[Mono-list] XmlSchemaSet Problem

[Kent Boogaart]

Hi all, 

I've come across a problem with the XmlSchemaSet that presents itself on
mono, but not on MS .NET. Essentially, adding multiple schemas to the set
does not permit them to "see eachother" without imports / includes. I
believe this is a bug in mono, since the documentation for XmlSchemaSet
states:

"Compiled schemas generate a single logical schema, a “set” of schemas. Any
imported schemas within a schema that are added to the set are directly
added to the set themselves. This means that all types are available to all
schemas."

Here is a simple repro for the problem. Works fine on MS.NET but yields an
error on mono:

-------------------------------------------------- 
using System; 
using System.Collections.Generic; 
using System.IO; 
using System.Text; 
using System.Xml; 
using System.Xml.Schema; 

namespace SchemaRepro 
{ 
        class Program 
        { 
                private const string schema1 = @"<?xml version=""1.0""
encoding=""utf-8"" ?> 
<xsd:schema id=""Base.Schema"" elementFormDefault=""qualified""
xmlns:xsd=""http://www.w3.org/2001/XMLSchema""> 
        <xsd:complexType name=""itemBase"" abstract=""true""> 
                <xsd:attribute name=""id"" type=""xsd:string""
use=""required""/> 
                <xsd:attribute name=""type"" type=""xsd:string""
use=""required""/> 
        </xsd:complexType> 
</xsd:schema> 
"; 

                private const string schema2 = @"<?xml version=""1.0""
encoding=""utf-8"" ?> 
<xsd:schema id=""Sub.Schema"" elementFormDefault=""qualified""
xmlns:xsd=""http://www.w3.org/2001/XMLSchema""> 
        <xsd:complexType name=""item""> 
                <xsd:complexContent> 
                        <xsd:extension base=""itemBase""> 
                                <xsd:attribute name=""itemName""
type=""xsd:string"" use=""required""/> 
                        </xsd:extension> 
                </xsd:complexContent> 
        </xsd:complexType> 
</xsd:schema> 
"; 

                static void Main(string[] args) 
                { 
                        XmlSchemaSet schemas = new XmlSchemaSet(); 
                        schemas.Add(XmlSchema.Read(new
StringReader(schema1), null)); 
                        schemas.Add(XmlSchema.Read(new
StringReader(schema2), null)); 
                        schemas.ValidationEventHandler +=
schemas_ValidationEventHandler; 
                        schemas.Compile(); 
                        Console.WriteLine(); 
                        Console.WriteLine("Press any key"); 
                        Console.ReadKey(); 
                } 

                static void schemas_ValidationEventHandler(object sender,
ValidationEventArgs e) 
                { 
                        Console.WriteLine("Message: {0}", e.Message); 
                        Console.WriteLine("Severity: {0}", e.Severity); 
                        Console.WriteLine("Stack Trace: {0}",
e.Exception.StackTrace); 
                } 
        } 
} 
-------------------------------------------------- 

As you can see, schema2 attempts to extend a type defined in schema1 but is
unable to see that type when running on mono.

Thanks for any help, 
Kent