MetadataPublisher.java

/*
 * This program is free software; you can redistribute it and/or modify it under the 
 * terms of the GNU General Public License, version 2 as published by the Free Software 
 * Foundation.
 *
 * You should have received a copy of the GNU General Public License along with this 
 * program; if not, you can obtain a copy at http://www.gnu.org/licenses/gpl-2.0.html 
 * or from the Free Software Foundation, Inc., 
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * 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.
 * 
 * Copyright 2005 - 2008 Pentaho Corporation.  All rights reserved.
 *  
 * @created Jul 13, 2005 
 * @author James Dixon
 * 
 */

package org.pentaho.platform.engine.services.metadata;

import java.util.ArrayList;
import java.util.List;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.pentaho.metadata.repository.IMetadataDomainRepository;
import org.pentaho.platform.api.engine.IPentahoSession;
import org.pentaho.platform.engine.core.system.BasePublisher;
import org.pentaho.platform.engine.core.system.PentahoSystem;
import org.pentaho.platform.engine.services.messages.Messages;

public class MetadataPublisher extends BasePublisher {

  private static final long serialVersionUID = 1843038346011563927L;

  private static final Log logger = LogFactory.getLog(MetadataPublisher.class);

  public static final int NO_ERROR = 0;

  public static final int UNABLE_TO_DELETE = (int) Math.pow(2, 0);

  public static final int UNABLE_TO_IMPORT = (int) Math.pow(2, 1);

  public static final int NO_META = (int) Math.pow(2, 2);

  public static String XMI_FILENAME = "metadata.xmi"; //$NON-NLS-1$
  
  private static int numberUpdated = 0;

  @Override
  public Log getLogger() {
    return MetadataPublisher.logger;
  }

  public String getName() {
    return Messages.getInstance().getString("MetadataPublisher.USER_PUBLISHER_NAME"); //$NON-NLS-1$
  }

  public String getDescription() {
    return Messages.getInstance().getString("MetadataPublisher.USER_PUBLISHER_DESCRIPTION"); //$NON-NLS-1$
  }

  @Override
  public String publish(final IPentahoSession session) {
    MetadataPublisher.numberUpdated = 0;
    List<String> messages = new ArrayList<String>();
    // refresh new metadata domains
    try {
      IMetadataDomainRepository repo = PentahoSystem.get(IMetadataDomainRepository.class, session);
      repo.reloadDomains();
      MetadataPublisher.numberUpdated = repo.getDomainIds().size();
      return Messages.getInstance().getString(
            "MetadataPublisher.USER_METADATA_RELOADED", Integer.toString(MetadataPublisher.numberUpdated)); //$NON-NLS-1$
    } catch (Exception e) {
      logger.error(Messages.getInstance().getErrorString("MetadataPublisher.ERROR_0001_USER_IMPORT_META_FAILED"), e); //$NON-NLS-1$
      messages.add(Messages.getInstance().getString("MetadataPublisher.ERROR_0001_USER_IMPORT_META_FAILED")); //$NON-NLS-1$
    }
    
    StringBuffer buffer = new StringBuffer();
    buffer.append("<small>"); //$NON-NLS-1$
    for (String str : messages) {
      buffer.append("<br/>" + str); //$NON-NLS-1$
    }
    buffer.append("<br/><b>" + Messages.getInstance().getString("MetadataPublisher.INFO_0001_CHECK_LOG") + "</b></small>"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
    return buffer.toString();
  }
}