Package org.rssowl.core.internal.persist.service

Source Code of org.rssowl.core.internal.persist.service.PersistenceServiceImpl

/*   **********************************************************************  **
**   Copyright notice                                                       **
**                                                                          **
**   (c) 2005-2009 RSSOwl Development Team                                  **
**   http://www.rssowl.org/                                                 **
**                                                                          **
**   All rights reserved                                                    **
**                                                                          **
**   This program and the accompanying materials are made available under   **
**   the terms of the Eclipse Public License v1.0 which accompanies this    **
**   distribution, and is available at:                                     **
**   http://www.rssowl.org/legal/epl-v10.html                               **
**                                                                          **
**   A copy is found in the file epl-v10.html and important notices to the  **
**   license from the team is found in the textfile LICENSE.txt distributed **
**   in this package.                                                       **
**                                                                          **
**   This copyright notice MUST APPEAR in all copies of the file!           **
**                                                                          **
**   Contributors:                                                          **
**     RSSOwl Development Team - initial API and implementation             **
**                                                                          **
**  **********************************************************************  */

package org.rssowl.core.internal.persist.service;

import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.rssowl.core.internal.Activator;
import org.rssowl.core.persist.service.AbstractPersistenceService;
import org.rssowl.core.persist.service.PersistenceException;
import org.rssowl.core.util.LongOperationMonitor;

import java.io.IOException;

/**
* @author bpasero
*/
public class PersistenceServiceImpl extends AbstractPersistenceService {

  /** */
  public PersistenceServiceImpl() {}

  /*
   * Startup the persistence layer. In case of a Database, this would be the
   * right place to create relations. Subclasses should override. @throws
   * PersistenceException In case of an error while starting up the persistence
   * layer.
   */
  @Override
  public void startup(LongOperationMonitor monitor) throws PersistenceException {
    super.startup(monitor);

    /* Startup DB and Model-Search */
    DBManager.getDefault().startup(monitor);
    getModelSearch().startup();
  }

  /*
   * @see org.rssowl.core.persist.service.IPersistenceService#shutdown(boolean)
   */
  public void shutdown(boolean emergency) throws PersistenceException {

    /* Shutdown ID Generator, Search and DB */
    if (!emergency) {

      /* ID Generator (safely) */
      try {
        getIDGenerator().shutdown();
      } catch (Exception e) {
        Activator.safeLogError(e.getMessage(), e);
      }

      /* Search (safely) */
      try {
        getModelSearch().shutdown(emergency);
      } catch (Exception e) {
        Activator.safeLogError(e.getMessage(), e);
      }

      /* DB */
      DBManager.getDefault().shutdown();
    }

    /* Emergent Exit: Shutdown DB and Search */
    else {

      /* DB (safely) */
      try {
        DBManager.getDefault().shutdown();
      } catch (Exception e) {
        Activator.safeLogError(e.getMessage(), e);
      }

      /* Search */
      getModelSearch().shutdown(emergency);
    }
  }

  /*
   * @see org.rssowl.core.model.dao.IPersistService#recreateSchema()
   */
  public void recreateSchema() throws PersistenceException {
    DBManager.getDefault().dropDatabase();
    DBManager.getDefault().createDatabase(new LongOperationMonitor(new NullProgressMonitor()) {
      @Override
      public void beginLongOperation(boolean isCancelable) {
      //Do nothing
      }
    });
    getModelSearch().clearIndex();
  }

  public void optimizeOnNextStartup() throws PersistenceException {
    try {
      DBManager.getDefault().getDefragmentFile().createNewFile();
    } catch (IOException e) {
      throw new PersistenceException(e);
    }
  }

  public IStatus getStartupStatus() {
    return DBManager.getDefault().getStartupStatus();
  }
}
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