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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2008 by Sun Microsystems, Inc.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: db.hxx,v $
* $Revision: 1.9 $
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#ifndef BERKELEYDBPROXY_DB_HXX_
#define BERKELEYDBPROXY_DB_HXX_
#ifdef SYSTEM_DB
#include <db.h>
#else
#include <berkeleydb/db.h>
#endif
#include "com/sun/star/ucb/XSimpleFileAccess.hpp"
#include <hash_map>
#include <rtl/string.hxx>
extern "C" {
typedef void *(*db_malloc_fcn_type)(size_t);
typedef void *(*db_realloc_fcn_type)(void *, size_t);
typedef void (*db_free_fcn_type)(void *);
}
namespace berkeleydbproxy {
class Dbc;
class Dbt;
namespace db_internal
{
class Noncopyable
{
// not implemented
Noncopyable(const Noncopyable&);
void operator=(const Noncopyable&);
protected:
Noncopyable() {}
~Noncopyable() {}
};
}
class DbException
{
rtl::OString what_;
public:
explicit DbException(rtl::OString const & whatparam)
: what_(whatparam)
{}
const char *what() const
{ return what_.getStr(); }
};
struct eq
{
bool operator()( const rtl::OString& rKey1, const rtl::OString& rKey2 ) const
{ return rKey1.compareTo( rKey2 ) == 0; }
};
struct ha
{
size_t operator()( const rtl::OString& rName ) const
{ return rName.hashCode(); }
};
//#define TEST_DBHELP
class DBData
{
friend class DBHelp;
int m_nSize;
char* m_pBuffer;
void copyToBuffer( const char* pSrcData, int nSize );
public:
DBData( void )
: m_nSize( 0 )
, m_pBuffer( NULL )
{}
~DBData()
{ delete m_pBuffer; }
int getSize() const
{ return m_nSize; }
const char* getData() const
{ return m_pBuffer; }
};
typedef std::hash_map< rtl::OString,std::pair<int,int>,ha,eq > StringToValPosMap;
typedef std::hash_map< rtl::OString,rtl::OString,ha,eq > StringToDataMap;
class DBHelp
{
rtl::OUString m_aFileName;
StringToDataMap* m_pStringToDataMap;
StringToValPosMap* m_pStringToValPosMap;
com::sun::star::uno::Reference< com::sun::star::ucb::XSimpleFileAccess >
m_xSFA;
com::sun::star::uno::Sequence< sal_Int8 >
m_aItData;
const char* m_pItData;
int m_nItRead;
int m_iItPos;
bool implReadLenAndData( const char* pData, int& riPos, DBData& rValue );
public:
DBHelp( const rtl::OUString& rFileName,
com::sun::star::uno::Reference< com::sun::star::ucb::XSimpleFileAccess > xSFA )
: m_aFileName( rFileName )
, m_pStringToDataMap( NULL )
, m_pStringToValPosMap( NULL )
, m_xSFA( xSFA )
, m_pItData( NULL )
, m_nItRead( -1 )
, m_iItPos( -1 )
{}
~DBHelp()
{ releaseHashMap(); }
void createHashMap( bool bOptimizeForPerformance = false );
void releaseHashMap( void );
#ifdef TEST_DBHELP
bool testAgainstDb( const rtl::OString& fileName, bool bOldDbAccess );
#endif
bool getValueForKey( const rtl::OString& rKey, DBData& rValue );
bool startIteration( void );
bool getNextKeyAndValue( DBData& rKey, DBData& rValue );
void stopIteration( void );
};
class Db : db_internal::Noncopyable
{
private:
DB* m_pDBP;
DBHelp* m_pDBHelp;
public:
Db();
~Db();
void setDBHelp( DBHelp* pDBHelp )
{ m_pDBHelp = pDBHelp; }
DBHelp* getDBHelp( void )
{ return m_pDBHelp; }
int close(u_int32_t flags);
int open(DB_TXN *txnid,
const char *file,
const char *database,
DBTYPE type,
u_int32_t flags,
int mode);
int get(DB_TXN* txnid, Dbt *key, Dbt *data, u_int32_t flags);
int cursor(DB_TXN *txnid, Dbc **cursorp, u_int32_t flags);
};
class Dbc : db_internal::Noncopyable
{
friend class Db;
friend class Dbt;
private:
DBC* m_pDBC;
explicit Dbc(DBC* pDBC);
~Dbc();
public:
int close();
int get(Dbt *key, Dbt *data, u_int32_t flags);
};
class Dbt: private DBT
{
friend class Db;
friend class Dbc;
public:
Dbt(void *data_arg, u_int32_t size_arg);
Dbt();
//Dbt(const Dbt & other);
//Dbt & operator=(const Dbt & other);
~Dbt();
void *get_data() const;
void set_data(void *value);
u_int32_t get_size() const;
void set_size(u_int32_t value);
void set_flags(u_int32_t);
};
}
#endif
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