public void watchClose(HClientWatch w, bool bSend)
{
// mark flag on watch itself, short circuit if already closed
if (w.Closed)
{
return;
}
w.Closed = true;
// remove it from my lookup table
if (w.ID != null)
{
m_watches_Renamed.Remove(w.ID);
}
// optionally send close message to server
if (bSend)
{
try
{
HGridBuilder b = new HGridBuilder();
b.Meta.add("watchId", w.ID).add("close");
b.addCol("id");
call("watchUnsub", b.toGrid());
}
catch (Exception /*e*/)
{
// YET TO DO - we aren't doing anything here, why?
}
}
}
public void watchUnsub(HClientWatch w, HRef[] ids)
{
if (ids.Length == 0)
{
throw new ArgumentException("ids are empty", "ids");
}
if (w.ID == null)
{
throw new InvalidOperationException("nothing subscribed yet");
}
if (w.Closed)
{
throw new InvalidOperationException("watch is closed");
}
// grid meta
HGridBuilder b = new HGridBuilder();
b.Meta.add("watchId", w.ID);
// grid rows
b.addCol("id");
for (int i = 0; i < ids.Length; ++i)
{
b.addRow(new HVal[] { ids[i] });
}
// make request
HGrid req = b.toGrid();
call("watchUnsub", req);
}
public HGrid watchPoll(HClientWatch w, bool bRefresh)
{
if (w.ID == null)
{
throw new InvalidOperationException("nothing subscribed yet");
}
if (w.Closed)
{
throw new InvalidOperationException("watch is closed");
}
// grid meta
HGridBuilder b = new HGridBuilder();
b.Meta.add("watchId", w.ID);
if (bRefresh)
{
b.Meta.add("refresh");
}
b.addCol("empty");
// make request
HGrid req = b.toGrid();
try
{
return(call("watchPoll", req));
}
catch (CallErrException e)
{
// any server side error is considered close
watchClose(w, false);
throw e;
}
}
public HGrid watchSub(HClientWatch w, HRef[] ids, bool bChecked)
{
if (ids.Length == 0)
{
throw new ArgumentException("ids are empty", "ids");
}
if (w.Closed)
{
throw new InvalidOperationException("watch is closed");
}
// grid meta
HGridBuilder b = new HGridBuilder();
if (w.ID != null)
{
b.Meta.add("watchId", w.ID);
}
if (w.Lease != null)
{
b.Meta.add("lease", w.Lease);
}
b.Meta.add("watchDis", w.dis());
// grid rows
b.addCol("id");
for (int i = 0; i < ids.Length; ++i)
{
b.addRow(new HVal[] { ids[i] });
}
// make request
HGrid res;
try
{
HGrid req = b.toGrid();
res = call("watchSub", req);
}
catch (CallErrException e)
{
// any server side error is considered close
watchClose(w, false);
throw e;
}
// make sure watch is stored with its watch id
if (w.ID == null)
{
w.ID = res.meta.getStr("watchId");
w.Lease = (HNum)res.meta.get("lease");
m_watches_Renamed.Add(w.ID, w);
}
// if checked, then check it
if (bChecked)
{
if (res.numRows != ids.Length && ids.Length > 0)
{
throw new Exception("unknwon record " + ids[0]);
}
for (int i = 0; i < res.numRows; ++i)
{
if (res.row(i).missing("id"))
{
throw new Exception("unknwon record " + ids[i]);
}
}
}
return(res);
}
