improve memoried value with infinity and nan value. Improve the no cache...

improve memoried value with infinity and nan value. Improve the no cache gesture for grouped readspectrum

AttributeCombiner.cpp

@@ -563,9 +563,18 @@ void AttributeCombiner::add_dynamic_attributes()
                 stringstream ss;
 
                 for (int i = 0; i < size; i++) {
-                    ss.clear();
-                    ss << splited[i];
-                    ss >> item->refData[i];
+                    tolower(splited[i]);
+                    if( splited[i] == "nan"){
+                        item->refData[i] = NAN;
+                    }else if( splited[i] == "inf" ){
+                        item->refData[i] = INFINITY;
+                    }else if( splited[i] == "-inf" ){
+                        item->refData[i] = -1*INFINITY;
+                    }else{
+                        ss.clear();
+                        ss << splited[i];
+                        ss >> item->refData[i];
+                    }
                 }
                 this->get_device_attr()->get_w_attr_by_name(name.c_str()).set_write_value(item->refData, size);
 
@@ -1185,13 +1194,12 @@ void AttributeCombiner::add_dynamic_commands()
     void AttributeCombiner::READSPECTRUM(Tango::Attribute &attr, ATTITEM *item, Tango::GroupAttrReplyList arl[]) {
 
         // Read spectrum attribute and combime them to multiple spectrum
-        Tango::DevULong length;
+        Tango::DevLong length;
 
         int nbAtt = (int) item->attNames.size();
         int nbDev = deviceGroup->get_size();
         int size = nbDev * nbAtt;
 
-
         if (isNumber(item->lengthAttName))
             length = atol(item->lengthAttName.c_str());
         else
@@ -1301,12 +1309,13 @@ void AttributeCombiner::add_dynamic_commands()
             return;
         }
 
+        if(!item->isSpectrum) {
+            bool needCacheUpdate = (item->lastUpdate + refreshTime) < timeMS() || item->cacheData == nullptr;
 
-        bool needCacheUpdate = (item->lastUpdate + refreshTime) < timeMS() || item->cacheData == nullptr;
-
-        if (!needCacheUpdate) {
-            setValueGoodCacheType(attr, item);
-            return;
+            if (!needCacheUpdate) {
+                setValueGoodCacheType(attr, item);
+                return;
+            }
         }
 
         Tango::GroupAttrReplyList arl[MAXATTRIBUTE];