mirror of
https://github.com/ElvishArtisan/rivendell.git
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69 lines
1.6 KiB
C++
69 lines
1.6 KiB
C++
// modify.cpp
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//
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// Routines for --modify for rddbmgr(8)
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//
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// (C) Copyright 2018 Fred Gleason <fredg@paravelsystems.com>
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License version 2 as
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// published by the Free Software Foundation.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public
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// License along with this program; if not, write to the Free Software
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// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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//
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#include <stdlib.h>
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#include <dbversion.h>
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#include <rddb.h>
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#include "rddbmgr.h"
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bool MainObject::Modify(QString *err_msg,int set_schema) const
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{
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*err_msg="ok";
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//
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// Update/Revert
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//
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int current_schema=GetCurrentSchema();
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if(current_schema==0) {
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*err_msg="unable to determine DB schema, aborting";
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return false;
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}
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if(current_schema>RD_VERSION_DATABASE) {
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*err_msg="unable to modify, unknown current schema";
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return false;
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}
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if(set_schema>current_schema) {
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return UpdateSchema(current_schema,set_schema,err_msg);
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}
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if(set_schema<current_schema) {
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return RevertSchema(current_schema,set_schema,err_msg);
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}
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return true;
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}
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int MainObject::GetCurrentSchema() const
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{
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int ret=0;
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QString sql=QString("select DB from VERSION");
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QSqlQuery *q=new QSqlQuery(sql);
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if(q->first()) {
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ret=q->value(0).toInt();
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}
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delete q;
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return ret;
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}
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