1 /*
2 * Copyright (c) 2002, 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23 package test.astro;
24
25 import static jaxp.library.JAXPTestUtilities.USER_DIR;
26 import static jaxp.library.JAXPTestUtilities.filenameToURL;
27 import static org.w3c.dom.ls.DOMImplementationLS.MODE_SYNCHRONOUS;
28 import static org.w3c.dom.traversal.NodeFilter.SHOW_ELEMENT;
29
30 import java.io.ByteArrayInputStream;
31 import java.io.FileReader;
32 import java.io.FileWriter;
33 import java.io.InputStreamReader;
34 import java.io.Reader;
35 import java.nio.file.Files;
36 import java.nio.file.Paths;
37
38 import javax.xml.parsers.DocumentBuilder;
39 import javax.xml.parsers.DocumentBuilderFactory;
40
41 import org.w3c.dom.DOMConfiguration;
42 import org.w3c.dom.Document;
43 import org.w3c.dom.Element;
44 import org.w3c.dom.Node;
45 import org.w3c.dom.ls.DOMImplementationLS;
46 import org.w3c.dom.ls.LSInput;
47 import org.w3c.dom.ls.LSParser;
48 import org.w3c.dom.ls.LSParserFilter;
49 import org.w3c.dom.ls.LSSerializer;
50 import org.w3c.dom.ls.LSSerializerFilter;
51 import org.xml.sax.InputSource;
52
53 /*
54 * A specialized implementation of an Input Source factory that utilizes
55 * DOM Level 3 implementations to build a Document (DOM) from the
56 * astro input file (XML) and then will serialize the DOM. The serialized DOM
57 * of the astro input file is then used to create the sax InputSource
58 * and set it's system id. It is then returned to the caller.
59 *
60 */
61 public class DOML3InputSourceFactoryImpl implements InputSourceFactory {
62 public InputSource newInputSource(String filename) throws Exception {
63 // Create DOMImplementationLS, and DOM L3 LSParser
64 DocumentBuilderFactory fact = DocumentBuilderFactory.newInstance();
65 DocumentBuilder bldr = fact.newDocumentBuilder();
66 DOMImplementationLS impl = (DOMImplementationLS) bldr.getDOMImplementation();
67 LSParser domparser = impl.createLSParser(MODE_SYNCHRONOUS, null);
68 domparser.setFilter(new MyDOMBuilderFilter());
69
70 // Parse the xml document to create the DOM Document using
71 // the DOM L3 LSParser and a LSInput (formerly LSInputSource)
72 Document doc = null;
73 LSInput src = impl.createLSInput();
74 // register the input file with the input source...
75 String systemId = filenameToURL(filename);
76 src.setSystemId(systemId);
77 try (Reader reader = new FileReader(filename)) {
78 src.setCharacterStream(reader);
79 src.setEncoding("UTF-8");
80 doc = domparser.parse(src);
81 }
82
83 // Use DOM L3 LSSerializer (previously called a DOMWriter)
84 // to serialize the xml doc DOM to a file stream.
85 String tmpCatalog = Files.createTempFile(Paths.get(USER_DIR + "/astro"), "catalog.xml", null).toString();
86
87 LSSerializer domserializer = impl.createLSSerializer();
88 domserializer.setFilter(new MyDOMWriterFilter());
89 domserializer.getNewLine();
90 DOMConfiguration config = domserializer.getDomConfig();
91 config.setParameter("xml-declaration", Boolean.TRUE);
92 String result = domserializer.writeToString(doc);
93 try (FileWriter os = new FileWriter(tmpCatalog, false)) {
94 os.write(result);
95 os.flush();
96 }
97
98 // Return the Input Source created from the Serialized DOM L3 Document.
99 InputSource catsrc = new InputSource(new InputStreamReader(new ByteArrayInputStream(Files.readAllBytes(Paths.get(tmpCatalog)))));
100 catsrc.setSystemId(systemId);
101 return catsrc;
102 }
103
104 /*
105 * Implementation of a DOM L3 DOM Builder Filter. The filter is capable of
106 * examining nodes as they are available during the parse. This
107 * implementation both rejects (filters) and modifies particular nodes
108 * during the parse of the document. As such, the document in memory will
109 * become a subset of the document on the stream in accordance with the DOM
110 * Level 3 Load and Save Specification, v1.0, sect. 1.3 Load Interfaces.
111 */
112 private static class MyDOMBuilderFilter implements LSParserFilter {
113
114 /*
115 * Filter the DOM. Define element(s) and their children that should be
116 * efficiently skipped thereby filtering them out of the stream.
117 */
118 @Override
119 public short startElement(Element e) {
120 return "_test01".equals(e.getTagName()) ? FILTER_REJECT : FILTER_ACCEPT;
121 }
122
123 /*
124 * Modify the DOM 'in situ'. Find a particular Node and change the Node
125 * value of its child, allow other nodes to pass through unchanged.
126 */
127 @Override
128 public short acceptNode(Node n) {
129 String localname = n.getLocalName();
130 if (localname.equals("_test-04")) {
131 Node child = n.getFirstChild();
132 String text = child.getNodeValue();
133 if (text.equals("T%e!s#t$")) {
134 child.setNodeValue("T%E!S#T$");
135 }
136 }
137 return FILTER_ACCEPT;
138 }
139
140 /*
141 * Tells the DOMBuilder what types of nodes to show to the filter.
142 */
143 @Override
144 public int getWhatToShow() {
145 return SHOW_ELEMENT;
146 }
147 }
148
149 /*
150 * Implementation of a DOM Serializer Filter (previously called a DOM Writer
151 * Filter) which is a specialization of the NodeFilter interface.
152 */
153 private static class MyDOMWriterFilter implements LSSerializerFilter {
154 public MyDOMWriterFilter() {
155 }
156
157 /*
158 * Must implement method from NodeFilter interface
159 */
160 @Override
161 public short acceptNode(Node node) {
162 return FILTER_ACCEPT;
163 }
164
165 /*
166 * Tells the DOMBuilder what types of nodes to show to the filter.
167 */
168 @Override
169 public int getWhatToShow() {
170 return SHOW_ELEMENT;
171 }
172 }
173 }