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/***************************************************************************
* kexidbcursor.cpp
* This file is part of the KDE project
* copyright (C)2004-2005 by Sebastian Sauer (mail@dipe.org)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
* This program 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
* Library General Public License for more details.
* You should have received a copy of the GNU Library General Public License
* along with this program; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
***************************************************************************/
#include "kexidbcursor.h"
#include "kexidbconnection.h"
#include <kexidb/tableschema.h>
#include <kexidb/queryschema.h>
#include <kdebug.h>
using namespace Kross::KexiDB;
KexiDBCursor::KexiDBCursor(::KexiDB::Cursor* cursor)
: Kross::Api::Class<KexiDBCursor>("KexiDBCursor")
, m_cursor(cursor)
{
this->addFunction0<Kross::Api::Variant>("open", this, &KexiDBCursor::open );
this->addFunction0<Kross::Api::Variant>("isOpened", this, &KexiDBCursor::isOpened );
this->addFunction0<Kross::Api::Variant>("reopen", this, &KexiDBCursor::reopen );
this->addFunction0<Kross::Api::Variant>("close", this, &KexiDBCursor::close );
this->addFunction0<Kross::Api::Variant>("moveFirst", this, &KexiDBCursor::moveFirst );
this->addFunction0<Kross::Api::Variant>("moveLast", this, &KexiDBCursor::moveLast );
this->addFunction0<Kross::Api::Variant>("movePrev", this, &KexiDBCursor::movePrev );
this->addFunction0<Kross::Api::Variant>("moveNext", this, &KexiDBCursor::moveNext );
this->addFunction0<Kross::Api::Variant>("bof", this, &KexiDBCursor::bof );
this->addFunction0<Kross::Api::Variant>("eof", this, &KexiDBCursor::eof );
this->addFunction0<Kross::Api::Variant>("at", this, &KexiDBCursor::at );
this->addFunction0<Kross::Api::Variant>("fieldCount", this, &KexiDBCursor::fieldCount );
this->addFunction1<Kross::Api::Variant, Kross::Api::Variant>("value", this, &KexiDBCursor::value );
this->addFunction2<Kross::Api::Variant, Kross::Api::Variant, Kross::Api::Variant>("setValue", this, &KexiDBCursor::setValue );
this->addFunction0<Kross::Api::Variant>("save", this, &KexiDBCursor::save );
}
KexiDBCursor::~KexiDBCursor()
{
///@todo check ownership
//delete m_cursor;
clearBuffers();
}
void KexiDBCursor::clearBuffers()
{
TQMap<TQ_LLONG, Record*>::ConstIterator
it( m_modifiedrecords.constBegin() ), end( m_modifiedrecords.constEnd() );
for( ; it != end; ++it)
delete it.data();
m_modifiedrecords.clear();
}
const TQString KexiDBCursor::getClassName() const
{
return "Kross::KexiDB::KexiDBCursor";
}
bool KexiDBCursor::open() { return m_cursor->open(); }
bool KexiDBCursor::isOpened() { return m_cursor->isOpened(); }
bool KexiDBCursor::reopen() { return m_cursor->reopen(); }
bool KexiDBCursor::close() { return m_cursor->close(); }
bool KexiDBCursor::moveFirst() { return m_cursor->moveFirst(); }
bool KexiDBCursor::moveLast() { return m_cursor->moveLast(); }
bool KexiDBCursor::movePrev() { return m_cursor->movePrev(); }
bool KexiDBCursor::moveNext() { return m_cursor->moveNext(); }
bool KexiDBCursor::bof() { return m_cursor->bof(); }
bool KexiDBCursor::eof() { return m_cursor->eof(); }
TQ_LLONG KexiDBCursor::at() { return m_cursor->at(); }
uint KexiDBCursor::fieldCount() { return m_cursor->fieldCount(); }
TQVariant KexiDBCursor::value(uint index)
{
return m_cursor->value(index);
}
bool KexiDBCursor::setValue(uint index, TQVariant value)
{
::KexiDB::QuerySchema* query = m_cursor->query();
if(! query) {
kdDebug() << "Invalid query in KexiDBCursor::setValue index=" << index << " value=" << value << endl;
return false;
}
::KexiDB::QueryColumnInfo* column = query->fieldsExpanded().at(index);
if(! column) {
kdDebug() << "Invalid column in KexiDBCursor::setValue index=" << index << " value=" << value << endl;
return false;
}
const TQ_LLONG position = m_cursor->at();
if(! m_modifiedrecords.contains(position))
m_modifiedrecords.replace(position, new Record(m_cursor));
m_modifiedrecords[position]->buffer->insert(*column, value);
return true;
}
bool KexiDBCursor::save()
{
if(m_modifiedrecords.count() < 1)
return true;
//It is needed to close the cursor before we are able to update the rows
//since else the database could be locked (e.g. at the case of SQLite a
//KexiDB: Object ERROR: 6: SQLITE_LOCKED would prevent updating).
//Maybe it works fine with other drivers like MySQL or Postqre?
m_cursor->close();
bool ok = true;
TQMap<TQ_LLONG, Record*>::ConstIterator
it( m_modifiedrecords.constBegin() ), end( m_modifiedrecords.constEnd() );
for( ; it != end; ++it) {
bool b = m_cursor->updateRow(it.data()->rowdata, * it.data()->buffer, m_cursor->isBuffered());
if(ok) {
ok = b;
//break;
}
}
//m_cursor->close();
clearBuffers();
return ok;
}
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