Package edu.cornell.mannlib.vitro.webapp.servlet.setup

Class RDFFilesLoader

java.lang.Object

edu.cornell.mannlib.vitro.webapp.servlet.setup.RDFFilesLoader

public class RDFFilesLoader
extends Object

Help to load RDF files on first time and on every startup.

Method Summary

Modifier and Type	Method	Description
static boolean	areIsomporphic(org.apache.jena.rdf.model.Model m1, org.apache.jena.rdf.model.Model m2)	Check 'isomorphism' for purposes of propagating firsttime changes.
static Set<String>	getEnabledLocales(javax.servlet.ServletContext ctx)
static void	loadEveryTimeFiles(javax.servlet.ServletContext ctx, String modelPath, org.apache.jena.ontology.OntModel model)	Load the "every time" files.
static void	loadFirstTimeFiles(javax.servlet.ServletContext ctx, String modelPath, org.apache.jena.rdf.model.Model model, boolean firstTime)	Load the "first time" files if we say it is the first time.
static void	removeBlankTriples(org.apache.jena.rdf.model.Model model)	Remove all triples where subject or object is blank (Anon)
static void	removeChangesThatConflictWithUIEdits(org.apache.jena.rdf.model.Model baseModel, org.apache.jena.rdf.model.Model userModel, org.apache.jena.rdf.model.Model changesModel)	Check if the user model (UI) changes conflict with the changes made to the firsttime.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

loadFirstTimeFiles

public static void loadFirstTimeFiles(javax.servlet.ServletContext ctx,
                                      String modelPath,
                                      org.apache.jena.rdf.model.Model model,
                                      boolean firstTime)

Load the "first time" files if we say it is the first time. The location is based on the home directory and the model path: "abox", "display", etc. The files from the directory are added to the model.

loadEveryTimeFiles

public static void loadEveryTimeFiles(javax.servlet.ServletContext ctx,
                                      String modelPath,
                                      org.apache.jena.ontology.OntModel model)

Load the "every time" files. The location is based on the home directory and the model path: "abox", "display", etc. The files from the directory become a sub-model of the model.

getEnabledLocales

public static Set<String> getEnabledLocales(javax.servlet.ServletContext ctx)

removeChangesThatConflictWithUIEdits

public static void removeChangesThatConflictWithUIEdits(org.apache.jena.rdf.model.Model baseModel,
                                                        org.apache.jena.rdf.model.Model userModel,
                                                        org.apache.jena.rdf.model.Model changesModel)

Check if the user model (UI) changes conflict with the changes made to the firsttime. If there is conflict, the user model UI value will be left unchanged.

Parameters:

baseModel - firsttime backup model

userModel - current state in the system (user/UI-model)

changesModel - the changes between firsttime-files and firsttime-backup

removeBlankTriples

public static void removeBlankTriples(org.apache.jena.rdf.model.Model model)

Remove all triples where subject or object is blank (Anon)

areIsomporphic

public static boolean areIsomporphic(org.apache.jena.rdf.model.Model m1,
                                     org.apache.jena.rdf.model.Model m2)

Check 'isomorphism' for purposes of propagating firsttime changes. Run Jena's isomorphism check, but if it fails only due to blank nodes, ignore and treat as isomorphic anyway. (Auto-updating firsttime changes should occur only with named nodes.)

Parameters:

m1 -

m2 -

Returns:

true if models are isomorphic or any lack of isomorphism exists only in blank nodes