Add conformance section to qtxmlpatterns doc and extended api docs

2 files changed, 28 insertions, 1 deletions

diff --git a/doc/src/qtxmlpatterns.qdoc b/doc/src/qtxmlpatterns.qdoc
index cb260fc..a48d713 100644
--- a/doc/src/qtxmlpatterns.qdoc
+++ b/doc/src/qtxmlpatterns.qdoc
@@ -839,6 +839,27 @@
     with the \c fn:id() function. See
     \l{http://www.w3.org/TR/xml-id/}{xml:id Version 1.0} for details.
 
+    \section2 XML Schema 1.0
+
+    The QtXmlPatterns implementation of XML Schema validation supports
+    the schema specification version 1.0 in large parts. Known problems
+    of the implementation and areas where conformancy may be questionable
+    are:
+
+    \list
+    \o Large \c minOccurs or \c maxOccurs values or deeply nested ones
+       require huge amount of memory which might cause the system to freeze.
+       Such a schema should be rewritten to use \c unbounded as value instead
+       of large numbers. This restriction will hopefully be fixed in a later release.
+    \o Comparison of really small or large floating point values might lead to
+       wrong results in some cases. However such numbers should not be relevant
+       for day-to-day usage.
+    \o Regular expression support is currently not conformant but follows
+       Qt's QRegExp standard syntax.
+    \o Identity constraint checks can not use the values of default or fixed
+       attribute definitions.
+    \endlist
+
     \section2 Resource Loading
 
     When QtXmlPatterns loads an XML resource, e.g., using the
diff --git a/src/xmlpatterns/api/qxmlschemavalidator.cpp b/src/xmlpatterns/api/qxmlschemavalidator.cpp
index b72b1ef..dc8e55d 100644
--- a/src/xmlpatterns/api/qxmlschemavalidator.cpp
+++ b/src/xmlpatterns/api/qxmlschemavalidator.cpp
@@ -69,7 +69,7 @@
 /*!
   Constructs a schema validator.
   The schema used for validation must be referenced in the XML instance document
-  via the xsi:schemaLocation attribute.
+  via the \c xsi:schemaLocation or \c xsi:noNamespaceSchemaLocation attribute.
  */
 QXmlSchemaValidator::QXmlSchemaValidator()
     : d(new QXmlSchemaValidatorPrivate(QXmlSchema()))
@@ -78,6 +78,9 @@ QXmlSchemaValidator::QXmlSchemaValidator()
 
 /*!
   Constructs a schema validator that will use \a schema for validation.
+  If an empty \l {QXmlSchema} schema is passed to the validator, the schema used
+  for validation must be referenced in the XML instance document
+  via the \c xsi:schemaLocation or \c xsi:noNamespaceSchemaLocation attribute.
  */
 QXmlSchemaValidator::QXmlSchemaValidator(const QXmlSchema &schema)
     : d(new QXmlSchemaValidatorPrivate(schema))
@@ -94,6 +97,9 @@ QXmlSchemaValidator::~QXmlSchemaValidator()
 
 /*!
   Sets the \a schema that shall be used for further validation.
+  If the schema is empty, the schema used for validation must be referenced
+  in the XML instance document via the \c xsi:schemaLocation or
+  \c xsi:noNamespaceSchemaLocation attribute.
  */
 void QXmlSchemaValidator::setSchema(const QXmlSchema &schema)
 {