/// <summary>
/// 判断过滤器对象是否为Null或空对象
/// </summary>
/// <param name="filter">过滤器</param>
/// <returns></returns>
public static bool IsObjectEmpty(IQueryFilter filter)
{
if (filter == null)
{
return(true);
}
if (!FilterHelper.HasNotEmptyElement(filter.GetType().GetProperties().Select(p => p.GetValue(filter)).ToArray()))
{
return(true);
}
return(false);
}
public bool UsableWith(IQueryFilter filter)
{
if (_filter == null || filter == null)
{
return(false);
}
// Type überprüfen
if (_filter.GetType() != filter.GetType())
{
return(false);
}
#region WhereClause
if (_filter.WhereClause != filter.WhereClause)
{
return(false);
}
#endregion
#region Subfields
if (_filter.SubFields != "*")
{
if (filter.SubFields == "*")
{
return(false);
}
string[] subFields_o = _filter.SubFields.Split(' ');
string[] subFields_n = filter.SubFields.Split(' ');
foreach (string fn in subFields_n)
{
string shortNameN = Field.shortName(fn);
bool found = false;
foreach (string fo in subFields_o)
{
if (Field.shortName(fo) == shortNameN)
{
found = true;
break;
}
}
if (!found)
{
return(false);
}
}
}
#endregion
#region Geometry Envelope
if (_filter is ISpatialFilter && filter is ISpatialFilter)
{
IGeometry geomN = ((ISpatialFilter)filter).Geometry;
IGeometry geomO = ((ISpatialFilter)_filter).Geometry;
if (geomN == null || geomO == null)
{
return(false);
}
if (((ISpatialFilter)_filter).SpatialRelation == spatialRelation.SpatialRelationMapEnvelopeIntersects &&
((ISpatialFilter)filter).SpatialRelation == spatialRelation.SpatialRelationMapEnvelopeIntersects)
{
return(geomO.Envelope.Contains(geomN.Envelope));
}
else
{
return(SpatialAlgorithms.Algorithm.Contains(geomO, geomN));
}
}
#endregion
return(true);
}
