returns the list of attributes that can be used as sources for this aggregation concode_field_sep Map<String,String> attributeAssociationMap concode_elem_sep EntityId targetEntityId concode_elem_sep Logger logger concode_elem_sep Map<String,Map<EntityId,Double>> sourceValues concode_elem_sep AggregationType aggType concode_elem_sep List<EntityId> sourceEntityList concode_field_sep List<EntityId> getSourceEntities concode_elem_sep ContextElementResponse getAggregate concode_elem_sep void putData concode_elem_sep double aggregate concode_elem_sep boolean isFinite
List < String > function ( ) { if ( attributeAssociationMap == null ) return null ; return new ArrayList < String > ( attributeAssociationMap . keySet ( ) ) ; }