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1 /* |
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2 * Copyright (c) 2004, 2012, Oracle and/or its affiliates. All rights reserved. |
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 * |
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5 * This code is free software; you can redistribute it and/or modify it |
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6 * under the terms of the GNU General Public License version 2 only, as |
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7 * published by the Free Software Foundation. Oracle designates this |
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8 * particular file as subject to the "Classpath" exception as provided |
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9 * by Oracle in the LICENSE file that accompanied this code. |
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10 * |
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11 * This code is distributed in the hope that it will be useful, but WITHOUT |
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12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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14 * version 2 for more details (a copy is included in the LICENSE file that |
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15 * accompanied this code). |
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16 * |
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17 * You should have received a copy of the GNU General Public License version |
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18 * 2 along with this work; if not, write to the Free Software Foundation, |
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19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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20 * |
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21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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22 * or visit www.oracle.com if you need additional information or have any |
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23 * questions. |
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24 * |
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25 * THIS FILE WAS MODIFIED BY SUN MICROSYSTEMS, INC. |
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26 */ |
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27 |
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28 package com.sun.xml.internal.fastinfoset.stax.events ; |
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29 |
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30 import java.util.ArrayList; |
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31 import java.util.Collection; |
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32 import java.util.HashMap; |
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33 import java.util.Iterator; |
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34 import java.util.List; |
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35 import java.util.Map; |
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36 |
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37 import javax.xml.namespace.NamespaceContext; |
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38 import javax.xml.namespace.QName; |
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39 import javax.xml.stream.XMLStreamConstants; |
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40 import javax.xml.stream.events.Attribute; |
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41 import javax.xml.stream.events.Namespace; |
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42 import javax.xml.stream.events.StartElement; |
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43 |
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44 |
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45 public class StartElementEvent extends EventBase implements StartElement { |
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46 |
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47 private Map _attributes; |
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48 private List _namespaces; |
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49 private NamespaceContext _context = null; |
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50 private QName _qname; |
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51 |
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52 public void reset() { |
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53 if (_attributes != null) _attributes.clear(); |
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54 if (_namespaces != null) _namespaces.clear(); |
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55 if (_context != null) _context = null; |
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56 } |
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57 |
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58 public StartElementEvent() { |
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59 init(); |
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60 } |
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61 |
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62 public StartElementEvent(String prefix, String uri, String localpart) { |
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63 init(); |
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64 if (uri == null) uri = ""; |
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65 if (prefix == null) prefix =""; |
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66 _qname = new QName(uri, localpart, prefix); |
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67 setEventType(START_ELEMENT); |
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68 } |
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69 |
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70 public StartElementEvent(QName qname) { |
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71 init(); |
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72 _qname = qname; |
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73 } |
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74 |
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75 public StartElementEvent(StartElement startelement) { |
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76 this(startelement.getName()); |
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77 addAttributes(startelement.getAttributes()); |
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78 addNamespaces(startelement.getNamespaces()); |
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79 } |
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80 |
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81 protected void init() { |
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82 setEventType(XMLStreamConstants.START_ELEMENT); |
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83 _attributes = new HashMap(); |
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84 _namespaces = new ArrayList(); |
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85 } |
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86 |
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87 // ---------------------methods defined by StartElement-----------------// |
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88 /** |
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89 * Get the name of this event |
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90 * @return the qualified name of this event |
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91 */ |
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92 public QName getName() { |
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93 return _qname; |
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94 } |
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95 /** |
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96 * Returns an Iterator of non-namespace declared attributes |
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97 * returns an empty iterator if there are no attributes. The |
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98 * iterator must contain only implementations of the javax.xml.stream.Attribute |
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99 * interface. Attributes are fundamentally unordered and may not be reported |
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100 * in any order. |
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101 * |
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102 * @return a readonly Iterator over Attribute interfaces, or an |
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103 * empty iterator |
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104 */ |
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105 public Iterator getAttributes() { |
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106 if(_attributes != null){ |
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107 Collection coll = _attributes.values(); |
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108 return new ReadIterator(coll.iterator()); |
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109 } |
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110 return EmptyIterator.getInstance(); |
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111 } |
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112 |
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113 /** |
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114 * Returns an Iterator of namespaces declared on this element. |
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115 * This Iterator does not contain previously declared namespaces |
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116 * unless they appear on the current START_ELEMENT. |
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117 * Therefore this list may contain redeclared namespaces and duplicate namespace |
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118 * declarations. Use the getNamespaceContext() method to get the |
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119 * current context of namespace declarations. |
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120 * |
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121 * <p>The iterator must contain only implementations of the |
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122 * javax.xml.stream.Namespace interface. |
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123 * |
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124 * <p>A Namespace is an Attribute. One |
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125 * can iterate over a list of namespaces as a list of attributes. |
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126 * However this method returns only the list of namespaces |
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127 * declared on this START_ELEMENT and does not |
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128 * include the attributes declared on this START_ELEMENT. |
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129 * |
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130 * @return a readonly Iterator over Namespace interfaces, or an |
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131 * empty iterator if there are no namespaces. |
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132 * |
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133 */ |
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134 public Iterator getNamespaces() { |
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135 if(_namespaces != null){ |
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136 return new ReadIterator(_namespaces.iterator()); |
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137 } |
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138 return EmptyIterator.getInstance(); |
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139 } |
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140 |
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141 /** |
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142 * Returns the attribute referred to by this name |
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143 * @param qname the qname of the desired name |
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144 * @return the attribute corresponding to the name value or null |
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145 */ |
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146 public Attribute getAttributeByName(QName qname) { |
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147 if(qname == null) |
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148 return null; |
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149 return (Attribute)_attributes.get(qname); |
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150 } |
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151 |
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152 /** Gets a read-only namespace context. If no context is |
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153 * available this method will return an empty namespace context. |
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154 * The NamespaceContext contains information about all namespaces |
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155 * in scope for this StartElement. |
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156 * |
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157 * @return the current namespace context |
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158 */ |
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159 public NamespaceContext getNamespaceContext() { |
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160 return _context; |
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161 } |
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162 // ---------------------end of methods defined by StartElement-----------------// |
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163 |
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164 public void setName(QName qname) { |
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165 this._qname = qname; |
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166 } |
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167 |
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168 |
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169 public String getNamespace(){ |
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170 return _qname.getNamespaceURI(); |
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171 } |
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172 |
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173 /** |
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174 * Gets the value that the prefix is bound to in the |
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175 * context of this element. Returns null if |
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176 * the prefix is not bound in this context |
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177 * @param prefix the prefix to lookup |
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178 * @return the uri bound to the prefix or null |
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179 */ |
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180 public String getNamespaceURI(String prefix) { |
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181 //first check if the URI was supplied when creating this startElement event |
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182 if( getNamespace() != null ) return getNamespace(); |
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183 //else check the namespace context |
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184 if(_context != null) |
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185 return _context.getNamespaceURI(prefix); |
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186 return null; |
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187 } |
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188 |
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189 public String toString() { |
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190 final StringBuilder sb = new StringBuilder(64); |
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191 |
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192 sb.append('<').append(nameAsString()); |
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193 |
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194 if(_attributes != null){ |
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195 Iterator it = this.getAttributes(); |
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196 Attribute attr = null; |
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197 while(it.hasNext()){ |
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198 attr = (Attribute)it.next(); |
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199 sb.append(' ').append(attr.toString()); |
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200 } |
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201 } |
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202 |
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203 if(_namespaces != null){ |
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204 Iterator it = _namespaces.iterator(); |
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205 Namespace attr = null; |
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206 while(it.hasNext()){ |
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207 attr = (Namespace)it.next(); |
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208 sb.append(' ').append(attr.toString()); |
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209 } |
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210 } |
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211 sb.append('>'); |
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212 return sb.toString(); |
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213 } |
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214 |
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215 /** Return this event as String |
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216 * @return String Event returned as string. |
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217 */ |
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218 public String nameAsString() { |
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219 if("".equals(_qname.getNamespaceURI())) |
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220 return _qname.getLocalPart(); |
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221 if(_qname.getPrefix() != null) |
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222 return "['" + _qname.getNamespaceURI() + "']:" + _qname.getPrefix() + ":" + _qname.getLocalPart(); |
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223 else |
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224 return "['" + _qname.getNamespaceURI() + "']:" + _qname.getLocalPart(); |
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225 } |
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226 |
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227 |
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228 public void setNamespaceContext(NamespaceContext context) { |
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229 _context = context; |
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230 } |
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231 |
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232 public void addAttribute(Attribute attr){ |
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233 _attributes.put(attr.getName(),attr); |
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234 } |
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235 |
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236 public void addAttributes(Iterator attrs){ |
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237 if(attrs != null) { |
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238 while(attrs.hasNext()){ |
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239 Attribute attr = (Attribute)attrs.next(); |
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240 _attributes.put(attr.getName(),attr); |
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241 } |
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242 } |
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243 } |
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244 |
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245 public void addNamespace(Namespace namespace){ |
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246 if(namespace != null) { |
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247 _namespaces.add(namespace); |
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248 } |
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249 } |
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250 |
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251 public void addNamespaces(Iterator namespaces){ |
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252 if(namespaces != null) { |
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253 while(namespaces.hasNext()){ |
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254 Namespace namespace = (Namespace)namespaces.next(); |
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255 _namespaces.add(namespace); |
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256 } |
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257 } |
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258 } |
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259 |
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260 } |