CDB Class Reference

RAII class that provides access to a Berkeley database. More...

#include <db.h>

Inheritance diagram for CDB:

Collaboration diagram for CDB:

Public Member Functions
void	Flush ()
void	Close ()
bool	TxnBegin ()
bool	TxnCommit ()
bool	TxnAbort ()
bool	ReadVersion (int &nVersion)
bool	WriteVersion (int nVersion)

Static Public Member Functions
static bool	Rewrite (const std::string &strFile, const char *pszSkip=NULL)

Protected Member Functions
	CDB (const char *pszFile, const char *pszMode="r+")
	~CDB ()
template<typename K , typename T >
bool	Read (const K &key, T &value)
template<typename K , typename T >
bool	Write (const K &key, const T &value, bool fOverwrite=true)
template<typename K >
bool	Erase (const K &key)
template<typename K >
bool	Exists (const K &key)
Dbc *	GetCursor ()
int	ReadAtCursor (Dbc *pcursor, CDataStream &ssKey, CDataStream &ssValue, unsigned int fFlags=DB_NEXT)

Protected Attributes
Db *	pdb
std::string	strFile
DbTxn *	activeTxn
bool	fReadOnly

Private Member Functions
	CDB (const CDB &)
void	operator= (const CDB &)

Detailed Description

RAII class that provides access to a Berkeley database.

Definition at line 90 of file db.h.

Constructor & Destructor Documentation

CDB::CDB ( const char *  pszFile, const char *  pszMode = "r+"  )

explicitprotected

Definition at line 224 of file db.cpp.

References CLIENT_VERSION, CDBEnv::cs_db, CDBEnv::dbenv, Exists(), fReadOnly, GetDataDir(), CDBEnv::IsMock(), LOCK, CDBEnv::mapDb, CDBEnv::mapFileUseCount, CDBEnv::Open(), pdb, strFile, strprintf, and WriteVersion().

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CDB::~CDB ( )

inlineprotected

Definition at line 99 of file db.h.

References Close().

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CDB::CDB ( const CDB &  )

private

Member Function Documentation

void CDB::Close

(

)

Definition at line 300 of file db.cpp.

References activeTxn, CDBEnv::cs_db, Flush(), LOCK, CDBEnv::mapFileUseCount, pdb, and strFile.

Referenced by ~CDB().

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template<typename K >

bool CDB::Erase ( const K &  key )

inlineprotected

Definition at line 173 of file db.h.

References CLIENT_VERSION, CDataStream::reserve(), SER_DISK, and CDataStream::size().

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template<typename K >

bool CDB::Exists ( const K &  key )

inlineprotected

Definition at line 195 of file db.h.

References CLIENT_VERSION, CDataStream::reserve(), SER_DISK, and CDataStream::size().

Referenced by CDB().

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void CDB::Flush

(

)

Definition at line 287 of file db.cpp.

References activeTxn, CDBEnv::dbenv, fReadOnly, and GetArg().

Referenced by Close().

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Dbc* CDB::GetCursor ( )

inlineprotected

Definition at line 214 of file db.h.

void CDB::operator= ( const CDB &  )

private

template<typename K , typename T >

bool CDB::Read ( const K &  key, T &  value  )

inlineprotected

Definition at line 109 of file db.h.

References CLIENT_VERSION, CDataStream::reserve(), SER_DISK, and CDataStream::size().

Referenced by ReadVersion().

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int CDB::ReadAtCursor ( Dbc *  pcursor, CDataStream &  ssKey, CDataStream &  ssValue, unsigned int  fFlags = DB_NEXT  )

inlineprotected

Definition at line 225 of file db.h.

References CDataStream::clear(), SER_DISK, CDataStream::SetType(), CDataStream::size(), and CDataStream::write().

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bool CDB::ReadVersion ( int &  nVersion )

inline

Definition at line 294 of file db.h.

References Read().

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bool CDB::Rewrite ( const std::string &  strFile, const char *  pszSkip = NULL  )

static

Definition at line 341 of file db.cpp.

References CDBEnv::CheckpointLSN(), CDataStream::clear(), CLIENT_VERSION, CDBEnv::CloseDb(), CDBEnv::cs_db, CDBEnv::dbenv, LOCK, LogPrintf, CDBEnv::mapFileUseCount, MilliSleep(), SER_DISK, CDataStream::size(), and strFile.

Referenced by CWallet::EncryptWallet(), CWallet::LoadWallet(), and CWallet::ZapWalletTx().

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bool CDB::TxnAbort ( )

inline

Definition at line 285 of file db.h.

bool CDB::TxnBegin ( )

inline

Definition at line 265 of file db.h.

References CDBEnv::TxnBegin().

Referenced by movecmd().

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bool CDB::TxnCommit ( )

inline

Definition at line 276 of file db.h.

Referenced by movecmd().

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template<typename K , typename T >

bool CDB::Write ( const K &  key, const T &  value, bool  fOverwrite = true  )

inlineprotected

Definition at line 144 of file db.h.

References CLIENT_VERSION, CDataStream::reserve(), SER_DISK, and CDataStream::size().

Referenced by WriteVersion().

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bool CDB::WriteVersion ( int  nVersion )

inline

Definition at line 300 of file db.h.

References Write().

Referenced by CDB().

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Member Data Documentation

DbTxn* CDB::activeTxn

protected

Definition at line 95 of file db.h.

Referenced by Close(), and Flush().

bool CDB::fReadOnly

protected

Definition at line 96 of file db.h.

Referenced by CDB(), and Flush().

Db* CDB::pdb

protected

Definition at line 93 of file db.h.

Referenced by CDB(), and Close().

std::string CDB::strFile

protected

Definition at line 94 of file db.h.

Referenced by CDB(), Close(), and Rewrite().

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The documentation for this class was generated from the following files:

• src/db.h
• src/db.cpp