Tapestry 2.4 and Cayenne

[David Solis <ds...@legosoft.com.mx>]

As Howard and Craig suggested, I implememented a Tapestry extension
named CayenneValuePersister subclass of DefaultValuePersister which
registers ImmutableValueCopier as the value copier for interface
DataObject.

Here the code:

-------------------------------------------------
/*
 *  $Id: CayenneValuePersister.java,v 1.4 2003/02/20 02:12:00 dsolis Exp
$
 *  LegoSoft, Feb 19, 2003
 *  Copyright (C) 2001-2003 LegoSoft
 */
package com.ixe.isis.util;

import net.sf.tapestry.record.DefaultValuePersister;
import net.sf.tapestry.record.ImmutableValueCopier;
import net.sf.tapestry.IRequestCycle;
import org.objectstyle.cayenne.DataObject;

/**
 * In order to assure the uniqueness of Cayenne DataObject within a
DataContext/ObjectStore,
 * this class registers ImmutableValueCopier as the value copier for
interface DataObject.
 *
 * It is necessary to add the extension to application spec, i.e.
 * <pre>
 * <extension name="net.sf.tapestry.value-persister"
class="com.ixe.isis.util.CayenneValuePersister"/>
 * </pre>
 *
 * @author David Solis
 * @version $Revision: 1.4 $ $Date: 2003/02/20 02:12:00 $
 */

public class CayenneValuePersister extends DefaultValuePersister {

    public void initialize(IRequestCycle cycle) {
        registerValueCopier(DataObject.class, new
ImmutableValueCopier());
        super.initialize(cycle);
    }
}

-------------------------------------------------

Regards

David