next.interfaces.HTTP.java Source code

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Here is the source code for next.interfaces.HTTP.java

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/*
 * Copyright 2011 Vancouver Ywebb Consulting Ltd
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package next.interfaces;

import next.i.XLog;

import com.google.gwt.http.client.Request;
import com.google.gwt.http.client.RequestBuilder;
import com.google.gwt.http.client.RequestCallback;
import com.google.gwt.http.client.RequestException;
import com.google.gwt.http.client.Response;
import com.google.gwt.http.client.URL;

public class HTTP {

    public static void doGet(String url, ResponseReader responseReader) {

        RequestBuilder builder = new RequestBuilder(RequestBuilder.GET, URL.encode(url));

        try {
            builder.sendRequest(null, new Callback_(responseReader));
        } catch (RequestException e) {
            XLog.err("RequestException: " + e.getMessage());
            responseReader.onError(null, e);
        }
    }

    private static class Callback_ implements RequestCallback {
        ResponseReader reader;

        public Callback_(ResponseReader reader) {
            this.reader = reader;
        }

        public void onError(Request request, Throwable e) {
            reader.onError(null, e);
        }

        public void onResponseReceived(Request request, Response response) {
            if (200 == response.getStatusCode()) {
                reader.onSuccess(response);
            } else {
                // XLog.warn("RequestCallback::onResponseReceived, not supported status '"
                // + response.getStatusCode() + "'");
                reader.onError(response, null);
            }
        }
    }

}