"/>
<property name="advisorPosition" column="`advisorPosition`" type="string" not-null="false"/>
<property name="advisorPhoneWork" column="`advisorPhoneWork`" type="string" not-null="false"/>
<property name="advisorPhoneMobile" column="`advisorPhoneMobile`" type="string" not-null="false"/>
<property name="advisorLicenseNumber" column="`advisorLicenseNumber`" type="string" not-null="false"/>
</subclass>
<subclass name="com.dba.orm.models.Member" discriminator-value="MEMBER" lazy="false">
<property name="memberPhoneHome" column="`memberPhoneHome`" type="string" not-null="false"/>
<property name="memberPhoneMobile" column="`memberPhoneMobile`" type="string" not-null="false"/>
<property name="memberNumberVisits" column="`memberNumberVisits`" type="integer" not-null="false"/>
<property name="memberActivationCode" column="`memberActivationCode`" type="string" not-null="false"/>
</subclass>
</class>
</hibernate-mapping>
and a DDL that looks like:
create table `User` (`userId` bigint not null auto_increment, `userPassword` varchar(255), `userEmail` varchar(255), `firstName`
varchar(255), `lastName` varchar(255), `active` tinyint(1), `lastVisit`
date, `dateAdded` date, `Discriminator` varchar(255) not null,
`memberPhoneHome` varchar(255), `memberPhoneMobile` varchar(255),
`memberNumberVisits` int, `memberActivationCode` varchar(255),
`adminPerms` int, `advisorType` int, `advisorFirmName` varchar(255),
`advisorPosition` varchar(255), `advisorPhoneWork` varchar(255),
`advisorPhoneMobile` varchar(255), `advisorLicenseNumber`
varchar(255), primary key (`userId`)) type=InnoDB
That is a hideously large table that doesn’t allow me to normalize any of my data. In addition there are no references to my Address class anymore. I knw hibernate can persist polymorhic sub classes to a separate table using join tables. Is it possible to tell DB-VA to do this ?? Not having this feature seems to be a fairly serious shortcoming.
