001    /**
002     * Copyright (C) 2009-2011 the original author or authors.
003     * See the notice.md file distributed with this work for additional
004     * information regarding copyright ownership.
005     *
006     * Licensed under the Apache License, Version 2.0 (the "License");
007     * you may not use this file except in compliance with the License.
008     * You may obtain a copy of the License at
009     *
010     *     http://www.apache.org/licenses/LICENSE-2.0
011     *
012     * Unless required by applicable law or agreed to in writing, software
013     * distributed under the License is distributed on an "AS IS" BASIS,
014     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015     * See the License for the specific language governing permissions and
016     * limitations under the License.
017     */
018    
019    package org.fusesource.restygwt.example.client.dispatcher;
020    
021    import java.util.logging.Logger;
022    
023    import org.fusesource.restygwt.client.Method;
024    import org.fusesource.restygwt.client.callback.CallbackFilter;
025    
026    import com.google.gwt.http.client.RequestCallback;
027    import com.google.gwt.http.client.Response;
028    import com.google.gwt.logging.client.LogConfiguration;
029    import com.google.gwt.user.client.Window;
030    
031    public class UnauthorizedCallbackFilter implements CallbackFilter {
032    
033        @Override
034        public RequestCallback filter(Method method, Response response,
035                RequestCallback callback) {     
036            if (response.getStatusCode() == Response.SC_UNAUTHORIZED) {
037                    if (LogConfiguration.loggingIsEnabled()) {
038                        Logger.getLogger(CallbackFilter.class.getName()).severe("Unauthorized: "
039                                + method.builder.getUrl());
040                        Window.Location.assign("login.html" + Window.Location.getQueryString());
041                    }
042                }
043            return callback;
044        }
045    
046    }