public override void Dispose()
{
base.Dispose();
if (_queryInfo != null)
{
_queryInfo.Dispose();
_queryInfo = null;
}
if (_stream != null)
{
_stream.Free();
_stream = null;
}
if (_connection != null)
{
try
{
_connection.Close();
}
catch { }
_connection = null;
}
}
public SdeFeatureCursor(SdeDataset dataset, ITableClass tc, IQueryFilter filter)
: base((tc is IFeatureClass) && ((IFeatureClass)tc).SpatialReference != null ?
((IFeatureClass)tc).SpatialReference : filter.ContextLayerDefaultSpatialReference,
(filter != null) ? filter.FeatureSpatialReference : null)
{
try
{
if (filter != null && !filter.SubFields.Contains("*"))
{
filter.AddField(tc.IDFieldName, false);
}
filter.fieldPrefix = tc.Name + ".";
filter.fieldPostfix = "";
if (filter is ISpatialFilter &&
(((ISpatialFilter)filter).SpatialRelation != spatialRelation.SpatialRelationMapEnvelopeIntersects))
{
if (tc is IFeatureClass)
{
filter.AddField(((IFeatureClass)tc).ShapeFieldName);
}
_spatialFilter = (ISpatialFilter)filter;
}
Int32 err_no = 0;
_dataset = dataset;
if (_dataset == null)
{
return;
}
//_connection = _dataset.AllocConnection();
_connection = new ArcSdeConnection(dataset.ConnectionString);
if (!_connection.Open(this._dataset))
{
return;
}
_queryInfo = new SdeQueryInfo(_connection, tc, filter);
if (_queryInfo.ErrorMessage != "")
{
Dispose();
return;
}
//if (Wrapper10.SE_stream_create(_connection.SeConnection, ref _stream) != 0)
//{
// Dispose();
// return;
//}
//_connection.ResetStream();
_stream = _connection.CreateStream();
// SE_stream_set_state sollte auch aufgerufen werden (siehe mapsde.c von UMN)
if (Wrapper10.SE_stream_set_state(
_stream.SeStream,
CONST.SE_DEFAULT_STATE_ID,
CONST.SE_DEFAULT_STATE_ID,
CONST.SE_STATE_DIFF_NOCHECK) != 0)
{
Dispose();
return;
}
if ((err_no = Wrapper10.SE_stream_query_with_info(_stream.SeStream, _queryInfo.SeQueryInfo)) != 0)
{
Dispose();
return;
}
if (_queryInfo.IsSpatial)
{
SE_FILTER se_filter = _queryInfo.Filter_Shape;
if ((err_no = Wrapper10.SE_stream_set_spatial_constraints(_stream.SeStream, CONST.SE_SPATIAL_FIRST, false, 1, ref se_filter)) != 0)
{
_errMsg = Wrapper10.GetErrorMsg(_connection.SeConnection, err_no);
Dispose();
return;
}
}
else
{
/*
* SE_FILTER se_filter = _queryInfo.Filter_Id;
* if (Wrapper10.SE_stream_set_spatial_constraints(_stream, CONST.SE_SPATIAL_FIRST, false, 1, ref se_filter) != 0)
* {
* Release();
* return;
* }
* */
}
if (Wrapper10.SE_stream_execute(_stream.SeStream) != 0)
{
Dispose();
return;
}
_queryFields = _queryInfo.QueryFields;
_queryInfo.Dispose();
_queryInfo = null;
}
catch (Exception ex)
{
_errMsg = ex.Message + "\n" + ex.StackTrace;
Dispose();
}
}