- From: Evren Sirin <evren@cs.umd.edu>
- Date: Fri, 24 Sep 2004 10:16:40 -0400
- To: daniela.claro@eseo.fr
- CC: "'public-sws-ig'" <public-sws-ig@w3.org>
Daniela CLARO wrote:
>Hello People,
> I've composed three web services (Addition, Subtraction, Multiplication)
>into a service called Calculator. The goal is that I sent A, B parameters to
>Calculator Service, and than it passes to Addition, after it passes A,B to
>Subtraction. The results of Addition (c) and Subtraction (c') I passed to
>the Multiplication service respectively.
>
> I am using OWL-S API, all things works all right but not allways. I didn't
>change anything and only execute my RunService.java(the same as in Zip Code
>example). One time it works, and in a second time it didn't work and says
>that the Parameter B in Subtraction is missing.
>
> Did anybody else have the same problem?
>
>
I don't have time to look at your example in detail right now but it
seems the problem is related to the data flow specification (sameValues
constructs). There are two different sameValues statement for the
composite process input 'a' which is prefectly fine but may cause
problems in the parsing (putting the related paramaters in a single
sameValues is also valid in OWL-S but I'm sure that will cause other
problems in the API). I can tell you a better explanation when I have
time to check what is going.
Evren
>I put here my Calculator.owl:
>
><?xml version="1.0" encoding="UTF-8"?>
><rdf:RDF
> xmlns:owl= "http://www.w3.org/2002/07/owl#"
> xmlns:rdfs= "http://www.w3.org/2000/01/rdf-schema#"
> xmlns:rdf= "http://www.w3.org/1999/02/22-rdf-syntax-ns#"
> xmlns:factbook= "http://www.daml.org/2003/09/factbook/factbook-ont#"
> xmlns:service= "http://www.daml.org/services/owl-s/1.0/Service.owl#"
> xmlns:process= "http://www.daml.org/services/owl-s/1.0/Process.owl#"
> xmlns:profile= "http://www.daml.org/services/owl-s/1.0/Profile.owl#"
> xmlns:grounding=
>"http://www.daml.org/services/owl-s/1.0/Grounding.owl#"
> xml:base= "http://localhost:8080/ws/Calculator.owl"
>
>
>
> <owl:Ontology rdf:about="">
> <owl:imports rdf:resource="http://localhost:8080/ws/Addition.owl"/>
> <owl:imports rdf:resource="http://localhost:8080/ws/Subtraction.owl"/>
> <owl:imports rdf:resource="http://localhost:8080/ws/Multiplication.owl"/>
> </owl:Ontology>
>
><!-- Service description -->
><service:Service rdf:ID="CalculatorService">
> <service:presents rdf:resource="#CalculatorProfile"/>
>
> <service:describedBy rdf:resource="#CalculatorProcessModel"/>
>
> <service:supports rdf:resource="#CalculatorGrounding"/>
></service:Service>
>
><!-- Profile description -->
><profile:Profile rdf:ID="CalculatorProfile">
> <service:isPresentedBy rdf:resource="#CalculatorService"/>
>
> <profile:serviceName xml:lang="en">Calculator</profile:serviceName>
> <profile:textDescription xml:lang="en">Returns the calculator of A e B in
>all operations</profile:textDescription>
>
> <profile:hasInput rdf:resource="#a"/>
> <profile:hasInput rdf:resource="#b"/>
> <profile:hasOutput rdf:resource="#c"/>
></profile:Profile>
>
><!-- Process Model description -->
><process:ProcessModel rdf:ID="CalculatorProcessModel">
> <service:describes rdf:resource="#CalculatorService"/>
> <process:hasProcess rdf:resource="#CalculatorProcess"/>
></process:ProcessModel>
>
><process:CompositeProcess rdf:ID="CalculatorProcess">
> <process:hasInput rdf:resource="#a"/>
> <process:hasInput rdf:resource="#b"/>
> <process:hasOutput rdf:resource="#c"/>
>
> <process:composedOf>
> <process:Sequence>
> <process:components rdf:parseType="Collection">
> <process:AtomicProcess
>rdf:about="http://localhost:8080/ws/Addition.owl#AdditionProcess"/>
> <process:AtomicProcess
>rdf:about="http://localhost:8080/ws/Subtraction.owl#SubtractionProcess"/>
> <process:AtomicProcess
>rdf:about="http://localhost:8080/ws/Multiplication.owl#MultiplicationProcess
>"/>
> </process:components>
> </process:Sequence>
> </process:composedOf>
><!--Passa o valor A da calculator para A da Addition -->
> <process:sameValues rdf:parseType="Collection">
> <process:ValueOf>
> <process:theParameter rdf:resource="#a"/>
> <process:atProcess rdf:resource="#CalculatorProcess"/>
> </process:ValueOf>
> <process:ValueOf>
> <process:theParameter
>rdf:resource="http://localhost:8080/ws/Addition.owl#a"/>
> <process:atProcess
>rdf:resource="http://localhost:8080/ws/Addition.owl#AdditionProcess"/>
> </process:ValueOf>
> </process:sameValues>
>
><!--Passa o valor B da calculator para B da Addition -->
> <process:sameValues rdf:parseType="Collection">
> <process:ValueOf>
> <process:theParameter rdf:resource="#b"/>
> <process:atProcess rdf:resource="#CalculatorProcess"/>
> </process:ValueOf>
> <process:ValueOf>
> <process:theParameter
>rdf:resource="http://localhost:8080/ws/Addition.owl#b"/>
> <process:atProcess
>rdf:resource="http://localhost:8080/ws/Addition.owl#AdditionProcess"/>
> </process:ValueOf>
> </process:sameValues>
>
><!--Passa o valor A da Addition para A da Subtraction -->
> <process:sameValues rdf:parseType="Collection">
> <process:ValueOf>
> <process:theParameter
>rdf:resource="http://localhost:8080/ws/Addition.owl#a"/>
> <process:atProcess
>rdf:resource="http://localhost:8080/ws/Addition.owl#AdditionProcess"/>
> </process:ValueOf>
> <process:ValueOf>
> <process:theParameter
>rdf:resource="http://localhost:8080/ws/Subtraction.owl#a"/>
> <process:atProcess
>rdf:resource="http://localhost:8080/ws/Subtraction.owl#SubtractionProcess"/>
> </process:ValueOf>
> </process:sameValues>
>
><!--Passa o valor B da Addition para B da Subtraction -->
> <process:sameValues rdf:parseType="Collection">
> <process:ValueOf>
> <process:theParameter
>rdf:resource="http://localhost:8080/ws/Addition.owl#b"/>
> <process:atProcess
>rdf:resource="http://localhost:8080/ws/Addition.owl#AdditionProcess"/>
> </process:ValueOf>
> <process:ValueOf>
> <process:theParameter
>rdf:resource="http://localhost:8080/ws/Subtraction.owl#b"/>
> <process:atProcess
>rdf:resource="http://localhost:8080/ws/Subtraction.owl#SubtractionProcess"/>
> </process:ValueOf>
> </process:sameValues>
>
><!--Passa o valor C da Subtracao para A da Multiplicacao -->
> <process:sameValues rdf:parseType="Collection">
> <process:ValueOf>
> <process:theParameter
>rdf:resource="http://localhost:8080/ws/Subtraction.owl#c"/>
> <process:atProcess
>rdf:resource="http://localhost:8080/ws/Subtraction.owl#SubtractionProcess"/>
> </process:ValueOf>
> <process:ValueOf>
> <process:theParameter
>rdf:resource="http://localhost:8080/ws/Multiplication.owl#a"/>
> <process:atProcess
>rdf:resource="http://localhost:8080/ws/Multiplication.owl#MultiplicationProc
>ess"/>
> </process:ValueOf>
> </process:sameValues>
>
><!--Passa o valor C da Adicao para B da Multiplicacao -->
> <process:sameValues rdf:parseType="Collection">
> <process:ValueOf>
> <process:theParameter
>rdf:resource="http://localhost:8080/ws/Addition.owl#c"/>
> <process:atProcess
>rdf:resource="http://localhost:8080/ws/Addition.owl#AdditionProcess"/>
> </process:ValueOf>
> <process:ValueOf>
> <process:theParameter
>rdf:resource="http://localhost:8080/ws/Multiplication.owl#b"/>
> <process:atProcess
>rdf:resource="http://localhost:8080/ws/Multiplication.owl#MultiplicationProc
>ess"/>
> </process:ValueOf>
> </process:sameValues>
>
><!--Passa o valor C da Multiplicacao para C da Calculator -->
> <process:sameValues rdf:parseType="Collection">
> <process:ValueOf>
> <process:theParameter
>rdf:resource="http://localhost:8080/ws/Multiplication.owl#c"/>
> <process:atProcess
>rdf:resource="http://localhost:8080/ws/Multiplication.owl#MultiplicationProc
>ess"/>
> </process:ValueOf>
> <process:ValueOf>
> <process:theParameter rdf:resource="#c"/>
> <process:atProcess rdf:resource="#CalculatorProcess"/>
> </process:ValueOf>
> </process:sameValues>
></process:CompositeProcess>
>
>
><process:Input rdf:ID="a">
> <process:parameterType
>rdf:resource="http://www.w3.org/2001/XMLSchema#string"/>
> <rdfs:label>Calc A</rdfs:label>
></process:Input>
>
><process:Input rdf:ID="b">
> <process:parameterType
>rdf:resource="http://www.w3.org/2001/XMLSchema#string"/>
> <rdfs:label>Calc B</rdfs:label>
></process:Input>
>
><process:Output rdf:ID="c">
> <process:parameterType
>rdf:resource="http://www.w3.org/2001/XMLSchema#string"/>
> <rdfs:label>Calc Result</rdfs:label>
></process:Output>
>
>
><!-- Grounding description -->
><grounding:WsdlGrounding rdf:ID="CalculatorGrounding">
> <!-- service:supportedBy rdf:resource="#BabelFishTranslatorService"/-->
> <grounding:hasAtomicProcessGrounding
>rdf:resource="http://localhost:8080/ws/Addition.owl#AdditionProcessGrounding
>"/>
> <grounding:hasAtomicProcessGrounding
>rdf:resource="http://localhost:8080/ws/Subtraction.owl#SubtractionProcessGro
>unding"/>
> <grounding:hasAtomicProcessGrounding
>rdf:resource="http://localhost:8080/ws/Multiplication.owl#MultiplicationProc
>essGrounding"/>
></grounding:WsdlGrounding>
>
></rdf:RDF>
>***********************
>Here also the runnig application when it works, and when it dos not works:
>Service:Calculator
>Values:{Calc A=5, Calc B=3}
>Start executing process CalculatorProcess
> Start executing process AdditionProcess
> [DONE]
> Start executing process SubtractionProcess
> [DONE]
> Start executing process MultiplicationProcess
> [DONE]
>[DONE]
>Executed service 'Calculator'
>A = 5
>B = 3
>Output =
>16
>********************
>Service:Calculator
>Values:{Calc A=5, Calc B=3}
>Start executing process CalculatorProcess
> Start executing process AdditionProcess
> [DONE]
> Start executing process SubtractionProcess
>Exception in thread "main" java.lang.Exception: Value of input parameter
>'Sub B'
> is not set!
> at
>org.mindswap.owls.grounding.impl.WSDLAtomicGroundingImpl.invoke(WSDLA
>tomicGroundingImpl.java:134)
> at
>org.mindswap.owls.process.execution.impl.ProcessExecutionEngineImpl.e
>xecuteAtomic(ProcessExecutionEngineImpl.java:117)
> at
>org.mindswap.owls.process.execution.impl.ProcessExecutionEngineImpl.e
>xecute(ProcessExecutionEngineImpl.java:104)
> at
>org.mindswap.owls.process.execution.impl.ProcessExecutionEngineImpl.e
>xecuteOrdered(ProcessExecutionEngineImpl.java:147)
> at
>org.mindswap.owls.process.execution.impl.ProcessExecutionEngineImpl.e
>xecuteConstruct(ProcessExecutionEngineImpl.java:122)
> at
>org.mindswap.owls.process.execution.impl.ProcessExecutionEngineImpl.e
>xecute(ProcessExecutionEngineImpl.java:107)
> at examples.RunService2.runZipCode(RunService2.java:84)
> at examples.RunService2.main(RunService2.java:101)
>
>For these two I did not change anything.
>
>
>Thanks in advance,
>Daniela
>
>
>
>
>
>
Received on Friday, 24 September 2004 14:17:12 UTC