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// $Id$
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/**
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* Copyright (C) 2015 EDIT
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* European Distributed Institute of Taxonomy
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* http://www.e-taxonomy.eu
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* See LICENSE.TXT at the top of this package for the full license terms.
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*/
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package eu.etaxonomy.cdm.persistence.hibernate;
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import java.util.Map;
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import org.hibernate.Hibernate;
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import org.hibernate.HibernateException;
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import org.hibernate.event.spi.MergeEvent;
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import org.hibernate.event.spi.MergeEventListener;
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import eu.etaxonomy.cdm.model.common.CdmBase;
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/**
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* @author cmathew
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* @date 23 Sep 2015
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*
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*/
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public class PostMergeEntityListener implements MergeEventListener {
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/* (non-Javadoc)
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* @see org.hibernate.event.spi.MergeEventListener#onMerge(org.hibernate.event.spi.MergeEvent)
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*/
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@Override
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public void onMerge(MergeEvent event) throws HibernateException {
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}
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/* (non-Javadoc)
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* @see org.hibernate.event.spi.MergeEventListener#onMerge(org.hibernate.event.spi.MergeEvent, java.util.Map)
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*/
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@Override
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public void onMerge(MergeEvent event, Map copiedAlready) throws HibernateException {
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// at this point the original entity to merge has already been copied to the result
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// => the result is an exact copy of the original EXCEPT or the the id which is set by hibernate
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// the following code sets the id in the original entity so that it can be used as a return value
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// for the CdmEntityDaoBase.merge(T transientObject, boolean returnTransientEntity) call
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if(event.getOriginal() != null && CdmBase.class.isAssignableFrom(event.getOriginal().getClass()) &&
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event.getResult() != null && CdmBase.class.isAssignableFrom(event.getResult().getClass())) {
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CdmBase original = (CdmBase) event.getOriginal();
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CdmBase result = (CdmBase) event.getResult();
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if(original != null && Hibernate.isInitialized(original) && original.getId() == 0 &&
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result != null && Hibernate.isInitialized(result) && result.getId() > 0) {
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original.setId(result.getId());
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//FIXME: Once the EventType.SAVE_UPDATE listeners are cleaned up
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// the same calls should be made on the result object
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// followed by a copy (uncomment code below) to the
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// original object
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// try {
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// BeanUtils.copyProperties(original, result);
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// } catch (IllegalAccessException e) {
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// // TODO Auto-generated catch block
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// e.printStackTrace();
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// } catch (InvocationTargetException e) {
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// // TODO Auto-generated catch block
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// e.printStackTrace();
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// }
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}
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}
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}
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}
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