Examples of nexj.core.meta.Accessor

    * @param reader The reader object.
    * @return True if the query should be executed.
    */
   protected boolean isEnabled(Accessor reader)
   {
      Accessor dispGroup = (Accessor)reader.getValue("dispatchGroup");


      if (dispGroup != null)
      {
         boolean bDispatched = ((Boolean)dispGroup.getValue("dispatched")).booleanValue();


         if (dispGroup == reader)
         {
            if (bDispatched)
            {
               return false;
            }
         }
         else if (((Boolean)reader.getValue("dispatched")).booleanValue() != bDispatched)
         {
            return false;
         }
      }


      Accessor dispParent = (Accessor)reader.getValue("dispatchParent");


      if (dispParent == null)
      {
         if (dispGroup != null && reader != dispGroup)
         {
            reader.setValue("dispatched", Boolean.TRUE);
         }


         return true;
      }


      InstanceList resultList = (InstanceList)dispParent.getValue("results");


      if (resultList == null || resultList.isEmpty())
      {
         return false;
      }


      dispParent = resultList.getInstance(0);


      Pair dispAssoc = (Pair)reader.getValue("dispatchAttribute");
      Pair dispValues = (Pair)reader.getValue("dispatchValues");


      if (dispAssoc == null)
      {
         Metaclass metaclass = dispParent.getMetaclass();


         for (; dispValues != null; dispValues = dispValues.getNext())
         {
            if (m_context.getMetadata().getMetaclass(((Symbol)dispValues.getHead()).getName()).isUpcast(metaclass))
            {
               if (dispGroup != null)
               {
                  dispGroup.setValue("dispatched", Boolean.TRUE);


                  if (reader != dispGroup)
                  {
                     reader.setValue("dispatched", Boolean.TRUE);
                  }
               }


               return true;
            }
         }


         return false;
      }


      Object value;


      for (value = dispParent; value != null && dispAssoc != null; dispAssoc = dispAssoc.getNext())
      {
         dispParent = (Accessor)value;


         Attribute attribute = dispParent.getMetaclass().getAttribute(((Symbol)dispAssoc.getHead()).getName());


         attribute.checkReadAccess(m_context.getPrivilegeSet());
         value = dispParent.getValue(attribute.getOrdinal());
      }


      for (; dispValues != null; dispValues = dispValues.getNext())
      {
         if (Intrinsic.equal(value, dispValues.getHead()))

            List assocList = (List)reader.getValue("associations");
            boolean bConj = false;


            for (int i = parentList.size() - 1; i >= 0; --i)
            {
               Accessor parent = (Accessor)parentList.get(i);
               InstanceList resultList = (InstanceList)parent.getValue("results");


               if (resultList == null || resultList.size() == 0)
               {
                  return setEmptyResult(reader);
               }

               {
                  throw new TypeMismatchException(getSymbol());
               }


               int nOrdinal = ((Number)ordinal).intValue();
               Accessor accessor = (Accessor)obj;


               if (!Boolean.TRUE.equals(accessor.getValue(nOrdinal)) &&
                  (!(accessor instanceof Instance) ||
                     !Boolean.TRUE.equals(((Instance)accessor).getOldValue(nOrdinal))))
               {
                  throw new SecurityViolationException("err.runtime.access",
                     new Object[]{accessor.getMetaclass().getName()});
               }
            }


            machine.returnValue(null, nArgCount);

Examples of nexj.core.meta.Accessor

Related Classes of nexj.core.meta.Accessor