override public void Dispose()
{
base.Dispose();
if (_dataReader != null)
{
_dataReader.Dispose();
}
_dataReader = null;
if (_file != null)
{
_file.Close();
}
_file = null;
}
public ShapeFeatureCursor(IFeatureClass fc, SHPFile file, IQueryFilter filter, IIndexTree tree)
: base((fc != null) ? fc.SpatialReference : null,
(filter != null) ? filter.FeatureSpatialReference : null)
{
base.KnowsFunctions = false;
if (file == null)
{
return;
}
_file = new SHPFile(file);
_filter = filter;
if (filter is ISpatialFilter)
{
IEnvelope env = ((ISpatialFilter)filter).Geometry.Envelope;
if (tree != null)
{
_IDs = tree.FindShapeIds(env);
_IDs.Sort();
}
//_IDs = tree.FindShapeIds(env);
_bounds = new Envelope(env);
_spatialFilter = filter as ISpatialFilter;
_queryGeometry = ((ISpatialFilter)filter).Geometry;
_queryShape = true;
}
else
{
foreach (string fname in filter.SubFields.Split(' '))
{
if (fname == "SHAPE" || fname == "*")
{
_queryShape = true;
break;
}
}
}
if (filter.WhereClause != "" && _filter.SubFields != "*" && !(filter is IRowIDFilter))
{
//StringBuilder sb = new StringBuilder();
//sb.Append("FID");
QueryFilter f = new QueryFilter();
f.SubFields = _filter.SubFields;
foreach (IField field in _file.Fields.ToEnumerable())
{
if (field.name == "FID")
{
continue;
}
if (filter.WhereClause.IndexOf(" " + field.name + " ") != -1 ||
filter.WhereClause.IndexOf("(" + field.name + " ") != -1 ||
filter.WhereClause.IndexOf(" " + field.name + "=") != -1 ||
filter.WhereClause.IndexOf("(" + field.name + "=") != -1 ||
filter.WhereClause.IndexOf(" " + field.name + "<") != -1 ||
filter.WhereClause.IndexOf("(" + field.name + "<") != -1 ||
filter.WhereClause.IndexOf(" " + field.name + ">") != -1 ||
filter.WhereClause.IndexOf("(" + field.name + ">") != -1 ||
filter.WhereClause.IndexOf("[" + field.name + "]") != -1 ||
filter.WhereClause.IndexOf(field.name + " ") == 0 ||
filter.WhereClause.IndexOf(field.name + "=") == 0 ||
filter.WhereClause.IndexOf(field.name + "<") == 0 ||
filter.WhereClause.IndexOf(field.name + ">") == 0
)
{
f.AddField(field.name);
}
}
/*
* _dataReader = _file.DBFDataReader(sb.ToString());
* for (uint i = 1; i <= _file.Entities; i++)
* _dataReader.AddRecord(i);
*
* DataRow [] rows=_dataReader.Table.Select(_filter.WhereClause);
*
* _IDs = new ArrayList();
* foreach (DataRow row in rows)
* {
* uint id=_file.GetIndexFromRecNumber((uint)row["FID"]);
* _IDs.Add((int)id);
* }
* _dataReader.Dispose();
*/
_dataReader = _file.DBFDataReader(f.SubFields.Replace(" ", ",").Replace("DISTINCT(", "").Replace(")", ""));
}
else
{
_dataReader = _file.DBFDataReader(filter.SubFields.Replace(" ", ",").Replace("DISTINCT(", "").Replace(")", ""));
}
if (_filter is IDistinctFilter)
{
_unique = new List <object>();
_uniqueField = _filter.SubFields.Replace("DISTINCT(", "").Replace(")", "");
}
if (_filter is FunctionFilter)
{
}
/*
* if (!(filter is ISpatialFilter))
* {
* DataTable tab = _dataReader.AllRecords;
* tab = null;
* }*/
}
