content: /* ========================================================================
   * JCommon : a free general purpose class library for the Java(tm) platform
   * ========================================================================
   *
   * (C) Copyright 2000-2005, by Object Refinery Limited and Contributors.
   *
   * Project Info:  http://www.jfree.org/jcommon/index.html
   *
   * This library is free software; you can redistribute it and/or modify it
   * under the terms of the GNU Lesser General Public License as published by
   * the Free Software Foundation; either version 2.1 of the License, or
   * (at your option) any later version.
   *
   * This library 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.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301,
   * USA.
   *
   * [Java is a trademark or registered trademark of Sun Microsystems, Inc.
   * in the United States and other countries.]
   *
   * ------------------------------------
   * PropertyFileReportConfiguration.java
   * ------------------------------------
   * (C)opyright 2003, by Thomas Morgner and Contributors.
   *
   * Original Author:  Thomas Morgner;
   * Contributor(s):   David Gilbert (for Object Refinery Limited);
   *
   * $Id: PropertyFileConfiguration.java,v 1.10 2008/09/10 09:17:28 mungady Exp $
   *
   * Changes
   * -------
   * 14-Jan-2003 : Initial version
   */
  package org.jfree.base.config;
  
  import java.io.BufferedInputStream;
  import java.io.IOException;
  import java.io.InputStream;
  import java.util.Properties;
  
  import org.jfree.util.Log;
  import org.jfree.util.ObjectUtilities;
  
  /**
   * A report configuration that reads its values from an arbitary property file.
   *
   * @author Thomas Morgner
   */
  public class PropertyFileConfiguration extends HierarchicalConfiguration
  {
    /**
     * Default constructor.
     */
    public PropertyFileConfiguration() {
        // nothing required
    }
  
    /**
     * Load the properties in the given file.
     *
     * @param resourceName  the file name.
     */
    public void load(final String resourceName)
    {
      load(resourceName, PropertyFileConfiguration.class);
    }
  
    /**
     * Loads the properties stored in the given file. This method does nothing if
     * the file does not exist or is unreadable. Appends the contents of the loaded
     * properties to the already stored contents.
     *
     * @param resourceName the file name of the stored properties.
     * @param resourceSource ?
     */
    public void load(final String resourceName, final Class resourceSource)
    {
      final InputStream in = ObjectUtilities.getResourceRelativeAsStream
              (resourceName, resourceSource);
      if (in != null)
      {
        try
        {
          load(in);
        }
        finally
        {
          try
          {
            in.close();
          }
          catch (IOException e)
          {
            // ignore
          }
        }
      }
      else
      {
        Log.debug ("Configuration file not found in the classpath: " + resourceName);
      }
  
    }
  
    /**
     * Loads the properties stored in the given file. This method does nothing if
     * the file does not exist or is unreadable. Appends the contents of the loaded
     * properties to the already stored contents.
     *
     * @param in the input stream used to read the properties.
     */
    public void load(final InputStream in)
    {
      if (in == null)
      {
        throw new NullPointerException();
      }
  
      try
      {
        final BufferedInputStream bin = new BufferedInputStream(in);
        final Properties p = new Properties();
        p.load(bin);
        this.getConfiguration().putAll(p);
        bin.close();
      }
      catch (IOException ioe)
      {
        Log.warn("Unable to read configuration", ioe);
      }
  
    }
  
  }
  