RE: Where are XML types ?
> > Where are XML types ? > People know xs:string, xs:int and xs:QName, because they are > taken from > raw data, but is there high level types for XML items such as > xml:element, xml:attribute, or xml:namespace ? > I have to name (with a QName) objects (that can be XML items) > as if they > were types. > I really really don't think that XPath2 offers a reasonable > solution with : > "5 instance of xs:integer" > ". instance of element()" > the last one frightened me :( If you can come up with a better solution, please do. XML schema defines types for the *contents* of elements and attributes: when you say that a particular node is an integer, what you really mean is that the content of the node is an integer. This is probably the confusion that makes it difficult to get to grips with the XPath type system. There are actually two overlapping sets of types: the types of the nodes, and the types of the contents of the nodes. This is why XPath uses different notations for the two cases: element(), text(), comment() for the nodes, and xs:integer, my:purchase-order, and so on for their contents. Then it allows you to combine the two: element(*,my:purchase-order) is an element containing a purchase order, and attribute(*, xs:integer) is an attribute containing an integer. It takes a bit of getting used to, but it works. Michael Kay http://www.saxonica.com/
PURCHASE STYLUS STUDIO ONLINE TODAY!
Purchasing Stylus Studio from our online shop is Easy, Secure and Value Priced!
Download The World's Best XML IDE!
Accelerate XML development with our award-winning XML IDE - Download a free trial today!
Subscribe in XML format