2 * Copyright 2001-2009 Internet2
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
8 * http://www.apache.org/licenses/LICENSE-2.0
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
18 * @file xmltooling/AbstractXMLObject.h
20 * An abstract implementation of XMLObject.
23 #ifndef __xmltooling_abstractxmlobj_h__
24 #define __xmltooling_abstractxmlobj_h__
26 #include <xmltooling/logging.h>
27 #include <xmltooling/XMLObject.h>
28 #include <xmltooling/util/DateTime.h>
30 #if defined (_MSC_VER)
31 #pragma warning( push )
32 #pragma warning( disable : 4250 4251 )
35 namespace xmltooling {
38 * An abstract implementation of XMLObject.
39 * This is the primary concrete base class, and supplies basic namespace,
40 * type, and parent handling. Most implementation classes should not
41 * directly inherit from this class, but rather from the various mixins
42 * that supply the rest of the XMLObject interface, as required.
44 class XMLTOOL_API AbstractXMLObject : public virtual XMLObject
47 virtual ~AbstractXMLObject();
51 const QName& getElementQName() const {
52 return m_elementQname;
55 const std::set<Namespace>& getNamespaces() const {
59 void addNamespace(const Namespace& ns) const;
61 void removeNamespace(const Namespace& ns) {
62 m_namespaces.erase(ns);
65 const QName* getSchemaType() const {
69 const XMLCh* getXMLID() const {
73 xmlconstants::xmltooling_bool_t getNil() const {
77 void nil(xmlconstants::xmltooling_bool_t value) {
79 releaseThisandParentDOM();
84 bool hasParent() const {
85 return m_parent != NULL;
88 XMLObject* getParent() const {
92 void setParent(XMLObject* parent) {
100 * @param nsURI the namespace of the element
101 * @param localName the local name of the XML element this Object represents
102 * @param prefix the namespace prefix to use
103 * @param schemaType the xsi:type to use
106 const XMLCh* nsURI=NULL, const XMLCh* localName=NULL, const XMLCh* prefix=NULL, const QName* schemaType=NULL
109 /** Copy constructor. */
110 AbstractXMLObject(const AbstractXMLObject& src);
113 * A helper function for derived classes, for assignment of strings.
115 * This 'normalizes' newString, and then if it is different from oldString,
116 * it invalidates the DOM, frees the old string, and returns the new.
117 * If not different, it frees the new string and just returns the old value.
119 * @param oldValue the current value
120 * @param newValue the new value
122 * @return the value that should be assigned
124 XMLCh* prepareForAssignment(XMLCh* oldValue, const XMLCh* newValue);
127 * A helper function for derived classes, for assignment of date/time data.
129 * It invalidates the DOM, frees the old object, and returns the new.
131 * @param oldValue the current value
132 * @param newValue the new value
134 * @return the value that should be assigned
136 DateTime* prepareForAssignment(DateTime* oldValue, const DateTime* newValue);
139 * A helper function for derived classes, for assignment of date/time data.
141 * It invalidates the DOM, frees the old object, and returns the new.
143 * @param oldValue the current value
144 * @param newValue the epoch to assign as the new value
145 * @param duration true iff the value is a duration rather than an absolute timestamp
147 * @return the value that should be assigned
149 DateTime* prepareForAssignment(DateTime* oldValue, time_t newValue, bool duration=false);
152 * A helper function for derived classes, for assignment of date/time data.
154 * It invalidates the DOM, frees the old object, and returns the new.
156 * @param oldValue the current value
157 * @param newValue the new value in string form
158 * @param duration true iff the value is a duration rather than an absolute timestamp
160 * @return the value that should be assigned
162 DateTime* prepareForAssignment(DateTime* oldValue, const XMLCh* newValue, bool duration=false);
165 * A helper function for derived classes, for assignment of QName data.
167 * It invalidates the DOM, frees the old object, and returns the new.
169 * @param oldValue the current value
170 * @param newValue the new value
172 * @return the value that should be assigned
174 QName* prepareForAssignment(QName* oldValue, const QName* newValue);
177 * A helper function for derived classes, for assignment of (singleton) XML objects.
179 * It is indifferent to whether either the old or the new version of the value is null.
180 * This method will do a safe compare of the objects and will also invalidate the DOM if appropriate.
181 * Note that since the new value (even if NULL) is always returned, it may be more efficient
182 * to discard the return value and just assign independently if a dynamic cast would be involved.
184 * @param oldValue current value
185 * @param newValue proposed new value
186 * @return the new value
188 * @throws XMLObjectException if the new child already has a parent.
190 XMLObject* prepareForAssignment(XMLObject* oldValue, XMLObject* newValue);
193 * Set of namespaces associated with the object.
195 mutable std::set<Namespace> m_namespaces;
200 logging::Category& m_log;
203 * Stores off xsi:schemaLocation attribute.
205 XMLCh* m_schemaLocation;
208 * Stores off xsi:noNamespaceSchemaLocation attribute.
210 XMLCh* m_noNamespaceSchemaLocation;
213 * Stores off xsi:nil attribute.
215 xmlconstants::xmltooling_bool_t m_nil;
219 QName m_elementQname;
225 #if defined (_MSC_VER)
226 #pragma warning( pop )
229 #endif /* __xmltooling_abstractxmlobj_h__ */