On Thu, 12 Oct 2006, Michael Glavassevich wrote:
Thanks for answering quickly.
I'm still not done with this problem. just to make sure, I get it right:
To determine the element or attribut declarations the
key/keyref/unique-elements belong to, I have to evaluate the
selector/field XPath expressions manually while traversing the XSModel?
There's is no way to use the
org.apache.xerces.impl.xs.identity package in conjunction with the
org.apache.xerces.impl.xpath package for this problem?
Thanks again,
Mathis
Hi Mathis,
Mathis Kueckens <[EMAIL PROTECTED]> wrote on 10/12/2006 11:50:57
AM:
hi,
for my diploma thesis I'm programming a transformation tool, that
transforms XML schemas to UML
class diagrams.
For traversing the xml schema structure I use the xerces xml schema api.
Currently I try to transform keyref-to-key-relations into uml
associations. Therefore I need to
resolve the Xpath expressions within the IdentityConstraint expressions
(XSIDCDefinition) to get
the attributes/elements the key/keyRef-Element is assigned to.
I tried to use the "org.apache.xerces.impl.xs.identity" package that
implements the key-keyref
concept. So far I didn't reach my goal.
My question:
Is this package (maybe with interaction to other XPath implementations)
is
able to resolve the
xpath expressions (within <xs:selector>- and <xs:field>-elements) to
resolve the attribue/element
declaration (XSAttributeDeclaration, XSElementDeclaration) it belongs
to?
There's nothing in the API which does this. You'd have to walk the XSModel
yourself (taking into account wildcards, substitution groups and possible
values for xsi:type) to determine which declared attributes/elements could
match a selector/field XPath.
Thank You
Mathis
------------------------------
Technical University of Berlin
Germany
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Michael Glavassevich
XML Parser Development
IBM Toronto Lab
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