2 * Copyright 2001-2009 Internet2
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4 * Licensed under the Apache License, Version 2.0 (the "License");
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5 * you may not use this file except in compliance with the License.
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6 * You may obtain a copy of the License at
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8 * http://www.apache.org/licenses/LICENSE-2.0
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10 * Unless required by applicable law or agreed to in writing, software
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11 * distributed under the License is distributed on an "AS IS" BASIS,
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12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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13 * See the License for the specific language governing permissions and
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14 * limitations under the License.
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18 * @file xmltooling/XMLObjectBuilder.h
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20 * Factory interface for XMLObjects.
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23 #ifndef __xmltooling_xmlobjbuilder_h__
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24 #define __xmltooling_xmlobjbuilder_h__
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26 #include <xmltooling/QName.h>
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27 #include <xmltooling/XMLObject.h>
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28 #include <xmltooling/util/XMLHelper.h>
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33 #if defined (_MSC_VER)
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34 #pragma warning( push )
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35 #pragma warning( disable : 4250 4251 )
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38 namespace xmltooling {
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41 * A factory interface for obtaining XMLObjects.
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42 * Subclasses MAY supply additional factory methods.
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44 class XMLTOOL_API XMLObjectBuilder
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46 MAKE_NONCOPYABLE(XMLObjectBuilder);
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48 virtual ~XMLObjectBuilder() {}
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51 * Creates an empty XMLObject with a particular element name.
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52 * <p>The results are undefined if localName is NULL or empty.
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54 * @param nsURI namespace URI for element
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55 * @param localName local name of element
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56 * @param prefix prefix of element name
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57 * @param schemaType xsi:type of the object
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58 * @return the empty XMLObject
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60 virtual XMLObject* buildObject(
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61 const XMLCh* nsURI, const XMLCh* localName, const XMLCh* prefix=NULL, const QName* schemaType=NULL
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65 * Creates an empty XMLObject with a particular element name.
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67 * @param q QName of element for object
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68 * @return the empty XMLObject
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70 XMLObject* buildFromQName(const QName& q) const {
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71 return buildObject(q.getNamespaceURI(),q.getLocalPart(),q.getPrefix());
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75 * Creates an unmarshalled XMLObject from a DOM Element.
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77 * @param element the unmarshalling source
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78 * @param bindDocument true iff the XMLObject should take ownership of the DOM Document
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79 * @return the unmarshalled XMLObject
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81 XMLObject* buildFromElement(xercesc::DOMElement* element, bool bindDocument=false) const {
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82 std::auto_ptr<XMLObject> ret(
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83 buildObject(element->getNamespaceURI(),element->getLocalName(),element->getPrefix(),XMLHelper::getXSIType(element))
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85 ret->unmarshall(element,bindDocument);
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86 return ret.release();
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90 * Creates an unmarshalled XMLObject from the root of a DOM Document.
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92 * @param doc the unmarshalling source
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93 * @param bindDocument true iff the XMLObject should take ownership of the DOM Document
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94 * @return the unmarshalled XMLObject
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96 XMLObject* buildFromDocument(xercesc::DOMDocument* doc, bool bindDocument=true) const {
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97 return buildFromElement(doc->getDocumentElement(),bindDocument);
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101 * Creates an unmarshalled XMLObject using the default build method, if a builder can be found.
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103 * @param element the unmarshalling source
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104 * @param bindDocument true iff the new XMLObject should take ownership of the DOM Document
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105 * @return the unmarshalled object or NULL if no builder is available
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107 static XMLObject* buildOneFromElement(xercesc::DOMElement* element, bool bindDocument=false) {
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108 const XMLObjectBuilder* b=getBuilder(element);
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109 return b ? b->buildFromElement(element,bindDocument) : NULL;
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113 * Retrieves an XMLObjectBuilder using the key it was registered with.
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115 * @param key the key used to register the builder
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116 * @return the builder or NULL
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118 static const XMLObjectBuilder* getBuilder(const QName& key) {
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119 std::map<QName,XMLObjectBuilder*>::const_iterator i=m_map.find(key);
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120 return (i==m_map.end()) ? NULL : i->second;
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124 * Retrieves an XMLObjectBuilder for a given DOM element.
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125 * If no match is found, the default builder is returned, if any.
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127 * @param element the element for which to locate a builder
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128 * @return the builder or NULL
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130 static const XMLObjectBuilder* getBuilder(const xercesc::DOMElement* element);
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133 * Retrieves the default XMLObjectBuilder for DOM elements
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135 * @return the default builder or NULL
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137 static const XMLObjectBuilder* getDefaultBuilder() {
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142 * Gets an immutable list of all the builders currently registered.
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144 * @return list of all the builders currently registered
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146 static const std::map<QName,XMLObjectBuilder*>& getBuilders() {
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151 * Registers a new builder for the given key.
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153 * @param builderKey the key used to retrieve this builder later
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154 * @param builder the builder
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156 static void registerBuilder(const QName& builderKey, XMLObjectBuilder* builder) {
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157 deregisterBuilder(builderKey);
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158 m_map[builderKey]=builder;
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162 * Registers a default builder
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164 * @param builder the default builder
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166 static void registerDefaultBuilder(XMLObjectBuilder* builder) {
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167 deregisterDefaultBuilder();
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172 * Deregisters a builder.
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174 * @param builderKey the key for the builder to be deregistered
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176 static void deregisterBuilder(const QName& builderKey) {
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177 delete getBuilder(builderKey);
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178 m_map.erase(builderKey);
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182 * Deregisters default builder.
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184 static void deregisterDefaultBuilder() {
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190 * Unregisters and destroys all registered builders.
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192 static void destroyBuilders();
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195 XMLObjectBuilder() {}
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198 static std::map<QName,XMLObjectBuilder*> m_map;
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199 static XMLObjectBuilder* m_default;
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204 #if defined (_MSC_VER)
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205 #pragma warning( pop )
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208 #endif /* __xmltooling_xmlobjbuilder_h__ */
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