diff -r 41300fa6a67c -r f7bc934e204c doc/src/snippets/qxmlschemavalidator/main.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/doc/src/snippets/qxmlschemavalidator/main.cpp	Wed Mar 31 11:06:36 2010 +0300
@@ -0,0 +1,160 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the documentation 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 <QtCore>
+#include <QtXmlPatterns>
+
+class SchemaValidator
+{
+    public:
+        void validateFromUrl() const;
+        void validateFromFile() const;
+        void validateFromData() const;
+        void validateComplete() const;
+
+    private:
+        QXmlSchema getSchema() const;
+};
+
+void SchemaValidator::validateFromUrl() const
+{
+//! [0]
+    const QXmlSchema schema = getSchema();
+
+    const QUrl url("http://www.schema-example.org/test.xml");
+
+    QXmlSchemaValidator validator(schema);
+    if (validator.validate(url))
+        qDebug() << "instance document is valid";
+    else
+        qDebug() << "instance document is invalid";
+//! [0]
+}
+
+void SchemaValidator::validateFromFile() const
+{
+//! [1]
+    const QXmlSchema schema = getSchema();
+
+    QFile file("test.xml");
+    file.open(QIODevice::ReadOnly);
+
+    QXmlSchemaValidator validator(schema);
+    if (validator.validate(&file, QUrl::fromLocalFile(file.fileName())))
+        qDebug() << "instance document is valid";
+    else
+        qDebug() << "instance document is invalid";
+//! [1]
+}
+
+void SchemaValidator::validateFromData() const
+{
+//! [2]
+    const QXmlSchema schema = getSchema();
+
+    QByteArray data("<?xml version=\"1.0\" encoding=\"UTF-8\"?>"
+                    "<test></test>");
+
+    QBuffer buffer(&data);
+    buffer.open(QIODevice::ReadOnly);
+
+    QXmlSchemaValidator validator(schema);
+    if (validator.validate(&buffer))
+        qDebug() << "instance document is valid";
+    else
+        qDebug() << "instance document is invalid";
+//! [2]
+}
+
+QXmlSchema SchemaValidator::getSchema() const
+{
+    QByteArray data("<?xml version=\"1.0\" encoding=\"UTF-8\"?>"
+                    "<xsd:schema"
+                    "        xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\""
+                    "        xmlns=\"http://qt.nokia.com/xmlschematest\""
+                    "        targetNamespace=\"http://qt.nokia.com/xmlschematest\""
+                    "        version=\"1.0\""
+                    "        elementFormDefault=\"qualified\">"
+                    "</xsd:schema>");
+
+    QBuffer buffer(&data);
+    buffer.open(QIODevice::ReadOnly);
+
+    QXmlSchema schema;
+    schema.load(&buffer);
+
+    return schema;
+}
+
+void SchemaValidator::validateComplete() const
+{
+//! [3]
+    QUrl schemaUrl("file:///home/user/schema.xsd");
+
+    QXmlSchema schema;
+    schema.load(schemaUrl);
+
+    if (schema.isValid()) {
+        QFile file("test.xml");
+        file.open(QIODevice::ReadOnly);
+
+        QXmlSchemaValidator validator(schema);
+        if (validator.validate(&file, QUrl::fromLocalFile(file.fileName())))
+            qDebug() << "instance document is valid";
+        else
+            qDebug() << "instance document is invalid";
+    }
+//! [3]
+}
+
+int main(int argc, char **argv)
+{
+    QCoreApplication app(argc, argv);
+
+    SchemaValidator validator;
+
+    validator.validateFromUrl();
+    validator.validateFromFile();
+    validator.validateFromData();
+    validator.validateComplete();
+
+    return 0;
+}