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Hibernate not picking values from PK

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Hello World,
I am new to Hibernate. I have created composite primary key like
<composite-id name="applicationPK" class="com.test.alert.ApplicationPK" >
<key-property name="alert_id" column="ALERT_ID" type="int" />
<key-property name="cn" column="CN" type="int" />
</composite-id >

And my Primary Key class like

public class ApplicationPK implements Serializable {
private int alertId;
private int cn;
//getter setter for above fields.

And POJO class looks like this –

public class AlertUserVO {
private int alertId;
private int cn;
private String status;
private ApplicationPK compositePK;

// getter setter of above fields.

And in my test class I have following code for inserting record –

//Hibernate code for getting session, transaction etc.
AlertUserVO obj = new AlertUserVO();
ApplicationPK compositePK = new ApplicationPK();


The problem here is it’s always setting values for alert_id and cn as zero.
But if instead I use following code it sets values properly –


Why it is picking up the values from POJO class instead of PK class.
Is there any way to take the values from PK class?

Please help me.
Don't get me started about those stupid light bulbs.
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