Fix Hashmap to Json casting in updateNodeCandidate method

src/main/java/org/activeeon/morphemic/service/NodeCandidateUtils.java

@@ -3,12 +3,14 @@ package org.activeeon.morphemic.service;
 import org.activeeon.morphemic.infrastructure.deployment.PAConnectorIaasGateway;
 import org.activeeon.morphemic.model.*;
 import org.apache.log4j.Logger;
+import org.codehaus.jackson.map.ObjectMapper;
 import org.json.JSONArray;
 import org.json.JSONObject;
 
 import javax.persistence.EntityManager;
 import javax.persistence.EntityManagerFactory;
 import javax.persistence.Persistence;
+import java.io.IOException;
 import java.math.BigDecimal;
 import java.util.*;
 import java.util.stream.Collectors;
@@ -223,6 +225,16 @@ public class NodeCandidateUtils {
         return nodeCandidate;
     }
 
+    private static JSONObject apply(Object object) {
+        JSONObject myJson = null;
+        try {
+            myJson = new JSONObject(new ObjectMapper().writeValueAsString(object));
+        } catch (IOException e) {
+            LOGGER.error("Error in casting Hashmap to JSON: " + Arrays.toString(e.getStackTrace()));
+        }
+        return myJson;
+    }
+
     public void updateNodeCandidates(List<String> newCloudIds) {
         em.getTransaction().begin();
 
@@ -235,7 +247,7 @@ public class NodeCandidateUtils {
             LOGGER.info("Getting images from Proactive ...");
             JSONArray images = connectorIaasGateway.getImages(paCloud.getDummyInfrastructureName());
             LOGGER.info("Returned images: " + images.toString());
-            List<JSONObject> consolidatedImages = images.toList().parallelStream().map(o -> (JSONObject) o).filter(record -> !blacklistedRegions.contains(record.get("location"))).collect(Collectors.toList());
+            List<JSONObject> consolidatedImages = images.toList().parallelStream().map(NodeCandidateUtils::apply).filter(record -> !blacklistedRegions.contains(record.get("location"))).collect(Collectors.toList());
             LOGGER.info("Consolidated images: " + consolidatedImages.toString());
 
             //TODO: (Optimization) An images per region map structure <region,[image1,image2]> could be the best here.