Difference between revisions of "LoadOWLOntologyFromDB"
From Protege Wiki
m |
m (getOwlModel method name correction) |
||
Line 29: | Line 29: | ||
try { | try { | ||
creator.create(errors); | creator.create(errors); | ||
− | OWLModel owlModel = creator. | + | OWLModel owlModel = creator.getOwlModel(); |
} catch (OntologyLoadException e) { | } catch (OntologyLoadException e) { | ||
e.printStackTrace(); | e.printStackTrace(); |
Latest revision as of 05:03, May 1, 2010
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.