Hi Jérôme,

 

i tried to load following xml document (linking-test.xml) in basex (with deactivated internal parser and activated xinclude option) as you mentioned:

<Links xmlns:xi="http://www.w3.org/2001/XInclude">

  <Link>

    <xi:include href="process-db.xml" xpointer="element(//*[@Id='sid-D453B3D6-0EA6-4607-A413-C6332ABE9F32'])"/>

    <xi:include href="requirements.xml" xpointer="element(//*[@Id='11cc0940-c8fb-4b81-920a-1ab5aea30037'])"/>

  </Link>

</Links>

 

The answer form basex is:

„basex/linking-test.xml" (Zeile 3): "include" mit href "process-db.xml" nicht erfolgreich, und es wurde kein "fallback"-Element gefunden.

(I use the german version J; translated: „include“ with href „process-db.xml“ was not successful, and there is no “fallback”-Element found.)

 

It seems, there is no document with path “process-db.xml”, but it is! If I try: db:path(doc(“process-db”)) it returns “process-db.xml”

 

Have you any idea, what’s my mistake? Maybe the documents to link have to be stored in a different way?

 

Thanks and Regards

Florian

 

Von: Jérôme Chauveau [mailto:jerome.chauveau@unicaen.fr]
Gesendet: Montag, 27. April 2015 16:18
An: Eckey, Florian
Cc: basex-talk@mailman.uni-konstanz.de
Betreff: Re: AW: [basex-talk] XLink and XPointer

 

Florian,

When the XINCLUDE option is enabled, xpointers are automatically executed.

xpointer attribute has to be used on an <include/> element (href one is required to point on the xml document)

With this xml contents:
in yourdb/linking.xml:

<Links xmlns:xi="http://www.w3.org/2001/XInclude">

               <Link> (linking activities with requirements)

                              <xi:include href=”requirements-db.xml” xpointer=”element(/path/to/activity/with/activity-id-node)”/> *

           <xi:include href=”bpmn-db.xml” xpointer=”element(/path/to/requirement/with/requirement-id-node)”/> *

               </Link>

</Links>

* Unfortunately, element scheme with node IDs is not well implemented (according to my tests) unless your documents are validating against a DTD (link).

When you'll execute this query (on the REST interface for example):

doc('yourdb/linking.xml')/links/link[1]

will returned:
<Link> (linking activities with requirements)
    <Activity Id=”activity-id”>

                              …

    </Activity>
    <Requirement Id=”requirement-id”>

                              …

    </Requirement>

</Link>

Hope this helps,

Jérôme.


Le 27/04/2015 15:35, Eckey, Florian a écrit :

Hi Jérôme,

 

thanks for your input. Following situation: I have two documents in different xml databases (basex). On the one side a business process model document (bpmn 2.0) and on the other side a requirements specification document. These documents have to be consistent. One approach to handle consistency is linking specific elements of both documents with each other. In my approach, i need to link activities (xml nodes) and specific requirements (xml nodes) with each other. So the second approach seems to fit best. I understand the syntax of this approach, but one time I have to evaluate this xpointer expressions. Is the evaluation implemented anywhere? Or how can I do this?

 

Maybe I even don’t need xinclude, but rather something like this (more similar to xlink; linking in an external document):

 

Business process document (xml database in basex):

<Package>

               …

               <Activity Id=”activity-id”>

                              …

               </Activity>

               …

</Package>

 

Business process document (xml database in basex):

<Requirements>

               …

               <Requirement Id=”requirement-id”>

                              …

               </Requirement>

               …

</Requirements >

 

Linking:

<Links>

               <Link> (linking activities with requirements)

                              <Locator href=”requirements-db” xpointer=”element(Activity[@Id=$activity-id])”/> (use xinclude here feels wrong)

<Locator href=”bpmn-db” xpointer=”element(Requirement[@Id=$requirement-id])”/>

               </Link>

</Links>

 

Is there something similar? Especially to execute xpointer? Or do I have to implement it on my own?

 

Thanks for your answers.

 

Regards.

 

Florian

 

 

Von: basex-talk-bounces@mailman.uni-konstanz.de [mailto:basex-talk-bounces@mailman.uni-konstanz.de] Im Auftrag von Jérôme Chauveau
Gesendet: Montag, 27. April 2015 15:07
An: basex-talk@mailman.uni-konstanz.de
Betreff: Re: [basex-talk] XLink and XPointer

 

Hi Florian,

The XINCLUDE Option is enabled in the default BaseX configuration.
Which kind of xpointer link do you need?

Those 2 inclusion types seems to be well-implemented is the Java XInclude support (xinclude implementation used in BaseX):

 1 - full document inclusion: <xi:include href='myDocument.xml'/>
 2 - Fragment inclusion: <xi:include href='myDocument.xml' xpointer='element(/1/path/to/fragment' />

Hope this helps,

Regards.

Jérôme


Le 27/04/2015 13:29, Eckey, Florian a écrit :

Hello,

 

i am actually writing my master thesis using basex for xml processing. I need to create consistency links between two xml documents, especially basex databases and its content. So I am certainly looking for xlink and xpointer implementations in basex. Are there any examples to do this with basex or if not, has anyone implemented an xquery version to execute it? I recoginzed that there are capabilities with xinclude. But I does not find any references of xinclude in basex, unless this: http://docs.basex.org/wiki/Options#XINCLUDE

So has anyone ideas or experiences using xlink and especially xpointer with basex or xquery?

 

Regards,

Florian

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-- 
Jérôme Chauveau - CERTIC-DSI - Campus I
Université de Caen Basse-Normandie




-- 
Jérôme Chauveau - CERTIC-DSI - Campus I
Université de Caen Basse-Normandie