OpenMRS

package org.openmrs.module.chica.rule;

import java.util.Date;
import java.util.Map;
import java.util.Set;

import org.openmrs.Patient;
import org.openmrs.api.context.Context;
import org.openmrs.logic.LogicContext;
import org.openmrs.logic.LogicException;
import org.openmrs.logic.LogicService;
import org.openmrs.logic.Rule;
import org.openmrs.logic.result.Result;
import org.openmrs.logic.result.Result.Datatype;
import org.openmrs.logic.rule.RuleParameterInfo;
import org.openmrs.module.chica.util.Util;

public class chicaAge implements Rule
{
        private LogicService logicService = Context.getLogicService();

        /**
         * *
         * 
         * @see org.openmrs.logic.rule.Rule#getParameterList()
         */
        public Set<RuleParameterInfo> getParameterList()
        {
                return null;
        }

        /**
         * *
         * 
         * @see org.openmrs.logic.rule.Rule#getDependencies()
         */
        public String[] getDependencies()
        {
                return new String[]
                {};
        }

        /**
         * *
         * 
         * @see org.openmrs.logic.rule.Rule#getTTL()
         */
        public int getTTL()
        {
                return 0; // 60 * 30; // 30 minutes
        }

        /**
         * *
         * 
         * @see org.openmrs.logic.rule.Rule#getDatatype(String)
         */
        public Datatype getDefaultDatatype()
        {
                return Datatype.CODED;
        }
        public Result eval(LogicContext context, Patient patient,
                        Map<String, Object> parameters) throws LogicException
        {
                Result ruleResult = null;
                
                if (parameters != null && parameters.get("param0") != null)
                {
                        ruleResult =  (Result) parameters.get("param0");
                        if(ruleResult != null)
                        {
                                Date result = ruleResult.toDatetime();
                                if (result != null)
                                {
                                        String chicaAge = 
                                                Util.adjustAgeUnits(result, null);
                                        return new Result(chicaAge);
                                }
                        }
                }
                return Result.emptyResult();
        }
}