fix: download linked objects in a WFS using "resolvedepth"

Using "resolvedepth" when trying to download data via WFS is now downloading the linked objects.
As the requested hits to a WFS is better to be setup to UNKNOWN_SIZE, so the size comes as well to be always UNKNOWN_SIZE, the code related to hits and size has been removed and the related methods have been changed accordingly.

ING-4128
Closes halestudio#1084

io/plugins/eu.esdihumboldt.hale.io.gml/src/eu/esdihumboldt/hale/io/gml/reader/internal/wfs/WfsBackedGmlInstanceCollection.java

@@ -227,19 +227,19 @@ public WfsBackedGmlInstanceCollection(LocatableInputSupplier<? extends InputStre
 
 		// Use primordial URI and issue "hits" request to check if the WFS will
 		// return anything at all
-		int hits;
-		if (ignoreNumberMatched) {
-			hits = UNKNOWN_SIZE;
-		}
-		else {
-			try {
-				hits = requestHits(primordialUri);
-			} catch (WFSException e) {
-				log.debug(MessageFormat.format(
-						"Failed to perform hits query (REQUESTTYPE=hits): {0}", e.getMessage()), e);
-				hits = UNKNOWN_SIZE;
-			}
-		}
+		int hits = UNKNOWN_SIZE;
+//		if (ignoreNumberMatched) {
+//			hits = UNKNOWN_SIZE;
+//		}
+//		else {
+//			try {
+//				hits = requestHits(primordialUri);
+//			} catch (WFSException e) {
+//				log.debug(MessageFormat.format(
+//						"Failed to perform hits query (REQUESTTYPE=hits): {0}", e.getMessage()), e);
+//				hits = UNKNOWN_SIZE;
+//			}
+//		}
 
 		switch (wfsVersion) {
 		case "1.1.0":
@@ -372,20 +372,20 @@ public Instance getInstance(InstanceReference reference) {
 		}
 	}
 
-	private int requestHits(URI requestUri) throws WFSException {
-		URIBuilder builder = new URIBuilder(requestUri);
-		builder.addParameter("RESULTTYPE", "hits");
-
-		InputStream in;
-		try {
-			in = builder.build().toURL().openStream();
-		} catch (IOException | URISyntaxException e) {
-			throw new WFSException(
-					MessageFormat.format("Unable to execute WFS request: {0}", e.getMessage()), e);
-		}
-
-		return FeatureCollectionHelper.getNumberOfFeatures(in);
-	}
+//	private int requestHits(URI requestUri) throws WFSException {
+//		URIBuilder builder = new URIBuilder(requestUri);
+//		builder.addParameter("RESULTTYPE", "hits");
+//
+//		InputStream in;
+//		try {
+//			in = builder.build().toURL().openStream();
+//		} catch (IOException | URISyntaxException e) {
+//			throw new WFSException(
+//					MessageFormat.format("Unable to execute WFS request: {0}", e.getMessage()), e);
+//		}
+//
+//		return FeatureCollectionHelper.getNumberOfFeatures(in);
+//	}
 
 	private String getMaxFeaturesParameterName(String version) {
 		// XXX Use WFSVersion
@@ -635,4 +635,4 @@ public void skip() {
 
 	}
 
-}
+}