001    /*
002     * Copyright (C) 2010 eXo Platform SAS.
003     *
004     * This is free software; you can redistribute it and/or modify it
005     * under the terms of the GNU Lesser General Public License as
006     * published by the Free Software Foundation; either version 2.1 of
007     * the License, or (at your option) any later version.
008     *
009     * This software is distributed in the hope that it will be useful,
010     * but WITHOUT ANY WARRANTY; without even the implied warranty of
011     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012     * Lesser General Public License for more details.
013     *
014     * You should have received a copy of the GNU Lesser General Public
015     * License along with this software; if not, write to the Free
016     * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
017     * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
018     */
019    
020    package org.crsh.plugin;
021    
022    /**
023     * A configuration property.
024     *
025     * @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a>
026     * @version $Revision$
027     */
028    public class Property<T> {
029    
030      /** . */
031      private final PropertyDescriptor<T> desc;
032    
033      /** . */
034      private final T value;
035    
036      public Property(PropertyDescriptor<T> desc, T value) {
037        if (desc == null) {
038          throw new NullPointerException();
039        }
040        if (value == null) {
041          throw new NullPointerException();
042        }
043        if (!desc.type.isInstance(value)) {
044          throw new IllegalArgumentException("Property value is not of correct type " + desc.type);
045        }
046    
047        //
048        this.desc = desc;
049        this.value = value;
050      }
051    
052      public PropertyDescriptor getDescriptor() {
053        return desc;
054      }
055    
056      public T getValue() {
057        return value;
058      }
059    }