Synnefo » Pithos Web Client

/*

 *  Copyright (c) 2011 Greek Research and Technology Network

 */

package gr.grnet.pithos.web.client.rest;

import com.google.gwt.http.client.Request;

import com.google.gwt.http.client.RequestCallback;

import com.google.gwt.http.client.Response;

import com.google.gwt.user.client.rpc.AsyncCallback;

public abstract class RestGetCallback implements RequestCallback {

        private static final int HTTP_OK = 200;

        private AsyncCallback callback;

        private String path;

        private int okcode = -1;

        public RestGetCallback(String aPath, AsyncCallback aCallback) {

                callback = aCallback;

                path = aPath;

        }

        public RestGetCallback(String aPath, AsyncCallback aCallback, int okCode) {

                callback = aCallback;

                path = aPath;

                okcode = okCode;

        }

        @Override

        public void onError(Request request, Throwable exception) {

                callback.onFailure(exception);

        }

        @Override

        public void onResponseReceived(Request request, Response response) {

                try {

                        if (okcode == -1 && response.getStatusCode() == HTTP_OK)

                                callback.onSuccess(deserialize(response));

                        //this one is only used for trash handling where empty trash has 201 status code

                        else if(okcode !=-1 && (response.getStatusCode() == okcode || response.getStatusCode() == HTTP_OK))

                                callback.onSuccess(deserialize(response));

                        else

                                callback.onFailure(new RestException(path, response.getStatusCode(), response.getStatusText(), response.getText()));

                } catch (Exception e) {

                        callback.onFailure(e);

                }

        }

        public abstract Object deserialize(Response response);

}