The QSimpleXmlNodeModel class is an implementation of QAbstractXmlNodeModel sufficient for many common cases. 更多...
头: | #include <QSimpleXmlNodeModel> |
qmake: | QT += xmlpatterns |
Since: | Qt 4.4 |
继承: | QAbstractXmlNodeModel |
该类在 Qt 4.4 引入。
注意: 此类的所有函数 可重入 .
QSimpleXmlNodeModel (const QXmlNamePool & namePool ) | |
virtual | ~QSimpleXmlNodeModel () |
QXmlNamePool & | namePool () const |
virtual QUrl | baseUri (const QXmlNodeModelIndex & node ) const override |
virtual QXmlNodeModelIndex | elementById (const QXmlName & id ) const override |
virtual QVector<QXmlName> | namespaceBindings (const QXmlNodeModelIndex & node ) const override |
virtual QVector<QXmlNodeModelIndex> | nodesByIdref (const QXmlName & idref ) const override |
virtual QString | stringValue (const QXmlNodeModelIndex & node ) const override |
子类化 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 namePool .
[虚拟]
QSimpleXmlNodeModel::
~QSimpleXmlNodeModel
()
析构函数。
[override virtual]
QUrl
QSimpleXmlNodeModel::
baseUri
(const
QXmlNodeModelIndex
&
node
) const
重实现: QAbstractXmlNodeModel::baseUri (const QXmlNodeModelIndex &n) const.
Returns the base URI for node . This is always the document URI.
另请参阅 documentUri ().
[override virtual]
QXmlNodeModelIndex
QSimpleXmlNodeModel::
elementById
(const
QXmlName
&
id
) const
重实现: QAbstractXmlNodeModel::elementById (const QXmlName &id) const.
Always returns a default constructed QXmlNodeModelIndex instance, regardless of id .
This effectively means the model has no elements that have an id.
Returns the name pool associated with this model. The implementation of name () will use this name pool to create names.
[override virtual]
QVector
<
QXmlName
> QSimpleXmlNodeModel::
namespaceBindings
(const
QXmlNodeModelIndex
&
node
) const
重实现: QAbstractXmlNodeModel::namespaceBindings (const QXmlNodeModelIndex &n) const.
Always returns an empty QVector . This signals that no namespace bindings are in scope for node .
[override virtual]
QVector
<
QXmlNodeModelIndex
> QSimpleXmlNodeModel::
nodesByIdref
(const
QXmlName
&
idref
) const
重实现: QAbstractXmlNodeModel::nodesByIdref (const QXmlName &idref) const.
Always returns an empty vector, regardless of idref .
This effectively means the model has no elements or attributes of type
IDREF
.
[override virtual]
QString
QSimpleXmlNodeModel::
stringValue
(const
QXmlNodeModelIndex
&
node
) const
重实现: QAbstractXmlNodeModel::stringValue (const QXmlNodeModelIndex &n) const.
若 node is an element or attribute, typedValue () is called, and the return value converted to a string, as per XQuery 's rules.
若 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
xs:string
) to ensure that the values are formatted according to
XQuery
.