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36 package gr.grnet.pithos.web.client.rest;
38 import gr.grnet.pithos.web.client.Resource;
40 import java.util.HashMap;
43 import com.google.gwt.core.client.Scheduler;
44 import com.google.gwt.core.client.Scheduler.ScheduledCommand;
45 import com.google.gwt.http.client.Request;
46 import com.google.gwt.http.client.RequestBuilder;
47 import com.google.gwt.http.client.RequestException;
48 import com.google.gwt.http.client.Response;
51 * Created by IntelliJ IDEA. User: chstath Date: 7/5/11 Time: 5:29 PM To change this template use File | Settings | File
54 public abstract class DeleteRequest implements ScheduledCommand {
56 protected static final int MAX_RETRIES = 3;
58 protected int retries = 0;
62 protected String owner;
66 private Map<String, String> headers = new HashMap<String, String>();
68 public abstract void onSuccess(Resource result);
70 public abstract void onError(Throwable t);
72 public DeleteRequest(String api, String owner, String path) {
79 public void execute() {
80 RequestBuilder builder = new RequestBuilder(RequestBuilder.DELETE, api + owner + path);
81 for (String header : headers.keySet()) {
82 builder.setHeader(header, headers.get(header));
85 builder.sendRequest("", new RestRequestCallback<Resource>(api + owner + path, Response.SC_NO_CONTENT) {
87 public void onSuccess(Resource object) {
88 DeleteRequest.this.onSuccess(object);
92 public Resource deserialize(Response response) {
93 return Resource.createFromResponse(Resource.class, owner, response, null);
97 public void onError(Request request, Throwable throwable) {
98 if (retries >= MAX_RETRIES)
99 DeleteRequest.this.onError(throwable);
101 Scheduler.get().scheduleDeferred(DeleteRequest.this);
105 public void onUnauthorized(Response response) {
106 if (retries >= MAX_RETRIES)
107 DeleteRequest.this.onUnauthorized(response);
109 Scheduler.get().scheduleDeferred(DeleteRequest.this);
114 catch (RequestException e) {
118 protected abstract void onUnauthorized(Response response);
120 public void setHeader(String header, String value) {
121 headers.put(header, value);