PropertiesResourceFactory.java example

Explorer
pentaho-reporting-master
/*
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.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 Lesser General Public License for more details.
*
* Copyright (c) 2006 - 2013 Pentaho Corporation and Contributors.  All rights reserved.
*/

package org.pentaho.reporting.libraries.resourceloader.factory.property;

import org.pentaho.reporting.libraries.resourceloader.Resource;
import org.pentaho.reporting.libraries.resourceloader.ResourceCreationException;
import org.pentaho.reporting.libraries.resourceloader.ResourceData;
import org.pentaho.reporting.libraries.resourceloader.ResourceFactory;
import org.pentaho.reporting.libraries.resourceloader.ResourceKey;
import org.pentaho.reporting.libraries.resourceloader.ResourceLoadingException;
import org.pentaho.reporting.libraries.resourceloader.ResourceManager;
import org.pentaho.reporting.libraries.resourceloader.SimpleResource;

import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;

public class PropertiesResourceFactory
  implements ResourceFactory {
  public PropertiesResourceFactory() {
  }

  public Resource create( final ResourceManager manager,
                          final ResourceData data,
                          final ResourceKey context )
    throws ResourceCreationException, ResourceLoadingException {
    try {
      final Properties properties = new Properties();
      final InputStream stream = data.getResourceAsStream( manager );
      try {
        properties.load( stream );
      } finally {
        stream.close();
      }
      return new SimpleResource( data.getKey(), properties, Properties.class, data.getVersion( manager ) );
    } catch ( IOException e ) {
      throw new ResourceLoadingException( "Failed to load the properties file.", e );
    }
  }

  public Class getFactoryType() {
    return Properties.class;
  }

  public void initializeDefaults() {
    // none required ...
  }
}