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/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package org.anjocaido.groupmanager.utils;
import java.util.Comparator;
/**
*
* @author gabrielcouto
*/
public class StringPermissionComparator implements Comparator<String>
{
@Override
public int compare(String permA, String permB)
{
boolean ap = permA.startsWith("+");
boolean bp = permB.startsWith("+");
boolean am = permA.startsWith("-");
boolean bm = permB.startsWith("-");
if (ap && bp)
{
return 0;
}
if (ap && !bp)
{
return -1;
}
if (!ap && bp)
{
return 1;
}
if (am && bm)
{
return 0;
}
if (am && !bm)
{
return -1;
}
if (!am && bm)
{
return 1;
}
return permA.compareToIgnoreCase(permB);
}
private static StringPermissionComparator instance;
public static StringPermissionComparator getInstance()
{
if (instance == null)
{
instance = new StringPermissionComparator();
}
return instance;
}
}
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