source: src/main/java/agents/similarity/CriteriaReal.java

package agents.similarity;

import java.util.HashMap;

import genius.core.Bid;
import genius.core.Domain;
import genius.core.issue.IssueReal;
import genius.core.issue.ValueReal;
import genius.core.utility.EVALFUNCTYPE;
import genius.core.utility.EVALUATORTYPE;
import genius.core.xml.SimpleElement;

public class CriteriaReal implements Criteria {
        // Class fields
        // double lowerBound;
        // double upperBound;
        EVALFUNCTYPE type;
        private int fIssueIndex;
        private Domain fDomain;
        HashMap<Integer, Double> fParam;

        public CriteriaReal(Domain pDomain, int pIssueIndex) {
                fIssueIndex = pIssueIndex;
                fDomain = pDomain;
                fParam = new HashMap<Integer, Double>();
        }

        public double getValue(Bid pBid) {
                double utility = 0;
                try {
                        double value = ((ValueReal) pBid.getValue(fIssueIndex)).getValue();
                        switch (this.type) {
                        case FARATIN:
                                IssueReal lIssue = (IssueReal) (fDomain.getObjectivesRoot()
                                                .getObjective(fIssueIndex));
                                utility = EVALFUNCTYPE.evalFaratin(value,
                                                lIssue.getUpperBound(), lIssue.getLowerBound(),
                                                this.fParam.get(0), this.fParam.get(1));
                                /*
                                 * if (utility<0) utility = 0; else if (utility > 1) utility =
                                 * 1;
                                 */
                                return utility;

                        case LINEAR:
                                utility = EVALFUNCTYPE.evalLinear(value, this.fParam.get(1),
                                                this.fParam.get(0));
                                if (utility < 0)
                                        utility = 0;
                                else if (utility > 1)
                                        utility = 1;
                                return utility;
                        case CONSTANT:
                                return this.fParam.get(0);
                        default:
                                return -1.0;
                        }
                } catch (Exception e) {
                        e.printStackTrace();
                }
                return utility;
        }

        public EVALUATORTYPE getType() {
                return EVALUATORTYPE.REAL;
        }

        /*
         * public double getLowerBound() { return lowerBound; }
         * 
         * public double getUpperBound() { return lowerBound; }
         */
        public void loadFromXML(SimpleElement pRoot) {
                // Object[] xml_item =
                // ((SimpleElement)pRoot).getChildByTagName("range");
                // this.lowerBound =
                // Double.valueOf(((SimpleElement)xml_item[0]).getAttribute("lowerbound"));
                // this.upperBound =
                // Double.valueOf(((SimpleElement)xml_item[0]).getAttribute("upperbound"));
                String ftype = pRoot.getAttribute("type");
                if (ftype != null)
                        this.type = EVALFUNCTYPE.convertToType(ftype);
                // TODO: define exception.
                // TODO: DT: redefine this swith in more generic way
                switch (this.type) {
                case FARATIN:
                        this.fParam
                                        .put(1, Double.valueOf(pRoot.getAttribute("parameter1")));
                        this.fParam
                                        .put(0, Double.valueOf(pRoot.getAttribute("parameter0")));
                        break;
                case LINEAR:
                        this.fParam
                                        .put(1, Double.valueOf(pRoot.getAttribute("parameter1")));
                case CONSTANT:
                        this.fParam
                                        .put(0, Double.valueOf(pRoot.getAttribute("parameter0")));
                }
        }
}