[SOLVED] Xerces SAX parser ignore the xmlxs:xsi attribute as an attribute of an element

Xerces SAX parser ignore the xmlxs:xsi attribute as an attribute of an element

Using Xerces SAX parser I try to retrieve all elements and their attributes of this XML file:

-------------- Begin XML file to parse ---------------->

<?xml version="1.0" encoding="UTF-8"?> <invoice xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="my.xsd"> <parties> (...)

-------------- End XML file to parse ---------------->

When getting the attributes for the element 'invoice', Xerces++ does not insert the 'xmlns:xsi' attribute in the list of 'Attributes' for the element 'invoice'. However, the attribute 'xsi:noNamespaceSchemaLocation' is inserted in the list.

Why? Is there a specific reason from an XML standard point of view ? Is there a way to configure Xerces++ SAX parser so that it inserts this attribute as well? (The documentation on setting the parser properties does not tell how).

Thanks for your help.

Solution

SAX treats namespace declarations differently from attributes. Attributes are notified in the startElement() event, namespaces are notified (if requested) in the startPrefixMapping() event.