private FetClassProperty GetFetClassProperty()
{
try
{
string instanceId = _instanceIdentify.Id.ToString();
string fetclassId = _fetclassIdentify.Id;
Dictionary <string, string> args = new Dictionary <string, string>();
args.Add(HttpCommands.cstArgNameCommand, HttpCommands.cstArgCmdGetFetClassProperty);
args.Add(HttpCommands.cstArgInstanceId, instanceId);
args.Add(HttpCommands.cstArgFetClassId, fetclassId);
string url = HttpCommands.GetCatalogUrlPage(_uri, HttpCommands.cstCatalogPage);
url = HttpCommands.GetCatalogUrl(url, args);
object obj = GetObjectFromHttpStream.GetObject(url);
FetClassProperty pro = obj as FetClassProperty;
if (pro == null)
{
throw new Exception("获取要素类\"" + _name + "\"的属性对象失败。");
}
return(pro);
}
catch (Exception ex)
{
Log.WriterException(ex);
return(null);
}
}
public override void EndRead()
{
try
{
string url = HttpCommands.GetCatalogUrlPage(_uri, HttpCommands.cstCatalogPage);
Dictionary <string, string> args = new Dictionary <string, string>();
args.Add(HttpCommands.cstArgNameCommand, HttpCommands.cstArgCmdEndRead);
args.Add(HttpCommands.cstArgInstanceId, _instanceIdentify.Id.ToString());
args.Add(HttpCommands.cstArgFetClassId, _fetclassIdentify.Id);
url = HttpCommands.GetCatalogUrl(url, args);
object isOK = GetObjectFromHttpStream.GetObject(url);
if (isOK is RequestIsFailed)
{
Log.WriterError("ServerDataSource", "EndRead(" + _instanceIdentify.Name + "," + _fetclassIdentify.Name + ")", (isOK as RequestIsFailed).Msg);
}
}
finally
{
_readIsFinished = true;
}
}
public override IGrid ReadGrid(int gridNo)
{
try
{
Envelope evp = _gridStateIndicator.GetEnvelope(gridNo);
string url = string.Format(_readGridUrl, evp.MinX, evp.MinY, evp.MaxX, evp.MaxY);
object obj = GetObjectFromHttpStream.GetObject(url);
if (obj is Feature[])
{
Feature[] fets = obj as Feature[];
AutoLeveling(fets);
if (fets != null)
{
foreach (Feature f in fets)
{
f.SetFeatureClass(_featureClass);
}
}
return(new Grid(gridNo, evp, fets));
}
else
{
RequestIsFailed error = obj as RequestIsFailed;
if (error != null)
{
Log.WriterError("Read " + _fetclassIdentify.Name + "[" + gridNo.ToString() + "]" + " from " + _instanceIdentify.Name + " failed," + error.Msg);
}
return(null);
}
}
catch (Exception ex)
{
Log.WriterException(ex);
return(null);
}
}
