src/share/jaxws_classes/com/sun/xml/internal/fastinfoset/stax/events/StartElementEvent.java

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1 /*
2 * Copyright (c) 2004, 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 * THIS FILE WAS MODIFIED BY SUN MICROSYSTEMS, INC.
26 */
27
28 package com.sun.xml.internal.fastinfoset.stax.events ;
29
30 import java.util.ArrayList;
31 import java.util.Collection;
32 import java.util.HashMap;
33 import java.util.Iterator;
34 import java.util.List;
35 import java.util.Map;
36
37 import javax.xml.namespace.NamespaceContext;
38 import javax.xml.namespace.QName;
39 import javax.xml.stream.XMLStreamConstants;
40 import javax.xml.stream.events.Attribute;
41 import javax.xml.stream.events.Namespace;
42 import javax.xml.stream.events.StartElement;
43
44
45 public class StartElementEvent extends EventBase implements StartElement {
46
47 private Map _attributes;
48 private List _namespaces;
49 private NamespaceContext _context = null;
50 private QName _qname;
51
52 public void reset() {
53 if (_attributes != null) _attributes.clear();
54 if (_namespaces != null) _namespaces.clear();
55 if (_context != null) _context = null;
56 }
57
58 public StartElementEvent() {
59 init();
60 }
61
62 public StartElementEvent(String prefix, String uri, String localpart) {
63 init();
64 if (uri == null) uri = "";
65 if (prefix == null) prefix ="";
66 _qname = new QName(uri, localpart, prefix);
67 setEventType(START_ELEMENT);
68 }
69
70 public StartElementEvent(QName qname) {
71 init();
72 _qname = qname;
73 }
74
75 public StartElementEvent(StartElement startelement) {
76 this(startelement.getName());
77 addAttributes(startelement.getAttributes());
78 addNamespaces(startelement.getNamespaces());
79 }
80
81 protected void init() {
82 setEventType(XMLStreamConstants.START_ELEMENT);
83 _attributes = new HashMap();
84 _namespaces = new ArrayList();
85 }
86
87 // ---------------------methods defined by StartElement-----------------//
88 /**
89 * Get the name of this event
90 * @return the qualified name of this event
91 */
92 public QName getName() {
93 return _qname;
94 }
95 /**
96 * Returns an Iterator of non-namespace declared attributes
97 * returns an empty iterator if there are no attributes. The
98 * iterator must contain only implementations of the javax.xml.stream.Attribute
99 * interface. Attributes are fundamentally unordered and may not be reported
100 * in any order.
101 *
102 * @return a readonly Iterator over Attribute interfaces, or an
103 * empty iterator
104 */
105 public Iterator getAttributes() {
106 if(_attributes != null){
107 Collection coll = _attributes.values();
108 return new ReadIterator(coll.iterator());
109 }
110 return EmptyIterator.getInstance();
111 }
112
113 /**
114 * Returns an Iterator of namespaces declared on this element.
115 * This Iterator does not contain previously declared namespaces
116 * unless they appear on the current START_ELEMENT.
117 * Therefore this list may contain redeclared namespaces and duplicate namespace
118 * declarations. Use the getNamespaceContext() method to get the
119 * current context of namespace declarations.
120 *
121 * <p>The iterator must contain only implementations of the
122 * javax.xml.stream.Namespace interface.
123 *
124 * <p>A Namespace is an Attribute. One
125 * can iterate over a list of namespaces as a list of attributes.
126 * However this method returns only the list of namespaces
127 * declared on this START_ELEMENT and does not
128 * include the attributes declared on this START_ELEMENT.
129 *
130 * @return a readonly Iterator over Namespace interfaces, or an
131 * empty iterator if there are no namespaces.
132 *
133 */
134 public Iterator getNamespaces() {
135 if(_namespaces != null){
136 return new ReadIterator(_namespaces.iterator());
137 }
138 return EmptyIterator.getInstance();
139 }
140
141 /**
142 * Returns the attribute referred to by this name
143 * @param qname the qname of the desired name
144 * @return the attribute corresponding to the name value or null
145 */
146 public Attribute getAttributeByName(QName qname) {
147 if(qname == null)
148 return null;
149 return (Attribute)_attributes.get(qname);
150 }
151
152 /** Gets a read-only namespace context. If no context is
153 * available this method will return an empty namespace context.
154 * The NamespaceContext contains information about all namespaces
155 * in scope for this StartElement.
156 *
157 * @return the current namespace context
158 */
159 public NamespaceContext getNamespaceContext() {
160 return _context;
161 }
162 // ---------------------end of methods defined by StartElement-----------------//
163
164 public void setName(QName qname) {
165 this._qname = qname;
166 }
167
168
169 public String getNamespace(){
170 return _qname.getNamespaceURI();
171 }
172
173 /**
174 * Gets the value that the prefix is bound to in the
175 * context of this element. Returns null if
176 * the prefix is not bound in this context
177 * @param prefix the prefix to lookup
178 * @return the uri bound to the prefix or null
179 */
180 public String getNamespaceURI(String prefix) {
181 //first check if the URI was supplied when creating this startElement event
182 if( getNamespace() != null ) return getNamespace();
183 //else check the namespace context
184 if(_context != null)
185 return _context.getNamespaceURI(prefix);
186 return null;
187 }
188
189 public String toString() {
190 final StringBuilder sb = new StringBuilder(64);
191
192 sb.append('<').append(nameAsString());
193
194 if(_attributes != null){
195 Iterator it = this.getAttributes();
196 Attribute attr = null;
197 while(it.hasNext()){
198 attr = (Attribute)it.next();
199 sb.append(' ').append(attr.toString());
200 }
201 }
202
203 if(_namespaces != null){
204 Iterator it = _namespaces.iterator();
205 Namespace attr = null;
206 while(it.hasNext()){
207 attr = (Namespace)it.next();
208 sb.append(' ').append(attr.toString());
209 }
210 }
211 sb.append('>');
212 return sb.toString();
213 }
214
215 /** Return this event as String
216 * @return String Event returned as string.
217 */
218 public String nameAsString() {
219 if("".equals(_qname.getNamespaceURI()))
220 return _qname.getLocalPart();
221 if(_qname.getPrefix() != null)
222 return "['" + _qname.getNamespaceURI() + "']:" + _qname.getPrefix() + ":" + _qname.getLocalPart();
223 else
224 return "['" + _qname.getNamespaceURI() + "']:" + _qname.getLocalPart();
225 }
226
227
228 public void setNamespaceContext(NamespaceContext context) {
229 _context = context;
230 }
231
232 public void addAttribute(Attribute attr){
233 _attributes.put(attr.getName(),attr);
234 }
235
236 public void addAttributes(Iterator attrs){
237 if(attrs != null) {
238 while(attrs.hasNext()){
239 Attribute attr = (Attribute)attrs.next();
240 _attributes.put(attr.getName(),attr);
241 }
242 }
243 }
244
245 public void addNamespace(Namespace namespace){
246 if(namespace != null) {
247 _namespaces.add(namespace);
248 }
249 }
250
251 public void addNamespaces(Iterator namespaces){
252 if(namespaces != null) {
253 while(namespaces.hasNext()){
254 Namespace namespace = (Namespace)namespaces.next();
255 _namespaces.add(namespace);
256 }
257 }
258 }
259
260 }

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