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41 
42 //
43 //  W A R N I N G
44 //  -------------
45 //
46 // This file is not part of the Qt API.  It exists purely as an
47 // implementation detail.  This header file may change from version to
48 // version without notice, or even be removed.
49 //
50 // We mean it.
51 
52 #ifndef Patternist_XsdElement_H
53 #define Patternist_XsdElement_H
54 
55 #include "qschemacomponent_p.h"
56 #include "qschematype_p.h"
57 #include "qxsdalternative_p.h"
58 #include "qxsdidentityconstraint_p.h"
59 #include "qxsdcomplextype_p.h"
60 
61 #include <QtCore/QList>
62 #include <QtCore/QSet>
63 
64 QT_BEGIN_HEADER
65 
66 QT_BEGIN_NAMESPACE
67 
68 namespace QPatternist
69 {
70     /**
71      * @short Represents a XSD element object.
72      *
73      * This class represents the <em>element</em> object of a XML schema as described
74      * <a href="http://www.w3.org/TR/xmlschema11-1/#cElement_Declarations">here</a>.
75      *
76      * It contains information from either a top-level element declaration (as child of a <em>schema</em> object)
77      * or a local element declaration (as descendant of an <em>complexType</em> object).
78      *
79      * @see <a href="http://www.w3.org/Submission/2004/SUBM-xmlschema-api-20040309/xml-schema-api.html#Interface-XSElementDecl">XML Schema API reference</a>
80      * @ingroup Patternist_schema
81      * @author Tobias Koenig <tobias.koenig@nokia.com>
82      */
83     class XsdElement : public XsdTerm
84     {
85         public:
86             typedef QExplicitlySharedDataPointer<XsdElement> Ptr;
87             typedef QList<XsdElement::Ptr> List;
88             typedef QList<XsdElement *> WeakList;
89 
90             /**
91              * Describes the <a href="http://www.w3.org/TR/xmlschema11-1/#ed-value_constraint">constraint type</a> of the element.
92              */
93             enum ConstraintType
94             {
95                 NoneConstraint,     ///< The value of the element has no constraints.
96                 DefaultConstraint,  ///< The element has a default value set.
97                 FixedConstraint     ///< The element has a fixed value set.
98             };
99 
100             /**
101              * Describes the scope of an element.
102              *
103              * @see <a href="http://www.w3.org/TR/xmlschema11-1/#sc_e">Scope Definition</a>
104              */
105             class Scope : public QSharedData
106             {
107                 public:
108                     typedef QExplicitlySharedDataPointer<Scope> Ptr;
109 
110                     /**
111                      * Describes the <a href="http://www.w3.org/TR/xmlschema11-1/#ad-scope">scope</a> of an attribute.
112                      */
113                     enum Variety
114                     {
115                         Global,    ///< The element is defined globally as child of the <em>schema</em> object.
116                         Local      ///< The element is defined locally as child of a complex type or model group definition.
117                     };
118 
119                     /**
120                      * Sets the @p variety of the element scope.
121                      */
122                     void setVariety(Variety variety);
123 
124                     /**
125                      * Returns the variety of the element scope.
126                      */
127                     Variety variety() const;
128 
129                     /**
130                      * Sets the @p parent complex type or model group definition of the element scope.
131                      */
132                     void setParent(const NamedSchemaComponent::Ptr &parent);
133 
134                     /**
135                      * Returns the parent complex type or model group definition of the element scope.
136                      */
137                     NamedSchemaComponent::Ptr parent() const;
138 
139                 private:
140                     Variety                   m_variety;
141                     NamedSchemaComponent      *m_parent;
142             };
143 
144             /**
145              * Describes a type table of an element.
146              *
147              * @see <a href="http://www.w3.org/TR/xmlschema11-1/#tt">Type Table Definition</a>
148              */
149             class TypeTable : public QSharedData
150             {
151                 public:
152                     typedef QExplicitlySharedDataPointer<TypeTable> Ptr;
153 
154                     /**
155                      * Adds an @p alternative to the type table.
156                      */
157                     void addAlternative(const XsdAlternative::Ptr &alternative);
158 
159                     /**
160                      * Returns the alternatives of the type table.
161                      */
162                     XsdAlternative::List alternatives() const;
163 
164                     /**
165                      * Sets the default @p type definition.
166                      */
167                     void setDefaultTypeDefinition(const XsdAlternative::Ptr &type);
168 
169                     /**
170                      * Returns the default type definition.
171                      */
172                     XsdAlternative::Ptr defaultTypeDefinition() const;
173 
174                 private:
175                     XsdAlternative::List m_alternatives;
176                     XsdAlternative::Ptr  m_defaultTypeDefinition;
177             };
178 
179 
180             /**
181              * Describes the value constraint of an element.
182              *
183              * @see <a href="http://www.w3.org/TR/xmlschema11-1/#vc_e">Value Constraint Definition</a>
184              */
185             class ValueConstraint : public QSharedData
186             {
187                 public:
188                     typedef QExplicitlySharedDataPointer<ValueConstraint> Ptr;
189 
190                     /**
191                      * Describes the <a href="http://www.w3.org/TR/xmlschema11-1/#ed-value_constraint">value constraint</a> of an element.
192                      */
193                     enum Variety
194                     {
195                         Default,  ///< The element has a default value set.
196                         Fixed     ///< The element has a fixed value set.
197                     };
198 
199                     /**
200                      * Sets the @p variety of the element value constraint.
201                      */
202                     void setVariety(Variety variety);
203 
204                     /**
205                      * Returns the variety of the element value constraint.
206                      */
207                     Variety variety() const;
208 
209                     /**
210                      * Sets the @p value of the constraint.
211                      */
212                     void setValue(const QString &value);
213 
214                     /**
215                      * Returns the value of the constraint.
216                      */
217                     QString value() const;
218 
219                     /**
220                      * Sets the lexical @p form of the constraint.
221                      */
222                     void setLexicalForm(const QString &form);
223 
224                     /**
225                      * Returns the lexical form of the constraint.
226                      */
227                     QString lexicalForm() const;
228 
229                 private:
230                     Variety m_variety;
231                     QString m_value;
232                     QString m_lexicalForm;
233             };
234 
235             /**
236              * Creates a new element object.
237              */
238             XsdElement();
239 
240             /**
241              * Always returns @c true, used to avoid dynamic casts.
242              */
243             virtual bool isElement() const;
244 
245             /**
246              * Sets the @p type of the element.
247              *
248              * @see <a href="http://www.w3.org/TR/xmlschema11-1/#ed-type_definition">Type Definition</a>
249              */
250             void setType(const SchemaType::Ptr &type);
251 
252             /**
253              * Returns the type of the element.
254              */
255             SchemaType::Ptr type() const;
256 
257             /**
258              * Sets the @p scope of the element.
259              *
260              * @see <a href="http://www.w3.org/TR/xmlschema11-1/#ed-scope">Scope Definition</a>
261              */
262             void setScope(const Scope::Ptr &scope);
263 
264             /**
265              * Returns the scope of the element.
266              */
267             Scope::Ptr scope() const;
268 
269             /**
270              * Sets the value @p constraint of the element.
271              *
272              * @see <a href="http://www.w3.org/TR/xmlschema11-1/#ed-value_constraint">Value Constraint Definition</a>
273              */
274             void setValueConstraint(const ValueConstraint::Ptr &constraint);
275 
276             /**
277              * Returns the value constraint of the element.
278              */
279             ValueConstraint::Ptr valueConstraint() const;
280 
281             /**
282              * Sets the type table of the element.
283              *
284              * @see <a href="http://www.w3.org/TR/xmlschema11-1/#ed-type_table">Type Table Definition</a>
285              */
286             void setTypeTable(const TypeTable::Ptr &table);
287 
288             /**
289              * Returns the type table of the element.
290              */
291             TypeTable::Ptr typeTable() const;
292 
293             /**
294              * Sets whether the element is @p abstract.
295              *
296              * @see <a href="http://www.w3.org/TR/xmlschema11-1/#ed-abstract">Abstract Definition</a>
297              */
298             void setIsAbstract(bool abstract);
299 
300             /**
301              * Returns whether the element is abstract.
302              */
303             bool isAbstract() const;
304 
305             /**
306              * Sets whether the element is @p nillable.
307              *
308              * @see <a href="http://www.w3.org/TR/xmlschema11-1/#ed-nillable">Nillable Definition</a>
309              */
310             void setIsNillable(bool nillable);
311 
312             /**
313              * Returns whether the element is nillable.
314              */
315             bool isNillable() const;
316 
317             /**
318              * Sets the disallowed @p substitutions of the element.
319              *
320              * Only ExtensionConstraint, RestrictionConstraint and SubstitutionConstraint are allowed.
321              *
322              * @see <a href="http://www.w3.org/TR/xmlschema11-1/#ed-disallowed_substitutions">Disallowed Substitutions Definition</a>
323              */
324             void setDisallowedSubstitutions(const BlockingConstraints &substitutions);
325 
326             /**
327              * Returns the disallowed substitutions of the element.
328              */
329             BlockingConstraints disallowedSubstitutions() const;
330 
331             /**
332              * Sets the substitution group @p exclusions of the element.
333              *
334              * Only SchemaType::ExtensionConstraint and SchemaType::RestrictionConstraint are allowed.
335              *
336              * @see <a href="http://www.w3.org/TR/xmlschema11-1/#ed-substitution_group_exclusions">Substitution Group Exclusions Definition</a>
337              */
338             void setSubstitutionGroupExclusions(const SchemaType::DerivationConstraints &exclusions);
339 
340             /**
341              * Returns the substitution group exclusions of the element.
342              */
343             SchemaType::DerivationConstraints substitutionGroupExclusions() const;
344 
345             /**
346              * Sets the identity @p constraints of the element.
347              *
348              * @see <a href="http://www.w3.org/TR/xmlschema11-1/#ed-identity-constraint_definitions">Identity Constraint Definition</a>
349              */
350             void setIdentityConstraints(const XsdIdentityConstraint::List &constraints);
351 
352             /**
353              * Adds a new identity @p constraint to the element.
354              */
355             void addIdentityConstraint(const XsdIdentityConstraint::Ptr &constraint);
356 
357             /**
358              * Returns a list of all identity constraints of the element.
359              */
360             XsdIdentityConstraint::List identityConstraints() const;
361 
362             /**
363              * Sets the substitution group @p affiliations of the element.
364              *
365              * @see <a href="http://www.w3.org/TR/xmlschema11-1/#ed-substituion_group_affiliations">Substitution Group Affiliations</a>
366              */
367             void setSubstitutionGroupAffiliations(const XsdElement::List &affiliations);
368 
369             /**
370              * Returns the substitution group affiliations of the element.
371              */
372             XsdElement::List substitutionGroupAffiliations() const;
373 
374             /**
375              * Adds a substitution group to the element.
376              */
377             void addSubstitutionGroup(const XsdElement::Ptr &elements);
378 
379             /**
380              * Returns the substitution groups of the element.
381              */
382             XsdElement::WeakList substitutionGroups() const;
383 
384         private:
385             SchemaType                        *m_type;
386             Scope::Ptr                        m_scope;
387             ValueConstraint::Ptr              m_valueConstraint;
388             TypeTable::Ptr                    m_typeTable;
389             bool                              m_isAbstract;
390             bool                              m_isNillable;
391             BlockingConstraints               m_disallowedSubstitutions;
392             SchemaType::DerivationConstraints m_substitutionGroupExclusions;
393             XsdIdentityConstraint::List       m_identityConstraints;
394             XsdElement::List                  m_substitutionGroupAffiliations;
395             QSet<XsdElement *>                m_substitutionGroups;
396     };
397 }
398 
399 QT_END_NAMESPACE
400 
401 QT_END_HEADER
402 
403 #endif
404