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Java > Open Source Codes > org > outerj > daisy > httpconnector > handlers > CollectionHandler


1 /*
2  * Copyright 2004 Outerthought bvba and Schaubroeck nv
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */

16 package org.outerj.daisy.httpconnector.handlers;
17
18 import org.mortbay.http.HttpRequest;
19 import org.mortbay.http.HttpResponse;
20 import org.outerj.daisy.repository.Repository;
21 import org.outerj.daisy.repository.CollectionManager;
22 import org.outerj.daisy.repository.DocumentCollection;
23 import org.outerj.daisy.repository.RepositoryException;
24 import org.outerj.daisy.httpconnector.RequestHandler;
25 import org.outerj.daisy.httpconnector.HttpUtil;
26 import org.outerj.daisy.xmlutil.LocalSAXParserFactory;
27 import org.outerx.daisy.x10.CollectionDocument;
28 import org.apache.xmlbeans.XmlOptions;
29
30 import java.util.Map JavaDoc;
31
32 public class CollectionHandler implements RequestHandler {
33     public String JavaDoc getPathPattern() {
34         return "/collection/*";
35     }
36
37     public void handleRequest(Map JavaDoc matchMap, HttpRequest request, HttpResponse response, Repository repository) throws Exception JavaDoc {
38         long id = HttpUtil.parseId("collection", (String JavaDoc)matchMap.get("1"));
39         CollectionManager collMan = repository.getCollectionManager();
40
41         if (request.getMethod().equals(HttpRequest.__GET)) {
42             // we receive a GET, so the client wishes to retrieve the collection
43
DocumentCollection docColl = collMan.getCollection(id, true);
44             CollectionDocument docCollXml = docColl.getXml();
45             docCollXml.save(response.getOutputStream());
46             response.commit();
47             return;
48         } else if (request.getMethod().equals(HttpRequest.__POST)) {
49             XmlOptions xmlOptions = new XmlOptions().setLoadUseXMLReader(LocalSAXParserFactory.newXmlReader());
50             CollectionDocument collectionDocument = CollectionDocument.Factory.parse(request.getInputStream(), xmlOptions);
51             CollectionDocument.Collection collectionXml = collectionDocument.getCollection();
52
53             DocumentCollection collection = collMan.getCollection(id, true);
54
55             // check for concurrent modifications
56
if (collection.getUpdateCount() != collectionXml.getUpdatecount())
57                 throw new RepositoryException("The collection was updated concurrently.");
58
59             // update object
60
collection.setName(collectionXml.getName());
61             collection.save();
62
63             collection.getXml().save(response.getOutputStream());
64             response.commit();
65         } else if (request.getMethod().equals(HttpRequest.__DELETE)) {
66             collMan.deleteCollection(id);
67             response.commit();
68             return;
69         } else {
70             response.sendError(HttpResponse.__405_Method_Not_Allowed);
71             return;
72         }
73     }
74 }
75
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