ReportCreator.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;

import java.io.IOException;
import java.io.InputStream;
import java.io.Serializable;
import java.net.URL;
import java.util.HashMap;

import org.pentaho.platform.api.repository2.unified.IUnifiedRepository;
import org.pentaho.platform.api.repository2.unified.RepositoryFile;
import org.pentaho.platform.engine.core.system.PentahoSessionHolder;
import org.pentaho.platform.engine.core.system.PentahoSystem;
import org.pentaho.reporting.engine.classic.core.MasterReport;
import org.pentaho.reporting.engine.classic.core.modules.parser.base.ReportGenerator;
import org.pentaho.reporting.libraries.resourceloader.Resource;
import org.pentaho.reporting.libraries.resourceloader.ResourceException;
import org.pentaho.reporting.libraries.resourceloader.ResourceKey;
import org.pentaho.reporting.libraries.resourceloader.ResourceManager;
import org.xml.sax.InputSource;

public class ReportCreator {
  public static MasterReport createReport( final InputStream inputStream, final URL url ) throws IOException,
    ResourceException {
    final ReportGenerator generator = ReportGenerator.createInstance();
    final InputSource repDefInputSource = new InputSource( inputStream );
    return generator.parseReport( repDefInputSource, url );
  }

  public static MasterReport createReportByName( final String fullFilePathAndName ) throws ResourceException,
    IOException {
    IUnifiedRepository unifiedRepository =
        PentahoSystem.get( IUnifiedRepository.class, PentahoSessionHolder.getSession() );
    RepositoryFile repositoryFile = unifiedRepository.getFile( fullFilePathAndName );
    if ( repositoryFile == null ) {
      throw new IOException( "File " + fullFilePathAndName + " not found in repository" );
    } else {
      return createReport( repositoryFile.getId() );
    }
  }

  public static MasterReport createReport( final Serializable fileId ) throws ResourceException, IOException {
    final ResourceManager resourceManager = new ResourceManager();
    resourceManager.registerDefaults();
    final HashMap helperObjects = new HashMap();
    // add the runtime context so that PentahoResourceData class can get access
    // to the solution repo

    ResourceKey key = null;

    IUnifiedRepository unifiedRepository =
        PentahoSystem.get( IUnifiedRepository.class, PentahoSessionHolder.getSession() );
    RepositoryFile repositoryFile = unifiedRepository.getFileById( fileId );
    if ( repositoryFile != null ) {
      key =
          resourceManager.createKey( RepositoryResourceLoader.SOLUTION_SCHEMA_NAME
              + RepositoryResourceLoader.SCHEMA_SEPARATOR + repositoryFile.getPath(), helperObjects );
    } else {
      key =
          resourceManager.createKey( RepositoryResourceLoader.SOLUTION_SCHEMA_NAME
              + RepositoryResourceLoader.SCHEMA_SEPARATOR + fileId, helperObjects );
    }

    final Resource resource = resourceManager.create( key, null, MasterReport.class );
    return (MasterReport) resource.getResource();
  }

}