Were there any more details in the error message? Usually there is a
full stack trace, e.g in the Error Log of TBC (try to double click on an
error there).
Holger
On 17/06/2020 14:56, Emily Zhang wrote:
Hi Irene,
Thanks for being so patient with me! When I was trying to run the
instance validation in composer, I got the error message "Could not
run constraint checker
java.lang.reflect.InvocationTargetException." How can I solve this
problem?
Best,
Emily
在 2020年6月16日星期二 UTC-5下午2:31:38，Irene Polikoff写道：
Please see below
On Jun 16, 2020, at 3:12 PM, Emily Zhang <[email protected]
<javascript:>> wrote:
Thanks, Holger. I guess all the questions I am having is due to
the lack of document explanation for "data graph" and "shapes graph”.
SHACL is a standard. Data graph and shapes graph are standard
terms. In terms of documentation, it is provided in the
specification: https://www.w3.org/TR/shacl/#validation
<https://www.w3.org/TR/shacl/#validation>
I don't know what's the parameters/keywords that validation need
to take in in order to produce results.
I am guessing that I have to link the "data graph" with hundreds
of examples to the name of "class" which I defined in the "shapes
graph”?
Data graph is a graph that contains data that you need to
validate. There is no limit on the number of resources in the graph.
And for the "shape graph", can I just upload the entire "ttl"
file that I created in Topbraid ME using SHACL where I defined
the constrains for property?
Shapes graph needs to contain some SHACL Shapes. It can contain
other information as well.
Appreciate a lot!
Still, not sure what is unclear. I answered this already in the
previous e-mail, so I am not providing any new info.
Emily
在 2020年6月15日星期一 UTC-5下午8:03:23，Holger Knublauch写道：
Yes, if you have an external program that produces the TTL
then (of course) you can upload that directly.
Holger
On 16/06/2020 10:58, Emily Zhang wrote:
Thanks a lot! If I have hundreds of instance to validate,
would it be possible if I transferred all the instance into
ttl format and upload it to the validation webpage? So that
I could skip the process to manually create all the
instances in Topbraid software.
在 2020年6月10日星期三 UTC-5下午5:18:31，Irene Polikoff写道：
Yes. Shape graph and data graph are roles. The same
graph can play both roles.
On Jun 10, 2020, at 5:43 PM, Emily Zhang
<[email protected]> wrote:
Thanks Irene! I guess I was confused because there are
two ttl files we need to upload, one for the data
graph, one for the shape graph. If I understood it
correctly, data graph is the example you want to
validate, and shape graph is for the constraint of your
example. I am not sure how that work if I provide the
entire file for my ontology, do I upload the same file
for data graph and shape graph, and the algorithm will
detect what's example to validate and what's the
constraint by itself?
在 2020年6月10日星期三 UTC-5上午2:44:52，Irene
Polikoff写道：
It does not matter. You can use the file you
already have. You do not need to “export” anything.
Just provide the entire file as input.
Alternatively, you could copy and paste Turtle
serialization of the file e.g., open it in the text
editor and copy and paste everything.
On Jun 9, 2020, at 5:34 PM, Emily Zhang
<[email protected]> wrote:
Thank you, Irene! If I've defined the constraint
using SHACL in topbraid ME, would it be easier to
export the constraint in the formal of turtle or
just create a stand-alone file to upload to the
validation page?
在 2020年6月8日星期一 UTC-5下午6:57:04，Irene
Polikoff写道：
Source code = text serialization of the RDF
graph in Turtle, RDF/XML or JSON-LD.
Shapes graph = a graph that contains SHACL
Shapes your data should be validated against.
Data graph = a graph that contains data to be
validated
These could be the same graphs
I would suggest experimenting first using this
page
http://localhost:8083/tbl/swp?_viewClass=tblshacl%3AValidationPage
<http://localhost:8083/tbl/swp?_viewClass=tblshacl:ValidationPage>
On Jun 8, 2020, at 6:45 PM, Emily Zhang
<[email protected]> wrote:
I've opened the
http://localhost:8083/tbl/swp?_viewClass=tblshacl:ValidationPage
<http://localhost:8083/tbl/swp?_viewClass=tblshacl:ValidationPage> successfully.
Thank you again!
However, I am a newbie in this field. Would
it be possible to point me to some examples
of what "source code of data/shapes graph"
should look like?
在 2020年6月8日星期一 UTC-5下午4:19:27，Emily
Zhang写道：
Thanks Irene. Just wanted to confirm,
does it mean I can hold the local service
with the same HTML interface in the
article using my Masetro application. The
only difference is that this web service
can't be shared with others like EDG does?
在 2020年6月4日星期四 UTC-5下午8:00:31，Irene
Polikoff写道：
Emily,
For the development and testing
purposes you can try the web service
locally at that URL -
http://localhost:8083/tbl/shaclValidation
<http://localhost:8083/tbl/shaclValidation>
This blog
https://www.topquadrant.com/topbraid-as-a-data-validation-server/
<https://www.topquadrant.com/topbraid-as-a-data-validation-server/> describes
the parameters accepted by the
service. The syntax is
http://localhost:8083/tbl/shaclValidation¶m1=value1¶m2=value2
<http://localhost:8083/tbl/shaclValidation¶m1=value1¶m2=value2> ...
You could also try the same
parameters through the HTML page at
http://localhost:8083/tbl/swp?_viewClass=tblshacl%3AValidationPage
<http://localhost:8083/tbl/swp?_viewClass=tblshacl:ValidationPage>
Servlet in TBC is for development
purposes only because TBC is not
intended to be used “in production”.
Requests over the network will not be
accepted. For that, you need EDG
server which is deployed on Tomcat.
On Jun 4, 2020, at 6:23 PM, Emily
Zhang <[email protected]> wrote:
Thanks Irene! The link works now. I
do have an additional question, the
article said "TopBraid Composer
Maestro Edition includes a simpler
web service for programmatic access
to the SHACL validation engine." Do
we have any tutorial of how to use
that engine in Maestro Version?
在 2020年6月2日星期二
UTC-5下午11:18:13，Irene Polikoff写道：
Hi Emily,
Thanks for reporting the problem. We
have fixed the broken links.
On Jun 2, 2020, at 11:26 PM, Emily
Zhang <[email protected]
<http://gmail.com/>> wrote:
Dear Topquandrant Training Team
members,
I am a customer for Topquandrant
Maester version. We mainly
purchased it because we want to use
its validation function.
And I’ve found this article which
give an overview of what the
validation tool looks like, and it
was fascinating! https://www
<https://www/>.topquadrant.com/topbraid-as-a-
<http://topquadrant.com/topbraid-as-a->data-validation-server/
However, when I tried to find more
articles regarding the details such
as "post on Using SHACL Data
Constraints in the TopBraid Web
products EVN and EDG” and the
article titled “How to use top
braid EDG as a data validation
server” they all showed “Page not
found”. I am just wondering if
there is any new links for the
related materials or there is any
other resources?
Many thanks!
Emily
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