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/*
* Copyright (C) 2009-2012 Geometer Plus <[email protected]>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
#include <string>
#include <ZLLogger.h>
#include "../database/booksdb/BooksDB.h"
#include "../library/Number.h"
#include "Migration.h"
static const std::string RENAME_TABLE_TO_OBSOLETE = "ALTER TABLE BookSeries RENAME TO BookSeries_Obsolete";
static const std::string CREATE_NEW_TABLE = \
"CREATE TABLE IF NOT EXISTS BookSeries ( " \
" book_id INTEGER UNIQUE NOT NULL REFERENCES Books (book_id), " \
" series_id INTEGER NOT NULL REFERENCES Series (series_id), " \
" book_index TEXT " \
"); ";
static const std::string DROP_OBSOLETE_TABLE = "DROP TABLE BookSeries_Obsolete";
static const std::string LOAD_OBSOLETE_SERIES_QUERY =
"SELECT book_id, series_id, book_index" \
" FROM BookSeries_Obsolete;";
class Migration_0_99_0_Runnable : public DBRunnable {
public:
bool run();
};
bool Migration_0_99_0_Runnable::run() {
DBConnection &connection = BooksDB::Instance().connection();
shared_ptr<DBCommand> renameTable = SQLiteFactory::createCommand(RENAME_TABLE_TO_OBSOLETE, connection);
shared_ptr<DBCommand> createNewTable = SQLiteFactory::createCommand(CREATE_NEW_TABLE, connection);
shared_ptr<DBCommand> dropObsoleteTable = SQLiteFactory::createCommand(DROP_OBSOLETE_TABLE, connection);
shared_ptr<DBCommand> loadObsoleteSeries = SQLiteFactory::createCommand(LOAD_OBSOLETE_SERIES_QUERY, connection);
shared_ptr<DBCommand> insertBookSeries = SQLiteFactory::createCommand(BooksDBQuery::SET_BOOKSERIES, connection, "@book_id", DBValue::DBINT, "@series_id", DBValue::DBINT, "@book_index", DBValue::DBTEXT);
if (!renameTable->execute()) {
return false;
}
if (!createNewTable->execute()) {
return false;
}
shared_ptr<DBDataReader> reader = loadObsoleteSeries->executeReader();
while (reader->next()) {
((DBIntValue &) *insertBookSeries->parameter("@book_id").value()) = reader->intValue(0);
((DBIntValue &) *insertBookSeries->parameter("@series_id").value()) = reader->intValue(1);
Number seriesIndex;
if (reader->type(2) == DBValue::DBREAL){
seriesIndex = Number((int)reader->realValue(2));
} else {
seriesIndex = Number(reader->intValue(2));
}
((DBTextValue &) *insertBookSeries->parameter("@book_index").value()) = seriesIndex.value();
if (!insertBookSeries->execute()) {
ZLLogger::Instance().println("Migration", "problems with inserting series & book index");
}
}
dropObsoleteTable->execute();
return true;
}
Migration_0_99_0::Migration_0_99_0() : Migration("0.99.0") {
}
void Migration_0_99_0::doMigrationInternal() {
Migration_0_99_0_Runnable r;
BooksDB::Instance().executeAsTransaction(r);
}
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