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+/****************************************************************************
+**
+** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the QtXmlPatterns of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qxmlschema.h"
+#include "qxmlschema_p.h"
+
+#include <QtCore/QIODevice>
+#include <QtCore/QUrl>
+
+/*!
+  \class QXmlSchema
+
+  \brief The QXmlSchema class provides loading and validation of a W3C XML Schema.
+
+  \reentrant
+  \since 4.6
+  \ingroup xml-tools
+
+  The QXmlSchema class loads, compiles and validates W3C XML Schema files
+  that can be used further for validation of XML instance documents via
+  \l{QXmlSchemaValidator}.
+
+  The following example shows how to load a XML Schema file from the network
+  and test whether it is a valid schema document:
+
+  \snippet doc/src/snippets/qxmlschema/main.cpp 0
+
+  \sa QXmlSchemaValidator, {xmlpatterns/schema}{XML Schema Validation Example}
+*/
+
+/*!
+  Constructs an invalid, empty schema that cannot be used until
+  load() is called.
+ */
+QXmlSchema::QXmlSchema()
+    : d(new QXmlSchemaPrivate(QXmlNamePool()))
+{
+}
+
+/*!
+  Constructs a QXmlSchema that is a copy of \a other. The new
+  instance will share resources with the existing schema
+  to the extent possible.
+ */
+QXmlSchema::QXmlSchema(const QXmlSchema &other)
+    : d(other.d)
+{
+}
+
+/*!
+  Destroys this QXmlSchema.
+ */
+QXmlSchema::~QXmlSchema()
+{
+}
+
+/*!
+  Sets this QXmlSchema to a schema loaded from the \a source
+  URI.
+
+  If the schema \l {isValid()} {is invalid}, \c{false} is returned
+  and the behavior is undefined.
+
+  Example:
+
+  \snippet doc/src/snippets/qxmlschema/main.cpp 0
+
+  \sa isValid()
+ */
+bool QXmlSchema::load(const QUrl &source)
+{
+    d->load(source, QString());
+    return d->isValid();
+}
+
+/*!
+  Sets this QXmlSchema to a schema read from the \a source
+  device. The device must have been opened with at least
+  QIODevice::ReadOnly.
+
+  \a documentUri represents the schema obtained from the \a source
+  device. It is the base URI of the schema, that is used
+  internally to resolve relative URIs that appear in the schema, and
+  for message reporting.
+
+  If \a source is \c null or not readable, or if \a documentUri is not
+  a valid URI, behavior is undefined.
+
+  If the schema \l {isValid()} {is invalid}, \c{false} is returned
+  and the behavior is undefined.
+
+  Example:
+
+  \snippet doc/src/snippets/qxmlschema/main.cpp 1
+
+  \sa isValid()
+ */
+bool QXmlSchema::load(QIODevice *source, const QUrl &documentUri)
+{
+    d->load(source, documentUri, QString());
+    return d->isValid();
+}
+
+/*!
+  Sets this QXmlSchema to a schema read from the \a data
+
+  \a documentUri represents the schema obtained from the \a data.
+  It is the base URI of the schema, that is used internally to
+  resolve relative URIs that appear in the schema, and
+  for message reporting.
+
+  If \a documentUri is not a valid URI, behavior is undefined.
+  \sa isValid()
+
+  If the schema \l {isValid()} {is invalid}, \c{false} is returned
+  and the behavior is undefined.
+
+  Example:
+
+  \snippet doc/src/snippets/qxmlschema/main.cpp 2
+
+  \sa isValid()
+ */
+bool QXmlSchema::load(const QByteArray &data, const QUrl &documentUri)
+{
+    d->load(data, documentUri, QString());
+    return d->isValid();
+}
+
+/*!
+  Returns true if this schema is valid. Examples of invalid schemas
+  are ones that contain syntax errors or that do not conform the
+  W3C XML Schema specification.
+ */
+bool QXmlSchema::isValid() const
+{
+    return d->isValid();
+}
+
+/*!
+  Returns the name pool used by this QXmlSchema for constructing \l
+  {QXmlName} {names}. There is no setter for the name pool, because
+  mixing name pools causes errors due to name confusion.
+ */
+QXmlNamePool QXmlSchema::namePool() const
+{
+    return d->namePool();
+}
+
+/*!
+  Returns the document URI of the schema or an empty URI if no
+  schema has been set.
+ */
+QUrl QXmlSchema::documentUri() const
+{
+    return d->documentUri();
+}
+
+/*!
+  Changes the \l {QAbstractMessageHandler}{message handler} for this
+  QXmlSchema to \a handler. The schema sends all compile and
+  validation messages to this message handler. QXmlSchema does not take
+  ownership of \a handler.
+
+  Normally, the default message handler is sufficient. It writes
+  compile and validation messages to \e stderr. The default message
+  handler includes color codes if \e stderr can render colors.
+
+  When QXmlSchema calls QAbstractMessageHandler::message(),
+  the arguments are as follows:
+
+  \table
+  \header
+    \o message() argument
+    \o Semantics
+  \row
+    \o QtMsgType type
+    \o Only QtWarningMsg and QtFatalMsg are used. The former
+       identifies a warning, while the latter identifies an error.
+  \row
+    \o const QString & description
+    \o An XHTML document which is the actual message. It is translated
+       into the current language.
+  \row
+    \o const QUrl &identifier
+    \o Identifies the error with a URI, where the fragment is
+       the error code, and the rest of the URI is the error namespace.
+  \row
+    \o const QSourceLocation & sourceLocation
+    \o Identifies where the error occurred.
+  \endtable
+
+ */
+void QXmlSchema::setMessageHandler(QAbstractMessageHandler *handler)
+{
+    d->setMessageHandler(handler);
+}
+
+/*!
+    Returns the message handler that handles compile and validation
+    messages for this QXmlSchema.
+ */
+QAbstractMessageHandler *QXmlSchema::messageHandler() const
+{
+    return d->messageHandler();
+}
+
+/*!
+  Sets the URI resolver to \a resolver. QXmlSchema does not take
+  ownership of \a resolver.
+
+  \sa uriResolver()
+ */
+void QXmlSchema::setUriResolver(const QAbstractUriResolver *resolver)
+{
+    d->setUriResolver(resolver);
+}
+
+/*!
+  Returns the schema's URI resolver. If no URI resolver has been set,
+  QtXmlPatterns will use the URIs in schemas as they are.
+
+  The URI resolver provides a level of abstraction, or \e{polymorphic
+  URIs}. A resolver can rewrite \e{logical} URIs to physical ones, or
+  it can translate obsolete or invalid URIs to valid ones.
+
+  When QtXmlPatterns calls QAbstractUriResolver::resolve() the
+  absolute URI is the URI mandated by the schema specification, and the
+  relative URI is the URI specified by the user.
+
+  \sa setUriResolver()
+ */
+const QAbstractUriResolver *QXmlSchema::uriResolver() const
+{
+    return d->uriResolver();
+}
+
+/*!
+  Sets the network manager to \a manager.
+  QXmlSchema does not take ownership of \a manager.
+
+  \sa networkAccessManager()
+ */
+void QXmlSchema::setNetworkAccessManager(QNetworkAccessManager *manager)
+{
+    d->setNetworkAccessManager(manager);
+}
+
+/*!
+  Returns the network manager, or 0 if it has not been set.
+
+  \sa setNetworkAccessManager()
+ */
+QNetworkAccessManager *QXmlSchema::networkAccessManager() const
+{
+    return d->networkAccessManager();
+}