TaskFileDB.java :  » Project-Management » borg » net » sf » borg » model » db » file » Java Open Source

/*
This file is part of BORG.
 
    BORG 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.
 
    BORG 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 BORG; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
Copyright 2003 by Mike Berger
 */

package net.sf.borg.model.db.file;

import java.io.File;
import java.net.URL;

import net.sf.borg.common.Errmsg;
import net.sf.borg.common.Resource;
import net.sf.borg.common.XTree;
import net.sf.borg.model.db.file.mdb.MDB;
import net.sf.borg.model.db.file.mdb.SMDB;
import net.sf.borg.model.db.file.mdb.Schema;

class TaskFileDB extends FileDBCreator {
    TaskFileDB() {
    }

    final void init(String file, boolean shared) throws Exception {
  file = file + "/mrdb.jdb";

  TaskAdapter ta = new TaskAdapter();
  // set the schema for the task DB
  Schema schema = new Schema();
  URL schurl = getClass().getResource("/resource/task_schema.xml");
  XTree sch_xml = XTree.readFromURL(schurl);
  schema.setFromXML(sch_xml);

  // create the database if it does not exisit
  File fp = new File(file);
  boolean newdb = false;
  if (!fp.exists()) {
      // System.out.println( "Task DB does not exist...creating DB " );
      Errmsg.notice(Resource.getResourceString("Creating_DB_file:_") + file);
      SMDB.create(Resource.getResourceString("BorgTrac_Database"), file, 100, schema);
      newdb = true;
  }

  // open the DB with the proper mode


      db_ = new FileBeanDB(file, MDB.READ_WRITE, ta, shared);
  

  // check schema for update - transition
  FileBeanDB fdb = (FileBeanDB) db_;
  if (newdb) {
      fdb.setNormalize(true);
  }
  Schema oldsch = fdb.getSchema();
  try {
      oldsch.getType("UT1");
      oldsch.getType("CAT");
  } catch (Exception e) {
      // DB does not have new fields - update the schema
      fdb.setSchema(schema);
  }
    }
}