Re: Validating XML using Ada schema module

[Sonia Dalal <sonia12106@iiitd.ac.in>]

On Thursday, May 7, 2015 at 9:23:22 PM UTC+5:30, Sonia Dalal wrote:
> Hi all
> 
> I am new to ada. I am working on a project where I am parsing XML for data. I am trying to validate the XML received (I am receiving XML from third party) using the schema module. Following is the sample schema which I took from w3c site after I was getting raised CONSTRAINT_ERROR : schema-validators.adb:2166 invalid data for my own schema but I am getting same error for this schema.
> 
> <?xml version="1.0"?>
> 
> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
> 
> <xs:element name="note">
>   <xs:complexType>
>     <xs:sequence>
>       <xs:element name="to" type="xs:string"/>
>       <xs:element name="from" type="xs:string"/>
>       <xs:element name="heading" type="xs:string"/>
>       <xs:element name="body" type="xs:string"/>
>     </xs:sequence>
>   </xs:complexType>
> </xs:element>
> 
> </xs:schema>
> 
> Changing the version and scheam tag to 
> <?xml version="1.0" encoding="UTF-8"?>
> 
> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
> elementFormDefault="qualified"
> targetNamespace="http://example.com/schemas/agent"
> xmlns:agent="http://example.com/schemas/agent"> 
> 
> does not make any difference. I tried looking into schema-validators.adb but that was of no use. Please help.



The above code is what I have used in my xsd and I am following the Ada documentation to generate grammar. 
I have put my xsd code aside just to figure out what is the reason for error as it is same in both the scenarios.
I am using GNAT 4.6 so it should be Ada 2005.
Is it possible that it is due to some dependency or version clashes?