xmllistattribute.java

这是一个轻便的j2ee的web应用框架,是一个在多个项目中运用的实际框架,采用struts,hebinate,xml等技术,有丰富的tag,role,navigation,session,dictio

/*
 * $Header: /sfroot/cvs/esimple/src/core/org/apache/struts/tiles/xmlDefinition/XmlListAttribute.java,v 1.1.1.1 2004/09/08 06:38:40 lava Exp $
 * $Revision: 1.1.1.1 $
 * $Date: 2004/09/08 06:38:40 $
 *
 * ====================================================================
 *
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 1999-2002 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
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 *    the documentation and/or other materials provided with the
 *    distribution.
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 * 3. The end-user documentation included with the redistribution, if
 *    any, must include the following acknowlegement:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowlegement may appear in the software itself,
 *    if and wherever such third-party acknowlegements normally appear.
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package org.apache.struts.tiles.xmlDefinition;

import java.util.List;
import java.util.ArrayList;


/**
 * An attribute as a <code>List</code>.
 * This attribute associates a name with a list. The list can be found by the
 * property name.
 * Elements in list are retrieved using List methods.
 * This class is used to read configuration files.
 */
public class XmlListAttribute extends XmlAttribute
{
    /** List.
     * We declare a List to avoid cast.
     * Parent "value" property points to the same list.
     */
  private List list;

    /**
     * Constructor.
     */
  public XmlListAttribute()
    {
    list = new ArrayList();
    setValue(list);
    }

    /**
     * Constructor.
     * @param name Name.
     * @param value List.
     */
  public XmlListAttribute( String name, List value)
    {
    super( name, value );
    list = value;
    }

    /**
     * Add an element in list.
     * We use a property to avoid rewriting a new class.
     * @param element XmlAttribute to add.
     */
  public void add( XmlAttribute element )
    {
    list.add( element.getValue() );
    }

    /**
     * Add an element in list.
     * @param value Object to add.
     */
  public void add( Object value )
    {
    //list.add( value );
      // To correct a bug in digester, we need to check the object type
      // Digester doesn't call correct method according to object type ;-(
    if(value instanceof XmlAttribute)
      {
      add((XmlAttribute)value);
      return;
      }
     else
      list.add( value );
    }

    /**
     * Add an element in list.
     * @param value Object to add.
     */
  public void addObject( Object value )
    {
    list.add( value );
    }



}