source: trunk/src/xmlpatterns/api/qxmlschema.cpp@ 617

/****************************************************************************
**
** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation ([email protected])
**
** This file is part of the QtXmlPatterns module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** 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 1.1, 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 have questions regarding the use of this file, please contact
** Nokia at [email protected].
** $QT_END_LICENSE$
**
****************************************************************************/

#include "qxmlschema.h"
#include "qxmlschema_p.h"

#include <QtCore/QIODevice>
#include <QtCore/QUrl>

QT_BEGIN_NAMESPACE

/*!
  \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

  \section1 XML Schema Version

  This class is used to represent schemas that conform to the \l{XML Schema} 1.0
  specification.

  \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