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/*
 * ====================================================================
 * Project:     openMDX/Core, http://www.openmdx.org/
 * Description: Preferences Entry plug-in
 * Owner:       OMEX AG, Switzerland, http://www.omex.ch
 * ====================================================================
 *
 * This software is published under the BSD license as listed below.
 * 
 * Copyright (c) 2012, OMEX AG, Switzerland
 * All rights reserved.
 * 
 * Redistribution and use in source and binary forms, with or
 * without modification, are permitted provided that the following
 * conditions are met:
 * 
 * * Redistributions of source code must retain the above copyright
 *   notice, this list of conditions and the following disclaimer.
 * 
 * * Redistributions in binary form must reproduce the above copyright
 *   notice, this list of conditions and the following disclaimer in
 *   the documentation and/or other materials provided with the
 *   distribution.
 * 
 * * Neither the name of the openMDX team nor the names of its
 *   contributors may be used to endorse or promote products derived
 *   from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
 * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 * 
 * ------------------
 * 
 * This product includes software developed by other organizations as
 * listed in the NOTICE file.
 */
package org.openmdx.preferences2.aop2;

import javax.jdo.listener.StoreCallback;

import org.openmdx.base.aop2.AbstractObject;
import org.openmdx.base.persistence.cci.PersistenceHelper;

/**
 * Entry plug-in
 */
public class EntryImpl<
    S extends org.openmdx.preferences2.jmi1.Entry,
    N extends org.openmdx.preferences2.cci2.Entry
> extends AbstractObject implements StoreCallback {

    /**
     * Constructor 
     *
     * @param same
     * @param next
     */
    public EntryImpl(S same, N next) {
        super(same, next);
    }

    /**
     * Retrieves the value for the attribute name.
     * @return The non-null value for attribute name.
     */
    public java.lang.String getName(
    ){
        return PersistenceHelper.getLastXRISegment(nextObject());
    }

    /* (non-Javadoc)
     * @see org.openmdx.base.aop2.AbstractObject#jdoPreStore()
     */
    @Override
    public void jdoPreStore() {
        N next = nextObject();
        if(next.getValue() == null) {
            nextManager().deletePersistent(next);
        } else {
            super.jdoPreStore();
        }
    }

}