001    /*
002     * Copyright © 2008, 2009 Pedro Agulló Soliveres.
003     * 
004     * This file is part of DirectJNgine.
005     *
006     * DirectJNgine is free software: you can redistribute it and/or modify
007     * it under the terms of the GNU General Public License as published by
008     * the Free Software Foundation, either version 3 of the License.
009     *
010     * DirectJNgine is distributed in the hope that it will be useful,
011     * but WITHOUT ANY WARRANTY; without even the implied warranty of
012     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
013     * GNU General Public License for more details.
014     *
015     * You should have received a copy of the GNU General Public License
016     * along with DirectJNgine.  If not, see <http://www.gnu.org/licenses/>.
017     * 
018     * This software uses the ExtJs library (http://extjs.com), which is 
019     * distributed under the GPL v3 license (see http://extjs.com/license).
020     */
021    
022    package com.softwarementors.extjs.djn.servlet;
023    
024    import java.util.List;
025    
026    import com.softwarementors.extjs.djn.DirectJNgineException;
027    import com.softwarementors.extjs.djn.StringUtils;
028    
029    public class ServletConfigurationException extends DirectJNgineException {
030      private ServletConfigurationException( String message ) {
031        super(message);
032        
033        assert !StringUtils.isEmpty(message);
034      }
035    
036      private ServletConfigurationException( String message, Throwable cause ) {
037        super(message, cause);
038        
039        assert !StringUtils.isEmpty(message);
040        assert cause != null;
041      }
042    
043      public static ServletConfigurationException forMissingRequiredConfigurationParameter(List<String> missingParameters) {
044        assert missingParameters != null;    
045        assert !missingParameters.isEmpty();
046        
047        String parameterNames = StringUtils.concatWithSeparator(missingParameters, ", ");
048        return new ServletConfigurationException( "The following servlet configuration parameters are missing: " + parameterNames + ". Please, check your servlet configuration in web.xml." );
049      }
050    
051      public static ServletConfigurationException forClassNotFound(String className, ClassNotFoundException cause) {
052        assert cause != null;
053        
054        return new ServletConfigurationException( "Unable to find class '" + className + "'", cause );
055      }
056    
057    }