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1 /*
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2 * (c) Copyright IBM Corp 2002, 2005
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3 */
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4
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5 package edu.uga.cs.lsdis.meteors.wadls.util.xml;
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6
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7 import javax.wadls.Application;
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8 import javax.wadls.WADLSException;
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9 import javax.xml.XMLConstants;
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10 import javax.xml.namespace.*;
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11
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12 import org.w3c.dom.*;
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13
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14 public class QNameUtils
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15 {
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16 public static boolean matches(QName qname, Node node)
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17 {
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18 return (node != null && qname.equals(newQName(node)));
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19 }
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20
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21 public static QName newQName(Node node)
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22 {
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23 if (node != null)
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24 {
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25 // System.out.println("node:namespace uri is " + node.getNamespaceURI());
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26 QName q = new QName(node.getNamespaceURI(), node.getLocalName());
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27 //System.out.println("Qname generated is "+q);
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28 return q;
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29
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30 }
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31 else
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32 {
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33 return new QName(null, null);
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34 }
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35 }
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36
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37 public static QName getQName(String prefixedValue,
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38 Element contextEl)
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39 throws WADLSException{
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40 int index = prefixedValue.indexOf(':');
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41 String prefix = (index != -1)
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42 ? prefixedValue.substring(0, index)
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43 : null;
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44 String localPart = prefixedValue.substring(index + 1);
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45 String namespaceURI = DOMUtils.getNamespaceURIFromPrefix(contextEl, prefix);
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46
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47 if (namespaceURI != null)
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48 return new QName(namespaceURI, localPart);
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49 else{
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50 String faultCode = (prefix == null)
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51 ? WADLSException.NO_PREFIX_SPECIFIED
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52 : WADLSException.UNBOUND_PREFIX;
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53
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54 WADLSException wsdlExc = new WADLSException(faultCode,
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55 "Unable to determine " +
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56 "namespace of '" +
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57 prefixedValue + "'.");
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58
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59 wsdlExc.setLocation(XPathUtils.getXPathExprFromNode(contextEl));
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60
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61 throw wsdlExc;
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62 }
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63 }
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64
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65 /**
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66 * Parse a string, return a QName.
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67 * The String can be only in the form of "{namespace}localpart"
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68 * @param qNameAsString
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69 * @return A QName by parsing the given string.
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70 */
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71 public static QName generateQName(String qNameAsString){
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72 return generateQName(qNameAsString, null);
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73 }
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74
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75 /**
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76 * Parse a string, return a QName.
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77 * The String may be in the form of "prefix:localpart" or "{namespace}localpart"
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78 * @param qNameAsString
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79 * @param wsdlDef Wsdl definition for the purpose of getting URI from prefix, and vice versa.
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80 * @return A QName by paring the given string.
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81 */
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82 public static QName generateQName(String qNameAsString, Application wadlApp){
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83 String nsURI = null;
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84 String prefix = null;
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85 String localPart = null;
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86
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87 if (qNameAsString == null) {
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88 throw new IllegalArgumentException("cannot create QName from \"null\" or \"\" String");
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89 }
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90
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91 if (qNameAsString.charAt(0) == '{') { //namespace + localpart
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92 int endOfNamespaceURI = qNameAsString.indexOf('}');
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93 if (endOfNamespaceURI == -1) {
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94 throw new IllegalArgumentException(
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95 "cannot create QName from \""
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96 + qNameAsString
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97 + "\", missing closing \"}\"");
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98 }
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99 else{
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100 nsURI = qNameAsString.substring(1, endOfNamespaceURI);
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101 //get prefix from wsdls definition
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102 if (wadlApp != null)
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103 prefix = wadlApp.getPrefix(nsURI);
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104 localPart = qNameAsString.substring(endOfNamespaceURI + 1);
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105 return new QName(nsURI, localPart, nsURI);
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106 }
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107
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108 }
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109 else{
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110 int endOfPrefix = qNameAsString.indexOf(':'); //try prefix
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111
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112 if (endOfPrefix == -1){ //localpart only, use tagetNamespace from wsdls definition
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113 if (wadlApp != null)
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114 nsURI = wadlApp.getTargetNamespace();
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115 else
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116 nsURI = XMLConstants.NULL_NS_URI;
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117 return new QName(nsURI, qNameAsString);
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118 }
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119 else if (wadlApp != null){ //prefix + localpart
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120 prefix = qNameAsString.substring(1, endOfPrefix);
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121 nsURI = wadlApp.getNamespace(prefix);
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122 localPart = qNameAsString.substring(endOfPrefix + 1);
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123 return new QName(nsURI, localPart, nsURI);
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124 }
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125 else
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126 throw new IllegalArgumentException(
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127 "cannot create QName from \""
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128 + qNameAsString
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129 + "\", no URI and no wsdl definition is given");
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130 }
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131 }
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132 } |
