hbm2java Initializing attribute in generated POJO

chent · **Joined:** Wed Jul 29, 2009 11:50 pm **Posts:** 1

I'm using Hibernate Tools 3.2.4.GA to reverse engineer from a MySQL 5.1 database via Ant.

I would like to initialize the employee attribute in the generated POJO:

Code:

@Entity
@Table(name="user"
    ,catalog="testdb"
)
public class User  implements java.io.Serializable {

     private Employee employee;
     private String userName;
...

To something like:

Code:

private Employee = new Employee();

I have added the classes folder to the tools classpath but it still doesn't work.

User.hbm.xml:

Code:

...
<hibernate-mapping>
    <class name="org.app.model.User" table="user" catalog="testdb">
        <id name="id" type="string">
            <column name="emp_id" length="20" />
            <generator class="foreign">
                <param name="property">employee</param>
            </generator>
        </id>
        <one-to-one name="employee" class="org.app.model.Employee" constrained="true"></one-to-one>
        <property name="userName" type="string">
            <column name="usr_userName" length="45" not-null="true" />
        </property>
...

max · **Posted:** Sun Aug 02, 2009 10:18 am

chent wrote:

I'm using Hibernate Tools 3.2.4.GA to reverse engineer from a MySQL 5.1 database via Ant.

I would like to initialize the employee attribute in the generated POJO:

Code:

@Entity
@Table(name="user"
    ,catalog="testdb"
)
public class User  implements java.io.Serializable {

     private Employee employee;
     private String userName;
...

To something like:

Code:

private Employee = new Employee();

I have added the classes folder to the tools classpath but it still doesn't work.

Why should that matter ?

Anyway here is how to do it:

Quote:

User.hbm.xml:

Code:

...
<hibernate-mapping>
    <class name="org.app.model.User" table="user" catalog="testdb">
        <id name="id" type="string">
            <column name="emp_id" length="20" />
            <generator class="foreign">
                <param name="property">employee</param>
            </generator>
        </id>
        <one-to-one name="employee" class="org.app.model.Employee" constrained="true">
          <meta attribute="default-value">new Employee()</meta>
       </one-to-one>
        <property name="userName" type="string">
            <column name="usr_userName" length="45" not-null="true" />
        </property>
...

Notice the meta attribue line.