static public void ReleaseCachedFeatureCollection(ICachedFeatureCollection cachedFeatureColledion)
{
CachedFeatureCollection collection = cachedFeatureColledion as CachedFeatureCollection;
if (collection != null)
{
collection.Released = true;
}
}
private IFeatureCursor GetFeatures(Guid guid, IQueryFilter filter)
{
ICachedFeatureCollection collection = FeatureCache.GetUsableFeatureCollection(guid, filter);
if (collection != null)
{
return(collection.FeatureCursor(filter));
}
else
{
FeatureCache.RemoveFeatureCollection(guid);
collection = FeatureCache.CreateCachedFeatureCollection(guid, filter);
return(new CachingFeatureCursor(collection, this.FeatureCursor(filter)));
}
}
static public void RemoveFeatureCollection(ICachedFeatureCollection collection)
{
Guid guid = new Guid();
bool found = false;
foreach (Guid g in _collections.Keys)
{
if (_collections[g] == collection)
{
guid = g;
found = true;
}
}
if (found)
{
RemoveFeatureCollection(guid);
}
}
public IFeatureCursor GetSelectedFeatures(IDisplay display)
{
ICachedFeatureCollection collection = FeatureCache.GetCachedFeatureCollection(this._selectionGUID);
if (collection == null)
{
return(null);
}
if (display != null)
{
SpatialFilter filter = new SpatialFilter();
filter.SpatialRelation = spatialRelation.SpatialRelationMapEnvelopeIntersects;
filter.Geometry = display.Envelope;
filter.FilterSpatialReference = display.SpatialReference;
return(collection.FeatureCursor(filter));
}
else
{
return(collection.FeatureCursor());
}
}
public CachingFeatureCursor(ICachedFeatureCollection cfCollection, IFeatureCursor cursor)
{
_cursor = cursor;
_cfCollection = cfCollection;
}
