How to use

moveTailForward

method

in

com.ociweb.pronghorn.pipe.ObjectPipe

private boolean consumeResultObjectDBUpdate(final ResultObject t) {
  boolean ok;
  //collect all the objects
  collectorDBUpdate.add(t);
  DBUpdateInFlight.moveTailForward();//only move forward when it is consumed.
  if (collectorDBUpdate.size() == t.getGroupSize()) {
    //now ready to send, we have all the data						
    ok =publishMultiResponseDBUpdate(t.getConnectionId(), t.getSequenceId());
  } else {
    ok = true;//added to list
  }                
  
  return ok;
}

private boolean consumeResultObjectDBRest(final ResultObject t) {
  boolean ok;
          
  ///////////////////////////////
  if (0 == t.getGroupSize()) {	
    ok = service.publishHTTPResponse(t.getConnectionId(), t.getSequenceId(), 200,
        HTTPContentTypeDefaults.JSON,
        w-> {
          Templates.singleTemplateDBRest.render(w, t);
          t.setStatus(-1);
          DBRestInFlight.moveTailForward();//only move forward when it is consumed.
          DBRestInFlight.publishTailPosition();
        });                    
  } else {
    //collect all the objects
    assert(isValidToAdd(t, collectorDBRest));
    collectorDBRest.add(t);                    
    DBRestInFlight.moveTailForward();
    if (collectorDBRest.size() == t.getGroupSize()) {
      //now ready to send, we have all the data						
      ok =publishMultiDBResponse(t.getConnectionId(), t.getSequenceId());
      
    } else {
      ok = true;//added to list
    }    
    //moved forward so we can read next but write logic will still be blocked by state not -1			 
    
  }
  return ok;
}

fortuneInFlight.moveTailForward();//only move forward when it is consumed.
fortuneInFlight.publishTailPosition();
t.list().clear();