Hibernate TransientPropertyValueException When saving data

Question

I am trying to insert data to the DB using hibernate . Here is how I going perform that action

    session.beginTransaction();
    pojo.StuDetails stu = new         


        

Answer 1

In your SubjectHasStuDetials.hbm.xml make these changes :

<many-to-one name="stuDetails" class="pojo.StuDetails" fetch="select" cascade="all">
            <column name="stu_details_id" not-null="true" />
        </many-to-one>
<many-to-one name="subject" class="pojo.Subject" fetch="select" cascade="all" >
            <column name="subject_id" not-null="true" />
        </many-to-one>

Add cascade="all" attribute to both stuDetails and subject many-to-one tags.

• Cascade attribute is mandatory, when ever we apply relationship between objects, cascade attribute transfers operations done on one object onto its related child objects
• If we write cascade = “all” then changes at parent class object will be effected to child class object too, if we write cascade = “all” then all operations like insert, delete, update at parent object will be effected to child object also.
• Example: if we apply insert(or update or delete) operation on parent class object, then child class objects will also be stored into the database.