public long getLastModified(Resource resource) 
{
         return readLastModified(resource, "getting timestamp");
}

 public synchronized InputStream getResourceStream(String name) throws ResourceNotFoundException 
{
	 if (org.apache.commons.lang.StringUtils.isEmpty(name))
         {
             throw new ResourceNotFoundException ("DataSourceResourceLoader: "
        	     	+ "Template name was empty or null");
         }
         Connection conn = null;
         ResultSet rs = null;
         try
         {
             conn = openDbConnection();
             rs = readData(conn, templateColumn, name);
             if (rs.next())
             {
        	 InputStream ascStream = rs.getAsciiStream(templateColumn);
        	 if (ascStream == null)
        	 {
        	     throw new ResourceNotFoundException("DataSourceResourceLoader: "
        		     + "template column for '" + name + "' is null");
        	 }
        	 return new BufferedInputStream(ascStream);
             }
             else
             {
    	     throw new ResourceNotFoundException("DataSourceResourceLoader: "
		     + "could not find resource '" + name + "'");
             }
         }
         catch(SQLException sqle)
         {
             String msg = "DataSourceResourceLoader: database problem while getting resource '"
                     + name + "': ";
	     log.error(msg, sqle);
             throw new ResourceNotFoundException(msg);
         }
         catch(NamingException ne)
         {
             String msg = "DataSourceResourceLoader: database problem while getting resource '"
                     + name + "': ";
	     log.error(msg, ne);
             throw new ResourceNotFoundException(msg);
         }
         finally
         {
             closeResultSet(rs);
             closeDbConnection(conn);
         }
}

Get an InputStream so that the Runtime can build a template with it.

 public  void init(ExtendedProperties configuration) 
{
         dataSourceName  = StringUtils.nullTrim(configuration.getString("resource.datasource"));
         tableName       = StringUtils.nullTrim(configuration.getString("resource.table"));
         keyColumn       = StringUtils.nullTrim(configuration.getString("resource.keycolumn"));
         templateColumn  = StringUtils.nullTrim(configuration.getString("resource.templatecolumn"));
         timestampColumn = StringUtils.nullTrim(configuration.getString("resource.timestampcolumn"));
         if (dataSource != null)
         {
             if (log.isDebugEnabled())
             {
                 log.debug("DataSourceResourceLoader: using dataSource instance with table \""
                          + tableName + "\"");
                 log.debug("DataSourceResourceLoader: using columns \""
                          + keyColumn + "\", \"" + templateColumn + "\" and \""
                          + timestampColumn + "\"");
             }
             log.trace("DataSourceResourceLoader initialized.");
         }
         else if (dataSourceName != null)
         {
             if (log.isDebugEnabled())
             {
                 log.debug("DataSourceResourceLoader: using \"" + dataSourceName
                          + "\" datasource with table \"" + tableName + "\"");
                 log.debug("DataSourceResourceLoader: using columns \""
                          + keyColumn + "\", \"" + templateColumn + "\" and \""
                          + timestampColumn + "\"");
              }
             log.trace("DataSourceResourceLoader initialized.");
         }
         else
         {
            log.warn("DataSourceResourceLoader not properly initialized. No DataSource was identified.");
         }
}

 public boolean isSourceModified(Resource resource) 
{
         return (resource.getLastModified() !=
                 readLastModified(resource, "checking timestamp"));
}

 public  void setDataSource(DataSource dataSource) 
{
        this.dataSource = dataSource;
}

Set the DataSource used by this resource loader. Call this as an alternative to specifying the data source name via properties.