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1 /* |
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2 * Copyright (c) 1997, 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 |
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26 package com.sun.xml.internal.ws.message.source; |
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27 |
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28 import com.sun.xml.internal.ws.message.RootElementSniffer; |
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29 import com.sun.xml.internal.ws.streaming.SourceReaderFactory; |
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30 import com.sun.xml.internal.ws.util.xml.XmlUtil; |
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31 import org.w3c.dom.Document; |
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32 import org.w3c.dom.Node; |
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33 |
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34 import javax.xml.namespace.QName; |
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35 import javax.xml.stream.XMLStreamConstants; |
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36 import javax.xml.stream.XMLStreamException; |
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37 import javax.xml.stream.XMLStreamReader; |
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38 import javax.xml.stream.XMLStreamWriter; |
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39 import javax.xml.transform.Source; |
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40 import javax.xml.transform.Transformer; |
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41 import javax.xml.transform.TransformerConfigurationException; |
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42 import javax.xml.transform.TransformerException; |
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43 import javax.xml.transform.dom.DOMSource; |
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44 import javax.xml.transform.sax.SAXResult; |
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45 import javax.xml.transform.sax.SAXSource; |
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46 import javax.xml.transform.stream.StreamSource; |
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47 import javax.xml.ws.WebServiceException; |
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48 |
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49 /** |
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50 * |
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51 * @author Vivek Pandey |
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52 */ |
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53 final class SourceUtils { |
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54 |
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55 int srcType; |
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56 |
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57 private static final int domSource = 1; |
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58 private static final int streamSource = 2; |
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59 private static final int saxSource=4; |
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60 |
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61 public SourceUtils(Source src) { |
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62 if(src instanceof StreamSource){ |
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63 srcType = streamSource; |
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64 }else if(src instanceof DOMSource){ |
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65 srcType = domSource; |
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66 }else if(src instanceof SAXSource){ |
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67 srcType = saxSource; |
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68 } |
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69 } |
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70 |
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71 public boolean isDOMSource(){ |
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72 return (srcType&domSource) == domSource; |
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73 } |
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74 |
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75 public boolean isStreamSource(){ |
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76 return (srcType&streamSource) == streamSource; |
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77 } |
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78 |
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79 public boolean isSaxSource(){ |
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80 return (srcType&saxSource) == saxSource; |
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81 } |
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82 |
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83 /** |
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84 * This would peek into the Source (DOMSource and SAXSource) for the localName and NamespaceURI |
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85 * of the top-level element. |
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86 * @param src |
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87 * @return QName of the payload |
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88 */ |
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89 public QName sniff(Source src) { |
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90 return sniff(src, new RootElementSniffer()); |
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91 } |
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92 |
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93 public QName sniff(Source src, RootElementSniffer sniffer){ |
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94 String localName = null; |
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95 String namespaceUri = null; |
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96 |
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97 if(isDOMSource()){ |
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98 DOMSource domSrc = (DOMSource)src; |
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99 Node n = domSrc.getNode(); |
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100 if(n.getNodeType()== Node.DOCUMENT_NODE) { |
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101 n = ((Document)n).getDocumentElement(); |
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102 } |
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103 localName = n.getLocalName(); |
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104 namespaceUri = n.getNamespaceURI(); |
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105 }else if(isSaxSource()){ |
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106 SAXSource saxSrc = (SAXSource)src; |
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107 SAXResult saxResult = new SAXResult(sniffer); |
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108 try { |
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109 Transformer tr = XmlUtil.newTransformer(); |
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110 tr.transform(saxSrc, saxResult); |
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111 } catch (TransformerConfigurationException e) { |
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112 throw new WebServiceException(e); |
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113 } catch (TransformerException e) { |
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114 // if it's due to aborting the processing after the first element, |
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115 // we can safely ignore this exception. |
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116 // |
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117 // if it's due to error in the object, the same error will be reported |
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118 // when the readHeader() method is used, so we don't have to report |
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119 // an error right now. |
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120 localName = sniffer.getLocalName(); |
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121 namespaceUri = sniffer.getNsUri(); |
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122 } |
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123 } |
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124 return new QName(namespaceUri, localName); |
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125 } |
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126 |
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127 public static void serializeSource(Source src, XMLStreamWriter writer) throws XMLStreamException { |
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128 XMLStreamReader reader = SourceReaderFactory.createSourceReader(src, true); |
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129 int state; |
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130 do { |
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131 state = reader.next(); |
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132 switch (state) { |
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133 case XMLStreamConstants.START_ELEMENT: |
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134 /* |
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135 * TODO: Is this necessary, shouldn't zephyr return "" instead of |
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136 * null for getNamespaceURI() and getPrefix()? |
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137 */ |
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138 String uri = reader.getNamespaceURI(); |
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139 String prefix = reader.getPrefix(); |
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140 String localName = reader.getLocalName(); |
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141 |
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142 if (prefix == null) { |
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143 if (uri == null) { |
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144 writer.writeStartElement(localName); |
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145 } else { |
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146 writer.writeStartElement(uri, localName); |
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147 } |
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148 } else { |
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149 // assert uri != null; |
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150 |
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151 if(prefix.length() > 0){ |
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152 /** |
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153 * Before we write the |
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154 */ |
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155 String writerURI = null; |
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156 if (writer.getNamespaceContext() != null) { |
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157 writerURI = writer.getNamespaceContext().getNamespaceURI(prefix); |
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158 } |
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159 String writerPrefix = writer.getPrefix(uri); |
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160 if(declarePrefix(prefix, uri, writerPrefix, writerURI)){ |
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161 writer.writeStartElement(prefix, localName, uri); |
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162 writer.setPrefix(prefix, uri != null ? uri : ""); |
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163 writer.writeNamespace(prefix, uri); |
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164 }else{ |
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165 writer.writeStartElement(prefix, localName, uri); |
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166 } |
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167 }else{ |
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168 writer.writeStartElement(prefix, localName, uri); |
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169 } |
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170 } |
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171 |
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172 int n = reader.getNamespaceCount(); |
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173 // Write namespace declarations |
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174 for (int i = 0; i < n; i++) { |
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175 String nsPrefix = reader.getNamespacePrefix(i); |
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176 if (nsPrefix == null) { |
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177 nsPrefix = ""; |
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178 } |
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179 // StAX returns null for default ns |
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180 String writerURI = null; |
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181 if (writer.getNamespaceContext() != null) { |
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182 writerURI = writer.getNamespaceContext().getNamespaceURI(nsPrefix); |
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183 } |
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184 |
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185 // Zephyr: Why is this returning null? |
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186 // Compare nsPrefix with prefix because of [1] (above) |
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187 String readerURI = reader.getNamespaceURI(i); |
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188 |
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189 /** |
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190 * write the namespace in 3 conditions |
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191 * - when the namespace URI is not bound to the prefix in writer(writerURI == 0) |
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192 * - when the readerPrefix and writerPrefix are "" |
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193 * - when readerPrefix and writerPrefix are not equal and the URI bound to them |
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194 * are different |
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195 */ |
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196 if (writerURI == null || ((nsPrefix.length() == 0) || (prefix.length() == 0)) || |
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197 (!nsPrefix.equals(prefix) && !writerURI.equals(readerURI))) { |
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198 writer.setPrefix(nsPrefix, readerURI != null ? readerURI : ""); |
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199 writer.writeNamespace(nsPrefix, readerURI != null ? readerURI : ""); |
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200 } |
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201 } |
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202 |
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203 // Write attributes |
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204 n = reader.getAttributeCount(); |
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205 for (int i = 0; i < n; i++) { |
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206 String attrPrefix = reader.getAttributePrefix(i); |
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207 String attrURI = reader.getAttributeNamespace(i); |
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208 |
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209 writer.writeAttribute(attrPrefix != null ? attrPrefix : "", |
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210 attrURI != null ? attrURI : "", |
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211 reader.getAttributeLocalName(i), |
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212 reader.getAttributeValue(i)); |
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213 // if the attribute prefix is undeclared in current writer scope then declare it |
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214 setUndeclaredPrefix(attrPrefix, attrURI, writer); |
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215 } |
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216 break; |
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217 case XMLStreamConstants.END_ELEMENT: |
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218 writer.writeEndElement(); |
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219 break; |
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220 case XMLStreamConstants.CHARACTERS: |
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221 writer.writeCharacters(reader.getText()); |
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222 break; |
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223 default: |
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224 break; |
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225 } |
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226 } while (state != XMLStreamConstants.END_DOCUMENT); |
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227 reader.close(); |
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228 } |
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229 |
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230 /** |
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231 * sets undeclared prefixes on the writer |
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232 * @param prefix |
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233 * @param writer |
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234 * @throws XMLStreamException |
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235 */ |
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236 private static void setUndeclaredPrefix(String prefix, String readerURI, XMLStreamWriter writer) throws XMLStreamException { |
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237 String writerURI = null; |
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238 if (writer.getNamespaceContext() != null) { |
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239 writerURI = writer.getNamespaceContext().getNamespaceURI(prefix); |
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240 } |
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241 |
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242 if (writerURI == null) { |
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243 writer.setPrefix(prefix, readerURI != null ? readerURI : ""); |
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244 writer.writeNamespace(prefix, readerURI != null ? readerURI : ""); |
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245 } |
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246 } |
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247 |
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248 /** |
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249 * check if we need to declare |
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250 * @param rPrefix |
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251 * @param rUri |
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252 * @param wPrefix |
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253 * @param wUri |
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254 */ |
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255 private static boolean declarePrefix(String rPrefix, String rUri, String wPrefix, String wUri){ |
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256 if (wUri == null ||((wPrefix != null) && !rPrefix.equals(wPrefix))|| |
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257 (rUri != null && !wUri.equals(rUri))) { |
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258 return true; |
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259 } |
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260 return false; |
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261 } |
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262 } |