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/**
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* Copyright (C) 2018 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 org.apache.commons.lang.ArrayUtils;
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import org.apache.log4j.Logger;
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import org.hibernate.event.spi.PostInsertEvent;
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import org.hibernate.event.spi.PostInsertEventListener;
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import org.hibernate.event.spi.PostUpdateEvent;
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import org.hibernate.event.spi.PostUpdateEventListener;
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import org.hibernate.persister.entity.EntityPersister;
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import eu.etaxonomy.cdm.model.name.TaxonName;
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import eu.etaxonomy.cdm.model.reference.Reference;
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import eu.etaxonomy.cdm.persistence.dao.taxonGraph.ITaxonGraphDao;
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import eu.etaxonomy.cdm.persistence.dao.taxonGraph.TaxonGraphException;
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/**
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* @author a.kohlbecker
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* @since Sep 27, 2018
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*
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*/
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public class TaxonGraphHibernateListener implements PostInsertEventListener, PostUpdateEventListener {
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private static final long serialVersionUID = 5062518307839173935L;
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private static TaxonGraphHibernateListener instance;
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private ITaxonGraphDao taxonGraphDao;
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public void setTaxonGraphDao(ITaxonGraphDao taxonGraphDao){
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this.taxonGraphDao = taxonGraphDao;
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}
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private String[] NAMEPARTS_OR_RANK_PROPS = new String[]{"genusOrUninomial", "specificEpithet", "rank"};
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private String[] NOMREF_PROP = new String[]{"nomenclaturalReference"};
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private int checkStateChange(PostUpdateEvent event, String[] propertyNamesToCheck){
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String[] propertyNames = event.getPersister().getPropertyNames();
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Object[] oldState = event.getOldState();
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Object[] state = event.getState();
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int propsCheckedCnt = 0;
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for(int i = 0; i < propertyNames.length; i++){
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if(ArrayUtils.contains(propertyNamesToCheck, propertyNames[i])){
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propsCheckedCnt++;
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if(!oldState[i].equals(state[i])){
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return i;
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}
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if(propsCheckedCnt == propertyNamesToCheck.length){
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return -1;
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}
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}
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}
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// this execption should be raised during the unit tests already and thus will never occur in production
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throw new RuntimeException("TaxonName class misses at least one property of: " + ArrayUtils.toString(propertyNamesToCheck));
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}
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@Override
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public void onPostUpdate(PostUpdateEvent event) {
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if(taxonGraphDao == null){
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return;
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}
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try {
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if(event.getEntity() instanceof TaxonName){
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if(checkStateChange(event, NAMEPARTS_OR_RANK_PROPS) > -1){
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taxonGraphDao.onNameOrRankChange((TaxonName) event.getEntity());
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}
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int changedNomRefIndex = checkStateChange(event, NOMREF_PROP);
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if(changedNomRefIndex > -1){
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taxonGraphDao.onNomReferenceChange((TaxonName) event.getEntity(), (Reference)event.getOldState()[changedNomRefIndex]);
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}
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}
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} catch (TaxonGraphException e) {
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Logger.getLogger(this.getClass()).error(e);
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}
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}
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@Override
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public void onPostInsert(PostInsertEvent event) {
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if(taxonGraphDao == null){
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return;
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}
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try {
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if(event.getEntity() instanceof TaxonName){
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taxonGraphDao.onNewTaxonName((TaxonName) event.getEntity());
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}
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} catch (TaxonGraphException e) {
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Logger.getLogger(this.getClass()).error(e);
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}
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}
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@Override
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public boolean requiresPostCommitHanding(EntityPersister persister) {
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return true;
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}
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/**
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* @return
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*/
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public static TaxonGraphHibernateListener instance() {
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if(instance == null){
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instance = new TaxonGraphHibernateListener();
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}
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return instance;
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}
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}
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