Import Geant4 1.0.0 source tree

examples/extended/persistency/PersistentEx01/readDB/readDB.cpp

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+#include "HepODBMS/clustering/HepDbApplication.h"
+
+#include "G4PEvent.hh"
+#include "G4PPrimaryVertex.hh"
+#include "G4PPrimaryParticle.hh"
+#include "G4PHCofThisEvent.hh"
+#include "G4PVHitsCollection.hh"
+
+class dbAccessApp : public HepDbApplication {
+  // Application inherits session control from HepDbApplication
+public:
+  // this application implements just one method: run the 
+  dbAccessApp(const char *name) : HepDbApplication(name)
+  {};
+  
+  int run()
+  {
+    // print an 
+    message("about to initialise the db connection");
+    Init();        // initialise the db session
+    message("starting a read transaction");
+    startRead(); // start a read transaction
+
+    HepDatabaseRef  myDb = db("Events");
+
+    // if the database ref is not valid:
+    // - print a message
+    // - exit the application with an error code 
+    if (myDb == 0)
+      fatal("could not find Events DB");
+    
+    // locates Events container in this database
+    HepContainerRef cont = container("EventContainer"); 
+    if (cont == 0 )
+      fatal("could not find Events Container");
+
+    // initialize iterator for G4PEvent in "Events" Container
+    ooItr(G4PEvent) pevent_iterator;
+    pevent_iterator.scan(cont);
+
+    // Loop for all G4PEvent in the "EventContainer"
+
+    while (pevent_iterator.next())
+    {
+      // access this G4PEvent
+      int evt_id = pevent_iterator->GetEventID();
+      int n_pvertex = pevent_iterator->GetNumberOfPrimaryVertex();
+
+      cout << endl << "Reading event #" << evt_id << ":" << endl;
+      cout << "  No. of primary vertex: " << n_pvertex << endl;
+
+      // Loop for all primary vertex in this event
+      for ( int i = 0; i < n_pvertex; i++ )
+      {
+        HepRef(G4PPrimaryVertex) pvertex = 
+                             pevent_iterator->GetPrimaryVertex(i);
+        cout << "    ObjectID of the primary vertex: "
+             << pvertex.sprint() << endl;
+        cout << "    No. of particle in the primary vertex: "
+             << pvertex->GetNumberOfParticle() << endl;
+
+        for ( int j = 0; j < pvertex->GetNumberOfParticle() ; j++ )
+        {
+           HepRef(G4PPrimaryParticle) particle = pvertex->GetPrimary(j);
+           cout << "      PDGcode: " << particle->GetPDGcode()
+                << "      Px = " << particle->GetPx()
+                << "      Py = " << particle->GetPy()
+                << "      Pz = " << particle->GetPz() << endl;
+        }
+      }
+
+      // HitCollections of this event
+      const HepRef(G4PHCofThisEvent) hcte = pevent_iterator->GetHCofThisEvent();
+      if( hcte != 0 )
+      {
+        cout << "  ObjectID of the Hit Collections: " << hcte.sprint() << endl;
+
+        // Capacity of the Hit Collections VArray
+      //  G4int numHC = hcte->GetCapacity();
+
+        // Actual number of Hit Collections in this event
+        G4int numHCact = hcte->GetNumberOfCollections();
+
+        cout << "  No. of the Hit Collections: " << numHCact << endl;
+        for( G4int i = 0; i<numHCact; i++)
+        {
+          const HepRef(G4PVHitsCollection) aHC = hcte->GetHC(i);
+          if( aHC != 0 )
+          {
+            cout << "    Hit Collection[" << i << "]:  Name: "
+                 << aHC->GetName();
+            cout << "     Sensitive Detector: " << aHC->GetSDname() << endl;
+          }
+        }
+      }
+      else
+      { cout << "  No Hit Collections for this event." << endl; }
+    }
+
+    message("End of loop over events.");
+
+    // finish this read transaction and return
+    commit();
+    return 0;
+  }
+  
+};
+
+
+int main(int argc, const char *argv[])
+{
+  dbAccessApp myApp(argv[0]);  // create an application object
+  
+  return myApp.run();    // call it's run method
+}
+
+