ActiveDB.h

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#ifndef _ActiveDB_h_
#define _ActiveDB_h_

#include <ctype.h>

#include <iostream>

#include "NVcontainer.h"
#include "NSError.h"
#include "GroupInfo.h"

#include "VirtualIterator.h"

class ActiveDB {
      protected:
        ActiveDB();
      public:
        virtual ~ ActiveDB();
        // Used for set
        enum {
                update_only = 0x01
        };

        enum {
                m_active, m_times
        };

        enum {
                F_STORE_READONLY = 0x1,
                F_CLEAR = 0x2
        };

        virtual void clear(void) = 0;
        virtual int is_empty(void) = 0;

        virtual void add(GroupInfo & gi) = 0;
        virtual void set(GroupInfo & gi, int flags = 0) = 0;

        /* get(group,gi)
         * Returns information of the newsgroup >group<.
         * The space for gi must be allocated by the caller.
         */
        virtual int get(const char *group, GroupInfo * gi) = 0;
        virtual int hasgroup(const char *group) = 0;

        virtual void read(std::istream & is, const char *filter,
                          int flags = 0) = 0;
        virtual void write(std::ostream & os, nvtime_t ctime =
                           0, int mode = m_active, const char *filter =
                           NULL) = 0;

        virtual void setmtime(unsigned long tm, int force = 0) = 0;
        virtual void getmtime(unsigned long *tm) = 0;

        virtual Iter < GroupInfo > begin() = 0;
        virtual Iter < GroupInfo > end() = 0;
};

#endif

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