iteratorgenerator.java

struts 2 核心包 的源码 有错误是难免的

// Decompiled by Jad v1.5.8e2. Copyright 2001 Pavel Kouznetsov.
// Jad home page: http://kpdus.tripod.com/jad.html
// Decompiler options: packimports(3) fieldsfirst ansi space 
// Source File Name:   IteratorGenerator.java

package org.apache.struts2.util;

import com.opensymphony.xwork2.Action;
import java.util.*;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

public class IteratorGenerator
	implements Iterator, Action
{
	public static interface Converter
	{

		public abstract Object convert(String s)
			throws Exception;
	}


	private static final Log _log = LogFactory.getLog(org/apache/struts2/util/IteratorGenerator);
	List values;
	Object value;
	String separator;
	Converter converter;
	int count;
	int currentCount;

	public IteratorGenerator()
	{
		count = 0;
		currentCount = 0;
	}

	public void setCount(int aCount)
	{
		count = aCount;
	}

	public boolean getHasNext()
	{
		return hasNext();
	}

	public Object getNext()
	{
		return next();
	}

	public void setSeparator(String aChar)
	{
		separator = aChar;
	}

	public void setConverter(Converter aConverter)
	{
		converter = aConverter;
	}

	public void setValues(Object aValue)
	{
		value = aValue;
	}

	public String execute()
	{
		if (value == null)
			return "error";
		values = new ArrayList();
		if (separator != null)
		{
			for (StringTokenizer tokens = new StringTokenizer(value.toString(), separator); tokens.hasMoreTokens();)
			{
				String token = tokens.nextToken().trim();
				if (converter != null)
					try
					{
						Object convertedObj = converter.convert(token);
						values.add(convertedObj);
					}
					catch (Exception e)
					{
						_log.warn((new StringBuilder()).append("unable to convert [").append(token).append("], skipping this token, it will not appear in the generated iterator").toString(), e);
					}
				else
					values.add(token);
			}

		} else
		{
			values.add(value.toString());
		}
		if (count == 0)
			count = values.size();
		return "success";
	}

	public boolean hasNext()
	{
		return value != null ? currentCount < count || count == -1 : false;
	}

	public Object next()
	{
		Object obj = values.get(currentCount % values.size());
		currentCount++;
		return obj;
		Exception exception;
		exception;
		currentCount++;
		throw exception;
	}

	public void remove()
	{
		throw new UnsupportedOperationException("Remove is not supported in IteratorGenerator.");
	}

}