Hi Ayushi,
(as you have probably seen, this mailing list requires an approval step
before messages by new users are posted. As a result there are often
delays before you will see your message).
On your specific question, in general, SPARQLMotion modules can have
multiple sm:next modules - it basically means that the execution
branches off. In this particular case though you are trying to connect a
module of the surrounding script into a sub-script, and this can only be
done via sm:if/else.
So we need to figure out why the variable ?xmlStringInput is not visible
for the MapToEpic module. It should. I have attached a script that looks
similar to your, and which has ?xmlStringInput visible in the else branch:
Could you compare this with what you did. I would need to see the full
file (in TTL format) to help further.
Regards
Holger
On 2/11/2017 7:07, Ayushi Singh wrote:
Hi,
I am working on a project with Prof. Steve (CMU faculty) where our
installation of TBL is called by a system that expects to issue SPARQL
queries to an endpoint, rather than calling a SPARQLMotion module as a
web service. I am using BranchByAsk to get the desired output based
upon a condition. Mentioned below is the flow.
I am passing input string to "ConvertXMLToRDF" module, which then
passed to "branchByAsk". In "BranchByAsk" whole input string is
present. When "BranchbyAsk" module gives false as an answer then it
passes control to "MapToEpic" module which is associated with the else
condition of "BranchByAsk".I have attached a picture of the flow for
better understanding.
But when the control is passed to "MapToEpic" the input string is not
present. We tried to associate "ConvertXMLToRDF" module to "MapToEpic"
in order to pass the input string as shown below. But this is giving
us "Null Pointer Exception".
Is it not possible for a module to have 2 or more "next" modules?
Please share how can we pass input information from "BrankByAsk" to
"MapToEpic" module.
Thanks,
Ayushi Singh
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# baseURI: http://example.org/elseVariableTest
# imports: http://topbraid.org/sparqlmotionfunctions
# imports: http://topbraid.org/sparqlmotionlib-tbc
# prefix: elseVariableTest
@prefix elseVariableTest: <http://example.org/elseVariableTest#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix sm: <http://topbraid.org/sparqlmotion#> .
@prefix smf: <http://topbraid.org/sparqlmotionfunctions#> .
@prefix sml: <http://topbraid.org/sparqlmotionlib#> .
@prefix sp: <http://spinrdf.org/sp#> .
@prefix spin: <http://spinrdf.org/spin#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
<http://example.org/elseVariableTest>
rdf:type owl:Ontology ;
owl:imports <http://topbraid.org/sparqlmotionfunctions> ;
owl:imports <http://topbraid.org/sparqlmotionlib-tbc> ;
owl:versionInfo "Created with TopBraid Composer" ;
.
elseVariableTest:AssertTrue_1
rdf:type sml:AssertTrue ;
sml:askQuery [
rdf:type sp:Ask ;
sp:where (
[
rdf:type sp:Bind ;
sp:expression [
rdf:type smf:trace ;
sp:arg1 "Value of ?xmlStringInput: {?1}" ;
sp:arg2 [
sp:varName "xmlStringInput" ;
] ;
] ;
sp:variable [
sp:varName "dummy" ;
] ;
]
[
rdf:type sp:Filter ;
sp:expression [
rdf:type sp:bound ;
sp:arg1 [
sp:varName "xmlStringInput" ;
] ;
] ;
]
) ;
] ;
rdfs:label "Assert true 1" ;
.
elseVariableTest:BindBySelect_1
rdf:type sml:BindBySelect ;
sm:next elseVariableTest:BranchByAsk_1 ;
sm:nodeX 283 ;
sm:nodeY 108 ;
sml:selectQuery [
rdf:type sp:Select ;
sp:resultVariables (
[
sp:varName "world" ;
]
) ;
sp:where (
[
rdf:type sp:Bind ;
sp:expression "World" ;
sp:variable [
sp:varName "world" ;
] ;
]
) ;
] ;
rdfs:label "Bind by select 1" ;
.
elseVariableTest:BindWithConstant_1
rdf:type sml:BindWithConstant ;
sm:next elseVariableTest:BindBySelect_1 ;
sm:nodeX 63 ;
sm:nodeY 16 ;
sm:outputVariable "xmlStringInput" ;
sml:value "Hello" ;
rdfs:label "Bind with constant 1" ;
.
elseVariableTest:BranchByAsk_1
rdf:type sml:BranchByAsk ;
sm:else elseVariableTest:AssertTrue_1 ;
sm:nodeX 286 ;
sm:nodeY 234 ;
sml:askQuery [
rdf:type sp:Ask ;
sp:where (
[
rdf:type sp:Filter ;
sp:expression [
rdf:type sp:not ;
sp:arg1 [
rdf:type sp:bound ;
sp:arg1 [
sp:varName "xmlStringInput" ;
] ;
] ;
] ;
]
) ;
] ;
rdfs:label "Branch by ask 1" ;
.
<http://example.org/elseVariableTest#Import-kennedys.ttl_1>
rdf:type sml:ImportRDFFromWorkspace ;
sm:next elseVariableTest:AssertTrue_1 ;
sm:nodeX 45 ;
sm:nodeY 158 ;
sml:baseURI "http://topbraid.org/examples/kennedys"; ;
rdfs:label "Import kennedys.ttl" ;
.
