MetadataPublisher.java example

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pentaho-platform-master
/*
 * 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 2006 - 2013 Pentaho Corporation.  All rights reserved.
 */

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

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;

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

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();
  }
}