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From "Radu B (JIRA)" <j...@apache.org>
Subject [jira] Closed: (OPENJPA-1775) Get original object state for audit purpose
Date Fri, 27 Aug 2010 10:26:53 GMT

     [ https://issues.apache.org/jira/browse/OPENJPA-1775?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Radu B closed OPENJPA-1775.
---------------------------

    Resolution: Not A Problem

Question posted on OpenJPA user and dev forum

> Get original object state for audit purpose
> -------------------------------------------
>
>                 Key: OPENJPA-1775
>                 URL: https://issues.apache.org/jira/browse/OPENJPA-1775
>             Project: OpenJPA
>          Issue Type: Question
>          Components: Enhance, kernel
>    Affects Versions: 2.0.0
>         Environment: GlassFish 3, OpenJpa 2.0
>            Reporter: Radu B
>
> I need to get original object state before a merge() is called.
> I tried in my service edit() method, by using :
>     public void edit(Customer customer) {
>         Customer initialState = null;
>         log.info("About to update customer id " + customer.getCustomerId() + " with name
" + customer.getName());
>         PersistenceCapable currentState = (PersistenceCapable)customer;
>         try {
>             StateManagerImpl sm = (StateManagerImpl)currentState.pcGetStateManager();
>             SaveFieldManager sfm = sm.getSaveFieldManager();
>             PersistenceCapable oldState = sfm.getState();
>             initialState = (Customer)oldState;
>             log.info("Customer id " + customer.getCustomerId() + " OLD NAME WAS " + initialState.getName());
>         }
>         catch (Exception e) {
>             log.severe("Failed to get old object state: " + e.toString());
>         }        
>         getEntityManager().merge(customer);
>     }
> I get the error:
> SEVERE: Failed to get old object state: java.lang.ClassCastException: org.apache.openjpa.kernel.DetachedStateManager
cannot be cast to org.apache.openjpa.kernel.StateManagerImpl
> Can you please suggest a way to get the original loaded object?

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