EJB 2.0 mapping to RAW data

Hi,
I am trying to map the RAW data in my database to attribute of Entity bean using CMP2.0.
Home class have the class
Collection findByParent(byte[] parentId) throws EJBException, RemoteException, FinderException;
ejb-jar.xml have
<query>
<query-method>
<method-name>findByParent</method-name>
<method-params>
<method-param>byte[]</method-param>
</method-params>
</query-method>
<ejb-ql>SELECT OBJECT(o) FROM product as o WHERE o.packageDetailId = ?1 </ejb-ql>
</query>
I am getting this error.
invalid query: In EJB com.cobaltgroup.services.productpackage.ejb.Product, for a query defined in the ejb-jar.xml file with a method signature, findByParent(byte[]), we failed to find a corresponding method in the remote home interface, local home interface, or bean class that matches this signature. Note that class parameters such as java.lang.String must be fully qualified, thus 'String' would not match 'java.lang.String'.
This bean was working in CMP EJB1.1 specification . but gives error in 2.0.
I will appreciate reply to this query.
Best Regards.

<method-params>
<method-param>[B</method-param>
</method-params>
use this. this will work

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