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path: root/xmlhelp/source/cxxhelp/provider/db.cxx
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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.cxx,v $
 * $Revision: 1.8 $
 *
 * 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.
 *
 ************************************************************************/

// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_xmlhelp.hxx"

#include "db.hxx"

#include <rtl/alloc.h>
#include <cstring>

namespace berkeleydbproxy {

//----------------------------------------------------------------------------
    namespace db_internal
    {
        // static void raise_error(int dberr, const char * where);

        static inline int check_error(int dberr, const char * where)
        {
            (void)where;
            
            // if (dberr) raise_error(dberr,where); 
            return dberr;
        }
    }

Db::Db()
{  
    db_internal::check_error( db_create(&m_pDBP,0,0),"Db::Db" );
}


Db::~Db()
{
    if (m_pDBP)
    {
        // should not happen
        // TODO: add assert
    }
  
}


int Db::close(u_int32_t flags)
{
    int error = m_pDBP->close(m_pDBP,flags);
    m_pDBP = 0;
    return db_internal::check_error(error,"Db::close"); 
}

int Db::open(DB_TXN *txnid, 
             const char *file,
             const char *database, 
             DBTYPE type, 
             u_int32_t flags, 
             int mode)
{
    int err = m_pDBP->open(m_pDBP,txnid,file,database,type,flags,mode);
    return db_internal::check_error( err,"Db::open" );
}

    
int Db::get(DB_TXN *txnid, Dbt *key, Dbt *data, u_int32_t flags)
{
    int err = m_pDBP->get(m_pDBP,txnid,key,data,flags);

    // these are non-exceptional outcomes
    if (err != DB_NOTFOUND && err != DB_KEYEMPTY) 
        db_internal::check_error( err,"Db::get" );

    return err;
}

int Db::cursor(DB_TXN *txnid, Dbc **cursorp, u_int32_t flags)
{
    DBC * dbc = 0;
    int error = m_pDBP->cursor(m_pDBP,txnid,&dbc,flags);
  
    if (!db_internal::check_error(error,"Db::cursor"))
        *cursorp = new Dbc(dbc);

    return error;
}

//----------------------------------------------------------------------------

Dbc::Dbc(DBC * dbc)
: m_pDBC(dbc)
{
}

Dbc::~Dbc() 
{
}

int Dbc::close()
{
    int err = m_pDBC->c_close(m_pDBC);
    delete this;
    return db_internal::check_error( err,"Dbcursor::close" );
}

int Dbc::get(Dbt *key, Dbt *data, u_int32_t flags)
{
    int err = m_pDBC->c_get(m_pDBC,key,data,flags);

    // these are non-exceptional outcomes
    if (err != DB_NOTFOUND && err != DB_KEYEMPTY) 
        db_internal::check_error( err, "Dbcursor::get" );

    return err;
}

//----------------------------------------------------------------------------


Dbt::Dbt()
{  
    using namespace std;
    DBT * thispod = this;
    memset(thispod, 0, sizeof *thispod);
}


Dbt::Dbt(void *data_arg, u_int32_t size_arg)
{
    using namespace std;
    DBT * thispod = this;
    memset(thispod, 0, sizeof *thispod);
    this->set_data(data_arg);
    this->set_size(size_arg);
}

Dbt::Dbt(const Dbt & other)
{
    using namespace std;
    const DBT *otherpod = &other;
    DBT *thispod = this;
    memcpy(thispod, otherpod, sizeof *thispod);
}

Dbt& Dbt::operator = (const Dbt & other)
{
    if (this != &other) 
    {
        using namespace std;
        const DBT *otherpod = &other;
        DBT *thispod = this;
        memcpy(thispod, otherpod, sizeof *thispod);
    }
    return *this;
}

Dbt::~Dbt() 
{
}

void * Dbt::get_data() const
{ 
    return this->data;
}

void Dbt::set_data(void *value)
{
    this->data = value;
}

u_int32_t Dbt::get_size() const
{ 
    return this->size;
}

void Dbt::set_size(u_int32_t value)
{
    this->size = value; 
}

void Dbt::set_flags(u_int32_t value)
{ 
    this->flags = value;
}

//----------------------------------------------------------------------------
/*
void db_internal::raise_error(int dberr, const char * where)
{
    if (!where) where = "<unknown>";
    
    const char * dberrmsg = db_strerror(dberr);
    if (!dberrmsg || !*dberrmsg) dberrmsg = "<unknown DB error>";
    
    rtl::OString msg = where;
    msg += ": ";
    msg += dberrmsg;

    throw DbException(msg);
}
*/

//----------------------------------------------------------------------------
} // namespace ecomp