private Boolean inGeometryFilter(FeatureDataRow feature)
{
if (_viewDefinition == null || _viewDefinition.SpatialPredicate == null)
{
return(true);
}
SpatialBinaryExpression spatialQueryExpression = _viewDefinition.SpatialPredicate;
SpatialOperation op = spatialQueryExpression.Op;
GeometryExpression geometryExpression
= spatialQueryExpression.SpatialExpression as GeometryExpression;
ExtentsExpression extentsExpression
= spatialQueryExpression.SpatialExpression as ExtentsExpression;
if (!SpatialExpression.IsNullOrEmpty(geometryExpression))
{
return(SpatialBinaryExpression.IsMatch(op,
spatialQueryExpression.IsSpatialExpressionLeft,
geometryExpression.Geometry,
feature.Geometry));
}
if (!SpatialExpression.IsNullOrEmpty(extentsExpression))
{
return(SpatialBinaryExpression.IsMatch(op,
spatialQueryExpression.IsSpatialExpressionLeft,
extentsExpression.Extents,
feature.Extents));
}
return(true);
}
public IEnumerable <UInt32> ExecuteOidQuery(SpatialBinaryExpression query)
{
if (query == null)
{
throw new ArgumentNullException("query");
}
SpatialExpression spatialExpression = query.SpatialExpression;
if (SpatialExpression.IsNullOrEmpty(spatialExpression))
{
yield break;
}
if (query.Expression == null)
{
throw new ArgumentException("The SpatialQueryExpression must have " +
"a non-null Expression.");
}
ExtentsExpression extentsExpression = spatialExpression as ExtentsExpression;
GeometryExpression geometryExpression = spatialExpression as GeometryExpression;
IExtents filterExtents = extentsExpression != null
? extentsExpression.Extents
: null;
IGeometry filterGeometry = geometryExpression != null
? geometryExpression.Geometry
: null;
Assert.IsTrue(filterExtents != null || filterGeometry != null);
Boolean isLeft = query.IsSpatialExpressionLeft;
SpatialOperation op = query.Op;
LayerExpression layerExpression = query.Expression as LayerExpression;
if (layerExpression != null)
{
for (UInt32 i = 0; i < _geometries.Count; i++)
{
if (isGeometryAtIndexAMatch((Int32)i, op, isLeft, filterGeometry))
{
yield return(i);
}
}
yield break;
}
OidCollectionExpression oidsCollection = query.Expression as OidCollectionExpression;
if (oidsCollection != null)
{
if (oidsCollection.Right == null)
{
throw new ArgumentException("The OidCollectionExpression in the query " +
"has a null collection");
}
IEnumerable oids = oidsCollection.Right.Collection;
if (oids == null)
{
yield break;
}
foreach (Object oid in oids)
{
if (isGeometryAtIndexAMatch((Int32)oid, op, isLeft, filterGeometry))
{
yield return((UInt32)oid);
}
}
yield break;
}
}
