configmgr/source/api2/objectregistry.hxx

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  30
  31 #ifndef CONFIGMGR_API_OBJECTREGISTRY_HXX_
  32 #define CONFIGMGR_API_OBJECTREGISTRY_HXX_
  33
  34 #include "noderef.hxx"
  35
  36 #include <osl/mutex.hxx>
  37 #include <vos/refernce.hxx>
  38
  39 #include <hash_map>
  40 #include "tracer.hxx"
  41
  42 namespace configmgr
  43 {
  44     namespace configapi
  45     {
  46
  47         class NodeElement;
  48
  49         class ObjectRegistry : public vos::OReference
  50         {
  51         public:
  52             static NodeElement* notFound() { return 0; }
  53
  54             struct KeyHash
  55             {
  56                 size_t operator() (const configuration::NodeID& rKey) const {return rKey.hashCode();}
  57             };
  58             struct KeyEq
  59             {
  60                 bool operator() (const configuration::NodeID& lhs,const configuration::NodeID& rhs) const {return lhs == rhs;}
  61             };
  62             typedef std::hash_map<configuration::NodeID,NodeElement*,KeyHash, KeyEq> ObjectMap;
  63         public:
  64             ObjectRegistry() {}
  65             ~ObjectRegistry();
  66
  67             NodeElement*        findElement(configuration::NodeID const& aNode) const
  68             {
  69                 ObjectMap::const_iterator aFound = m_aMap.find(aNode);
  70
  71                 return (aFound != m_aMap.end()) ? aFound->second : notFound();
  72             }
  73             void registerElement(configuration::NodeID const& aNode, NodeElement* aElement)
  74             {
  75                 OSL_ENSURE(m_aMap.find(aNode) == m_aMap.end(), "ERROR: Node is already registered");
  76
  77                 m_aMap[aNode] = aElement;
  78             }
  79             void revokeElement(configuration::NodeID const& aNode, NodeElement* aElement)
  80             {
  81                 ObjectMap::iterator aFound = m_aMap.find(aNode);
  82
  83                 if (aFound != m_aMap.end())
  84                 {
  85                     OSL_ENSURE(aFound->second == aElement,"Found unexpected element in map");
  86
  87                     if (aFound->second == aElement)
  88                         m_aMap.erase(aFound);
  89                 }
  90             }
  91         private:
  92             ObjectMap m_aMap;
  93         };
  94 //-----------------------------------------------------------------------------
  95     }
  96 }
  97
  98 #endif // CONFIGMGR_API_FACTORY_HXX_