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    40 ****************************************************************************/

    41 

    42 #include <QtCore>

    43 #include <QtXmlPatterns>

    44 

    45 class SchemaValidator

    46 {

    47     public:

    48         void validateFromUrl() const;

    49         void validateFromFile() const;

    50         void validateFromData() const;

    51         void validateComplete() const;

    52 

    53     private:

    54         QXmlSchema getSchema() const;

    55 };

    56 

    57 void SchemaValidator::validateFromUrl() const

    58 {

    59 //! [0]

    60     const QXmlSchema schema = getSchema();

    61 

    62     const QUrl url("http://www.schema-example.org/test.xml");

    63 

    64     QXmlSchemaValidator validator(schema);

    65     if (validator.validate(url))

    66         qDebug() << "instance document is valid";

    67     else

    68         qDebug() << "instance document is invalid";

    69 //! [0]

    70 }

    71 

    72 void SchemaValidator::validateFromFile() const

    73 {

    74 //! [1]

    75     const QXmlSchema schema = getSchema();

    76 

    77     QFile file("test.xml");

    78     file.open(QIODevice::ReadOnly);

    79 

    80     QXmlSchemaValidator validator(schema);

    81     if (validator.validate(&file, QUrl::fromLocalFile(file.fileName())))

    82         qDebug() << "instance document is valid";

    83     else

    84         qDebug() << "instance document is invalid";

    85 //! [1]

    86 }

    87 

    88 void SchemaValidator::validateFromData() const

    89 {

    90 //! [2]

    91     const QXmlSchema schema = getSchema();

    92 

    93     QByteArray data("<?xml version=\"1.0\" encoding=\"UTF-8\"?>"

    94                     "<test></test>");

    95 

    96     QBuffer buffer(&data);

    97     buffer.open(QIODevice::ReadOnly);

    98 

    99     QXmlSchemaValidator validator(schema);

   100     if (validator.validate(&buffer))

   101         qDebug() << "instance document is valid";

   102     else

   103         qDebug() << "instance document is invalid";

   104 //! [2]

   105 }

   106 

   107 QXmlSchema SchemaValidator::getSchema() const

   108 {

   109     QByteArray data("<?xml version=\"1.0\" encoding=\"UTF-8\"?>"

   110                     "<xsd:schema"

   111                     "        xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\""

   112                     "        xmlns=\"http://qt.nokia.com/xmlschematest\""

   113                     "        targetNamespace=\"http://qt.nokia.com/xmlschematest\""

   114                     "        version=\"1.0\""

   115                     "        elementFormDefault=\"qualified\">"

   116                     "</xsd:schema>");

   117 

   118     QBuffer buffer(&data);

   119     buffer.open(QIODevice::ReadOnly);

   120 

   121     QXmlSchema schema;

   122     schema.load(&buffer);

   123 

   124     return schema;

   125 }

   126 

   127 void SchemaValidator::validateComplete() const

   128 {

   129 //! [3]

   130     QUrl schemaUrl("file:///home/user/schema.xsd");

   131 

   132     QXmlSchema schema;

   133     schema.load(schemaUrl);

   134 

   135     if (schema.isValid()) {

   136         QFile file("test.xml");

   137         file.open(QIODevice::ReadOnly);

   138 

   139         QXmlSchemaValidator validator(schema);

   140         if (validator.validate(&file, QUrl::fromLocalFile(file.fileName())))

   141             qDebug() << "instance document is valid";

   142         else

   143             qDebug() << "instance document is invalid";

   144     }

   145 //! [3]

   146 }

   147 

   148 int main(int argc, char **argv)

   149 {

   150     QCoreApplication app(argc, argv);

   151 

   152     SchemaValidator validator;

   153 

   154     validator.validateFromUrl();

   155     validator.validateFromFile();

   156     validator.validateFromData();

   157     validator.validateComplete();

   158 

   159     return 0;

   160 }