jfix.db4o.engine.migration.PerstToDb4o.java Source code

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Here is the source code for jfix.db4o.engine.migration.PerstToDb4o.java

Source

/*
Copyright (C) 2016 maik.jablonski@jease.org
    
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 3 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, see <http://www.gnu.org/licenses/>.
 */
package jfix.db4o.engine.migration;

import java.io.File;
import java.io.IOException;

import jfix.db4o.ObjectDatabase;
import jfix.db4o.Persistent;
import jfix.db4o.engine.PersistenceEngine;
import jfix.db4o.engine.PersistenceEngineDb4o;
import jfix.db4o.engine.PersistenceEnginePerst;

import org.apache.commons.io.FileUtils;

public class PerstToDb4o {

    public static void main(String[] args) throws IOException {
        if (args.length == 0) {
            System.out.println("Database name required.");
            return;
        }

        String databaseName = args[0];

        PersistenceEngine perstEngine = new PersistenceEnginePerst();
        perstEngine.open(databaseName);

        ObjectDatabase perst = new ObjectDatabase(perstEngine);
        perst.open();

        PersistenceEngine db4oEngine = new PersistenceEngineDb4o();
        db4oEngine.open(databaseName);

        ObjectDatabase db4o = new ObjectDatabase(db4oEngine);
        db4o.open();

        for (Persistent p : perst.query(Persistent.class)) {
            db4o.save(p);
        }

        FileUtils.copyDirectory(new File(perst.getBlobDirectory() + File.separator + "blob"),
                new File(db4o.getBlobDirectory() + File.separator + "blob"));

        db4o.close();
        perst.close();
    }
}