Examples with DereferencerImpl org.apache.stanbol.enhancer.engines.refactor.dereferencer.DereferencerImpl used on opensource projects

Example 1 with DereferencerImpl

use of org.apache.stanbol.enhancer.engines.refactor.dereferencer.DereferencerImpl in project stanbol by apache.

the class RefactorEnhancementEngine method initEngine.

/**
     * Method for adding ontologies to the scope core ontology.
     * <ol>
     * <li>Get all the ontologies from the property.</li>
     * <li>Create a base scope.</li>
     * <li>Retrieve the ontology space from the scope.</li>
     * <li>Add the ontologies to the scope via ontology space.</li>
     * </ol>
     */
private void initEngine(RefactorEnhancementEngineConf engineConfiguration) {
    // IRI dulcifierScopeIRI = org.semanticweb.owlapi.model.IRI.create((String) context.getProperties().get(SCOPE));
    String scopeId = engineConfiguration.getScope();
    // Create or get the scope with the configured ID
    try {
        scope = onManager.createOntologyScope(scopeId);
    // No need to deactivate a newly created scope.
    } catch (DuplicateIDException e) {
        scope = onManager.getScope(scopeId);
        onManager.setScopeActive(scopeId, false);
    }
    // All resolvable ontologies stated in the configuration are loaded into the core space.
    OntologySpace ontologySpace = scope.getCoreSpace();
    ontologySpace.tearDown();
    String[] coreScopeOntologySet = engineConfiguration.getScopeCoreOntologies();
    List<String> success = new ArrayList<String>(), failed = new ArrayList<String>();
    try {
        log.info("Will now load requested ontology into the core space of scope '{}'.", scopeId);
        OWLOntologyManager sharedManager = OWLManager.createOWLOntologyManager();
        org.semanticweb.owlapi.model.IRI physicalIRI = null;
        for (int o = 0; o < coreScopeOntologySet.length; o++) {
            String url = coreScopeOntologySet[o];
            try {
                physicalIRI = org.semanticweb.owlapi.model.IRI.create(url);
            } catch (Exception e) {
                failed.add(url);
            }
            try {
                // TODO replace with a Clerezza equivalent
                ontologySpace.addOntology(new RootOntologySource(physicalIRI, sharedManager));
                success.add(url);
            } catch (OWLOntologyCreationException e) {
                log.error("Failed to load ontology from physical location " + physicalIRI + " Continuing with next...", e);
                failed.add(url);
            }
        }
    } catch (UnmodifiableOntologyCollectorException ex) {
        log.error("Ontology space {} was found locked for modification. Cannot populate.", ontologySpace);
    }
    for (String s : success) log.info(" >> {} : SUCCESS", s);
    for (String s : failed) log.info(" >> {} : FAILED", s);
    ontologySpace.setUp();
    // if (!onManager.containsScope(scopeId)) onManager.registerScope(scope);
    onManager.setScopeActive(scopeId, true);
    /*
         * The first thing to do is to create a recipe in the rule store that can be used by the engine to
         * refactor the enhancement graphs.
         */
    String recipeId = engineConfiguration.getRecipeId();
    Recipe recipe = null;
    try {
        recipe = ruleStore.createRecipe(new IRI(recipeId), null);
    } catch (AlreadyExistingRecipeException e1) {
        log.error("A recipe with ID {} already exists in the store.", recipeId);
    }
    if (recipe != null) {
        log.debug("Initialised blank recipe with ID {}", recipeId);
        /*
             * The set of rule to put in the recipe can be provided by the user. A default set of rules is
             * provided in /META-INF/default/seo_rules.sem. Use the property engine.refactor in the felix
             * console to pass to the engine your set of rules.
             */
        String recipeLocation = engineConfiguration.getRecipeLocation();
        InputStream recipeStream = null;
        String recipeString = null;
        if (recipeLocation != null && !recipeLocation.isEmpty()) {
            Dereferencer dereferencer = new DereferencerImpl();
            try {
                recipeStream = dereferencer.resolve(recipeLocation);
                log.debug("Loaded recipe from external source {}", recipeLocation);
            } catch (FileNotFoundException e) {
                log.error("Recipe Stream is null.", e);
            }
        } else {
            // TODO remove this part (or manage it better in the @Activate method).
            String loc = "/META-INF/default/seo_rules.sem";
            recipeStream = getClass().getResourceAsStream(loc);
            log.debug("Loaded default recipe in {}.", loc);
        }
        if (recipeStream != null) {
            BufferedReader reader = new BufferedReader(new InputStreamReader(recipeStream));
            recipeString = "";
            String line = null;
            try {
                while ((line = reader.readLine()) != null) recipeString += line;
            } catch (IOException e) {
                log.error("Failed to load Refactor Engine recipe from stream. Aborting read. ", e);
                recipeString = null;
            }
        }
        log.debug("Recipe content follows :\n{}", recipeString);
        if (recipeString != null) {
            ruleStore.addRulesToRecipe(recipe, recipeString, null);
            log.debug("Added rules to recipe {}", recipeId);
        }
    }
}