mirna api speeded up when asking for empty query

service/src/main/java/lcsb/mapviewer/services/search/db/mirna/MiRNAService.java

@@ -114,11 +114,13 @@ public class MiRNAService implements IMiRNAService {
 
 	@Override
 	public MiRNAView getByName(String name, DbSearchCriteria searchCriteria) {
+		if ("".equals(name)) {
+			return null;
+		}
 		try {
 			List<String> names = new ArrayList<>();
 			names.add(name);
-			List<MiRNA> miRNAs;
-			miRNAs = miRNAParser.getMiRnasByNames(names);
+			List<MiRNA> miRNAs = miRNAParser.getMiRnasByNames(names);
 			if (miRNAs.size() > 0) {
 				return miRNAViewFactory.create(miRNAs.get(0), searchCriteria.getModel(), searchCriteria.getColorSet());
 			} else {