/**
* Constructs a spatial index
*
* @param store
* Feature store whose contents to index
*/
public SimpleSpatialIndex(FeatureStore _store)
{
store = _store;
if (store != null)
{
buildIndex();
}
}
/**
* Constructs a feature cursor
*
* @param oids
* Object IDs of features over which to iterate
* @param store
* Feature store from which to read the Feature data
* @param search_extent
* Search extent that was used to generate the list of OIDs in this
* cursor - this is used to refine the list of Features actually
* returned from the cursor
* @param match_exactly
* True to only return Feature instances that "exactly" match the
* original search criteria. When querying a FeatureStore by spatial
* extent (GeoExtent), the store will actually return a FeatureCursor
* corresponding to all features whose bounding extents intersect the
* search extent; i.e. it does not test down to the shape level. Passing
* true to this parameter will perform shape-level intersection testing
* when using this cursor.
*/
public FeatureCursor(
FeatureOIDList _oids,
FeatureStore _store,
GeoExtent _search_extent,
bool _match_exactly)
{
oids = _oids;
store = _store;
search_extent = _search_extent;
match_exactly = _match_exactly;
prefetch_size = DEFAULT_PREFETCH_SIZE;
at_bof = false;
reset();
}
/**
* Constructs a feature cursor
*
* @param oids
* Object IDs of features over which to iterate
* @param store
* Feature store from which to read the Feature data
* @param search_extent
* Search extent that was used to generate the list of OIDs in this
* cursor - this is used to refine the list of Features actually
* returned from the cursor
* @param match_exactly
* True to only return Feature instances that "exactly" match the
* original search criteria. When querying a FeatureStore by spatial
* extent (GeoExtent), the store will actually return a FeatureCursor
* corresponding to all features whose bounding extents intersect the
* search extent; i.e. it does not test down to the shape level. Passing
* true to this parameter will perform shape-level intersection testing
* when using this cursor.
*/
public FeatureCursor(
FeatureOIDList _oids,
FeatureStore _store,
GeoExtent _search_extent,
bool _match_exactly)
{
oids = _oids;
store = _store;
search_extent = _search_extent;
match_exactly = _match_exactly;
prefetch_size = DEFAULT_PREFETCH_SIZE;
at_bof = false;
reset();
}
/**
* Creates a feature layer by connecting to a feature store.
*
* @param uri
* URI of the feature store to use as the underlying data
* source for this layer.
* @return
* A new feature layer. Caller is responsible for deleting
* the return object.
*/
public FeatureLayer createFeatureLayer(string uri)
{
FeatureLayer result = null;
if (getFeatureStoreFactory() != null)
{
FeatureStore store = getFeatureStoreFactory().connectToFeatureStore(uri);
if (store != null && store.isReady())
{
result = new FeatureLayer(store);
#if TODO
// if the store doesn't provide a spatial reference, try to load one from
// a PRJ file:
if (result != null && result.getSRS() == null)
{
if (osgDB.fileExists(uri)) // make sure it's a file:
{
string prj_file = osgDB.getNameLessExtension(uri) + ".prj";
fstream istream;
istream.open(prj_file.c_str());
if (istream.is_open())
{
istream.seekg(0, std.ios.end);
int length = istream.tellg();
istream.seekg(0, std.ios.beg);
char[] buf = new char[length];
istream.read(buf, length);
istream.close();
string prj = buf;
SpatialReference prj_srs =
Registry.instance().getSRSFactory().createSRSfromWKT(prj);
result.setSRS(prj_srs);
}
}
}
#endif
}
}
return(result);
}
/** * Construct a new R-Tree spatial instance and populate it with * the data in a feature store. * * @param store * Feature store for which to build index */ public RTreeSpatialIndex(FeatureStore store);
/**
* Constructs a new FeatureLayer and builds a spatial index.
*
* @param store
* Feature store from which this layer accesses feature data.
*/
public FeatureLayer(FeatureStore _store)
{
store = _store;
}
/**
* Constructs a new FeatureLayer and builds a spatial index.
*
* @param store
* Feature store from which this layer accesses feature data.
*/
public FeatureLayer(FeatureStore _store)
{
store = _store;
}
/**
* Constructs a spatial index
*
* @param store
* Feature store whose contents to index
*/
public SimpleSpatialIndex(FeatureStore _store)
{
store = _store;
if (store!=null)
buildIndex();
}
/** * Construct a new R-Tree spatial instance and populate it with * the data in a feature store. * * @param store * Feature store for which to build index */ public RTreeSpatialIndex(FeatureStore store);
