Difference between revisions of "LoadOWLOntologyFromDB"
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<code> | <code> | ||
| − | Project prj = Project.loadProjectFromFile("/home/pizza_db.pprj",errors); | + | <pre> |
| − | OWLModel owlModel = (OWLModel) prj.getKnowledgeBase();< | + | Project prj = Project.loadProjectFromFile("/home/pizza_db.pprj",errors); |
| − | + | OWLModel owlModel = (OWLModel) prj.getKnowledgeBase(); | |
| + | </pre> | ||
</code><br /><br /> | </code><br /><br /> | ||
Revision as of 12:39, August 2, 2008
How do I load a Protege-OWL ontology from a Protege database using the API?
Method 1
The simplest way to load a Protege-OWL ontology from a Protege database is to programatically load the project file (.pprj), which already contains all of the necessary database connection information:
Project prj = Project.loadProjectFromFile("/home/pizza_db.pprj",errors);
OWLModel owlModel = (OWLModel) prj.getKnowledgeBase();
Method 2
The second method should be used if there is no project file (.pprj) associated with the Protege-OWL database ontology:
JenaKnowledgeBaseFactory.useStandalone = false;
Collection errors = new ArrayList();
//the "false" argument means that it won't overide the existing table
OwlDatabaseCreator creator = new OwlDatabaseCreator(false);
creator.setDriver("com.mysql.jdbc.Driver");
creator.setURL("jdbc:mysql://localhost/protege");
creator.setUsername("protege");
creator.setPassword("mypass");
creator.setTable("tableName");
try {
creator.create(errors);
OWLModel owlModel = creator.getOWLModel();
} catch (OntologyLoadException e) {
e.printStackTrace();
}
The "false" argument to the
OwlDatabaseCreatorclass tells it to use an existing database rather than overwrite it.
