@Override
 public void remove(MemberAttribute memberAttribute) {
   if ((memberAttribute != null)
       && ((memberAttribute.getType() == MemberAttribute.Type.text)
           || (memberAttribute.getType() == MemberAttribute.Type.select)
           || (memberAttribute.getType() == MemberAttribute.Type.checkbox))) {
     String str1 = "attributeValue" + memberAttribute.getPropertyIndex();
     String str2 = "update Member members set members." + str1 + " is null";
     this.getEntityManager().createQuery(str2).setFlushMode(FlushModeType.COMMIT).executeUpdate();
     super.remove(memberAttribute);
   }
 }
 @Override
 public void delete(ProductCategory productCategory) {
   if (productCategory != null) {
     StringBuffer localStringBuffer = new StringBuffer("update Product product set ");
     for (int i = 0; i < 20; i++) {
       String str = "attributeValue" + i;
       if (i == 0) localStringBuffer.append("product." + str + " = null");
       else localStringBuffer.append(", product." + str + " = null");
     }
     localStringBuffer.append(" where product.productCategory = :productCategory");
     this.getEntityManager()
         .createQuery(localStringBuffer.toString())
         .setFlushMode(FlushModeType.COMMIT)
         .setParameter("productCategory", productCategory)
         .executeUpdate();
     super.remove(productCategory);
   }
 }