package org.kuali.student.common.assembly.util.spring;

 import org.aspectj.lang.ProceedingJoinPoint;

 import org.kuali.student.common.assembly.data.Metadata;

 import org.kuali.student.common.util.spring.MethodArgsToObjectEhcacheAdvice;

 public class MetadataMethodEhcacheAdvice extends MethodArgsToObjectEhcacheAdvice {

         @Override

         public Object getFromCache(ProceedingJoinPoint pjp) throws Throwable {

                 try{

                         //Return a copy so that if the data is mutated the original remains

                         Metadata result = (Metadata) super.getFromCache(pjp);

                         return new Metadata(result);

                 }catch(ClassCastException e){

                         throw new RuntimeException("This cache should only be used on methods that return Metadata", e);

                 }

         }

 }