Hi Oleksandr,
with Java there is quite a bit of complexity involved. You would need to
develop an Equinox/Eclipse plugin - there are general guides on how to
get started on the web. This plugin would need to declare a dependency
on the plugin org.topbraid.core and org.topbraid.lib.jena. Then write
your SPARQL function against the Jena API by implementing the Function
interface. Tell TopBraid about it through the extension point
org.topbraid.core.sparqlfunctions. You then need to create an Equinox
bundle for this and add that bundle to the dropins folder of your
TopBraid installation.
5.3 will include an experimental JavaScript integration that would allow
people to create new functions without going through these complex steps.
Currently supported alternatives include SWP and SPARQLMotion, both of
which could be used to produce the output you are describing below.
HTH
Holger
On 21/02/2017 9:25, Oleksandr Mandryk wrote:
Hi Holger,
thank you very much for quick reply!
I'm Java software engineer so Java would be the most comfortable
option for me.
Could you please explain a little bit more? By "Java is a supported
option" you mean that idea with servlet is ok
or there is something like API that allows integrate a Java service?
Regarding SPARQL currently I have no idea how to implement a function
that will convert RDF to XML like this:
<hierarchy>
<properties>
<hierarchy.name>Hierarchy Name</hierarchy.name>
</properties>
<nodes>
<hierarchy.node ID="123" version="1000">
<node.name>Node Name</node.name>
<payload>
<topic.order>1</topic.order>
</payload>
<nodes>
...
</nodes>
</hierarchy.node>
</nodes>
</hierarchy>
Thank you.
Best regards,
Oleksandr Mandryk
On Monday, February 20, 2017 at 10:44:14 PM UTC+1, Holger Knublauch
wrote:
Yes Java is a supported option. In your case it could be a SPARQL
function that returns a string based on the current query graph.
However, in what language would you like to implement such a
capability if you had the choice?
Holger
On 21/02/2017 2:01, Oleksandr Mandryk wrote:
Hi All,
Could you tell me please what is the most appropriate way to add
the possibility
to export taxonomy to the custom format in addition to JSON-LD,
N-Triples, RDF/XML, Turtle.
I think it will be pretty hard to implement such export service
using SWP or SPARQLMotion.
So I'm considering creation of a new Java servlet, build it to
the JAR file and integrate it to EVN
by uploading this jar to tomcat and changing web.xml.
Is it a good idea or there are any better options?
Thank you!
Best regards,
Oleksandr Mandryk
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