src/share/jaxws_classes/com/sun/xml/internal/ws/message/RootElementSniffer.java

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1 /*
2 * Copyright (c) 1997, 2012, 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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package com.sun.xml.internal.ws.message;
27
28 import org.xml.sax.Attributes;
29 import org.xml.sax.SAXException;
30 import org.xml.sax.helpers.DefaultHandler;
31 import org.xml.sax.helpers.AttributesImpl;
32
33 /**
34 * Sniffs the root element name and its attributes from SAX events.
35 *
36 * @author Kohsuke Kawaguchi
37 */
38 public final class RootElementSniffer extends DefaultHandler {
39 private String nsUri = "##error";
40 private String localName = "##error";
41 private Attributes atts;
42
43 private final boolean parseAttributes;
44
45 public RootElementSniffer(boolean parseAttributes) {
46 this.parseAttributes = parseAttributes;
47 }
48
49 public RootElementSniffer() {
50 this(true);
51 }
52
53 public void startElement(String uri, String localName, String qName, Attributes a) throws SAXException {
54 this.nsUri = uri;
55 this.localName = localName;
56
57 if(parseAttributes) {
58 if(a.getLength()==0) // often there's no attribute
59 this.atts = EMPTY_ATTRIBUTES;
60 else
61 this.atts = new AttributesImpl(a);
62 }
63
64 // no need to parse any further.
65 throw aSAXException;
66 }
67
68 public String getNsUri() {
69 return nsUri;
70 }
71
72 public String getLocalName() {
73 return localName;
74 }
75
76 public Attributes getAttributes() {
77 return atts;
78 }
79
80 private static final SAXException aSAXException = new SAXException();
81 private static final Attributes EMPTY_ATTRIBUTES = new AttributesImpl();
82 }

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