source: trunk/src/xmlpatterns/api/qxmlschema.cpp@ 615

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#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

  \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.