PentahoSolutionSpringApplicationContext.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.platform.web.http.context;

import org.apache.commons.io.IOUtils;
import org.pentaho.platform.web.http.PentahoHttpSessionHelper;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.beans.factory.xml.XmlBeanDefinitionReader;
import org.springframework.core.io.FileSystemResource;
import org.springframework.core.io.Resource;
import org.springframework.web.context.support.XmlWebApplicationContext;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.xml.sax.SAXException;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.io.StringReader;
import java.io.StringWriter;

/**
 * Overrides <code>getResourceByPath</code> so that relative paths are relative to the Pentaho solution repository's
 * system directory instead of being relative to servlet context root.
 * 
 * @author mlowery
 */
public class PentahoSolutionSpringApplicationContext extends XmlWebApplicationContext {



  protected Resource getResourceByPath( String path ) {
    Resource resource = null;
    String solutionPath = PentahoHttpSessionHelper.getSolutionPath( getServletContext() );
    if ( solutionPath != null ) {
      File file = new File( solutionPath + File.separator + "system" + File.separator + path ); //$NON-NLS-1$
      resource = new FileSystemResource( file );
    } else {
      resource = super.getResourceByPath( path );
    }

    if( path.endsWith( "pentaho-spring-beans.xml" ) ){
      try {
        InputStream inputStream = resource.getInputStream();
        String string = IOUtils.toString( inputStream, "UTF-8" );
        if( !string.contains( "importExport.xml" ) ) {
          DocumentBuilderFactory documentBuilderFactory = DocumentBuilderFactory.newInstance();
          DocumentBuilder documentBuilder = documentBuilderFactory.newDocumentBuilder();
          Document document = documentBuilder.parse( string );
          Element anImport = document.createElement( "import" );
          anImport.setAttribute( "resource", "importExport.xml" );
          document.getDocumentElement().appendChild( anImport );
        }

      } catch ( IOException e ) {
        e.printStackTrace();
      } catch ( ParserConfigurationException e ) {
        e.printStackTrace();
      } catch ( SAXException e ) {
        e.printStackTrace();
      }

    }

    return resource;
  }

}