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package eu.etaxonomy.taxeditor.ui.section.description;
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import java.util.Comparator;
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import eu.etaxonomy.cdm.model.common.OriginalSourceBase;
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import eu.etaxonomy.cdm.model.common.OriginalSourceType;
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import eu.etaxonomy.cdm.model.reference.Reference;
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/**
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* @author pplitzner
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* @date Apr 13, 2016
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*
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*/
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public class SourceComparator <T extends OriginalSourceBase> implements Comparator<T> {
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@Override
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public int compare(T o1, T o2) {
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int id1 = o1.getId();
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int id2 = o2.getId();
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OriginalSourceType type1 = o1.getType();
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OriginalSourceType type2 = o2.getType();
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Reference citation1 = o1.getCitation();
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Reference citation2 = o2.getCitation();
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int result = 0;
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// the newly created should always be on top
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if (id1 == 0){
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if(id2!=0) {
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result = -1;
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}
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else{
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result = 0;
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}
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} else if(id2==0){
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result = 1;
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}
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// sort by type (Primary taxonomic > Primary Media > others
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// alphabetically by reference title cache)
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else if (type1 == null){
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if(type2==null){
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result = 0;
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}
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else{
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result = 1;
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}
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} else if (type2 == null){
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result = -1;
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} else if(type1.equals(type2)){
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result = 0;
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} else if (type1.equals(OriginalSourceType.PrimaryTaxonomicSource)){
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result = -1;
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} else if (type2.equals(OriginalSourceType.PrimaryTaxonomicSource)){
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result = 1;
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} else if (type1.equals(OriginalSourceType.PrimaryMediaSource)){
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result = -1;
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} else if (type2.equals(OriginalSourceType.PrimaryMediaSource)){
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result = 1;
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}
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//sort by citation title cache if types are equal
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if (result == 0){
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if(citation1!=null && citation2!=null){
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result = citation1.getTitleCache().compareTo(citation2.getTitleCache());
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}
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if(o2.getCreated()!=null && o1.getCreated()!=null){
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result = o2.getCreated().compareTo(o1.getCreated());
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}
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if (result == 0){
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//default fallback
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return o1.getId() - o2.getId();
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}
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}
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return result;
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}
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}
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