private static void filterSelected(ILayer layer, IMapView2D view, IExtents worldBounds)
{
if (layer == null)
{
return;
}
FeatureLayer filterLayer = layer as FeatureLayer;
if (filterLayer != null)
{
if (layer.Enabled &&
filterLayer.AreFeaturesSelectable &&
layer.IsVisibleWhen(isInView(view.WorldWidth)))
{
SpatialBinaryExpression spatialExpression
= SpatialBinaryExpression.Intersects(new FeaturesCollectionExpression(filterLayer.Features),
new ExtentsExpression(worldBounds));
filterLayer.SelectedFilter = filterLayer.SelectedFilter == null
? new FeatureQueryExpression(new AllAttributesExpression(), spatialExpression, null)
: new FeatureQueryExpression(filterLayer.SelectedFilter, spatialExpression);
}
}
IEnumerable <ILayer> layers = layer as IEnumerable <ILayer>;
if (layers != null)
{
foreach (ILayer child in layers)
{
filterSelected(child, view, worldBounds);
}
}
}
public void ChangeViewSpatialFilterTriggersNotification()
{
FeatureProvider data = DataSourceHelper.CreateFeatureDatasource(_factories.GeoFactory);
FeatureDataTable table = new FeatureDataTable(_factories.GeoFactory);
FeatureQueryExpression query = FeatureQueryExpression.Intersects(data.GetExtents());
IFeatureDataReader reader = data.ExecuteFeatureQuery(query);
table.Load(reader, LoadOption.OverwriteChanges, null);
FeatureDataView view = new FeatureDataView(table);
Boolean resetNotificationOccured = false;
view.ListChanged += delegate(Object sender, ListChangedEventArgs e)
{
if (e.ListChangedType == ListChangedType.Reset)
{
resetNotificationOccured = true;
}
};
Assert.False(resetNotificationOccured);
IExtents queryExtents = _factories.GeoFactory.CreateExtents2D(0, 0, 10, 10);
SpatialBinaryExpression expression = SpatialBinaryExpression.Intersects(queryExtents);
view.SpatialFilter = expression;
Assert.True(resetNotificationOccured);
}
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 void ChangeViewSpatialFilterReturnsOnlyFilteredRows()
{
FeatureProvider data = DataSourceHelper.CreateFeatureDatasource(_factories.GeoFactory);
FeatureDataTable table = new FeatureDataTable(_factories.GeoFactory);
FeatureQueryExpression query = FeatureQueryExpression.Intersects(data.GetExtents());
IFeatureDataReader reader = data.ExecuteFeatureQuery(query);
table.Load(reader);
IGeometry queryExtents = _factories.GeoFactory.CreateExtents2D(0, 0, 10, 10).ToGeometry();
List <FeatureDataRow> expectedRows = new List <FeatureDataRow>();
foreach (FeatureDataRow row in table)
{
IGeometry g = row.Geometry;
if (queryExtents.Intersects(g))
{
expectedRows.Add(row);
}
}
FeatureDataView view = new FeatureDataView(table);
SpatialBinaryExpression expression = SpatialBinaryExpression.Intersects(queryExtents);
view.SpatialFilter = expression;
Assert.Equal(expectedRows.Count, view.Count);
}
private void queueableBeginQuery(Object asyncResult)
{
AsyncResult <IFeatureDataReader> typedAsyncResult = asyncResult as AsyncResult <IFeatureDataReader>;
Assert.IsNotNull(typedAsyncResult);
FeatureQueryExpression query = typedAsyncResult.AsyncState as FeatureQueryExpression;
if (query == null)
{
SpatialBinaryExpression spatialBinaryExpression
= typedAsyncResult.AsyncState as SpatialBinaryExpression;
if (spatialBinaryExpression != null)
{
query = new FeatureQueryExpression(new AllAttributesExpression(),
spatialBinaryExpression, query.Sort);
}
}
try
{
typedAsyncResult.SetComplete(InnerFeatureProvider.ExecuteFeatureQuery(query), false);
}
catch (Exception terminatingException)
{
typedAsyncResult.SetComplete(false, terminatingException);
}
}
public IEnumerable <TOid> ExecuteOidQuery(SpatialBinaryExpression query)
{
foreach (IFeatureDataRecord fdr in
ExecuteFeatureDataReader(
PrepareSelectCommand(
new FeatureQueryExpression(new AttributesProjectionExpression(new[] { OidColumn }),
(AttributeBinaryExpression)null, query))))
{
yield return((TOid)fdr.GetOid());
}
}
public void LoadIntersectingLayerData(IGeometry region)
{
if (region == null)
{
throw new ArgumentNullException("region");
}
SpatialBinaryExpression exp = new SpatialBinaryExpression(new GeometryExpression(region),
SpatialOperation.Intersects,
new LayerExpression(this));
QueryExpression query = GetQueryFromSpatialBinaryExpression(exp);
LoadLayerData(query);
}
public void SettingGeometryFilterToIdenticalGeometryDoesntChangeFilterObject()
{
FeatureProvider data = DataSourceHelper.CreateFeatureDatasource(_factories.GeoFactory);
FeatureDataTable table = new FeatureDataTable(_factories.GeoFactory);
FeatureQueryExpression query = FeatureQueryExpression.Intersects(data.GetExtents());
IFeatureDataReader reader = data.ExecuteFeatureQuery(query);
table.Load(reader, LoadOption.OverwriteChanges, null);
IGeometry filter = _factories.GeoFactory.CreateExtents2D(0, 0, 10, 10).ToGeometry();
FeatureDataView view = new FeatureDataView(table, filter, "", DataViewRowState.CurrentRows);
IGeometry filterCopy = filter.Clone();
Assert.NotSame(filter, filterCopy);
Assert.Equal(filter, filterCopy);
SpatialBinaryExpression expression = SpatialBinaryExpression.Intersects(filterCopy);
view.SpatialFilter = expression;
Assert.NotSame(expression, view.SpatialFilter);
}
protected virtual void VisitSpatialBinaryExpression(StringBuilder builder, SpatialBinaryExpression exp)
{
if (exp == null)
{
return;
}
if (exp.SpatialExpression is ExtentsExpression)
{
WriteSpatialExtentsExpressionSql(builder, exp.Op, (exp.SpatialExpression).Extents);
}
else if (exp.SpatialExpression is GeometryExpression)
{
WriteSpatialGeometryExpressionSql(builder, exp.Op, ((GeometryExpression)exp.SpatialExpression).Geometry);
}
else
{
throw new NotImplementedException(string.Format("{0} is not implemented", exp.GetType()));
}
}
private FeatureQueryExpression transformQuery(FeatureQueryExpression query)
{
SpatialBinaryExpression spatial = query.SpatialPredicate;
ICoordinateSystem querySpatialReference = spatial.SpatialExpression.SpatialReference;
if (querySpatialReference.EqualParams(OriginalSpatialReference))
{
return(query);
}
//if (querySpatialReference != OriginalSpatialReference)
//{
// throw new InvalidOperationException("The query's spatial reference doesn't match the provider's.");
//}
GeometryExpression geoExpression = spatial.SpatialExpression as GeometryExpression;
if (geoExpression != null)
{
IGeometry transformed = CoordinateTransformation.InverseTransform(geoExpression.Geometry,
GeometryFactory);
geoExpression = new GeometryExpression(transformed);
spatial = spatial.IsSpatialExpressionLeft
? new SpatialBinaryExpression(geoExpression, spatial.Op, spatial.Expression)
: new SpatialBinaryExpression(spatial.Expression, spatial.Op, geoExpression);
}
else
{
IExtents transformed = CoordinateTransformation.InverseTransform(spatial.SpatialExpression.Extents,
GeometryFactory);
ExtentsExpression extentsExpression = new ExtentsExpression(transformed);
spatial = spatial.IsSpatialExpressionLeft
? new SpatialBinaryExpression(extentsExpression, spatial.Op, spatial.Expression)
: new SpatialBinaryExpression(spatial.Expression, spatial.Op, extentsExpression);
}
query = new FeatureQueryExpression(query, spatial);
return(query);
}
public void SettingViewFilterToIncludeRowsNotPresentInTableCausesFeaturesRequestNotification()
{
FeatureProvider data = DataSourceHelper.CreateFeatureDatasource(_factories.GeoFactory);
FeatureDataTable table = new FeatureDataTable(_factories.GeoFactory);
Boolean featuresRequested = false;
//table.FeaturesNotFound += delegate { featuresRequested = true; };
FeatureDataView view = new FeatureDataView(table);
IExtents otherHalfBounds = data.GetExtents();
otherHalfBounds.TranslateRelativeToWidth(0.5, 0.5);
otherHalfBounds.Scale(0.5);
Assert.False(featuresRequested);
SpatialBinaryExpression expression = SpatialBinaryExpression.Intersects(otherHalfBounds);
view.SpatialFilter = expression;
Assert.True(featuresRequested);
}
public void SettingSpatialPredicateOfFilterChangesViewToMatchFilter()
{
FeatureDataTable <Guid> table;
FeatureDataView view;
createDataViewOnNewTable(out view, out table, false);
Assert.Equal(table.Rows.Count, view.Count);
view.SpatialFilter = SpatialBinaryExpression.Intersects(table.Extents);
Assert.Equal(table.Rows.Count, view.Count);
view.SpatialFilter = new SpatialBinaryExpression(new ThisExpression(),
SpatialOperation.Disjoint,
new ExtentsExpression(table.Extents));
Assert.Equal(0, view.Count);
view.SpatialFilter = SpatialBinaryExpression.Intersects(_factories.GeoFactory.CreatePoint2D(0, 0));
Assert.Equal(1, view.Count);
}
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;
}
}
protected override QueryExpression GetQueryFromSpatialBinaryExpression(SpatialBinaryExpression exp)
{
return new RasterQueryExpression(exp);
}
protected override QueryExpression GetQueryFromSpatialBinaryExpression(SpatialBinaryExpression exp)
{
return(new RasterQueryExpression(exp));
}
protected abstract QueryExpression GetQueryFromSpatialBinaryExpression(SpatialBinaryExpression exp);
public IEnumerable <Guid> ExecuteOidQuery(SpatialBinaryExpression query)
{
throw new NotImplementedException();
}
public void VariousFilteringCombinationTestSequence()
{
// this horrendous sequence is what I had time alloted for
// takes some better setup to factor into tests that test 1 thing
FeatureDataTable <Guid> table;
FeatureDataView view;
createDataViewOnNewTable(out view, out table, false);
Assert.Equal(table.Rows.Count, view.Count);
SpatialBinaryExpression spatialFilter =
SpatialBinaryExpression.Intersects(_factories.GeoFactory.WktReader.Read("POLYGON ((19 19, 21 19, 20 21, 19 19))"));
// test basic spatial filter
view.SpatialFilter = spatialFilter;
Assert.Equal(3, view.Count);
// setup for combination tests
List <Guid> oidsInSpatialFilter = new List <Guid>(3);
foreach (FeatureDataRow row in (IEnumerable <FeatureDataRow>)view)
{
oidsInSpatialFilter.Add((Guid)row.GetOid());
}
List <Guid> oidsNotInSpatialFilter = new List <Guid>(table.Rows.Count - 3);
foreach (FeatureDataRow <Guid> row in table)
{
if (!oidsNotInSpatialFilter.Contains(row.Id))
{
oidsNotInSpatialFilter.Add(row.Id);
}
}
List <Guid> twoOidsFromEachList = new List <Guid>(4);
twoOidsFromEachList.AddRange(oidFilterSource(oidsInSpatialFilter, 2));
twoOidsFromEachList.AddRange(oidFilterSource(oidsNotInSpatialFilter, 2));
// test spatial filter and oid filter
OidCollectionExpression spanningOids = new OidCollectionExpression(twoOidsFromEachList);
view.OidFilter = spanningOids;
Assert.Equal(2, view.Count);
// test clearing spatial component
view.SpatialFilter = null;
Assert.Equal(4, view.Count);
// test inverting oid filter
view.IsViewDefinitionExclusive = true;
Assert.Equal(table.Rows.Count - 4, view.Count);
// test both components with inversion
view.SpatialFilter = spatialFilter;
Assert.Equal(table.Rows.Count - 2, view.Count);
// test clearing OidFilter
view.OidFilter = null;
Assert.Equal(table.Rows.Count - 3, view.Count);
// test clearing inversion
view.IsViewDefinitionExclusive = false;
Assert.Equal(3, view.Count);
// test clearing everything
view.SpatialFilter = null;
Assert.Equal(table.Rows.Count, view.Count);
}
private Boolean isGeometryAtIndexAMatch(Int32 index, SpatialOperation op, Boolean isLeft, IGeometry filterGeometry)
{
IGeometry current = _geometries[index];
return(SpatialBinaryExpression.IsMatch(op, isLeft, filterGeometry, current));
}
protected override QueryExpression GetQueryFromSpatialBinaryExpression(SpatialBinaryExpression exp)
{
throw new NotSupportedException("Query type should determined by individual layers in group.");
}
