Add W3C XML Schema validation support

This was done by Tobias Koenig, as part of an internship at Trolltech/Qt
Software, started at Wed Oct 1 18:32:43 2008 +0200, and the last commit being
part of this commit dating Tue Feb 24 11:03:36 2009 +0100. This is work
consisting of about 650 commits squashed into one, where the first commit was
61b280386c1905a15690fdd917dcbc8eb09b6283, in the repository before Qt's history
cut.

1 files changed, 143 insertions, 0 deletions

diff --git a/src/xmlpatterns/schema/qxsdidentityconstraint_p.h b/src/xmlpatterns/schema/qxsdidentityconstraint_p.h
new file mode 100644
index 0000000..6870b1e
--- /dev/null
+++ b/src/xmlpatterns/schema/qxsdidentityconstraint_p.h
@@ -0,0 +1,143 @@
+/****************************************************************************
+**
+** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the $MODULE$ of the Qt Toolkit.
+**
+** $TROLLTECH_DUAL_LICENSE$
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+
+#ifndef Patternist_XsdIdentityConstraint_H
+#define Patternist_XsdIdentityConstraint_H
+
+#include "qnamedschemacomponent_p.h"
+#include "qxsdannotated_p.h"
+#include "qxsdxpathexpression_p.h"
+
+#include <QtCore/QStringList>
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+namespace QPatternist
+{
+    /**
+     * @short Represents a XSD identity constraint object.
+     *
+     * This class represents the <em>identity constraint</em> object of a XML schema as described
+     * <a href="http://www.w3.org/TR/xmlschema11-1/#cIdentity-constraint_Definitions">here</a>.
+     *
+     * It contains information from either a <em>key</em> object, a <em>keyref</em> object or an
+     * <em>unique</em> object.
+     *
+     * @see <a href="http://www.w3.org/Submission/2004/SUBM-xmlschema-api-20040309/xml-schema-api.html#Interface-XSIdentityConstraint">XML Schema API reference</a>
+     * @ingroup Patternist_schema
+     * @author Tobias Koenig <tobias.koenig@trolltech.com>
+     */
+    class XsdIdentityConstraint : public NamedSchemaComponent, public XsdAnnotated
+    {
+        public:
+            typedef QExplicitlySharedDataPointer<XsdIdentityConstraint> Ptr;
+            typedef QList<XsdIdentityConstraint::Ptr> List;
+
+            /**
+             * Describes the <a href="http://www.w3.org/TR/xmlschema11-1/#icd-identity-constraint_category">category</a> of the identity constraint.
+             */
+            enum Category
+            {
+                Key = 1,        ///< The constraint is a key constraint
+                KeyReference,   ///< The constraint is a keyref constraint
+                Unique          ///< The constraint is an unique constraint
+            };
+
+            /**
+             * Sets the @p category of the identity constraint.
+             *
+             * @see Category
+             */
+            void setCategory(Category category);
+
+            /**
+             * Returns the category of the identity constraint.
+             */
+            Category category() const;
+
+            /**
+             * Sets the @p selector of the identity constraint.
+             *
+             * The selector is a restricted XPath 1.0 expression,
+             * that selects a set of nodes.
+             *
+             * @see <a href="http://www.w3.org/TR/xmlschema11-1/#icd-selector"></a>
+             */
+            void setSelector(const XsdXPathExpression::Ptr &selector);
+
+            /**
+             * Returns the selector of the identity constraint.
+             */
+            XsdXPathExpression::Ptr selector() const;
+
+            /**
+             * Sets the @p fields of the identity constraint.
+             *
+             * Each field is a restricted XPath 1.0 expression,
+             * that selects a set of nodes.
+             *
+             * @see <a href="http://www.w3.org/TR/xmlschema11-1/#icd-fields"></a>
+             */
+            void setFields(const XsdXPathExpression::List &fields);
+
+            /**
+             * Adds a new @p field to the identity constraint.
+             */
+            void addField(const XsdXPathExpression::Ptr &field);
+
+            /**
+             * Returns all fields of the identity constraint.
+             */
+            XsdXPathExpression::List fields() const;
+
+            /**
+             * Sets the referenced @p key of the identity constraint.
+             *
+             * The key points to a identity constraint of type Key or Unique.
+             *
+             * The identity constraint has only a referenced key if its
+             * type is KeyReference.
+             *
+             * @see <a href="http://www.w3.org/TR/xmlschema11-1/#icd-referenced_key"></a>
+             */
+            void setReferencedKey(const XsdIdentityConstraint::Ptr &key);
+
+            /**
+             * Returns the referenced key of the identity constraint or an empty
+             * pointer if its type is not KeyReference.
+             */
+            XsdIdentityConstraint::Ptr referencedKey() const;
+
+        private:
+            Category                   m_category;
+            XsdXPathExpression::Ptr    m_selector;
+            XsdXPathExpression::List   m_fields;
+            XsdIdentityConstraint::Ptr m_referencedKey;
+    };
+}
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif