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


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.VariantKey;
22 import org.outerj.daisy.repository.VariantKeys;
23 import org.outerj.daisy.repository.acl.AccessManager;
24 import org.outerj.daisy.repository.acl.AclPermission;
25 import org.outerj.daisy.httpconnector.RequestHandler;
26 import org.outerj.daisy.xmlutil.LocalSAXParserFactory;
27 import org.outerx.daisy.x10.VariantKeysDocument;
28 import org.apache.xmlbeans.XmlOptions;
29
30 import java.util.Map JavaDoc;
31
32 public class FilterDocumentsHandler implements RequestHandler {
33     public String JavaDoc getPathPattern() {
34         return "/filterDocuments";
35     }
36
37     public void handleRequest(Map JavaDoc matchMap, HttpRequest request, HttpResponse response, Repository repository) throws Exception JavaDoc {
38         XmlOptions xmlOptions = new XmlOptions().setLoadUseXMLReader(LocalSAXParserFactory.newXmlReader());
39         VariantKeysDocument variantKeysDocument = VariantKeysDocument.Factory.parse(request.getInputStream(), xmlOptions);
40         VariantKey[] variantKeys = VariantKeys.fromXml(variantKeysDocument).getArray();
41
42         // No permission parameter defaults to READ_LIVE permission (for backwards compatibility)
43
String JavaDoc permissionParam = request.getParameter("permission");
44         AclPermission permission = AclPermission.READ_LIVE;
45         if (permissionParam != null)
46             permission = AclPermission.fromString(permissionParam);
47
48         AccessManager accessManager = repository.getAccessManager();
49         VariantKey[] filteredVariantKeys = accessManager.filterDocuments(variantKeys, permission);
50
51         new VariantKeys(filteredVariantKeys).getXml().save(response.getOutputStream());
52         response.commit();
53     }
54 }
55
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