How to map 1 table to multiple classes?

maryW. · **Joined:** Fri Feb 17, 2012 10:19 am **Posts:** 2

I have a table named Person. Mapped class looks something like this:

Code:

public class Person implements java.io.Serializable {
    private Integer personId;
    private String name;
    private Long age;
    private byte[] photo;
    //getters setters omitted

How to move

Code:

byte[] photo

to a separate class that has 1-to-1 association with Person. I want to do this so i could lazy load blob on demand (my db doesn't support lazy loading properties).

currently i have:
Person class hbm:

Code:

<one-to-one class="Photo" name="photo" constrained="true" fetch="select" />

Photo:

Code:

<class name="Photo" table="PERSON" polymorphism="explicit">
    
    <id name="photoId" type="int">
      <column length="200" name="PersonID"/>  
      <generator class="increment"/>
    </id>
  
    <property name="blob" type="byte[]">
      <column name="Photo" not-null="false"/>
    </property>

I can select existing Person records with this, but i cant insert new - Photo value is null in db. Please give some advice.

maryW. · **Joined:** Fri Feb 17, 2012 10:19 am **Posts:** 2

Anyone?

xiaotuanzi · **Joined:** Tue Feb 21, 2012 12:57 am **Posts:** 5

That's right?