Some error handling

src/main/java/no/bioforsk/vips/logic/controller/session/ForecastBean.java

@@ -106,6 +106,10 @@ public class ForecastBean {
     public List<ForecastResult> getForecastResults(Long forecastConfigurationId, Integer latestDays)
     {
         ForecastResult mostRecentForecastResult = this.getMostRecentForecastResult(forecastConfigurationId);
+        if(mostRecentForecastResult == null)
+        {
+            return null;
+        }
         Calendar cal = Calendar.getInstance();
         cal.setTime(mostRecentForecastResult.getResultValidTime());
         cal.add(Calendar.DATE, -latestDays);
@@ -120,7 +124,14 @@ public class ForecastBean {
         q.setParameter("forecastConfigurationId", forecastConfigurationId);
         q.setParameter("timeStart", timeStart);
         q.setParameter("timeEnd", timeEnd);
-        return q.getResultList();
+        try
+        {
+            return q.getResultList();
+        }
+        catch(NoResultException ex)
+        {
+            return null;
+        }
     }
     
     public ForecastResult getMostRecentForecastResult(Long forecastConfigurationId)
@@ -135,7 +146,14 @@ public class ForecastBean {
                 + ");", ForecastResult.class);
         
         q.setParameter("forecastConfigurationId", forecastConfigurationId);
-        return (ForecastResult) q.getSingleResult();
+        try
+        {
+            return (ForecastResult) q.getSingleResult();
+        }
+        catch(NoResultException ex)
+        {
+            return null;
+        }
     }
     
     /**

src/main/java/no/bioforsk/vips/logic/service/LogicService.java

@@ -81,6 +81,10 @@ public class LogicService {
     public Response getForecastResults(@PathParam("forecastConfigurationId") Long forecastConfigurationId)
     {
         List<ForecastResult> results = SessionControllerGetter.getForecastBean().getForecastResults(forecastConfigurationId);
+        if(results == null)
+        {
+            results = new ArrayList<>();
+        }
         return Response.ok().entity(results).build();
     }
     
@@ -93,6 +97,10 @@ public class LogicService {
     )
     {
         List<ForecastResult> results = SessionControllerGetter.getForecastBean().getForecastResults(forecastConfigurationId, latestDays);
+        if(results == null)
+        {
+            results = new ArrayList<>();
+        }
         return Response.ok().entity(results).build();
     }