package org.kuali.student.enrollment.class1.lpr.service.aspect;

 import java.util.List;

 import org.aspectj.lang.JoinPoint;

 import org.kuali.student.common.exceptions.MissingParameterException;

 import org.kuali.student.common.exceptions.OperationFailedException;

 /**

  * 

  * @author sambit

  * 

  * @param <T> the service this aspect is operating on

  */

 public class ServiceAspects<T>  {

         List<Throwable> includeThrowableClassList ;

         public void setIncludeThrowableClassList(List <Throwable> serviceExceptionTypes) {

                 this.includeThrowableClassList = serviceExceptionTypes;

         }

         /**

          * @param join

          */

         public void beforeInvokingService(JoinPoint join) throws Throwable{

                 Object[] argValues =  join.getArgs();

                 for(Object argValue:argValues){

                         if(argValue==null){

                                 throw new MissingParameterException("Input parameters cannot be null, one of the parameters had null value:"+argValue);

                         }

                 }

         }

         /**

          * 

          * @param ex

          * @return

          * @throws Throwable

          */

         public void handleExceptions(Throwable ex) throws OperationFailedException{

                 if (!includeThrowableClassList.contains(ex)) {

                         throw new OperationFailedException(ex.getMessage(), ex);

                 }

         }

 }