kexiqueryview.cpp

/* This file is part of the KDE project
   Copyright (C) 2004 Lucijan Busch <lucijan@kde.org>
   Copyright (C) 2004, 2006 Jaroslaw Staniek <js@iidea.pl>
 
   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 <kexiproject.h>
#include <kexidb/connection.h>
#include <kexidb/parser/parser.h>
#include <kexidb/cursor.h>
#include <keximainwindow.h>
#include <kexiutils/utils.h>
 
#include "kexiqueryview.h"
#include "kexiquerydesignersql.h"
#include "kexiquerydesignerguieditor.h"
#include "kexiquerypart.h"
#include <widget/tableview/kexitableview.h>
#include <widget/kexiqueryparameters.h>

class KexiQueryView::Private
{
    public:
        Private()
            : cursor(0)
//          , queryHasBeenChangedInViewMode( Kexi::NoViewMode )
        {}
        ~Private() {}
        KexiDB::Cursor *cursor;
//      int queryHasBeenChangedInViewMode;
};
 
//---------------------------------------------------------------------------------
 
KexiQueryView::KexiQueryView(KexiMainWindow *win, TQWidget *parent, const char *name)
 : KexiDataTable(win, parent, name)
 , d( new Private() )
{
    tableView()->setInsertingEnabled(false); //default
}
 
KexiQueryView::~KexiQueryView()
{
    if (d->cursor)
        d->cursor->connection()->deleteCursor(d->cursor);
    delete d;
}
 
tristate KexiQueryView::executeQuery(KexiDB::QuerySchema *query)
{
    if (!query)
        return false;
    KexiUtils::WaitCursor wait;
    KexiDB::Cursor *oldCursor = d->cursor;
    KexiDB::debug( query->parameters() );
    bool ok;
    TQValueList<TQVariant> params;
    {
        KexiUtils::WaitCursorRemover remover;
        params = KexiQueryParameters::getParameters(this, 
            *mainWin()->project()->dbConnection()->driver(), *query, ok);
    }
    if (!ok) {//input cancelled
        return cancelled;
    }
    d->cursor = mainWin()->project()->dbConnection()->executeQuery(*query, params);
    if (!d->cursor) {
        parentDialog()->setStatus(parentDialog()->mainWin()->project()->dbConnection(), 
            i18n("Query executing failed."));
        //todo: also provide server result and sql statement
        return false;
    }
    setData(d->cursor);

    d->cursor->close();
 
    if (oldCursor)
        oldCursor->connection()->deleteCursor(oldCursor);

    tableView()->setReadOnly( true );
    //set data model itself read-only too
    tableView()->KexiDataAwareObjectInterface::data()->setReadOnly( true );
    tableView()->setInsertingEnabled( false );
    return true;
}
 
tristate KexiQueryView::afterSwitchFrom(int mode)
{
    if (mode==Kexi::NoViewMode) {
        KexiDB::QuerySchema *querySchema = static_cast<KexiDB::QuerySchema *>(parentDialog()->schemaData());
        const tristate result = executeQuery(querySchema);
        if (true != result)
            return result;
    }
    else if (mode==Kexi::DesignViewMode || Kexi::TextViewMode) {
        KexiQueryPart::TempData * temp = static_cast<KexiQueryPart::TempData*>(parentDialog()->tempData());
 
        //remember what view we should use to store data changes, if needed
//      if (temp->queryChangedInPreviousView)
//          d->queryHasBeenChangedInViewMode = mode;
//      else
//          d->queryHasBeenChangedInViewMode = Kexi::NoViewMode;
 
        const tristate result = executeQuery(temp->query());
        if (true != result)
            return result;
    }
    return true;
}
 
KexiDB::SchemaData* KexiQueryView::storeNewData(const KexiDB::SchemaData& sdata, bool &cancel)
{
    KexiViewBase * view = parentDialog()->viewThatRecentlySetDirtyFlag();
    if (dynamic_cast<KexiQueryDesignerGuiEditor*>(view))
        return dynamic_cast<KexiQueryDesignerGuiEditor*>(view)->storeNewData(sdata, cancel);
    if (dynamic_cast<KexiQueryDesignerSQLView*>(view))
        return dynamic_cast<KexiQueryDesignerSQLView*>(view)->storeNewData(sdata, cancel);
    return 0;
}
 
tristate KexiQueryView::storeData(bool dontAsk)
{
    KexiViewBase * view = parentDialog()->viewThatRecentlySetDirtyFlag();
    if (dynamic_cast<KexiQueryDesignerGuiEditor*>(view))
        return dynamic_cast<KexiQueryDesignerGuiEditor*>(view)->storeData(dontAsk);
    if (dynamic_cast<KexiQueryDesignerSQLView*>(view))
        return dynamic_cast<KexiQueryDesignerSQLView*>(view)->storeData(dontAsk);
    return false;
}
 
 
#include "kexiqueryview.moc"