Teko_RequestHandler_impl.hpp

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//      Teko: A package for block and physics based preconditioning
//                  Copyright 2010 Sandia Corporation 
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#ifndef __Teko_RequestHandler_impl_hpp__
#define __Teko_RequestHandler_impl_hpp__

template <typename DataT>
DataT RequestHandler::request(const RequestMesg & rd) const
{
   using Teuchos::RCP;
   using Teuchos::rcp_dynamic_cast;

   // type of call back to use
   typedef RequestCallback<DataT> CallbackT;

   // distribute message over all callbacks
   std::vector<RCP<RequestCallbackBase> >::iterator itr;
   for(itr=callbacks_.begin();itr!=callbacks_.end();++itr) {
      RCP<CallbackT> cb = rcp_dynamic_cast<CallbackT>(*itr);

      // call back not right type
      if(cb==Teuchos::null)
         continue;

      // does call back handle this request?
      if(cb->handlesRequest(rd)) 
         return cb->request(rd);
   }

   TEUCHOS_TEST_FOR_EXCEPTION(true,std::runtime_error,
         "RequestHandler::request could not find appropriate callback: " << rd);
}

template <typename DataT>
void RequestHandler::preRequest(const RequestMesg & rd) const
{
   using Teuchos::RCP;
   using Teuchos::rcp_dynamic_cast;

   // type of call back to use
   typedef RequestCallback<DataT> CallbackT;

   // distribute message over all callbacks
   std::vector<RCP<RequestCallbackBase> >::iterator itr;
   for(itr=callbacks_.begin();itr!=callbacks_.end();++itr) {
      RCP<CallbackT> cb = rcp_dynamic_cast<CallbackT>(*itr);

      // call back not right type
      if(cb==Teuchos::null)
         continue;

      // does call back handle this request?
      if(cb->handlesRequest(rd)) 
         return cb->preRequest(rd);
   }

   TEUCHOS_TEST_FOR_EXCEPTION(true,std::runtime_error,
         "RequestHandler::preRequest could not find appropriate callback: " << rd);
}

#endif