ISvcLocator.h

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00001 // $Header: /tmp/svngaudi/tmp.jEpFh25751/Gaudi/GaudiKernel/GaudiKernel/ISvcLocator.h,v 1.15 2006/12/14 12:55:44 hmd Exp $
00002 #ifndef GAUDIKERNEL_ISVCLOCATOR_H
00003 #define GAUDIKERNEL_ISVCLOCATOR_H 1
00004 
00005 // Include files
00006 #include "GaudiKernel/IInterface.h"
00007 #include "GaudiKernel/ISvcManager.h"
00008 #include "GaudiKernel/TypeNameString.h"
00009 #include "GaudiKernel/SmartIF.h"
00010 #include <string>
00011 #include <list>
00012 
00013 // Forward class declaration
00014 class IService;
00015 
00026 class GAUDI_API ISvcLocator: virtual public IInterface {
00027 public:
00029   DeclareInterfaceID(ISvcLocator,3,0);
00030 
00031 #if !defined(GAUDI_V22_API) || defined(G22_NEW_SVCLOCATOR)
00032 
00036   virtual StatusCode getService( const Gaudi::Utils::TypeNameString& typeName,
00037                                  IService*&  svc, const bool createIf = true) {
00038     SmartIF<IService> &s = service(typeName, createIf);
00039     svc = s.get();
00040     if (svc) {
00041       svc->addRef(); // Needed to maintain the correct reference counting.
00042       return StatusCode::SUCCESS;
00043     }
00044     return StatusCode::FAILURE;
00045   }
00046 
00052   virtual StatusCode getService( const Gaudi::Utils::TypeNameString& typeName,
00053                                  const InterfaceID& iid,
00054                                  IInterface*& pinterface ) {
00055     SmartIF<IService> svc = service(typeName, false);
00056     if (svc.isValid()) {
00057       // Service found. So now get the right interface
00058       return svc->queryInterface(iid, (void**)&pinterface);
00059     }
00060     return StatusCode::FAILURE;
00061   }
00062 
00068   //virtual StatusCode getService( const Gaudi::Utils::TypeNameString& name,
00069   //                               IService*& svc,
00070   //                               bool createIf ) = 0;
00071 #endif
00072 
00074   virtual const std::list<IService*> &getServices() const = 0;
00075 
00077   virtual bool existsService(const std::string& name) const = 0;
00078 
00079 #if !defined(GAUDI_V22_API) || defined(G22_NEW_SVCLOCATOR)
00081   template <class T>
00082   StatusCode service( const Gaudi::Utils::TypeNameString& name, T*& svc, bool createIf = true ) {
00083     if( createIf ) {
00084       IService* s;
00085       StatusCode sc = getService( name, s, true);
00086       if ( !sc.isSuccess() ) return sc;  // Must check if initialization was OK!
00087     }
00088     return getService( name, T::interfaceID(), (IInterface*&)svc );
00089   }
00090 
00092   template <class T>
00093   StatusCode service( const std::string& type, const std::string& name,
00094                       T*& svc, bool createIf = true ) {
00095     return service(type + "/" + name, svc, createIf);
00096   }
00097 #endif
00098 
00100   virtual SmartIF<IService> &service(const Gaudi::Utils::TypeNameString &typeName, const bool createIf = true) = 0;
00101 
00103   template <typename T>
00104   inline SmartIF<T> service(const Gaudi::Utils::TypeNameString &typeName, const bool createIf = true) {
00105     return SmartIF<T>(service(typeName, createIf));
00106   }
00107 
00108 };
00109 
00110 
00111 #endif  // GAUDI_ISVCLOCATOR_H
Gaudi Framework, version v21r7

ISvcLocator.h
