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SOLVED: Problem with Protg 3.2.x, OWL-S Plugin and Graphviz
Juan Felipe Muoz Fernndez [email protected] April, 2015
Abstract
In this document I'll show you how to solve problem with Protg
3.2.1 with OWL-S Plugin for semantic markup of Atomic Web Services
and Composite Web Services in Windows 7 operating system. It's
really a pain in the ass struggle with all this software components
working together very good.
1. Current context.
When you try to use OWL-S Editor in Protg 3.2.1 you get the
following errors.
Grappa Exception Detected att.grappa.GraphParserException: at
[8(14)]: Syntax error...
ERROR: Somewhere in filterGraph
The following figures describe the situation
Figure 1: Grappa Exception Detected
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Figure 2: Error somewhere in filterGraph
2. Software components.
You must download and install the following software
components.
Protg 3.2.1 (With Java Virtual Machine). You can download from
here:
http://protegewiki.stanford.edu/wiki/Protege_Desktop_Old_Versions.
Graphviz 2.28. You can download from here:
http://www.graphviz.org/pub/graphviz/stable/windows/.
OWL-S Plugin build 23 (not working with build 24. Build 23
includes OWL-S 1.2 specification). You can download from here:
http://projects.semwebcentral.org/frs/?group_id=25
3. Procedure.
3.1 Install Protg as usual but notice the install directory
(e.g. C:\Program Files\Protege_3.2.1).
3.2 Install Graphviz as usual but notice the install directory
(e.g. C:\Program Files\Graphviz 2.28) you will need this path
later.
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3.3 Unzip OWL-S Plugin and copy folder 'com.sri.owlseditor' into
Protg Plugins directory (e.g. C:\Program
Files\Protege_3.2.1\plugins).
3.4 Start Protg by clicking Protg.exe (e.g. C:\Program
Files\Protege_3.2.1\Protege.exe). Start by creating an OWL /RDF
Files, New Project.
Figure 3: Create New Project
3.5 Go to Project menu and click Configure...
3.6 Check Owlstab and click OK. Wait for plugin load.
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Figure 5: Select OWL-S Plugin for Protg
3.7 Go to OWL-S Editor tab and click in Options icon (upper left
buttons in OWL-S Editor).
Figure 6: Select options to configure Graphviz
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3.8 Change Graphviz path for the full path to dot.exe. You'll
need the installation path of Graphviz (e.g. the full path to
dot.exe is C:\Program Files\Graphviz 2.28\bin\dot.exe). Clic OK to
set correct path.
Figure 6: Change Graphviz path
3.9 Save project. If you don't save the project, the settings
about OWL-S Editor Plugin and Graphviz path will be lost.
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4. Test.
4.1 Into OWL-S Editor tab, click in WSDL icon (upper left
buttons in OWL-S Editor).
Figure 7: Import WSDL
4.2 Import this WSDL:
http://www.webservicex.net/globalweather.asmx?WSDL in Enter URL
field. Press Enter to load Operations (left Operations panel). Fig.
8.
4.3 Select any operations from Operations panel and click in
Import WSDL button. Save the OWL file and wait for the load of
semantic markup of Web Service. Fig. 8.
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Figure 8: Select web service operation to import WSDL
4.4 Create a new instance of Process Class by clicking Create
instance button on process:Process panel. Select Composite process
and click OK. Fig. 9 and 10.
Figure 9: Create instance of Process Class
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Figure 10: Selecting composite process
4.5 If everything is fine, your visual editor looks like
this.
Figure 11: Create instance of Process Class
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4.6 Try to add a Perform element to process graph.
5. Final Words.
This solution was tested on Windows 7 Home Edition 32 bits. Any
other testing environment will be welcome. Submit your tests.
