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EObject for XML fragments [message #1272634]

Tue, 18 March 2014 11:26

Dhanya M

Messages: 19
Registered: April 2013

Junior Member

Hello,

How can I get the EObject corresponding to an XML fragment (part of XML which is adhering to the XSD with which EMF was generated).

In JAXB, JAXBFragment is available. Is there something similar available in EMF?

My requirement is to get the model object (EObject) when the user copies a text (a portion of XML) from outside and paste onto my tree editor.

Thanks.

Dhanya

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Re: EObject for XML fragments [message #1272704 is a reply to message #1272634]

Tue, 18 March 2014 14:44

Ed Merks

Messages: 33140
Registered: July 2009

Senior Member

Dhanya,

Comments below.

On 18/03/2014 4:26 AM, Dhanya M wrote:
> Hello,
>
> How can I get the EObject corresponding to an XML fragment (part of
> XML which is adhering to the XSD with which EMF was generated).
>
> In JAXB, JAXBFragment is available. Is there something similar
> available in EMF?
>
> My requirement is to get the model object (EObject) when the user
> copies a text (a portion of XML) from outside and paste onto my tree
> editor.
As long as the root element corresponds to a global element in the XML
Schema, you can load the XML using a resource created by your generated
resource factory. You could use
org.eclipse.emf.ecore.resource.URIConverter.ReadableInputStream.ReadableInputStream(String)
to create the input stream from which to load directly from your XML
string representation.
>
> Thanks.
>
> Dhanya

Ed Merks
Professional Support: https://www.macromodeling.com/

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Re: EObject for XML fragments [message #1273503 is a reply to message #1272704]

Thu, 20 March 2014 05:08

Dhanya M

Messages: 19
Registered: April 2013

Junior Member

Thanks Ed for the reply.

I tried the solution. However i get a Feature not found. Is it because my element is not root node.

As per my XSD, i can have only one root node say A and what i am trying to access a complexType which is defined 2 levels down. But it is global.
Is it that only root nodes can be read??

Thanks.
Dhanya

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Re: EObject for XML fragments [message #1273833 is a reply to message #1273503]

Thu, 20 March 2014 15:57

Ed Merks

Messages: 33140
Registered: July 2009

Senior Member

Dhanya,

You'd need to specialize code because from the root element name and
namespace it must be possible to uniquely determine what EClass of
EObject to create. I.e., in
org.eclipse.emf.ecore.xmi.impl.XMLHandler.createTopObject(String,
String) it must be able to determine for the top element which object to
create.

On 19/03/2014 10:08 PM, Dhanya M wrote:
> Thanks Ed for the reply.
>
> I tried the solution. However i get a Feature not found. Is it because
> my element is not root node.
>
> As per my XSD, i can have only one root node say A and what i am
> trying to access a complexType which is defined 2 levels down. But it
> is global.
> Is it that only root nodes can be read??
>
> Thanks.
> Dhanya

Ed Merks
Professional Support: https://www.macromodeling.com/

Report message to a moderator

Re: EObject for XML fragments [message #1276241 is a reply to message #1273833]

Mon, 24 March 2014 09:35

Dhanya M

Messages: 19
Registered: April 2013

Junior Member

Hello Ed,

I didnt understand how we can put this (createTopObject) in the resource loading code so that resource can load into the proper feature. Can you provide a sample?

Thanks.

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Re: EObject for XML fragments [message #1276420 is a reply to message #1276241]

Mon, 24 March 2014 14:44

Ed Merks

Messages: 33140
Registered: July 2009

Senior Member

Dhanya,

Have you set a breakpoint to see how that code works in a case when it
works and in the case when it fails?

On 24/03/2014 2:35 AM, Dhanya M wrote:
> Hello Ed,
>
> I didnt understand how we can put this (createTopObject) in the
> resource loading code so that resource can load into the proper
> feature. Can you provide a sample?
>
> Thanks.

Ed Merks
Professional Support: https://www.macromodeling.com/

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