code.grnet.gr Git - pithos-web-client/blob - src/gr/grnet/pithos/web/client/rest/RestGetCallback.java

   1 /*
   2  *  Copyright (c) 2011 Greek Research and Technology Network
   3  */
   4 package gr.grnet.pithos.web.client.rest;
   5
   6 import com.google.gwt.http.client.Request;
   7 import com.google.gwt.http.client.RequestCallback;
   8 import com.google.gwt.http.client.Response;
   9 import com.google.gwt.user.client.rpc.AsyncCallback;
  10
  11 public abstract class RestGetCallback implements RequestCallback {
  12
  13         private static final int HTTP_OK = 200;
  14
  15         private AsyncCallback callback;
  16         private String path;
  17         private int okcode = -1;
  18
  19         public RestGetCallback(String aPath, AsyncCallback aCallback) {
  20                 callback = aCallback;
  21                 path = aPath;
  22         }
  23
  24         public RestGetCallback(String aPath, AsyncCallback aCallback, int okCode) {
  25                 callback = aCallback;
  26                 path = aPath;
  27                 okcode = okCode;
  28         }
  29
  30         @Override
  31         public void onError(Request request, Throwable exception) {
  32                 callback.onFailure(exception);
  33         }
  34
  35         @Override
  36         public void onResponseReceived(Request request, Response response) {
  37                 try {
  38                         if (okcode == -1 && response.getStatusCode() == HTTP_OK)
  39                                 callback.onSuccess(deserialize(response));
  40                         //this one is only used for trash handling where empty trash has 201 status code
  41                         else if(okcode !=-1 && (response.getStatusCode() == okcode || response.getStatusCode() == HTTP_OK))
  42                                 callback.onSuccess(deserialize(response));
  43                         else
  44                                 callback.onFailure(new RestException(path, response.getStatusCode(), response.getStatusText(), response.getText()));
  45                 } catch (Exception e) {
  46                         callback.onFailure(e);
  47                 }
  48         }
  49
  50         public abstract Object deserialize(Response response);
  51
  52 }