settings.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:   Settings.java

package org.apache.struts2.config;

import com.opensymphony.xwork2.ObjectFactory;
import com.opensymphony.xwork2.util.location.Location;
import java.util.*;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

// Referenced classes of package org.apache.struts2.config:
//			DefaultSettings

class Settings
{

	static Settings settingsImpl;
	static Settings defaultImpl;
	static Locale locale;
	private static final Log LOG = LogFactory.getLog(org/apache/struts2/config/Settings);

	Settings()
	{
	}

	public static void setInstance(Settings config)
		throws IllegalStateException
	{
		settingsImpl = config;
		locale = null;
	}

	public static Settings getInstance()
	{
		return settingsImpl != null ? settingsImpl : getDefaultInstance();
	}

	public static Locale getLocale()
	{
		if (locale == null)
			try
			{
				StringTokenizer localeTokens = new StringTokenizer(get("struts.locale"), "_");
				String lang = null;
				String country = null;
				if (localeTokens.hasMoreTokens())
					lang = localeTokens.nextToken();
				if (localeTokens.hasMoreTokens())
					country = localeTokens.nextToken();
				locale = new Locale(lang, country);
			}
			catch (Throwable t)
			{
				LOG.warn("Settings: Could not parse struts.locale setting, substituting default VM locale");
				locale = Locale.getDefault();
			}
		return locale;
	}

	public static boolean isSet(String name)
	{
		return getInstance().isSetImpl(name);
	}

	public static String get(String name)
		throws IllegalArgumentException
	{
		return getInstance().getImpl(name);
	}

	public static Location getLocation(String name)
		throws IllegalArgumentException
	{
		return getInstance().getLocationImpl(name);
	}

	public static Iterator list()
	{
		return getInstance().listImpl();
	}

	public boolean isSetImpl(String name)
	{
		return false;
	}

	public static void set(String name, String value)
		throws IllegalArgumentException, UnsupportedOperationException
	{
		getInstance().setImpl(name, value);
	}

	public void setImpl(String name, String value)
		throws IllegalArgumentException, UnsupportedOperationException
	{
		throw new UnsupportedOperationException("Settings: This implementation does not support setting a value.");
	}

	public String getImpl(String name)
		throws IllegalArgumentException
	{
		return null;
	}

	public Location getLocationImpl(String name)
		throws IllegalArgumentException
	{
		return null;
	}

	public Iterator listImpl()
	{
		throw new UnsupportedOperationException("Settings: This implementation does not support listing the registered settings");
	}

	private static Settings getDefaultInstance()
	{
		if (defaultImpl == null)
		{
			defaultImpl = new DefaultSettings();
			try
			{
				String className = get("struts.configuration");
				if (!className.equals(defaultImpl.getClass().getName()))
					try
					{
						defaultImpl = (Settings)ObjectFactory.getObjectFactory().buildBean(Thread.currentThread().getContextClassLoader().loadClass(className), null);
					}
					catch (Exception e)
					{
						LOG.error("Settings: Could not instantiate the struts.configuration object, substituting the default implementation.", e);
					}
			}
			catch (IllegalArgumentException ex) { }
		}
		return defaultImpl;
	}

	public static void reset()
	{
		defaultImpl = null;
		settingsImpl = null;
	}

}