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/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtXmlPatterns module 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 Technology Preview License Agreement accompanying
** this package.
**
** 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.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QUrl>
#include <QVector>
#include <QXmlNamePool>
#include "qabstractxmlnodemodel_p.h"
#include "qemptyiterator_p.h"
#include "qitemmappingiterator_p.h"
#include "qsequencemappingiterator_p.h"
#include "qsimplexmlnodemodel.h"
#include "qsingletoniterator_p.h"
QT_BEGIN_NAMESPACE
using namespace QPatternist;
class QSimpleXmlNodeModelPrivate : public QAbstractXmlNodeModelPrivate
{
public:
QSimpleXmlNodeModelPrivate(const QXmlNamePool &np) : namePool(np)
{
}
mutable QXmlNamePool namePool;
};
/*!
\class QSimpleXmlNodeModel
\brief The QSimpleXmlNodeModel class is an implementation of QAbstractXmlNodeModel sufficient for many common cases.
\reentrant
\since 4.4
\ingroup xml-tools
Subclassing QAbstractXmlNodeModel can be a significant task, because it
requires implementing several, complex member functions. QSimpleXmlNodeModel
provides default implementations of these member functions that are suitable
for a wide range of node models.
Subclasses of QSimpleXmlNodeModel must be thread-safe.
*/
/*!
Constructs a QSimpleXmlNodeModel for use with with the specified
\a namePool.
*/
QSimpleXmlNodeModel::QSimpleXmlNodeModel(const QXmlNamePool &namePool)
: QAbstractXmlNodeModel(new QSimpleXmlNodeModelPrivate(namePool))
{
}
/*!
Destructor.
*/
QSimpleXmlNodeModel::~QSimpleXmlNodeModel()
{
}
/*!
If \a node is an element or attribute, typedValue() is called, and
the return value converted to a string, as per XQuery's rules.
If \a node is another type of node, the empty string is returned.
If this function is overridden for comments or processing
instructions, it is important to remember to call it (for elements
and attributes having values not of type \c xs:string) to ensure that
the values are formatted according to XQuery.
*/
QString QSimpleXmlNodeModel::stringValue(const QXmlNodeModelIndex &node) const
{
const QXmlNodeModelIndex::NodeKind k= kind(node);
if(k == QXmlNodeModelIndex::Element || k == QXmlNodeModelIndex::Attribute)
{
const QVariant &candidate = typedValue(node);
if(candidate.isNull())
return QString();
else
return AtomicValue::toXDM(candidate).stringValue();
}
else
return QString();
}
/*!
Returns the base URI for \a node. This is always the document
URI.
\sa documentUri()
*/
QUrl QSimpleXmlNodeModel::baseUri(const QXmlNodeModelIndex &node) const
{
return documentUri(node);
}
/*!
Returns the name pool associated with this model. The
implementation of name() will use this name pool to create
names.
*/
QXmlNamePool &QSimpleXmlNodeModel::namePool() const
{
Q_D(const QSimpleXmlNodeModel);
return d->namePool;
}
/*!
Always returns an empty QVector. This signals that no namespace
bindings are in scope for \a node.
*/
QVector<QXmlName> QSimpleXmlNodeModel::namespaceBindings(const QXmlNodeModelIndex &node) const
{
Q_UNUSED(node);
return QVector<QXmlName>();
}
/*!
Always returns a default constructed QXmlNodeModelIndex instance,
regardless of \a id.
This effectively means the model has no elements that have an id.
*/
QXmlNodeModelIndex QSimpleXmlNodeModel::elementById(const QXmlName &id) const
{
Q_UNUSED(id);
return QXmlNodeModelIndex();
}
/*!
Always returns an empty vector, regardless of \a idref.
This effectively means the model has no elements or attributes of
type \c IDREF.
*/
QVector<QXmlNodeModelIndex> QSimpleXmlNodeModel::nodesByIdref(const QXmlName &idref) const
{
Q_UNUSED(idref);
return QVector<QXmlNodeModelIndex>();
}
QT_END_NAMESPACE
|
