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package com.sun.faces.context;

import java.io.OutputStream;
import javax.faces.FacesException;
import javax.faces.application.ProjectStage;
import javax.faces.context.ExternalContext;
import javax.faces.context.FacesContext;
import javax.faces.context.Flash;
import javax.faces.context.PartialResponseWriter;
import javax.faces.context.ResponseWriter;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import javax.servlet.http.Cookie;

import java.io.IOException;
import java.io.InputStream;
import java.io.UnsupportedEncodingException;
import java.io.Writer;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.Collections;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Set;
import java.util.logging.Logger;
import java.util.logging.Level;

import com.sun.faces.RIConstants;
import com.sun.faces.config.WebConfiguration;
import static com.sun.faces.config.WebConfiguration.BooleanWebContextInitParameter.SendPoweredByHeader;
import static com.sun.faces.config.WebConfiguration.BooleanWebContextInitParameter.EnableDistributable;
import com.sun.faces.util.TypedCollections;
import com.sun.faces.util.Util;
import com.sun.faces.util.FacesLogger;
import com.sun.faces.util.MessageUtils;
import com.sun.faces.context.flash.ELFlash;
import javax.faces.FactoryFinder;
import javax.faces.context.FlashFactory;
import javax.faces.lifecycle.ClientWindow;
import javax.faces.render.ResponseStateManager;

/**
 * 

This implementation of {@link ExternalContext} is specific to the * servlet implementation. */ public class ExternalContextImpl extends ExternalContext { private static final Logger LOGGER = FacesLogger.CONTEXT.getLogger(); private ServletContext servletContext = null; private ServletRequest request = null; private ServletResponse response = null; private ClientWindow clientWindow = null; private Map applicationMap = null; private Map sessionMap = null; private Map requestMap = null; private Map requestParameterMap = null; private Map requestParameterValuesMap = null; private Map requestHeaderMap = null; private Map requestHeaderValuesMap = null; private Map cookieMap = null; private Map initParameterMap = null; private Map fallbackContentTypeMap = null; private Flash flash; private boolean distributable; private enum ALLOWABLE_COOKIE_PROPERTIES { domain, maxAge, path, secure, httpOnly } static final Class theUnmodifiableMapClass = Collections.unmodifiableMap(new HashMap()).getClass(); // ------------------------------------------------------------ Constructors public ExternalContextImpl(ServletContext sc, ServletRequest request, ServletResponse response) { // Validate the incoming parameters Util.notNull("sc", sc); Util.notNull("request", request); Util.notNull("response", response); // Save references to our context, request, and response this.servletContext = sc; this.request = request; this.response = response; WebConfiguration config = WebConfiguration.getInstance(sc); if (config.isOptionEnabled(SendPoweredByHeader)) { ((HttpServletResponse) response).addHeader("X-Powered-By", "JSF/2.2"); } distributable = config.isOptionEnabled(EnableDistributable); fallbackContentTypeMap = new HashMap(3, 1.0f); fallbackContentTypeMap.put("js", "text/javascript"); fallbackContentTypeMap.put("css", "text/css"); fallbackContentTypeMap.put("groovy", "application/x-groovy"); fallbackContentTypeMap.put("properties", "text/plain"); } // -------------------------------------------- Methods from ExternalContext /** * @see ExternalContext#getSession(boolean) */ public Object getSession(boolean create) { return (((HttpServletRequest) request).getSession(create)); } @Override public String getSessionId(boolean create) { HttpSession session = null; String id = null; session = (HttpSession)getSession(create); if (null != session) { id = session.getId(); } return id; } /** * @see javax.faces.context.ExternalContext#getContext() */ public Object getContext() { return this.servletContext; } /** * @see javax.faces.context.ExternalContext#getContextName() */ public String getContextName() { if (servletContext.getMajorVersion() >= 3 || (servletContext.getMajorVersion() == 2 && servletContext.getMinorVersion() == 5)) { return this.servletContext.getServletContextName(); } else { // for servlet 2.4 support return servletContext.getServletContextName(); } } /** * @see javax.faces.context.ExternalContext#getRequest() */ public Object getRequest() { return this.request; } /** * @see ExternalContext#setRequest(Object) */ public void setRequest(Object request) { if (request instanceof ServletRequest) { this.request = (ServletRequest) request; requestHeaderMap = null; requestHeaderValuesMap = null; requestHeaderValuesMap = null; requestMap = null; requestParameterMap = null; requestParameterValuesMap = null; } } /** * @see ExternalContext#setRequestCharacterEncoding(String) */ public void setRequestCharacterEncoding(String encoding) throws UnsupportedEncodingException { request.setCharacterEncoding(encoding); } /** * @see javax.faces.context.ExternalContext#getResponse() */ public Object getResponse() { return this.response; } /** * @see ExternalContext#setResponse(Object) */ public void setResponse(Object response) { if (response instanceof ServletResponse) { this.response = (ServletResponse) response; } } @Override public ClientWindow getClientWindow() { return clientWindow; } @Override public void setClientWindow(ClientWindow window) { this.clientWindow = window; } /** * @see ExternalContext#setResponseCharacterEncoding(String) */ public void setResponseCharacterEncoding(String encoding) { response.setCharacterEncoding(encoding); } /** * @see javax.faces.context.ExternalContext#getApplicationMap() */ public Map getApplicationMap() { if (applicationMap == null) { applicationMap = new ApplicationMap(servletContext); } return applicationMap; } @Override public String getApplicationContextPath() { return this.servletContext.getContextPath(); } /** * @see javax.faces.context.ExternalContext#getSessionMap() */ public Map getSessionMap() { if (sessionMap == null) { if (distributable) { sessionMap = new AlwaysPuttingSessionMap((HttpServletRequest) request, FacesContext.getCurrentInstance() .getApplication().getProjectStage()); } else { sessionMap = new SessionMap((HttpServletRequest) request, FacesContext.getCurrentInstance() .getApplication().getProjectStage()); } } return sessionMap; } /** * @see javax.faces.context.ExternalContext#getRequestMap() */ public Map getRequestMap() { if (requestMap == null) { requestMap = new RequestMap(this.request); } return requestMap; } /** * @see javax.faces.context.ExternalContext#getRequestHeaderMap() */ public Map getRequestHeaderMap() { if (null == requestHeaderMap) { requestHeaderMap = Collections.unmodifiableMap( new RequestHeaderMap((HttpServletRequest) request)); } return requestHeaderMap; } /** * @see javax.faces.context.ExternalContext#getRequestHeaderValuesMap() */ public Map getRequestHeaderValuesMap() { if (null == requestHeaderValuesMap) { requestHeaderValuesMap = Collections.unmodifiableMap( new RequestHeaderValuesMap((HttpServletRequest) request)); } return requestHeaderValuesMap; } /** * @see javax.faces.context.ExternalContext#getRequestCookieMap() */ public Map getRequestCookieMap() { if (null == cookieMap) { cookieMap = Collections.unmodifiableMap( new RequestCookieMap((HttpServletRequest) request)); } return cookieMap; } /** * @see javax.faces.context.ExternalContext#getInitParameterMap() */ public Map getInitParameterMap() { if (null == initParameterMap) { initParameterMap = Collections.unmodifiableMap( new InitParameterMap(servletContext)); } return initParameterMap; } /** * @see javax.faces.context.ExternalContext#getRequestParameterMap() */ public Map getRequestParameterMap() { if (null == requestParameterMap) { requestParameterMap = Collections.unmodifiableMap( new RequestParameterMap(request)); } return requestParameterMap; } /** * @see javax.faces.context.ExternalContext#getRequestParameterValuesMap() */ public Map getRequestParameterValuesMap() { if (null == requestParameterValuesMap) { requestParameterValuesMap = Collections.unmodifiableMap( new RequestParameterValuesMap(request)); } return requestParameterValuesMap; } /** * @see javax.faces.context.ExternalContext#getRequestParameterNames() */ public Iterator getRequestParameterNames() { final Enumeration namEnum = request.getParameterNames(); return new Iterator() { public boolean hasNext() { return namEnum.hasMoreElements(); } public String next() { return (String) namEnum.nextElement(); } public void remove() { throw new UnsupportedOperationException(); } }; } /** * @see javax.faces.context.ExternalContext#getRequestLocale() */ public Locale getRequestLocale() { return request.getLocale(); } /** * @see javax.faces.context.ExternalContext#getRequestLocales() */ public Iterator getRequestLocales() { return (new LocalesIterator(request.getLocales())); } /** * @see javax.faces.context.ExternalContext#getRequestPathInfo() */ public String getRequestPathInfo() { return (((HttpServletRequest) request).getPathInfo()); } /** * @see ExternalContext#getRealPath(String) */ @Override public String getRealPath(String path) { return servletContext.getRealPath(path); } /** * @see javax.faces.context.ExternalContext#getRequestContextPath() */ public String getRequestContextPath() { return (((HttpServletRequest) request).getContextPath()); } /** * @see javax.faces.context.ExternalContext#getRequestServletPath() */ public String getRequestServletPath() { return (((HttpServletRequest) request).getServletPath()); } /** * @see javax.faces.context.ExternalContext#getRequestCharacterEncoding() */ @Override public String getRequestCharacterEncoding() { return (request.getCharacterEncoding()); } /** * @see javax.faces.context.ExternalContext#getRequestContentType() */ @Override public String getRequestContentType() { return (request.getContentType()); } /** * @see javax.faces.context.ExternalContext#getRequestContentLength() */ @Override public int getRequestContentLength() { return (request.getContentLength()); } /** * @see javax.faces.context.ExternalContext#getResponseCharacterEncoding() */ @Override public String getResponseCharacterEncoding() { return (response.getCharacterEncoding()); } /** * @see javax.faces.context.ExternalContext#getResponseContentType() */ public String getResponseContentType() { return (response.getContentType()); } /** * @see javax.faces.context.ExternalContext#getInitParameter(String) */ public String getInitParameter(String name) { if (name == null) { throw new NullPointerException("Init parameter name cannot be null"); } return servletContext.getInitParameter(name); } /** * @see javax.faces.context.ExternalContext#getResourcePaths(String) */ public Set getResourcePaths(String path) { if (null == path) { String message = MessageUtils.getExceptionMessageString (MessageUtils.NULL_PARAMETERS_ERROR_MESSAGE_ID, "path"); throw new NullPointerException(message); } return TypedCollections.dynamicallyCastSet(servletContext.getResourcePaths(path), String.class); } /** * @see javax.faces.context.ExternalContext#getResourceAsStream(String) */ public InputStream getResourceAsStream(String path) { if (null == path) { String message = MessageUtils.getExceptionMessageString (MessageUtils.NULL_PARAMETERS_ERROR_MESSAGE_ID, "path"); throw new NullPointerException(message); } return servletContext.getResourceAsStream(path); } /** * @see ExternalContext#getResource(String) */ public URL getResource(String path) { if (null == path) { String message = MessageUtils.getExceptionMessageString (MessageUtils.NULL_PARAMETERS_ERROR_MESSAGE_ID, "path"); throw new NullPointerException(message); } URL url; try { url = servletContext.getResource(path); } catch (MalformedURLException e) { return null; } return url; } /** * @see ExternalContext#encodeActionURL(String) */ public String encodeActionURL(String url) { Util.notNull("url", url); FacesContext context = FacesContext.getCurrentInstance(); ClientWindow cw = context.getExternalContext().getClientWindow(); boolean appendClientWindow = false; if (null != cw) { appendClientWindow = cw.isClientWindowRenderModeEnabled(context); } if (appendClientWindow && -1 == url.indexOf(ResponseStateManager.CLIENT_WINDOW_URL_PARAM)) { if (null != cw) { String clientWindowId = cw.getId(); StringBuilder builder = new StringBuilder(url); int q = url.indexOf(UrlBuilder.QUERY_STRING_SEPARATOR); if (-1 == q) { builder.append(UrlBuilder.QUERY_STRING_SEPARATOR); } else { builder.append(UrlBuilder.PARAMETER_PAIR_SEPARATOR); } builder.append(ResponseStateManager.CLIENT_WINDOW_URL_PARAM).append(UrlBuilder.PARAMETER_NAME_VALUE_SEPARATOR).append(clientWindowId); Map additionalParams = cw.getQueryURLParameters(context); if (null != additionalParams) { for (Map.Entry cur : additionalParams.entrySet()) { builder.append(UrlBuilder.PARAMETER_NAME_VALUE_SEPARATOR); builder.append(cur.getKey()). append(UrlBuilder.PARAMETER_NAME_VALUE_SEPARATOR). append(cur.getValue()); } } url = builder.toString(); } } // If we have a query string, append it return ((HttpServletResponse) response).encodeURL(url); } /** * @see ExternalContext#encodeResourceURL(String) */ public String encodeResourceURL(String url) { if (null == url) { String message = MessageUtils.getExceptionMessageString (MessageUtils.NULL_PARAMETERS_ERROR_MESSAGE_ID, "url"); throw new NullPointerException(message); } return ((HttpServletResponse) response).encodeURL(url); } /** * @see ExternalContext#encodeNamespace(String) */ public String encodeNamespace(String name) { return name; // Do nothing for servlets } /** * @see ExternalContext#dispatch(String) */ public void dispatch(String requestURI) throws IOException, FacesException { RequestDispatcher requestDispatcher = request.getRequestDispatcher( requestURI); if (requestDispatcher == null) { ((HttpServletResponse) response). sendError(HttpServletResponse.SC_NOT_FOUND); return; } try { requestDispatcher.forward(this.request, this.response); } catch (ServletException se) { throw new FacesException(se); } } /** * @see ExternalContext#redirect(String) */ public void redirect(String requestURI) throws IOException { FacesContext ctx = FacesContext.getCurrentInstance(); doLastPhaseActions(ctx, true); if (ctx.getPartialViewContext().isPartialRequest()) { if (getSession(true) instanceof HttpSession && ctx.getResponseComplete()) { throw new IllegalStateException(); } PartialResponseWriter pwriter; ResponseWriter writer = ctx.getResponseWriter(); if (writer instanceof PartialResponseWriter) { pwriter = (PartialResponseWriter) writer; } else { pwriter = ctx.getPartialViewContext().getPartialResponseWriter(); } setResponseContentType("text/xml"); setResponseCharacterEncoding("UTF-8"); addResponseHeader("Cache-Control", "no-cache"); // pwriter.writePreamble("\n"); pwriter.startDocument(); pwriter.redirect(requestURI); pwriter.endDocument(); } else { ((HttpServletResponse) response).sendRedirect(requestURI); } ctx.responseComplete(); } /** * @see ExternalContext#log(String) */ public void log(String message) { if (null == message) { String msg = MessageUtils.getExceptionMessageString (MessageUtils.NULL_PARAMETERS_ERROR_MESSAGE_ID, "message"); throw new NullPointerException(msg); } servletContext.log(message); } /** * @see ExternalContext#log(String, Throwable) */ public void log(String message, Throwable throwable) { if (null == message) { String msg = MessageUtils.getExceptionMessageString (MessageUtils.NULL_PARAMETERS_ERROR_MESSAGE_ID, "message"); throw new NullPointerException(msg); } if (null == throwable) { String msg = MessageUtils.getExceptionMessageString (MessageUtils.NULL_PARAMETERS_ERROR_MESSAGE_ID, "throwable"); throw new NullPointerException(msg); } servletContext.log(message, throwable); } /** * @see javax.faces.context.ExternalContext#getAuthType() */ public String getAuthType() { return ((HttpServletRequest) request).getAuthType(); } /** * @see ExternalContext#getMimeType(String) */ @Override public String getMimeType(String file) { String mimeType = servletContext.getMimeType(file); if (mimeType == null) { mimeType = getFallbackMimeType(file); } FacesContext ctx = FacesContext.getCurrentInstance(); if (mimeType == null && LOGGER.isLoggable(Level.WARNING) && ctx.isProjectStage(ProjectStage.Development) ) { LOGGER.log(Level.WARNING, "jsf.externalcontext.no.mime.type.found", new Object[] { file }); } return mimeType; } /** * @see javax.faces.context.ExternalContext#getRemoteUser() */ public String getRemoteUser() { return ((HttpServletRequest) request).getRemoteUser(); } /** * @see javax.faces.context.ExternalContext#getUserPrincipal() */ public java.security.Principal getUserPrincipal() { return ((HttpServletRequest) request).getUserPrincipal(); } /** * @see javax.faces.context.ExternalContext#isUserInRole(String) */ public boolean isUserInRole(String role) { if (null == role) { String message = MessageUtils.getExceptionMessageString (MessageUtils.NULL_PARAMETERS_ERROR_MESSAGE_ID, "role"); throw new NullPointerException(message); } return ((HttpServletRequest) request).isUserInRole(role); } /** * @see javax.faces.context.ExternalContext#invalidateSession() */ @Override public void invalidateSession() { HttpSession session = ((HttpServletRequest) request).getSession(false); if (session != null) { session.invalidate(); } } /** * @see ExternalContext#addResponseCookie(String, String, java.util.Map) * @param name * @param value * @param properties */ @Override public void addResponseCookie(String name, String value, Map properties) { HttpServletResponse res = (HttpServletResponse) response; Cookie cookie = new Cookie(name, value); if (properties != null && properties.size() != 0) { for (Map.Entry entry : properties.entrySet()) { String key = entry.getKey(); ALLOWABLE_COOKIE_PROPERTIES p = ALLOWABLE_COOKIE_PROPERTIES.valueOf(key); Object v = entry.getValue(); switch (p) { case domain: cookie.setDomain((String) v); break; case maxAge: cookie.setMaxAge((Integer) v); break; case path: cookie.setPath((String) v); break; case secure: cookie.setSecure((Boolean) v); break; case httpOnly: cookie.setHttpOnly((Boolean) v); break; default: throw new IllegalStateException(); // shouldn't happen } } } res.addCookie(cookie); } /** * @see javax.faces.context.ExternalContext#getResponseOutputStream() */ @Override public OutputStream getResponseOutputStream() throws IOException { return response.getOutputStream(); } /** * @see javax.faces.context.ExternalContext#getResponseOutputWriter() */ @Override public Writer getResponseOutputWriter() throws IOException { return response.getWriter(); } /** * @see javax.faces.context.ExternalContext#getRequestScheme() */ @Override public String getRequestScheme() { return request.getScheme(); } /** * @see javax.faces.context.ExternalContext#getRequestServerName() */ @Override public String getRequestServerName() { return request.getServerName(); } /** * @see javax.faces.context.ExternalContext#getRequestServerPort() */ @Override public int getRequestServerPort() { return request.getServerPort(); } /** * @see ExternalContext#setResponseContentType(String) */ @Override public void setResponseContentType(String contentType) { response.setContentType(contentType); } /** * @see ExternalContext#setResponseHeader(String, String) */ @Override public void setResponseHeader(String name, String value) { ((HttpServletResponse) response).setHeader(name, value); } /** * @see ExternalContext#addResponseHeader(String, String) */ @Override public void addResponseHeader(String name, String value) { ((HttpServletResponse) response).addHeader(name, value); } /** * @see javax.faces.context.ExternalContext#setResponseBufferSize(int) */ @Override public void setResponseBufferSize(int size) { response.setBufferSize(size); } /** * @see javax.faces.context.ExternalContext#isResponseCommitted() */ @Override public boolean isResponseCommitted() { return response.isCommitted(); } /** * @see javax.faces.context.ExternalContext#responseReset() */ @Override public void responseReset() { response.reset(); } /** * @see javax.faces.context.ExternalContext#responseSendError(int, String) */ @Override public void responseSendError(int statusCode, String message) throws IOException { if (message == null) { ((HttpServletResponse) response).sendError(statusCode); } else { ((HttpServletResponse) response).sendError(statusCode, message); } } /** * @see javax.faces.context.ExternalContext#setResponseStatus(int) */ @Override public void setResponseStatus(int statusCode) { ((HttpServletResponse) response).setStatus(statusCode); } /** * @see javax.faces.context.ExternalContext#responseFlushBuffer() */ @Override public void responseFlushBuffer() throws IOException { FacesContext facesContext = FacesContext.getCurrentInstance(); if (facesContext != null) { doLastPhaseActions(facesContext, false); } response.flushBuffer(); } /** * @see javax.faces.context.ExternalContext#setResponseContentLength(int) */ @Override public void setResponseContentLength(int length) { response.setContentLength(length); } /** * @see javax.faces.context.ExternalContext#setSessionMaxInactiveInterval(int) */ @Override public void setSessionMaxInactiveInterval(int interval) { HttpSession session = ((HttpServletRequest) request).getSession(); session.setMaxInactiveInterval(interval); } /** * @see javax.faces.context.ExternalContext#getResponseBufferSize() */ @Override public int getResponseBufferSize() { return response.getBufferSize(); } /** * @see javax.faces.context.ExternalContext#getSessionMaxInactiveInterval() \ */ @Override public int getSessionMaxInactiveInterval() { HttpSession session = ((HttpServletRequest) request).getSession(); return session.getMaxInactiveInterval(); } /** * @see javax.faces.context.ExternalContext#isSecure() * @return boolean */ @Override public boolean isSecure() { return ((HttpServletRequest) request).isSecure(); } @Override public String encodeBookmarkableURL(String baseUrl, Map> parameters) { FacesContext context = FacesContext.getCurrentInstance(); String encodingFromContext = (String) context.getAttributes().get(RIConstants.FACELETS_ENCODING_KEY); if (null == encodingFromContext) { encodingFromContext = (String) context.getViewRoot().getAttributes(). get(RIConstants.FACELETS_ENCODING_KEY); } String currentResponseEncoding = (null != encodingFromContext) ? encodingFromContext : getResponseCharacterEncoding(); UrlBuilder builder = new UrlBuilder(baseUrl, currentResponseEncoding); builder.addParameters(parameters); return builder.createUrl(); } @Override public String encodeRedirectURL(String baseUrl, Map> parameters) { FacesContext context = FacesContext.getCurrentInstance(); String encodingFromContext = (String) context.getAttributes().get(RIConstants.FACELETS_ENCODING_KEY); if (null == encodingFromContext) { encodingFromContext = (String) context.getViewRoot().getAttributes(). get(RIConstants.FACELETS_ENCODING_KEY); } String currentResponseEncoding = (null != encodingFromContext) ? encodingFromContext : getResponseCharacterEncoding(); UrlBuilder builder = new UrlBuilder(baseUrl, currentResponseEncoding); builder.addParameters(parameters); return builder.createUrl(); } /** * @see javax.faces.context.ExternalContext#encodePartialActionURL(String) */ @Override public String encodePartialActionURL(String url) { if (null == url) { String message = MessageUtils.getExceptionMessageString (MessageUtils.NULL_PARAMETERS_ERROR_MESSAGE_ID, "url"); throw new NullPointerException(message); } FacesContext context = FacesContext.getCurrentInstance(); String encodingFromContext = (String) context.getAttributes().get(RIConstants.FACELETS_ENCODING_KEY); if (null == encodingFromContext) { encodingFromContext = (String) context.getViewRoot().getAttributes(). get(RIConstants.FACELETS_ENCODING_KEY); } String currentResponseEncoding = (null != encodingFromContext) ? encodingFromContext : getResponseCharacterEncoding(); UrlBuilder builder = new UrlBuilder(url, currentResponseEncoding); return ((HttpServletResponse) response).encodeURL(builder.createUrl()); } @Override public Flash getFlash() { if (null == flash) { FlashFactory ff = (FlashFactory) FactoryFinder.getFactory(FactoryFinder.FLASH_FACTORY); flash = ff.getFlash(true); } return flash; } private void doLastPhaseActions(FacesContext context, boolean outgoingResponseIsRedirect) { Map attrs = context.getAttributes(); try { attrs.put(ELFlash.ACT_AS_DO_LAST_PHASE_ACTIONS, outgoingResponseIsRedirect); getFlash().doPostPhaseActions(context); } finally { attrs.remove(ELFlash.ACT_AS_DO_LAST_PHASE_ACTIONS); } } // --------------------------------------------------------- Private Methods public String getFallbackMimeType(String file) { if (file == null || file.length() == 0) { return null; } int idx = file.lastIndexOf('.'); if (idx == -1) { return null; } String extension = file.substring(idx + 1); if (extension.length() == 0) { return null; } return fallbackContentTypeMap.get(extension); } // ----------------------------------------------------------- Inner Classes private static class LocalesIterator implements Iterator { public LocalesIterator(Enumeration locales) { this.locales = locales; } private Enumeration locales; public boolean hasNext() { return locales.hasMoreElements(); } public Locale next() { return (Locale) locales.nextElement(); } public void remove() { throw new UnsupportedOperationException(); } } }





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