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0
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1 /*
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2 * Created on Apr 10, 2005
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3 *
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4 */
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5 package edu.uga.cs.lsdis.meteors.wadls.util;
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6
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7 import java.util.ArrayList;
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8 import java.util.Iterator;
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9 import java.util.List;
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10 import java.util.Map;
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11
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12 import javax.wadls.Grammars;
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13 import javax.wadls.Params;
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14 import javax.wadls.WADLSException;
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15 import javax.wadls.extensions.schema.Schema;
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16 import javax.xml.namespace.QName;
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17
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18 import org.w3c.dom.DOMException;
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19 import org.w3c.dom.Element;
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20 import org.w3c.dom.Node;
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21 import org.w3c.dom.NodeList;
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22
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23 import edu.uga.cs.lsdis.meteors.wadls.Constants;
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24 import edu.uga.cs.lsdis.meteors.wadls.extensions.schema.SchemaConstants;
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25 import edu.uga.cs.lsdis.meteors.wadls.util.xml.QNameUtils;
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26 import edu.uga.cs.lsdis.meteors.wadls.util.xml.XPathUtils;
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27
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28 /**
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29 * This file is a collection of utilities which find the location of a XML/XSD Element by using the given path.
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30 * @author Zixin Wu
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31 *
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32 */
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33
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34 public class SchemaUtils {
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35
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36 /**
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37 * Search an XML element in the schemas contained in the given Types.
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38 * @param types Search in the schemas contained in this WSDLS Types.
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39 * @param tagName XML Element name of the desired element.
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40 * @param elementName The value of the attribute "name" of the desired element.
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41 * @return An XML element whose XML Element name is "tagName" and whose attribute "name" is "elementName".
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42 * @throws WADLSException
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43 */
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44 public static Element findXMLEleInSchemas(Grammars grammars, String tagName, QName elementName) throws WADLSException{
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45 Map schemas = grammars.getSchemas();
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46 Iterator it = schemas.values().iterator();
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47 while(it.hasNext()){
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48 Schema schema = (Schema)(it.next());
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49 Element schemaEle = schema.getElement();
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50 if (schemaEle.getAttribute(Constants.ATTR_TARGET_NAMESPACE).equals(elementName.getNamespaceURI())){
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51 Element foundEle = findXMLEleByName(schemaEle, tagName, elementName);
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52 if (foundEle != null)
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53 return foundEle;
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54 }
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55 }
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56 return null;
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57 }
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58
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59 /**
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60 * Search the element whose XML Element name is "tagName" and whose attribute "name" is "elementName",
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61 * in the startElement, search in only one level depth.
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62 * @param startElement Start searching from this XML Element.
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63 * @param tagName XML Element name of the desired element.
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64 * @param elementName The value of the attribute "name" of the desired element.
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65 * @return An XML element whose XML Element name is "tagName" and whose attribute "name" is "elementName".
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66 * @throws WADLSException
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67 */
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68 public static Element findXMLEleByName(Element startElement, String tagName, QName elementName) throws WADLSException{
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69 NodeList nodeList = startElement.getChildNodes();
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70 //find the element with the required name as an attribute
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71 int listLength = nodeList.getLength();
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72 for(int i=0;i<listLength;i++){
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73 Node currentNode = nodeList.item(i);
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74 if (currentNode.getNodeType() != Node.ELEMENT_NODE) continue;
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75 Element currentElement = (Element)nodeList.item(i);
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76 //get the "name" attribute
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77 String nameAttr = currentElement.getAttribute(SchemaConstants.ATTR_NAME);
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78 QName qNameAttr = QNameUtils.getQName(nameAttr, currentElement);
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79 //compare both namespaceURI and localname of the "name" attribute
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80 if (elementName == null || qNameAttr.equals(elementName)){
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81 //compare localname of the tag, and check namespace of the tag is XSD
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82 QName currentTagQName = QNameUtils.getQName(currentElement.getTagName(), currentElement);
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83 if (SchemaConstants.XSD_STR_LIST.contains(currentTagQName.getNamespaceURI())
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84 && tagName.equals(currentTagQName.getLocalPart())){
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85 //this is the element we are looking for.
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86 return currentElement;
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87 }
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88 }
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89 }
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90 return null;
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91 }
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92
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93
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94 /**
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95 * Return a list of XSD elements contained in the startElement (XSD Element), search in only 1 level depth.
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96 * @param startElement Start search from this XSD element.
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97 * @param types WSDLS Types
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98 * @return A list of XSD elements contained in the startElement. If no XSD element is contained, the list has 0 element.
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99 * @throws WADLSException
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100 */
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101 public static List listXSDElesInEle(Element startElement, Grammars grammars) throws WADLSException{
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102 String refAttr = startElement.getAttribute(SchemaConstants.ATTR_REF);
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103 if (refAttr != ""){
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104 //look for the referenced element
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105 QName elementQName = QNameUtils.getQName(refAttr, startElement);
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106 Element refenecedElement = findXMLEleInSchemas(grammars, SchemaConstants.ELEM_ELEMENT, elementQName);
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107 if (refenecedElement != null)
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108 return listXSDElesInEle(refenecedElement, grammars);
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109 else{
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110 throw new DOMException(DOMException.NOT_FOUND_ERR, "Cannot find referenced element");
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111 }
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112 }
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113 else{
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114 Element complexElement = null;
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115 String typeAttr = startElement.getAttribute(SchemaConstants.ATTR_TYPE);
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116 if (typeAttr != ""){
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117 //get the QName of typeAttr
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118 QName typeQName = QNameUtils.getQName(typeAttr, startElement);
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119 if (SchemaConstants.XSD_STR_LIST.contains(typeQName.getNamespaceURI()))
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120 //primitive data type
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121 return new ArrayList();
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122 else{
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123 //ComplexType or SimpleType
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124 complexElement = findXMLEleInSchemas(grammars, SchemaConstants.ELEM_COMPLEXTYPE, typeQName);
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125 if (complexElement == null)
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126 //simpleType
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127 return new ArrayList();;
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128 }
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129 }
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130 else{
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131 //No type, look for complexType in the subNodes
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132 complexElement = findXMLEleByName(startElement, SchemaConstants.ELEM_COMPLEXTYPE, null);
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133 if (complexElement == null){
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134 WADLSException wsdlsExc = new WADLSException(WADLSException.NOT_FOUND_ELE_BY_PATH,
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135 "cannot find complexType matching the path");
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136 wsdlsExc.setLocation(XPathUtils.getXPathExprFromNode(startElement));
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137 throw wsdlsExc;
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138 }
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139 }
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140
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141 //we got the complexType element so far.
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142 //we need to collect all the elements
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143 return listXSDElesInComplexType(complexElement);
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144 }
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145 }
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146
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147 public static List listXSDElesInEle(Element startElement, Params params) throws WADLSException{
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148 /*String refAttr = startElement.getAttribute(SchemaConstants.ATTR_REF);
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149 if (refAttr != ""){
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150 //look for the referenced element
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151 QName elementQName = QNameUtils.getQName(refAttr, startElement);
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152 Element refenecedElement = findXMLEleInSchemas(grammars, SchemaConstants.ELEM_ELEMENT, elementQName);
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153 if (refenecedElement != null)
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154 return listXSDElesInEle(refenecedElement, grammars);
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155 else{
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156 throw new DOMException(DOMException.NOT_FOUND_ERR, "Cannot find referenced element");
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157 }
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158 }
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159 else{
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160 Element complexElement = null;
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161 String typeAttr = startElement.getAttribute(SchemaConstants.ATTR_TYPE);
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162 if (typeAttr != ""){
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163 //get the QName of typeAttr
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164 QName typeQName = QNameUtils.getQName(typeAttr, startElement);
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165 if (SchemaConstants.XSD_STR_LIST.contains(typeQName.getNamespaceURI()))
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166 //primitive data type
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167 return new ArrayList();
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168 else{
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169 //ComplexType or SimpleType
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170 complexElement = findXMLEleInSchemas(grammars, SchemaConstants.ELEM_COMPLEXTYPE, typeQName);
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171 if (complexElement == null)
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172 //simpleType
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173 return new ArrayList();;
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174 }
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175 }
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176 else{
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177 //No type, look for complexType in the subNodes
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178 complexElement = findXMLEleByName(startElement, SchemaConstants.ELEM_COMPLEXTYPE, null);
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179 if (complexElement == null){
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180 WADLSException wsdlsExc = new WADLSException(WADLSException.NOT_FOUND_ELE_BY_PATH,
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181 "cannot find complexType matching the path");
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182 wsdlsExc.setLocation(XPathUtils.getXPathExprFromNode(startElement));
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183 throw wsdlsExc;
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184 }
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185 }
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186
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187 //we got the complexType element so far.
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188 //we need to collect all the elements
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189 return listXSDElesInComplexType(complexElement);
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190 }*/
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191
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192 List temp = null;
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193 temp.set(1, startElement);
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194 return temp;
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195
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196 }
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197
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198 /**
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199 * Return a list of XSD elements contained in the complexElement (XSD complexType), search in only 1 level depth.
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200 * @param complexElement Start search from this XSD complexType.
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201 * @return A list of XSD elements contained in the startElement. If no XSD element is contained, the list has 0 element.
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202 * @throws WADLSException
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203 */
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204 public static List listXSDElesInComplexType(Element complexElement) throws WADLSException{
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205 List subElements = new ArrayList();
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206
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207 NodeList subNodes = complexElement.getChildNodes();
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208 int length = subNodes.getLength();
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209 for(int i=0;i<length;i++){
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210 Node currentNode = subNodes.item(i);
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211 if (currentNode.getNodeType() != Node.ELEMENT_NODE) continue;
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212 Element currentElement = (Element)currentNode;
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213 String tagName = currentElement.getTagName();
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214 QName tagQName = QNameUtils.getQName(tagName, currentElement);
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215 String localPart = tagQName.getLocalPart();
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216 if (!SchemaConstants.XSD_STR_LIST.contains(tagQName.getNamespaceURI()))
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217 continue;
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218 if (localPart.equals(SchemaConstants.ELEM_ELEMENT))
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219 subElements.add(currentElement);
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220 else if
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221 (localPart.equals(SchemaConstants.ELEM_ALL)
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222 || localPart.equals(SchemaConstants.ELEM_SEQUENCE)
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223 || localPart.equals(SchemaConstants.ELEM_CHOICE)
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224 || localPart.equals(SchemaConstants.ELEM_COMPLEXCONTENT)
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225 || localPart.equals(SchemaConstants.ELEM_RESTRICTION)
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226 )
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227 //Just skip it, call this method recursively.
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228 subElements.addAll(listXSDElesInComplexType(currentElement));
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229 }
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230 return subElements;
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231 }
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232
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233 /**
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234 * Search an XSD element located by the startElement and path.
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235 * @param startElement Start search from this XSD element.
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236 * @param path
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237 * @param types WSDLS Types
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238 * @return An XSD element
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239 * @throws WADLSException
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240 */
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241 public static Element findXSDEleOnEle(Element startElement, String path, Grammars grammars) throws WADLSException{
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242 String refAttr = startElement.getAttribute(SchemaConstants.ATTR_REF);
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243 if (refAttr != ""){
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244 //look for the referenced element
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245 QName elementQName = QNameUtils.getQName(refAttr, startElement);
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246 Element refenecedElement = findXMLEleInSchemas(grammars, SchemaConstants.ELEM_ELEMENT, elementQName);
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247 if (refenecedElement != null)
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248 return findXSDEleOnEle(refenecedElement, path, grammars);
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249 else{
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250 throw new DOMException(DOMException.NOT_FOUND_ERR, "Cannot find referenced element");
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251 }
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252 }
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253 else{
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254 if (path == "")
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255 return startElement;
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256
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257 String typeAttr = startElement.getAttribute(SchemaConstants.ATTR_TYPE);
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258 if (typeAttr != ""){ //<... type="...">
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259 //get the QName of typeAttr
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260 QName typeQName = QNameUtils.getQName(typeAttr, startElement);
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261 if (SchemaConstants.XSD_STR_LIST.contains(typeQName.getNamespaceURI())){
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262 //primitive data type
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263 WADLSException wsdlsExc = new WADLSException(WADLSException.PATH_ERROR,
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264 "Primitive type cannot has path");
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265 wsdlsExc.setLocation(XPathUtils.getXPathExprFromNode(startElement));
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266 throw wsdlsExc;
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267 }
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268 else{
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269 //find the complexType with the given type QName
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270 Element complexTypeElement = findXMLEleInSchemas(grammars, SchemaConstants.ELEM_COMPLEXTYPE, typeQName);
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271 if (complexTypeElement != null)
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272 return findXSDEleOnComplexType(complexTypeElement, path, grammars);
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273 else
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274 //cannot find in complexType
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275 throw new DOMException(DOMException.NOT_FOUND_ERR, "cannot find complexType by the given path");
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276 }
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277 }
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278 else{
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279 //No type, look for complexType in the subNodes
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280 Element complexElement = findXMLEleByName(startElement, SchemaConstants.ELEM_COMPLEXTYPE, null);
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281 if (complexElement != null)
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282 return findXSDEleOnComplexType(complexElement, path, grammars);
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283 else{
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284 WADLSException wsdlsExc = new WADLSException(WADLSException.NOT_FOUND_ELE_BY_PATH,
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285 "cannot find complexType matching the path");
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286 wsdlsExc.setLocation(XPathUtils.getXPathExprFromNode(startElement));
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287 throw wsdlsExc;
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288 }
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289 }
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290 }
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291 }
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292
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293 public static Element findXSDEleOnEle(Element startElement, String path, Params params) throws WADLSException{
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294 /*String refAttr = startElement.getAttribute(SchemaConstants.ATTR_REF);
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295 if (refAttr != ""){
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296 //look for the referenced element
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297 QName elementQName = QNameUtils.getQName(refAttr, startElement);
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298 Element refenecedElement = findXMLEleInSchemas(params, SchemaConstants.ELEM_ELEMENT, elementQName);
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299 if (refenecedElement != null)
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300 return findXSDEleOnEle(refenecedElement, path, grammars);
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301 else{
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302 throw new DOMException(DOMException.NOT_FOUND_ERR, "Cannot find referenced element");
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303 }
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304 }
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305 else{
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306 if (path == "")
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307 return startElement;
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308
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309 String typeAttr = startElement.getAttribute(SchemaConstants.ATTR_TYPE);
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310 if (typeAttr != ""){ //<... type="...">
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311 //get the QName of typeAttr
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312 QName typeQName = QNameUtils.getQName(typeAttr, startElement);
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313 if (SchemaConstants.XSD_STR_LIST.contains(typeQName.getNamespaceURI())){
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314 //primitive data type
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315 WADLSException wsdlsExc = new WADLSException(WADLSException.PATH_ERROR,
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316 "Primitive type cannot has path");
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317 wsdlsExc.setLocation(XPathUtils.getXPathExprFromNode(startElement));
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318 throw wsdlsExc;
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319 }
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320 else{
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321 //find the complexType with the given type QName
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322 Element complexTypeElement = findXMLEleInSchemas(grammars, SchemaConstants.ELEM_COMPLEXTYPE, typeQName);
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323 if (complexTypeElement != null)
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324 return findXSDEleOnComplexType(complexTypeElement, path, grammars);
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325 else
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326 //cannot find in complexType
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327 throw new DOMException(DOMException.NOT_FOUND_ERR, "cannot find complexType by the given path");
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328 }
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329 }
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330 else{
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331 //No type, look for complexType in the subNodes
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332 Element complexElement = findXMLEleByName(startElement, SchemaConstants.ELEM_COMPLEXTYPE, null);
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333 if (complexElement != null)
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334 return findXSDEleOnComplexType(complexElement, path, grammars);
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335 else{
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336 WADLSException wsdlsExc = new WADLSException(WADLSException.NOT_FOUND_ELE_BY_PATH,
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337 "cannot find complexType matching the path");
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338 wsdlsExc.setLocation(XPathUtils.getXPathExprFromNode(startElement));
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339 throw wsdlsExc;
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340 }
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341 }
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342 }*/
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343 return startElement;
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344 }
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345
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346 /**
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347 * Search an XSD Element from the XSD complexType.
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348 * @param complexTypeElement Start searching from this XSD ComplexType
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349 * @param path
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350 * @param types WSDLS Types
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351 * @return An XSD Element
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352 * @throws WADLSException
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353 */
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354 public static Element findXSDEleOnComplexType(Element complexTypeElement, String path, Grammars grammars) throws WADLSException{
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355 if (path == null || path == "")
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356 return null;
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357 //look for the matching element.
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358 String splitedPath[] = splitPath(path);
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359 String elementName = splitedPath[0];
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360 path = splitedPath[1];
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361 Element targetElement = findXSDEleInComplexType(complexTypeElement, elementName, grammars);
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362 if (targetElement != null)
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363 return findXSDEleOnEle(targetElement, path, grammars);
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364 else{
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365 WADLSException wsdlsExc = new WADLSException(WADLSException.NOT_FOUND_ELE_BY_PATH,
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366 "Cannot find the element matching the path");
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367 wsdlsExc.setLocation(XPathUtils.getXPathExprFromNode(complexTypeElement));
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368 throw wsdlsExc;
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369 }
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370 }
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371
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372 public static Element findXSDEleOnComplexType(Element complexTypeElement, String path, Params params) throws WADLSException{
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373 /*if (path == null || path == "")
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374 return null;
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375 //look for the matching element.
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376 String splitedPath[] = splitPath(path);
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377 String elementName = splitedPath[0];
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378 path = splitedPath[1];
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379 Element targetElement = findXSDEleInComplexType(complexTypeElement, elementName, grammars);
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380 if (targetElement != null)
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381 return findXSDEleOnEle(targetElement, path, grammars);
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382 else{
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383 WADLSException wsdlsExc = new WADLSException(WADLSException.NOT_FOUND_ELE_BY_PATH,
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384 "Cannot find the element matching the path");
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385 wsdlsExc.setLocation(XPathUtils.getXPathExprFromNode(complexTypeElement));
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386 throw wsdlsExc;
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387 }*/
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388 return complexTypeElement;
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389 }
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390
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391 /**
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392 * Search an XSD Element recursively inside of the complexType.
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393 * @param startElement
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394 * @param elementName The desired attribute "name"
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395 * @param types WSDL Types
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396 * @return A XSD Element
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397 * @throws WADLSException
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398 */
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399 public static Element findXSDEleInComplexType(Element startElement, String elementName, Grammars grammars) throws WADLSException{
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400 NodeList subNodes = startElement.getChildNodes();
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401 int length = subNodes.getLength();
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402 for(int i=0;i<length;i++){
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403 Node currentNode = subNodes.item(i);
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404 if (currentNode.getNodeType() != Node.ELEMENT_NODE) continue;
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405 Element currentElement = (Element)currentNode;
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406 String tagName = currentElement.getTagName();
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407 QName tagQName = QNameUtils.getQName(tagName, currentElement);
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408 String localPart = tagQName.getLocalPart();
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409 if (!SchemaConstants.XSD_STR_LIST.contains(tagQName.getNamespaceURI()))
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410 continue;
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411 if (localPart.equals(SchemaConstants.ELEM_ELEMENT)){
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412 String refAttr = currentElement.getAttribute(SchemaConstants.ATTR_REF);
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413 if (refAttr != ""){
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414 if (refAttr.equals(elementName)){ //TODO need to compare the namespaces
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415 //look for the referenced element
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416 QName elementQName = QNameUtils.getQName(refAttr, currentElement);
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417 Element refenecedElement = findXMLEleInSchemas(grammars, SchemaConstants.ELEM_ELEMENT, elementQName);
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418 return refenecedElement;
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|
|
419 }
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|
420 }
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|
|
421 else{
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422 String nameAttr = currentElement.getAttribute(SchemaConstants.ATTR_NAME);
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|
|
423 // if (nameAttr == "") continue;
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|
|
424 if (nameAttr.equals(elementName)) //TODO need to compare the namespaces
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|
|
425 //this is the element we are looking for.
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|
|
426 return currentElement;
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|
|
427 }
|
|
|
428 }
|
|
|
429 else if
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|
|
430 (localPart.equals(SchemaConstants.ELEM_ALL)
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|
|
431 || localPart.equals(SchemaConstants.ELEM_SEQUENCE)
|
|
|
432 || localPart.equals(SchemaConstants.ELEM_CHOICE)
|
|
|
433 || localPart.equals(SchemaConstants.ELEM_COMPLEXCONTENT)
|
|
|
434 || localPart.equals(SchemaConstants.ELEM_RESTRICTION)
|
|
|
435 ){
|
|
|
436 //Just skip it, call this method recursively.
|
|
|
437 return findXSDEleInComplexType(currentElement, elementName, grammars);
|
|
|
438 }
|
|
|
439 else if (localPart.equals(SchemaConstants.ELEM_EXTENSION)){
|
|
|
440 //try to find it inside the <xsd:extension>
|
|
|
441 Element returnElement = findXSDEleInComplexType(currentElement, elementName, grammars);
|
|
|
442 if (returnElement != null)
|
|
|
443 return returnElement;
|
|
|
444 else{
|
|
|
445 String baseAttr = currentElement.getAttribute(SchemaConstants.ATTR_BASE);
|
|
|
446 QName baseQName = QNameUtils.getQName(baseAttr, currentElement);
|
|
|
447 Element baseElement = findXMLEleInSchemas(grammars, SchemaConstants.ELEM_COMPLEXTYPE, baseQName);
|
|
|
448 return findXSDEleInComplexType(baseElement, elementName, grammars);
|
|
|
449 }
|
|
|
450 }
|
|
|
451 else if (localPart.equals(SchemaConstants.ELEM_GROUP)){
|
|
|
452 //find <group>.
|
|
|
453 String refAttr = currentElement.getAttribute(SchemaConstants.ATTR_REF);
|
|
|
454 if (refAttr != ""){
|
|
|
455 //look for the referenced <group>
|
|
|
456 QName groupQName = QNameUtils.getQName(refAttr, currentElement);
|
|
|
457 Element groupElement = findXMLEleInSchemas(grammars, SchemaConstants.ELEM_GROUP, groupQName);
|
|
|
458 if (groupElement != null){
|
|
|
459 //try to find it in the referenced <group>
|
|
|
460 Element returnElement = findXSDEleInComplexType(groupElement, elementName, grammars);
|
|
|
461 if (returnElement != null)
|
|
|
462 return returnElement;
|
|
|
463 else
|
|
|
464 //Not in the referenced <group>
|
|
|
465 continue;
|
|
|
466 }
|
|
|
467 else
|
|
|
468 throw new DOMException(DOMException.NOT_FOUND_ERR, "Cannot find the referenced group");
|
|
|
469 }
|
|
|
470 else
|
|
|
471 //Just skip it, call this method recursively.
|
|
|
472 return findXSDEleInComplexType(currentElement, elementName, grammars);
|
|
|
473 }
|
|
|
474 }
|
|
|
475 return null;
|
|
|
476 }
|
|
|
477
|
|
|
478 /**
|
|
|
479 * return the first schema in the given extensible elements.
|
|
|
480 * @param extElements Search the first schema in this extensible elements.
|
|
|
481 * @return The first schema in the given extensible elements.
|
|
|
482 * @throws WADLSException
|
|
|
483 */
|
|
|
484 public static Schema getFirstSchema(List extElements){
|
|
|
485 if (extElements == null)
|
|
|
486 return null;
|
|
|
487 Object schemaObj = extElements.iterator().next();
|
|
|
488 if (schemaObj == null)
|
|
|
489 return null;
|
|
|
490 /* ExtensibilityElement schemaEE = (ExtensibilityElement) schemaObj;
|
|
|
491 if (SchemaConstants.XSD_QNAME_LIST.contains(schemaEE.getElementType()))
|
|
|
492 return (Schema)schemaObj;
|
|
|
493 else*/
|
|
|
494 return null;
|
|
|
495 }
|
|
|
496
|
|
|
497 /**
|
|
|
498 * return all schemas in the given extensible elements.
|
|
|
499 * @param extElements Search the first schema in this extensible elements.
|
|
|
500 * @return All schemas in the given extensible elements.
|
|
|
501 * @throws WADLSException
|
|
|
502 */
|
|
|
503 public static List getSchemas(List extElements){
|
|
|
504 List schemas = new ArrayList();
|
|
|
505 if (extElements != null){
|
|
|
506 Iterator it = extElements.iterator();
|
|
|
507 while(it.hasNext()){
|
|
|
508 Object schemaObj = it.next();
|
|
|
509 if (schemaObj == null)
|
|
|
510 continue;
|
|
|
511 /*ExtensibilityElement schemaEE = (ExtensibilityElement) schemaObj;
|
|
|
512 if (SchemaConstants.XSD_QNAME_LIST.contains(schemaEE.getElementType()))
|
|
|
513 schemas.add((Schema)schemaObj);*/
|
|
|
514 }
|
|
|
515 }
|
|
|
516 return schemas;
|
|
|
517 }
|
|
|
518
|
|
|
519 /**
|
|
|
520 * This method split the path string, return a string array,
|
|
|
521 * whose first dim is the string before the first '/' ,
|
|
|
522 * and the second dim is the remaining string.
|
|
|
523 * @param path The path to be splitted.
|
|
|
524 * @return The splitted string.
|
|
|
525 */
|
|
|
526 public static String[] splitPath(String path){
|
|
|
527 String returnStr[] = new String[2]; //the string before '/'
|
|
|
528 int slashPosition = path.indexOf('/');
|
|
|
529 if (slashPosition == -1){
|
|
|
530 //no deeper path
|
|
|
531 returnStr[0] = path;
|
|
|
532 returnStr[1] = "";
|
|
|
533 }
|
|
|
534 else{
|
|
|
535 returnStr[0] = path.substring(0, slashPosition);
|
|
|
536 returnStr[1] = path.substring(slashPosition+1);
|
|
|
537 //if the remaining path is "/", empty it.
|
|
|
538 if (returnStr[1] == "/") returnStr[1] = "";
|
|
|
539 }
|
|
|
540 return returnStr;
|
|
|
541 }
|
|
|
542
|
|
|
543 }
|
