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/**
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* Copyright (C) 2016 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.hibernate;
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import java.util.Collection;
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import org.apache.log4j.Logger;
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import org.hibernate.LazyInitializationException;
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/**
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* Helper class to remove null values from collections which are left over artifacts due to
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* https://hibernate.atlassian.net/browse/HHH-9751
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*
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* @author a.kohlbecker
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\* @since Jun 13, 2016
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*
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*/
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public class HHH_9751_Util {
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private static final Logger logger = Logger.getLogger(HHH_9751_Util.class);
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/**
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*
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* @param collection
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* @return the number of null values removed from the collection
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*/
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static public int removeAllNull(Collection collection) {
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int cnt = 0;
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try {
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if (collection.contains(null)){
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while(collection.contains(null)){
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cnt++;
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collection.remove(null);
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}
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}
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} catch (LazyInitializationException e) {
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logger.info("Cannot clean up uninitialized children without a session, skipping.");
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}
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return cnt ;
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}
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}
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