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Java > Open Source Codes > org > outerj > daisy > books > store > BookAclBuilder


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.books.store;
17
18 import org.outerj.daisy.books.store.impl.XmlUtil;
19 import org.outerj.daisy.xmlutil.LocalSAXParserFactory;
20 import org.outerx.daisy.x10Bookstoremeta.BookAclDocument;
21 import org.apache.xmlbeans.XmlOptions;
22
23 import java.io.InputStream JavaDoc;
24 import java.io.Reader JavaDoc;
25
26 /**
27  * Builds a BookAcl object from its XML description.
28  */
29 public class BookAclBuilder {
30     public static BookAcl build(InputStream JavaDoc is) throws Exception JavaDoc {
31         try {
32             XmlOptions xmlOptions = new XmlOptions().setLoadUseXMLReader(LocalSAXParserFactory.newXmlReader());
33             BookAclDocument aclDocument = BookAclDocument.Factory.parse(is, xmlOptions);
34             return build(aclDocument);
35         } finally {
36             if (is != null)
37                 is.close();
38         }
39     }
40
41     public static BookAcl build(Reader JavaDoc reader) throws Exception JavaDoc {
42         try {
43             BookAclDocument aclDocument = BookAclDocument.Factory.parse(reader);
44             return build(aclDocument);
45         } finally {
46             if (reader != null)
47                 reader.close();
48         }
49     }
50
51     public static BookAcl build(BookAclDocument aclDocument) throws Exception JavaDoc {
52         String JavaDoc errors = XmlUtil.validate(aclDocument);
53         if (errors != null)
54             throw new Exception JavaDoc("The ACL XML is not valid according to its XML Schema, encountered errors: " + errors);
55
56         BookAclDocument.BookAcl.BookAclEntry[] entriesXml = aclDocument.getBookAcl().getBookAclEntryArray();
57         BookAclEntry[] entries = new BookAclEntry[entriesXml.length];
58         for (int i = 0; i < entriesXml.length; i++) {
59             BookAclSubjectType subjectType = BookAclSubjectType.fromString(entriesXml[i].getSubjectType().toString());
60             BookAclActionType readPermission = BookAclActionType.fromString(entriesXml[i].getPermRead().toString());
61             BookAclActionType managePermission = BookAclActionType.fromString(entriesXml[i].getPermManage().toString());
62             entries[i] = new BookAclEntry(subjectType, entriesXml[i].getSubjectValue(), readPermission, managePermission);
63         }
64
65         return new BookAcl(entries);
66     }
67 }
68
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