source: AnnotationManagerN4J/src/main/java/de/mpiwg/itgroup/annotations/restlet/utils/JSONObjectComparator.java @ 70:2b1e6df5e21a

package de.mpiwg.itgroup.annotations.restlet.utils;

/*
 * #%L
 * AnnotationManager
 * %%
 * Copyright (C) 2012 - 2014 MPIWG Berlin
 * %%
 * This program 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.
 * 
 * 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 Lesser Public License for more details.
 * 
 * You should have received a copy of the GNU General Lesser Public 
 * License along with this program.  If not, see
 * <http://www.gnu.org/licenses/lgpl-3.0.html>.
 * #L%
 * Author: Dirk Wintergruen (dwinter@mpiwg-berlin.mpg.de)
 */

import java.util.Comparator;
import java.util.List;

import org.json.JSONException;
import org.json.JSONObject;

public class JSONObjectComparator implements Comparator<JSONObject>{
   
        private String attributeToSort;
        public JSONObjectComparator(String attribute){
                this.attributeToSort=attribute;
        }
        
        public int compare( JSONObject a, JSONObject b ) {
        // je quadratischer, desto grösser
                String sortA;
                try {
                        sortA = a.getString(attributeToSort);
                } catch (JSONException e) {
                        sortA ="";
                }
                String sortB;
                try {
                        sortB = b.getString(attributeToSort);
                } catch (JSONException e) {
                        sortB="";
                }
        
                
        return sortA.compareToIgnoreCase(sortB);
    }
        
        /**
         * Sortiere array nach einem Parameter in den Annotationen
         * @param results
         * @return
         */
        public static void sortAnnotations(List<JSONObject> results,String attribute) {
                JSONObjectComparator comp = new JSONObjectComparator(attribute);
                
                
        
                java.util.Collections.sort( results, comp);
                
                

        }        
        
}