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#ifndef CAFFE_UTIL_DB_HPP
#define CAFFE_UTIL_DB_HPP
#include <string>
#include "caffe/common.hpp"
#include "caffe/proto/caffe.pb.h"
namespace caffe { namespace db {
enum Mode { READ, WRITE, NEW };
class Cursor {
public:
Cursor() { }
virtual ~Cursor() { }
virtual void SeekToFirst() = 0;
virtual void Next() = 0;
virtual string key() = 0;
virtual string value() = 0;
virtual bool valid() = 0;
DISABLE_COPY_AND_ASSIGN(Cursor);
};
class Transaction {
public:
Transaction() { }
virtual ~Transaction() { }
virtual void Put(const string& key, const string& value) = 0;
virtual void Commit() = 0;
DISABLE_COPY_AND_ASSIGN(Transaction);
};
class DB {
public:
DB() { }
virtual ~DB() { }
virtual void Open(const string& source, Mode mode) = 0;
virtual void Close() = 0;
virtual Cursor* NewCursor() = 0;
virtual Transaction* NewTransaction() = 0;
DISABLE_COPY_AND_ASSIGN(DB);
};
DB* GetDB(DataParameter::DB backend);
DB* GetDB(const string& backend);
} // namespace db
} // namespace caffe
#endif // CAFFE_UTIL_DB_HPP
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