Add a method to modify CondAttrListCollection

Allow changing the channel number where a given AttributeList may be
found.

Database/AthenaPOOL/AthenaPoolUtilities/AthenaPoolUtilities/CondAttrListCollection.h

@@ -114,6 +114,8 @@ public:
 
     /// channel number for index: (index = 0 to size-1)
     ChanNum              chanNum(unsigned int index) const;
+
+    bool                 fixChanNum(ChanNum oldChan, ChanNum newChan);
     
     /// attribute list for a given channel number
     const AttributeList& attributeList(ChanNum chanNum) const;
@@ -674,6 +676,26 @@ CondAttrListCollection::isSameButMinRange ( const CondAttrListCollection& rhs,
 }
 
     
+inline bool
+    CondAttrListCollection::fixChanNum(const ChanNum oldChan,
+                                       const ChanNum newChan) {
+      auto attrRet = m_attrMap.emplace(newChan, m_attrMap[oldChan]);
+      // if a new element was inserted, erase the old one
+      if (attrRet.second) m_attrMap.erase(oldChan);
+
+      auto iovRet = m_iovMap.emplace(newChan, m_iovMap[oldChan]);
+      // if a new element was inserted, erase the old one
+      if (iovRet.second) m_iovMap.erase(oldChan);
+
+      auto nameRet = m_nameMap.emplace(newChan, m_nameMap[oldChan]);
+      // if a new element was inserted, erase the old one
+      if (nameRet.second) m_nameMap.erase(oldChan);
+
+      return attrRet.first->first == newChan
+          && iovRet.first->first == newChan
+          && nameRet.first->first == newChan;
+    }
+    
     
 
 #endif // DBDATAOBJECTS_CONDATTRLISTCOLLECTION_H

Generators/EvgenProdTools/CMakeLists.txt

@@ -12,11 +12,11 @@ atlas_add_library( EvgenProdToolsLib
                    PUBLIC_HEADERS EvgenProdTools
                    INCLUDE_DIRS ${ROOT_INCLUDE_DIRS} 
                    LINK_LIBRARIES ${ROOT_LIBRARIES} AtlasHepMCLib AtlasHepMCsearchLib AthenaBaseComps TruthHelper GeneratorModulesLib GenInterfacesLib
-                   PRIVATE_LINK_LIBRARIES AthenaKernel EventInfo GaudiKernel TruthUtils )
+                   PRIVATE_LINK_LIBRARIES AthenaKernel EventInfo GaudiKernel TruthUtils IOVDbDataModel AthenaPoolUtilities )
 
 atlas_add_component( EvgenProdTools
                      src/components/*.cxx
-                     LINK_LIBRARIES EvgenProdToolsLib )
+                     LINK_LIBRARIES EvgenProdToolsLib IOVDbDataModel AthenaPoolUtilities )
 
 # Install files from the package:
 atlas_install_python_modules( python/*.py POST_BUILD_CMD ${ATLAS_FLAKE8} )

Generators/EvgenProdTools/EvgenProdTools/CountHepMC.h

@@ -28,6 +28,8 @@ public:
 
 private:
 
+  ServiceHandle< StoreGateSvc > m_metaDataStore{
+    "StoreGateSvc/MetaDataStore", name()};
   int m_nPass;
   int m_nCount;
 

Generators/EvgenProdTools/src/CountHepMC.cxx

@@ -15,6 +15,9 @@
 #include "EventInfo/EventInfo.h"
 #include "EventInfo/EventID.h"
 #include "EventInfo/EventType.h"
+#include "IOVDbDataModel/IOVMetaDataContainer.h"
+#include "IOVDbDataModel/IOVPayloadContainer.h"
+#include "AthenaPoolUtilities/CondAttrListCollection.h"
 #include <cmath>
 #include <cassert>
 
@@ -100,10 +103,12 @@ else{
     // Change the EventID in the eventinfo header
     const EventInfo* pInputEvt(0);
     ATH_MSG_INFO("Set new run number called !!" << m_newRunNumber);
+    unsigned int oldRunNumber = 0;
     if (evtStore()->retrieve(pInputEvt).isSuccess()) {
       assert(pInputEvt);
       EventID* eventID = const_cast<EventID*>(pInputEvt->event_ID());
       ATH_MSG_INFO("git eventid !! " );
+      oldRunNumber = eventID->run_number();
       eventID->set_run_number(m_newRunNumber);
       ATH_MSG_INFO("Set new run number" << m_newRunNumber);
       ATH_MSG_DEBUG("Set new run number in event_ID");
@@ -118,6 +123,65 @@ else{
       ATH_MSG_ERROR("No EventInfo object found");
       return StatusCode::SUCCESS;
     }
+
+    {
+      // change the channel number where /Generation/Parameters are found
+      auto newChannelNumber =
+          static_cast< const CondAttrListCollection::ChanNum >(m_newRunNumber);
+      auto oldChannelNumber = 
+          static_cast< const CondAttrListCollection::ChanNum >(oldRunNumber);
+
+      const char* key = "/Generation/Parameters";
+      const IOVMetaDataContainer * iovContainer = nullptr;
+      if (m_metaDataStore->retrieve(iovContainer, key).isSuccess()
+          && iovContainer) {
+        // get a hold of the payload
+        const IOVPayloadContainer * payloadContainer =
+            iovContainer->payloadContainer();
+
+        // Grab the attribute list
+        for (CondAttrListCollection* collection : *payloadContainer) {
+          for(unsigned int index = 0; index < collection->size(); ++index) {
+            if (collection->chanNum(index) != oldChannelNumber) {
+              ATH_MSG_INFO("Not updating \"" << key << "\" on channel number "
+                           << collection->chanNum(index));
+              continue;
+            }
+
+            if (collection->fixChanNum(oldChannelNumber, newChannelNumber))
+              ATH_MSG_INFO("Updated \"" << key << "\" channel number from "
+                           << oldChannelNumber << " to " << newChannelNumber);
+            else
+              ATH_MSG_ERROR("Channel number update from " << oldChannelNumber
+                            << " to " << newChannelNumber << " on \"" << key
+                            << "\" FAILED");
+          }
+        }
+
+        {
+          // Update the MC channel number in the "/TagInfo"
+          const char* key = "/TagInfo";
+          const IOVMetaDataContainer * iovContainer = nullptr;
+          if (m_metaDataStore->retrieve(iovContainer, key).isSuccess()
+              && iovContainer) {
+            // get a hold of the payload
+            const IOVPayloadContainer * payloadContainer =
+              iovContainer->payloadContainer();
+
+            // Grab the attribute list
+            for (CondAttrListCollection* collection : *payloadContainer) {
+              for (auto pair : *collection) {
+                // pair is a pair of Channel number and AttributeList
+                if (pair.second.exists("mc_channel_number"))
+                  pair.second["mc_channel_number"].setValue(m_newRunNumber);
+              }
+            }
+          }
+        }
+      } else {
+        ATH_MSG_INFO("Could not retrieve \"" << key << "\" from MetaDataStore");
+      }
+    }
   }