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/* InvariantValuesSaver.java
* =========================================================================
* This file is part of the GrInvIn project - http://www.grinvin.org
*
* Copyright (C) 2005-2008 Universiteit Gent
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or (at
* your option) any later version.
*
* This program 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
* General Public License for more details.
*
* A copy of the GNU General Public License can be found in the file
* LICENSE.txt provided with the source distribution of this program (see
* the META-INF directory in the source jar). This license can also be
* found on the GNU website at http://www.gnu.org/licenses/gpl.html.
*
* If you did not receive a copy of the GNU General Public License along
* with this program, contact the lead developer, or write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
package org.grinvin.io;
import java.io.IOException;
import java.io.OutputStream;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import org.grinvin.invariants.InvariantValue;
import org.grinvin.invariants.InvariantValueDelegate;
import org.jdom.DocType;
import org.jdom.Element;
/**
* Saved for the computed values of a saved GraphBundle
*/
public class InvariantValuesSaver {
//
private static final String PUBLIC_ID = "-//GrInvIn IO//Invariant Values 1.1//EN";
//
private InvariantValuesSaver() { }
private static Collection<InvariantValue> sortValues(Collection<InvariantValue> values) {
List<InvariantValue> result = new ArrayList<InvariantValue>(values);
Collections.sort(result, new MyComparator());
return result;
}
//
public static void save(Collection<InvariantValue> values, OutputStream out) throws IOException {
Element element = new Element("invariantvalues");
for (InvariantValue value : sortValues(values)) {
InvariantValueDelegate delegate = value.getType().getDelegate();
element.addContent(delegate.toElement(value));
}
LoaderSaverHelper.outputXML(element,
new DocType("invariantvalues", PUBLIC_ID, "http://downloads.grinvin.org/dtds/io/invariantvalues-1.1.dtd"),
out);
}
private static class MyComparator implements Comparator<InvariantValue> {
public int compare(InvariantValue value1, InvariantValue value2) {
return value1.getInvariant().getId().compareTo(value2.getInvariant().getId());
}
}
}
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