lib/BerkelyDB/QueueStorage.h

   1 #ifndef berkelydb_queuestorage_h
   2 #define berkelydb_queuestorage_h
   3
   4 #include "Details/prologue.h"
   5 #include "Storage.h"
   6
   7 namespace BerkelyDB
   8 {
   9         class Database;
  10         class Environment;
  11         template < typename DataType >
  12         class QueueStorageOperator;
  13         template < typename DataType >
  14         class QueueStorageConstOperator;
  15         template < typename DataType >
  16         class QueueStorageCursor;
  17
  18         // QueueStorage implemented on top of the Storage class, but this is inefficient
  19         // and should be changed to a non-tree BerkelyDB container.
  20         template < typename DataType >
  21         class QueueStorage : private Storage< std::string, DataType >
  22         {
  23         public:
  24                 typedef QueueStorageCursor< DataType > Cursor; // Defined in QueueStorage-Cursor.h
  25                 typedef QueueStorageConstOperator< DataType > ConstOperator; // Defined in QueueStorage-Operator.h
  26                 typedef QueueStorageOperator< DataType > Operator; // Defined in QueueStorage-Operator.h
  27
  28                 QueueStorage(Environment & env, const std::string & name)
  29                         : Storage< DataType, DataType >(env, name + ".queue")
  30                 { /* no-op */ }
  31
  32                 ~QueueStorage()
  33                 { /* no-op */ }
  34
  35                 using Storage::getEnvironment;
  36         };
  37 }
  38
  39 #endif