private void HandGetInstanceList(HttpContext context)
{
IVectorMapServerEnvironment env = VectorMapServerEnironment.GetInstance(_cnfgFile);
if (env != null)
{
InstanceIdentify[] ids = env.GetAllServerInstances();
WriteObjectToResponseStream(ids as object, context);
}
}
private void HandGetFetClassProperty(HttpContext context, string instanceId, string fetclassId)
{
IVectorMapServerEnvironment env = VectorMapServerEnironment.GetInstance(_cnfgFile);
if (env != null)
{
FetClassProperty pro = env.GetFetClassProperty(int.Parse(instanceId), fetclassId);
WriteObjectToResponseStream(pro, context);
}
}
private void HandReadGrid(HttpContext context, HttpRequest req)
{
string instanceId = req.Params[HttpCommands.cstArgInstanceId];
string fetclassId = req.Params[HttpCommands.cstArgFetClassId];
double minx = double.Parse(req.Params[HttpCommands.cstArgMinX]);
double maxx = double.Parse(req.Params[HttpCommands.cstArgMaxX]);
double miny = double.Parse(req.Params[HttpCommands.cstArgMinY]);
double maxy = double.Parse(req.Params[HttpCommands.cstArgMaxY]);
IVectorMapServerEnvironment env = VectorMapServerEnironment.GetInstance(_cnfgFile);
if (env != null)
{
Feature[] features = env.ReadFeatures(int.Parse(instanceId), fetclassId, new Envelope(minx, miny, maxx, maxy));
if (features == null)
{
features = new Feature[] { }
}
;
WriteObjectToResponseStream(features, context);
}
}
private void HandGetCatalogForInstance(HttpContext context, string instanceId)
{
if (instanceId == null)
{
throw new Exception(HttpCommands.cstErrorArgInstanceIdIsMissing);
}
int id = -1;
if (!int.TryParse(instanceId, out id))
{
throw new Exception(string.Format(HttpCommands.cstErrorInstanceIsNotExisted, instanceId));
}
IVectorMapServerEnvironment env = VectorMapServerEnironment.GetInstance(_cnfgFile);
if (env != null)
{
FetDatasetIdentify[] fetdsIds = null;
FetClassIdentify[] fetcIds = null;
env.GetCatalogsByInstanceId(id, out fetdsIds, out fetcIds);
object[] args = new object[] { fetdsIds, fetcIds };
WriteObjectToResponseStream(args as object, context);
}
}
private void HandEndRead(HttpContext context, HttpRequest req)
{
string instanceId = req.Params[HttpCommands.cstArgInstanceId];
string fetclassId = req.Params[HttpCommands.cstArgFetClassId];
IVectorMapServerEnvironment env = VectorMapServerEnironment.GetInstance(_cnfgFile);
if (env != null)
{
try
{
env.BeginRead(int.Parse(instanceId), fetclassId);
WriteObjectToResponseStream(new RequestIsOK(), context);
}
catch (Exception ex)
{
Log.WriterException(ex);
WriteObjectToResponseStream(new RequestIsFailed("尝试结束按网格读取要素失败。"), context);
}
}
else
{
WriteObjectToResponseStream(new RequestIsFailed("获取IVectorMapServerEnvironment失败。"), context);
}
}