characterconverter.java

来自「RESIN 3.2 最新源码」· Java 代码 · 共 79 行

/*
 * Copyright (c) 1998-2008 Caucho Technology -- all rights reserved
 *
 * This file is part of Resin(R) Open Source
 *
 * Each copy or derived work must preserve the copyright notice and this
 * notice unmodified.
 *
 * Resin Open Source is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2
 * as published by the Free Software Foundation.
 *
 * Resin Open Source 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, or any warranty
 * of NON-INFRINGEMENT.  See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Resin Open Source; if not, write to the
 *
 *   Free Software Foundation, Inc.
 *   59 Temple Place, Suite 330
 *   Boston, MA 02111-1307  USA
 *
 * @author Scott Ferguson
 */

package javax.faces.convert;

import javax.faces.context.*;
import javax.faces.component.*;

public class CharacterConverter implements Converter
{
  public static final String CONVERTER_ID
    = "javax.faces.Character";
  public static final String CHARACTER_ID
    = "javax.faces.converter.CharacterConverter.CHARACTER";
  public static final String STRING_ID
    = "javax.faces.converter.STRING";
  
  public Object getAsObject(FacesContext context,
			    UIComponent component,
			    String value)
    throws ConverterException
  {
    // XXX: incorrect
    if (value == null)
      return null;

    value = value.trim();

    if (value.length() == 0)
      return null;

    return new Character(value.charAt(0));
  }
  
  public String getAsString(FacesContext context,
			    UIComponent component,
			    Object value)
    throws ConverterException
  {
    // XXX: incorrect
    if (value == null)
      return "";
    else if (value instanceof String)
      return (String) value;
    else
      return String.valueOf(value);
  }

  public String toString()
  {
    return "ByteConverter[]";
  }
}