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// Copyright (c) 2009-2010 Satoshi Nakamoto
// Copyright (c) 2009-2012 The Bitcoin developers
// Distributed under the MIT/X11 software license, see the accompanying
// file COPYING or http://www.opensource.org/licenses/mit-license.php.
#ifndef BITCOIN_TXDB_BDB_H
#define BITCOIN_TXDB_BDB_H
#include "db.h"
/** Access to the transaction database (coins.dat) */
class CCoinsDB : public CDB
{
public:
CCoinsDB() : CDB("coins.dat", "cr+") { }
private:
CCoinsDB(const CCoinsDB&);
void operator=(const CCoinsDB&);
public:
bool ReadCoins(uint256 hash, CCoins &coins);
bool WriteCoins(uint256 hash, const CCoins& coins);
bool HaveCoins(uint256 hash);
bool ReadHashBestChain(uint256& hashBestChain);
bool WriteHashBestChain(uint256 hashBestChain);
};
/** CCoinsView backed by a CCoinsDB */
class CCoinsViewDB : public CCoinsView
{
protected:
CCoinsDB db;
public:
CCoinsViewDB();
bool GetCoins(uint256 txid, CCoins &coins);
bool SetCoins(uint256 txid, const CCoins &coins);
bool HaveCoins(uint256 txid);
CBlockIndex *GetBestBlock();
bool SetBestBlock(CBlockIndex *pindex);
bool BatchWrite(const std::map<uint256, CCoins> &mapCoins, CBlockIndex *pindex);
};
/** Access to the block database (blktree.dat) */
class CBlockTreeDB : public CDB
{
public:
CBlockTreeDB() : CDB("blktree.dat", "cr+") { }
private:
CBlockTreeDB(const CBlockTreeDB&);
void operator=(const CBlockTreeDB&);
public:
bool WriteBlockIndex(const CDiskBlockIndex& blockindex);
bool ReadBestInvalidWork(CBigNum& bnBestInvalidWork);
bool WriteBestInvalidWork(CBigNum bnBestInvalidWork);
bool ReadBlockFileInfo(int nFile, CBlockFileInfo &fileinfo);
bool WriteBlockFileInfo(int nFile, const CBlockFileInfo &fileinfo);
bool ReadLastBlockFile(int &nFile);
bool WriteLastBlockFile(int nFile);
bool LoadBlockIndexGuts();
};
#endif // BITCOIN_TXDB_BDB_H
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