MockRepositoryResourceData.java

/*!
 * 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) 2002-2013 Pentaho Corporation..  All rights reserved.
 */

package org.pentaho.reporting.platform.plugin;

/*
 * 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 2008 Pentaho Corporation.  All rights reserved.
 */

import java.io.InputStream;

import org.pentaho.platform.api.repository2.unified.IUnifiedRepository;
import org.pentaho.platform.api.repository2.unified.RepositoryFile;
import org.pentaho.platform.api.repository2.unified.UnifiedRepositoryException;
import org.pentaho.platform.api.repository2.unified.data.simple.SimpleRepositoryFileData;
import org.pentaho.platform.engine.core.system.PentahoSessionHolder;
import org.pentaho.platform.engine.core.system.PentahoSystem;
import org.pentaho.reporting.libraries.resourceloader.ResourceKey;
import org.pentaho.reporting.libraries.resourceloader.ResourceLoadingException;
import org.pentaho.reporting.libraries.resourceloader.ResourceManager;

/**
 * This class is implemented to support loading solution files from the pentaho repository into JFreeReport
 * 
 * @author Will Gorman/Michael D'Amour
 */
public class MockRepositoryResourceData extends RepositoryResourceData {

  /**
   * constructor which takes a resource key for data loading specifics
   * 
   * @param key
   *          resource key
   */
  public MockRepositoryResourceData( final ResourceKey key ) {
    super( key );
  }

  /**
   * gets a resource stream from the runtime context.
   * 
   * @param caller
   *          resource manager
   * @return input stream
   */
  public InputStream getResourceAsStream( ResourceManager caller ) throws ResourceLoadingException {
    IUnifiedRepository unifiedRepository =
        PentahoSystem.get( IUnifiedRepository.class, PentahoSessionHolder.getSession() );
    try {
      SimpleRepositoryFileData fileData =
          unifiedRepository.getDataForRead( getKey().getIdentifierAsString(), SimpleRepositoryFileData.class );
      return fileData.getStream();
    } catch ( UnifiedRepositoryException ex ) {
      try {
        SimpleRepositoryFileData fileData =
            unifiedRepository.getDataForRead( "." + getKey().getIdentifierAsString(), SimpleRepositoryFileData.class );
        return fileData.getStream();
      } catch ( UnifiedRepositoryException ex2 ) {
        // might be due to access denial
        throw new ResourceLoadingException( ex.getLocalizedMessage(), ex );
      }
    }
  }

  /**
   * return the version number
   * 
   * @param caller
   *          resource manager
   * @return version
   */
  public long getVersion( ResourceManager caller ) throws ResourceLoadingException {
    IUnifiedRepository unifiedRepository =
        PentahoSystem.get( IUnifiedRepository.class, PentahoSessionHolder.getSession() );
    try {
      RepositoryFile repositoryFile = unifiedRepository.getFileById( getKey().getIdentifier().toString() );
      // if we got a FileNotFoundException on getResourceInputStream then we will get a null file; avoid NPE
      if ( repositoryFile != null ) {
        return repositoryFile.getLastModifiedDate().getTime();
      } else {
        return -1;
      }
    } catch ( UnifiedRepositoryException ex ) {
      return -1;
    }
  }

}