=== modified file 'dhis-2/dhis-services/dhis-service-patient/src/main/java/org/hisp/dhis/patientattributevalue/DefaultPatientAttributeValueService.java'
--- dhis-2/dhis-services/dhis-service-patient/src/main/java/org/hisp/dhis/patientattributevalue/DefaultPatientAttributeValueService.java	2010-02-28 03:32:13 +0000
+++ dhis-2/dhis-services/dhis-service-patient/src/main/java/org/hisp/dhis/patientattributevalue/DefaultPatientAttributeValueService.java	2010-03-04 04:56:15 +0000
@@ -100,7 +100,9 @@
 
     public Collection<PatientAttributeValue> getPatientAttributeValues( Collection<Patient> patients )
     {
-        return patientAttributeValueStore.get( patients );
+       if( patients != null && patients.size() > 0 )
+           return patientAttributeValueStore.get( patients );
+       return null;
     }
 
     public void savePatientAttributeValue( PatientAttributeValue patientAttributeValue )