source: src/main/java/agents/anac/y2015/group2/G2Issue.java

package agents.anac.y2015.group2;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;

class G2Issue {
        private Map<String, Double> options;
        private double weight;
        
        public G2Issue() {
                options = new HashMap<String, Double>();
                weight = 0;
        }
        
        public void putValue(String name, double option) {
                options.put(name, option);
        }
        
        public double getValue(String name) {
                return options.get(name);
        }
        
        public double getWeight() {
                return weight;
        }
        
        public void setWeight(double weight) {
                this.weight = weight;
        }
        
        public double getScoreForOption(String name) {
                /*if(options.get(name) == null){
                        System.out.println(name);
                        System.out.println(toString());
                }*/
                return weight * options.get(name);
        }
        public String toString() {
                return options.keySet().toString() + options.values().toString();
        }
        
        public String weightString() {
                Set<Entry<String, Double>> entrySet = options.entrySet();
                String weightString = "" + weight + ": [";
                for(Entry<String, Double> entry : entrySet) {
                        weightString += entry.getKey() + ":" + entry.getValue() + ", ";
                }
                
                if(options.size() > 0)
                        return weightString.substring(0, weightString.length()-2) + "]";
                else
                        return weightString + "]";
        }
        
        public void SetNeutralPreference() {
                for(String key : options.keySet()) {
                        options.put(key, 1.0);
                }
        }
        public void SetZeroPreference() {
                for(String key : options.keySet()) {
                        options.put(key, 0.0);
                }
        }
        
        public void normalizeOptions(){
                double maxOption = 0.0;
                for(double option : options.values()){
                        if(option > maxOption){
                                maxOption = option;
                        }
                }
                for(Entry<String, Double> entry : options.entrySet()){
                        options.put(entry.getKey(), entry.getValue()/maxOption);
                }
        }
        
        public void increaseOption(String option, int nBids){
                putValue(option, options.get(option)+1.0/nBids);
                normalizeOptions();
        }
        
        public void updateWeight(int nBids, double newWeight){
                weight = (weight*nBids + newWeight) / (nBids+1);
        }
        
        public Set<String> getOtherOptions(String option){
                Set<String> otherOptions =  new HashSet <String>(options.keySet());
                otherOptions.remove(option);
                return otherOptions;
        }
        
        public Set<String> getOptionNames() {
                return options.keySet();
        }
}