Re: [xsl] reg XSD generation using XSL

[Geert Bormans <geert@xxxxxxxxxxxxxxxxxxx>]

why would you want to do that with XSLT?

use trang for a first stab at it
http://www.thaiopensource.com/relaxng/trang.html
you can develop some XSLT logic to twiddle the output of that to your 
convenience
be prepared to do some manual stuff as well


At 16:57 6/12/2010, you wrote:
> Hi all, My previous posts didnt get thru the list..as I was not yet 
> on the mailing list.. hence I am posting it here. I am wondering if 
> anyone had attempted to generate an schema from an input XML 
> document. I am kind of stuck up in this and I am wondering if could 
> get some help here. The Schemas has to be ver 1.0 and generation 
> code has to be written using XSL. I worked out a basic idea.. like 
> 1) Open schema tag and check for name spaces 2) Check if current 
> context is root,     2.1) is context root:- Print the element 
> name.           2.1.1) if children and attributes are present, the 
> context is complex...else print context (single tag) as 
> simple             2.1.2) If complex, print child element names 
> based on their types                   2.1.2.1) check if the 
> children are complex in a for each loop and then goto 
> 2.1.1             2.2.1) close the complex tag..and check for 
> attributes. 3) close the doc with /schema I came up with a basic 
> code and it is working for xml with one root element and first 
> children. If it goes towards grand children, I am kind of printing 
> out same element types twice or more as they are visible in previous 
> siblings. I am wondering what could be a generic solution here. e.g. 
> inbound xml <?xml version='1.0' encoding="UTF-8"?> <catalog 
> cat="music">     <cd country="RSA">         <title>Empire 
> Burlesque</title>         <artist>Bob 
> Dylan</artist>         <price>10.90</price>     </cd>     <dd 
> county="UK">         <title1>Hide your heart 
> 4</title1>         <artist1>Bonnie 
> Tyler</artist1>         <price2>9.90</price2>     </dd>     <dc 
> county="UK">         <title2>Hide your heart 
> 4</title2>         <artist2>Bonnie 
> Tyler</artist2>         <price2>9.90</price2>     </dc> </catalog> 
> The schema results in <xs:schema 
> xmlns:xs="http://www.w3.org/2001/XMLSchema"; 
> elementFormDefault="qualified" 
> attributeFormDefault="unqualified">     <xs:element 
> name="catalog">         <xs:complexType>             <xs:sequence> 
>               <xs:element name="cd" 
> type="cdType"/>                 <xs:element name="dd" 
> type="ddType"/>                 <xs:element name="dc" 
> type="dcType"/>             </xs:sequence>         </xs:complexType> 
>     </xs:element>     <xs:complexType 
> name="cdType">         <xs:sequence>             <xs:element 
> name="title" type="titleType"/>             <xs:element 
> name="artist" type="artistType"/>             <xs:element 
> name="price" 
> type="priceType"/>         </xs:sequence>         <xs:attribute 
> name="country" 
> type="xs:string"/>     </xs:complexType>     <xs:simpleType 
> name="titleType">         <xs:restriction 
> base="xs:string"/>     </xs:simpleType>     <xs:simpleType 
> name="artistType">         <xs:restriction 
> base="xs:string"/>     </xs:simpleType>     <xs:simpleType 
> name="priceType">         <xs:restriction 
> base="xs:integer"/>     </xs:simpleType>     <xs:complexType 
> name="ddType">         <xs:sequence>             <xs:element 
> name="title1" type="title1Type"/>             <xs:element 
> name="artist1" type="artist1Type"/>             <xs:element 
> name="price2" 
> type="price2Type"/>         </xs:sequence>         <xs:attribute 
> name="county" 
> type="xs:string"/>     </xs:complexType>     <xs:simpleType 
> name="title1Type">         <xs:restriction 
> base="xs:string"/>     </xs:simpleType>     <xs:simpleType 
> name="artist1Type">         <xs:restriction 
> base="xs:string"/>     </xs:simpleType>     <xs:simpleType 
> name="price2Type">         <xs:restriction 
> base="xs:integer"/>     </xs:simpleType>     <xs:complexType 
> name="dcType">         <xs:sequence>             <xs:element 
> name="title2" type="title2Type"/>             <xs:element 
> name="artist2" type="artist2Type"/>             <xs:element 
> name="price2" 
> type="price2Type"/>         </xs:sequence>         <xs:attribute 
> name="county" 
> type="xs:string"/>     </xs:complexType>     <xs:simpleType 
> name="title2Type">         <xs:restriction 
> base="xs:string"/>     </xs:simpleType>     <xs:simpleType 
> name="artist2Type">         <xs:restriction 
> base="xs:string"/>     </xs:simpleType>     <xs:simpleType 
> name="price2Type">         <xs:restriction 
> base="xs:integer"/>     </xs:simpleType> </xs:schema> where the 
> simple type price2Type is repeated twice once processing dd and then 
> dc. as I am processing only the children of that node context.  I am 
> wondering what could be a generic solution here to avoid duplicates 
> at this context node. thankyou Densil