Hi Hussein, > > > Using DTDs or W3C XML Schemas, there is *no way* to allow or forbid a > child element such as "size" depending on the value of attribute "type" > of parent element "property". >
I was fearing that...I saw something about an extension called "Schematron" that is providing a workaround, but that is obviously not usable within XXE. > To my knowledge, only Relax NG -- http://www.relaxng.org/ -- allows to > do specify this; and Relax NG is unfortunately not yet supported by XXE. > > We recommend to make your schema more strongly typed, that is to define > a special <array> node. > I guess I won't get around that easily. (Actually, we use a special <array> type right now..) > However, if you really don't want to do that and if you can program in > Java, it is pretty easy to write a DocumentHook which is invoked by XXE > just after the validation by the DTD or the W3C XML Schema (among other > things). > > A DocumentHook, see > http://www.xmlmind.com/xmleditor/_distrib/docs/dev/ar01s08.html, has > mainly been designed to allow to perform a semantic validation which > goes beyond what can be done by DTDs and W3C XML Schemas alone. > I didn't get into Java yet, but I guess someone here will have a look at that later. > --- > PS: If you create a W3C XML Schema in XXE and you specify both a "type" > attribute and a "xs:complexType" child element for an "xs:element", you > get a *semantic* error detected by the ``built-in DocumentHook for W3C > XML Schemas'' and not a *structural* error detected by the standard > validation by the Schema for Schemas. > Ah! That's a valuable little detail :-) Thank you for the great support. We are really convinced about your product! Best regards, - Martin -- | Martin Strubel // Photonfocus::SoftwareDeveloper | | Photonfocus AG, Switzerland Tel. +41 55 4510132 | | ----------------------------------------------------------------- |
