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List:       xmlbeans-user
Subject:    Re: Getting at a schema component's id attribute
From:       Peter Keller <pkeller () globalphasing ! com>
Date:       2010-03-30 17:35:55
Message-ID: alpine.LNX.2.00.1003301755530.20653 () bernoulli ! globalphasing ! com
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> myTypeInstance.selectPath(XPathExpressionString) will do that.

No it will not. Instances of schema components in XMLBeans are instances of 
classes that implement the interface org.apache.xmlbeans.SchemaType: the 
giveaway here is that SchemaType has a super-interface called 
SchemaComponent. Neither of these interfaces specify a selectPath method.

selectPath is a method of XmlObject, and only provides access to instance 
data, not metadata from the XSD that was used to generate the XMLBeans API.

The current XPath schema is available at http://www.w3.org/TR/xpath/ . It 
has not changed since November 1999. It makes no reference to XML schemas at 
all: at that time the XML schema specification was only in its third working 
draft, and was not yet a standard.

In principle, I could build an XMLBeans interface from the Schema for 
Schemas at http://www.w3.org/2001/XMLSchema.xsd, and use that in combination 
with the original XSD files (assuming that they are available in all cases). 
If you re-read my original question, you will see that I was (in effect) 
asking if the metadata that I am after are preserved in the API, so that I 
could avoid doing that.

> 
> On 30 March 2010 16:01, Peter Keller <pkeller@globalphasing.com> wrote:
>       On Fri, 26 Mar 2010, Sri Harsha Yenuganti wrote:
>
>             Try using the XMLBeans XQuery/XPath API features. 
> 
> 
> It seems to me that you have not understood my question. I am not asking how to retrieve data
> from an XML document. I am asking whether certain information from an XML schema is available
> from the API that XMLBeans generates from that schema.
> 
> Does anyone have an answer for my original question, or have I found an area where XMLBeans
> support for XML schema is incomplete?
> 
> Regards,
> Peter.
> 
> 
>
>       On 26 March 2010 09:57, Peter Keller <pkeller@globalphasing.com> wrote:
>            Dear all,
>
>            I have been trying to figure out how to get the value of the "id" attribute
>       of a schema
>            component, but have got nowhere. Can anyone help?
>
>            Slightly more explicitly: if my XSD contains a type definition like this:
>
>            <complexType name="MyType" id="some_identifier_or_other">
>            ...
>            </complexType>
>
>            and I have an instance of this type "myTypeInstance", is there some way that
>       I can access the
>            value of "id" by using "myTypeInstance.SchemaType()", or otherwise?
>
>            Regards,
>            Peter.
>
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> 
> 
>
>       --
>       Sri Harsha Yenuganti
>       shyenuganti@gmail.com
>
>       "  IF YOU ARE NOT BRAVE ENOUGH TO FACE A FAILURE YOU ARE UNFIT TO SUCCEED.AIM
>       HIGH BUT BE PREPARED FOR THE
>       WORST. "
> 
> 
> 
> 
> 
> --
> Peter Keller                                     Tel.: +44 (0)1223 353033
> Global Phasing Ltd.,                             Fax.: +44 (0)1223 366889
> Sheraton House,
> Castle Park,
> Cambridge CB3 0AX
> United Kingdom
> 
> 
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: user-unsubscribe@xmlbeans.apache.org
> For additional commands, e-mail: user-help@xmlbeans.apache.org
> 
> 
> 
> 
> --
> Sri Harsha Yenuganti
> shyenuganti@gmail.com
> 
> "  IF YOU ARE NOT BRAVE ENOUGH TO FACE A FAILURE YOU ARE UNFIT TO SUCCEED.AIM HIGH BUT BE PREPARED
> FOR THE WORST. "
> 
> 
> 
>

-- 
Peter Keller                                     Tel.: +44 (0)1223 353033
Global Phasing Ltd.,                             Fax.: +44 (0)1223 366889
Sheraton House,
Castle Park,
Cambridge CB3 0AX
United Kingdom


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