/**
* This file is part of Archiv-Editor.
*
* The software Archiv-Editor serves as a client user interface for working with
* the Person Data Repository. See: pdr.bbaw.de
*
* The software Archiv-Editor was developed at the Berlin-Brandenburg Academy
* of Sciences and Humanities, Jägerstr. 22/23, D-10117 Berlin.
* www.bbaw.de
*
* Copyright (C) 2010-2013 Berlin-Brandenburg Academy
* of Sciences and Humanities
*
* The software Archiv-Editor was developed by @author: Christoph Plutte.
*
* Archiv-Editor is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Archiv-Editor is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Archiv-Editor.
* If not, see <http://www.gnu.org/licenses/lgpl-3.0.html>.
*/
package org.bbaw.pdr.ae.control.comparator;
import java.util.Comparator;
import org.bbaw.pdr.ae.metamodel.PdrDate;
import org.bbaw.pdr.ae.model.ReferenceMods;
/**
* comparator for References by chronology.
* @author Christoph Plutte
*/
public class ReferenceCronComparator implements Comparator<ReferenceMods>
{
/** ascending flag. */
private boolean _ascending = true;
/**
* constructor with descending flag.
* @param ascending ascending flag. Comparator will sort in descending order if false.
*/
public ReferenceCronComparator(final boolean ascending)
{
this._ascending = ascending;
}
@Override
public final int compare(final ReferenceMods r1, final ReferenceMods r2)
{
int diff = 0;
PdrDate d1 = null;
PdrDate d2 = null;
if (r1.getOriginInfo() != null && r1.getOriginInfo().getDateIssued() != null)
{
d1 = r1.getOriginInfo().getDateIssued();
}
else if (r1.getOriginInfo() != null && r1.getOriginInfo().getDateIssuedTimespan() != null
&& r1.getOriginInfo().getDateIssuedTimespan().getDateFrom() != null)
{
d1 = r1.getOriginInfo().getDateIssuedTimespan().getDateFrom();
}
else if (r1.getOriginInfo() != null && r1.getOriginInfo().getDateCreated() != null)
{
d1 = r1.getOriginInfo().getDateCreated();
}
else if (r1.getOriginInfo() != null && r1.getOriginInfo().getDateCreatedTimespan() != null
&& r1.getOriginInfo().getDateCreatedTimespan().getDateFrom() != null)
{
d1 = r1.getOriginInfo().getDateCreatedTimespan().getDateFrom();
}
else if (r1.getOriginInfo() != null && r1.getOriginInfo().getCopyrightDate() != null)
{
d1 = r1.getOriginInfo().getCopyrightDate();
}
else if (r1.getOriginInfo() != null && r1.getOriginInfo().getCopyrightDateTimespan() != null
&& r1.getOriginInfo().getCopyrightDateTimespan().getDateFrom() != null)
{
d1 = r1.getOriginInfo().getCopyrightDateTimespan().getDateFrom();
}
else if (r1.getOriginInfo() != null && r1.getOriginInfo().getDateCaptured() != null)
{
d1 = r1.getOriginInfo().getDateCaptured();
}
else if (r1.getOriginInfo() != null && r1.getOriginInfo().getDateCapturedTimespan() != null
&& r1.getOriginInfo().getDateCapturedTimespan().getDateFrom() != null)
{
d1 = r1.getOriginInfo().getDateCapturedTimespan().getDateFrom();
}
if (r2.getOriginInfo() != null && r2.getOriginInfo().getDateIssued() != null)
{
d2 = r2.getOriginInfo().getDateIssued();
}
else if (r2.getOriginInfo() != null && r2.getOriginInfo().getDateIssuedTimespan() != null
&& r2.getOriginInfo().getDateIssuedTimespan().getDateFrom() != null)
{
d2 = r2.getOriginInfo().getDateIssuedTimespan().getDateFrom();
}
else if (r2.getOriginInfo() != null && r2.getOriginInfo().getDateCreated() != null)
{
d2 = r2.getOriginInfo().getDateCreated();
}
else if (r2.getOriginInfo() != null && r2.getOriginInfo().getDateCreatedTimespan() != null
&& r2.getOriginInfo().getDateCreatedTimespan().getDateFrom() != null)
{
d2 = r2.getOriginInfo().getDateCreatedTimespan().getDateFrom();
}
else if (r2.getOriginInfo() != null && r2.getOriginInfo().getCopyrightDate() != null)
{
d2 = r2.getOriginInfo().getCopyrightDate();
}
else if (r2.getOriginInfo() != null && r2.getOriginInfo().getCopyrightDateTimespan() != null
&& r2.getOriginInfo().getCopyrightDateTimespan().getDateFrom() != null)
{
d2 = r2.getOriginInfo().getCopyrightDateTimespan().getDateFrom();
}
else if (r2.getOriginInfo() != null && r2.getOriginInfo().getDateCaptured() != null)
{
d2 = r2.getOriginInfo().getDateCaptured();
}
else if (r2.getOriginInfo() != null && r2.getOriginInfo().getDateCapturedTimespan() != null
&& r2.getOriginInfo().getDateCapturedTimespan().getDateFrom() != null)
{
d2 = r2.getOriginInfo().getDateCapturedTimespan().getDateFrom();
}
if (d1 != null && d2 != null)
{
diff = d1.compare(d2);
}
else if (d1 != null)
{
diff = -1;
}
else if (d2 != null)
{
diff = 1;
}
else
{
diff = 0;
}
return diff * (_ascending ? 1 : -1);
}
}