root / src / gr / grnet / pithos / web / client / rest / DeleteRequest.java @ 4f5f3706
History | View | Annotate | Download (4.2 kB)
1 |
/*
|
---|---|
2 |
* Copyright 2011-2012 GRNET S.A. All rights reserved.
|
3 |
*
|
4 |
* Redistribution and use in source and binary forms, with or
|
5 |
* without modification, are permitted provided that the following
|
6 |
* conditions are met:
|
7 |
*
|
8 |
* 1. Redistributions of source code must retain the above
|
9 |
* copyright notice, this list of conditions and the following
|
10 |
* disclaimer.
|
11 |
*
|
12 |
* 2. Redistributions in binary form must reproduce the above
|
13 |
* copyright notice, this list of conditions and the following
|
14 |
* disclaimer in the documentation and/or other materials
|
15 |
* provided with the distribution.
|
16 |
*
|
17 |
* THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
|
18 |
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
|
19 |
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
20 |
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
|
21 |
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
22 |
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
|
23 |
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
|
24 |
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
|
25 |
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
26 |
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
27 |
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
28 |
* POSSIBILITY OF SUCH DAMAGE.
|
29 |
*
|
30 |
* The views and conclusions contained in the software and
|
31 |
* documentation are those of the authors and should not be
|
32 |
* interpreted as representing official policies, either expressed
|
33 |
* or implied, of GRNET S.A.
|
34 |
*/
|
35 |
|
36 |
package gr.grnet.pithos.web.client.rest; |
37 |
|
38 |
import gr.grnet.pithos.web.client.foldertree.Resource; |
39 |
|
40 |
import java.util.HashMap; |
41 |
import java.util.Map; |
42 |
|
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; |
49 |
|
50 |
/**
|
51 |
* Created by IntelliJ IDEA. User: chstath Date: 7/5/11 Time: 5:29 PM To change this template use File | Settings | File
|
52 |
* Templates.
|
53 |
*/
|
54 |
public abstract class DeleteRequest implements ScheduledCommand { |
55 |
|
56 |
protected static final int MAX_RETRIES = 3; |
57 |
|
58 |
protected int retries = 0; |
59 |
|
60 |
private String api; |
61 |
|
62 |
protected String owner; |
63 |
|
64 |
private String path; |
65 |
|
66 |
private Map<String, String> headers = new HashMap<String, String>(); |
67 |
|
68 |
public abstract void onSuccess(Resource result); |
69 |
|
70 |
public abstract void onError(Throwable t); |
71 |
|
72 |
public DeleteRequest(String api, String owner, String path) { |
73 |
this.api = api;
|
74 |
this.owner = owner;
|
75 |
this.path = path;
|
76 |
} |
77 |
|
78 |
@Override
|
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)); |
83 |
} |
84 |
try {
|
85 |
builder.sendRequest("", new RestRequestCallback<Resource>(api + owner + path, Response.SC_NO_CONTENT) { |
86 |
@Override
|
87 |
public void onSuccess(Resource object) { |
88 |
DeleteRequest.this.onSuccess(object); |
89 |
} |
90 |
|
91 |
@Override
|
92 |
public Resource deserialize(Response response) {
|
93 |
return Resource.createFromResponse(Resource.class, owner, response, null); |
94 |
} |
95 |
|
96 |
@Override
|
97 |
public void onError(Request request, Throwable throwable) { |
98 |
if (retries >= MAX_RETRIES)
|
99 |
DeleteRequest.this.onError(throwable); |
100 |
else
|
101 |
Scheduler.get().scheduleDeferred(DeleteRequest.this); |
102 |
} |
103 |
|
104 |
@Override
|
105 |
public void onUnauthorized(Response response) { |
106 |
if (retries >= MAX_RETRIES)
|
107 |
DeleteRequest.this.onUnauthorized(response); |
108 |
else
|
109 |
Scheduler.get().scheduleDeferred(DeleteRequest.this); |
110 |
} |
111 |
}); |
112 |
retries++; |
113 |
} |
114 |
catch (RequestException e) {
|
115 |
} |
116 |
} |
117 |
|
118 |
protected abstract void onUnauthorized(Response response); |
119 |
|
120 |
public void setHeader(String header, String value) { |
121 |
headers.put(header, value); |
122 |
} |
123 |
} |