Handle empty name search use case in GermService, add mother/father warn logs

Author: jloux-brapi

src/main/java/org/brapi/test/BrAPITestServer/service/germ/GermplasmService.java

@@ -772,7 +772,13 @@ private void updateSynonymEntities(List<GermplasmNewRequestSynonyms> synonyms, G
 	}
 
 	public List<GermplasmEntity> findByNames(List<String> germplasmNames) {
-		return germplasmRepository.findByGermplasmNameIn(germplasmNames);
+		List<GermplasmEntity> foundGerms = new ArrayList<>();
+
+		if (!germplasmNames.isEmpty()) {
+			foundGerms = germplasmRepository.findByGermplasmNameIn(germplasmNames);
+		}
+
+		return foundGerms;
 	}
 
 	public List<GermplasmEntity> findByIds(List<String> germplasmDbIds)

src/main/java/org/brapi/test/BrAPITestServer/service/germ/PedigreeService.java

@@ -827,8 +827,17 @@ public List<PedigreeNode> convertFromGermplasmToPedigreeBatchUsingNames(List<Ger
 		}
 
 		List<GermplasmEntity> motherGerms = germplasmService.findByNames(new ArrayList<>(germsByPedigreeMother.values()));
+
+		if (motherGerms.isEmpty() && !germsByPedigreeMother.isEmpty()) {
+			log.warn("Could not find any germplasms looking up with mother names {}", germsByPedigreeMother.values());
+		}
+
 		List<GermplasmEntity> fatherGerms = germplasmService.findByNames(new ArrayList<>(germsByPedigreeFather.values()));
 
+		if (fatherGerms.isEmpty() && !germsByPedigreeFather.isEmpty()) {
+			log.warn("Could not find any germplasms looking up with father names {}", germsByPedigreeFather.values());
+		}
+
 		for (Germplasm germplasm : germplasms) {
 			GermplasmEntity motherGerm = null;
 			GermplasmEntity fatherGerm = null;