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/*****************************************************************************
* Copyright (c) 2015 CEA LIST and others.
*
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* CEA LIST - Initial API and implementation
*
*****************************************************************************/
package org.eclipse.papyrus.infra.nattable.comparator;
import java.math.BigDecimal;
import java.util.Comparator;
import org.eclipse.papyrus.infra.nattable.filter.FilterPreferences;
import org.eclipse.papyrus.infra.tools.util.TypeUtils;
/**
* @author VL222926
*
*/
public class DoubleFilterComparator implements Comparator<Object> {
private static DoubleFilterComparator singleton;
/**
*
* @return
*/
public static final DoubleFilterComparator getInstance() {
if (singleton == null) {
singleton = new DoubleFilterComparator();
}
return singleton;
}
/**
* @see java.util.Comparator#compare(java.lang.Object, java.lang.Object)
*
* @param o1
* @param o2
* @return
*/
@Override
public int compare(Object o1, Object o2) {
if (o1 instanceof Double && o2 instanceof Double) {
Double d1 = (Double) o1;
Double d2 = (Double) o2;
return d1.compareTo(d2);
}
if (!(o1 instanceof Double)) {
return FilterPreferences.INCONSISTENT_VALUE;
}
// o1 is the cell value and o2 the value to match
if (o1 instanceof Double) {
Double d1 = (Double) o1;
Double d2 = null;
if (o2 instanceof Double) {
if (TypeUtils.isDoubleValue(o2.toString())) {
// big decimal to avoid to get comma as separator instead of dot
d2 = new BigDecimal(o2.toString()).doubleValue();
return d1.compareTo(d2);
}
return FilterPreferences.INCONSISTENT_VALUE;
}
}
return FilterPreferences.INCONSISTENT_VALUE;
}
}
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