Question

I have simple hibernate mapping

      <class name="com.domain.OtherAccount" table="ACCOUNT">
          <composite-id >
            <key-property name="acctype" column="acctype" type="java.lang.Character"></key-property>
            <key-property name="accnum" column="accnum" type="java.lang.Integer"></key-property>
          </composite-id>
         <property name="accholder"></property>
      </class>

I do not want to create separate class for Composite Key. So, acctype and accnum are part of OtherAccount class only. Class implements serializable interface and hashCode() and equals() methods.

I am able to create new object and persist it using, session.save().
But how can I retrieve existing object ? In session.get() method how to specify composite key ?

  In session.get(OtherAccount.class, HOW TO SPECIFY COMPOSITE KEY HERE )

Answer 1

Create an instance of OtherAccount and set just those two fields. Hibernate doesn’t care that the instance has more fields than it needs.