Difference between revisions of "Tutorial: Ontology Development"

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Our organization is Acme Software ltd and from there is our plug-in name derived, ''com.acme.movie.ontology''. Insert that as project name. In the following page you should know that this plugin does not contribute to UI, does not need activator or isn't a rich client application.
 
Our organization is Acme Software ltd and from there is our plug-in name derived, ''com.acme.movie.ontology''. Insert that as project name. In the following page you should know that this plugin does not contribute to UI, does not need activator or isn't a rich client application.
  
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===Setup Graph Building Nature===
 
Next, add Graph builder into the project nature. You need to modify a file called '''workspace/com.acme.movie.ontology/.project''', and to do this Eclipse must be closed for changes to apply.  
 
Next, add Graph builder into the project nature. You need to modify a file called '''workspace/com.acme.movie.ontology/.project''', and to do this Eclipse must be closed for changes to apply.  
  
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Good, fire up the Eclipse again. If everything went well "Graph Builder" ought to be visibile in the properties of the project file.
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Good, fire up the Eclipse again. If everything went well "Graph Builder" ought to be visibile in the properties of the project file. Like so:
 +
 
 +
Also create dictory called graphs, and there a file Movie.pgraph.
 +
 
 +
=== Configure MANIFEST.MF ===
 +
Your ontology well depend on Layer0, so open META-INF/MANIFEST.MF in a editor and add org.simantics.layer0 to plug-in dependencies.
 +
 
 +
Also, you are going to
 +
*Export package com.acme.movie.ontology
 +
 
 +
Your MANIFEST.MF should look like this.
 +
<pre>
 +
Manifest-Version: 1.0
 +
Bundle-ManifestVersion: 2
 +
Bundle-Name: Ontology
 +
Bundle-SymbolicName: com.acme.movie.ontology
 +
Bundle-Version: 1.0.0.qualifier
 +
Bundle-Vendor: ACME
 +
Bundle-RequiredExecutionEnvironment: JavaSE-1.6
 +
Require-Bundle: org.simantics.layer0;bundle-version="1.0.0"
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Export-Package: com.acme.movie.ontology
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</pre>
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=== Developing the ontology ===
 +
Open Movie.pgraph and start editing.

Revision as of 10:47, 6 October 2010

Step 1: Ontology Plug-in

Ontologies are encapsulated in OSGi bundles. In eclipse we develop them as equinox plug-ins. It contains ontology sources (graph/*.pgraph), compiled graph file (graph.tg), and Java resource files (src and bin).

Open a New Plug-in Project wizard:

  • Select File >> New >> Plug-in Development >> Plug-in Project

Our organization is Acme Software ltd and from there is our plug-in name derived, com.acme.movie.ontology. Insert that as project name. In the following page you should know that this plugin does not contribute to UI, does not need activator or isn't a rich client application.

Setup Graph Building Nature

Next, add Graph builder into the project nature. You need to modify a file called workspace/com.acme.movie.ontology/.project, and to do this Eclipse must be closed for changes to apply.

The file look like this:

  <?xml version="1.0" encoding="UTF-8"?>
  <projectDescription>
	<name>com.acme.movie.ontology</name>
	<comment></comment>
	<projects>
	</projects>
	<buildSpec>
		<buildCommand>
			<name>org.eclipse.jdt.core.javabuilder</name>
			<arguments>
			</arguments>
		</buildCommand>
		<buildCommand>
			<name>org.eclipse.pde.ManifestBuilder</name>
			<arguments>
			</arguments>
		</buildCommand>
		<buildCommand>
			<name>org.eclipse.pde.SchemaBuilder</name>
			<arguments>
			</arguments>
		</buildCommand>
	</buildSpec>
	<natures>
		<nature>org.eclipse.pde.PluginNature</nature>
		<nature>org.eclipse.jdt.core.javanature</nature>
	</natures>
  </projectDescription>

Add the following insertions:

	<buildSpec>
		<buildCommand>
			<name>org.simantics.graph.builder</name>
			<arguments>
			</arguments>
		</buildCommand>
                ...

and

	<natures>
                <nature>org.simantics.graph.nature</nature>
                ...


Good, fire up the Eclipse again. If everything went well "Graph Builder" ought to be visibile in the properties of the project file. Like so:

Also create dictory called graphs, and there a file Movie.pgraph.

Configure MANIFEST.MF

Your ontology well depend on Layer0, so open META-INF/MANIFEST.MF in a editor and add org.simantics.layer0 to plug-in dependencies.

Also, you are going to

  • Export package com.acme.movie.ontology

Your MANIFEST.MF should look like this.

Manifest-Version: 1.0
Bundle-ManifestVersion: 2
Bundle-Name: Ontology
Bundle-SymbolicName: com.acme.movie.ontology
Bundle-Version: 1.0.0.qualifier
Bundle-Vendor: ACME
Bundle-RequiredExecutionEnvironment: JavaSE-1.6
Require-Bundle: org.simantics.layer0;bundle-version="1.0.0"
Export-Package: com.acme.movie.ontology

Developing the ontology

Open Movie.pgraph and start editing.