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/**
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* Copyright (C) 2007 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.model.location;
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import java.util.HashMap;
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import java.util.Map;
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import java.util.UUID;
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import javax.persistence.Entity;
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import javax.xml.bind.annotation.XmlAccessType;
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import javax.xml.bind.annotation.XmlAccessorType;
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import javax.xml.bind.annotation.XmlRootElement;
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import javax.xml.bind.annotation.XmlType;
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import org.apache.log4j.Logger;
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import org.hibernate.envers.Audited;
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import eu.etaxonomy.cdm.model.common.DefaultTermInitializer;
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import eu.etaxonomy.cdm.model.common.DefinedTermBase;
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import eu.etaxonomy.cdm.model.common.TermVocabulary;
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/**
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 * Reference systems for coordinates also according to OGC (Open Geographical
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 * Consortium) The list should be extensible at runtime through configuration.
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 * This needs to be investigated.
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 * @author m.doering
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 * @version 1.0
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 * @created 08-Nov-2007 13:06:49
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 */
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@XmlAccessorType(XmlAccessType.FIELD)
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@XmlType(name = "ReferenceSystem")
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@XmlRootElement(name = "ReferenceSystem")
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@Entity
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@Audited
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public class ReferenceSystem extends DefinedTermBase<ReferenceSystem> {
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	private static final long serialVersionUID = 2704455299046749175L;
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	@SuppressWarnings("unused")
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	private static final Logger logger = Logger.getLogger(ReferenceSystem.class);
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	protected static Map<UUID, ReferenceSystem> termMap = null;		
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	private static final UUID uuidWGS84 = UUID.fromString("63f4dd55-00fa-49e7-96fd-2b7059a1c1ee");
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	/**
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	 * Factory method
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	 * @return
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	 */
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	public static ReferenceSystem NewInstance(){
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		return new ReferenceSystem();
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	}
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	/**
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	 * Factory method
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	 * @return
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	 */
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	public static ReferenceSystem NewInstance(String term, String label, String labelAbbrev){
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		return new ReferenceSystem(term, label, labelAbbrev);
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	}
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	/**
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	 * Constructor
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	 */
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	public ReferenceSystem() {
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	}
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	/**
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	 * Constructor
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	 */
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	private ReferenceSystem(String term, String label, String labelAbbrev) {
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		super(term, label, labelAbbrev);
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	}
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	protected static ReferenceSystem getTermByUuid(UUID uuid){
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		if (termMap == null){
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			DefaultTermInitializer vocabularyStore = new DefaultTermInitializer();
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			vocabularyStore.initialize();
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		}
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		return (ReferenceSystem)termMap.get(uuid);
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	}
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	public static final ReferenceSystem WGS84(){
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		return getTermByUuid(uuidWGS84);
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	}
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	@Override
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	protected void setDefaultTerms(TermVocabulary<ReferenceSystem> termVocabulary){
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		termMap = new HashMap<UUID, ReferenceSystem>();
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		for (ReferenceSystem term : termVocabulary.getTerms()){
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			termMap.put(term.getUuid(), term); 
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		}
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	}
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}
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