net.exogeni.orca.ndl.util

Class ModelFolders

java.lang.Object

net.exogeni.orca.ndl.util.ModelFolders

public class ModelFolders
extends java.lang.Object

Singleton that knows all about model folder storage

Author:

ibaldin

Field Summary

Fields

Modifier and Type	Field and Description
protected java.util.Set<com.hp.hpl.jena.query.Dataset>	datasets
protected java.util.Map<com.hp.hpl.jena.ontology.OntModel,net.exogeni.orca.ndl.util.ModelFolders.ModelFolder>	modelFolders
protected boolean	noMoreFolders

Method Summary

Modifier and Type	Method and Description
void	closeDatasets() Close all datasets (e.g.
java.io.File	createNamedDirectory(java.lang.String p) Return a named directory (create if needed) with no exit hooks
java.io.File	createTempDirectory(java.lang.String prefix) Create a temporary directory with no exit hooks
static void	deleteFolder(java.lang.String p) Remove a folder recursively
void	deleteTDBOnShutDown() Invoked on shut down, deletes all ephemeral TDB folders
static boolean	folderExists(java.io.File folder) Check if a model folder exists
static boolean	folderExists(java.lang.String p) Check if a model folder exists
static ModelFolders	getInstance()
java.lang.String	getPath(com.hp.hpl.jena.ontology.OntModel m)
boolean	isEphemeral(com.hp.hpl.jena.ontology.OntModel m)
boolean	isInTDB(com.hp.hpl.jena.ontology.OntModel m)
void	put(com.hp.hpl.jena.ontology.OntModel m, com.hp.hpl.jena.query.Dataset ds, java.lang.String path, boolean e) Add a new TDB model entry for bookkeeping
boolean	remove(com.hp.hpl.jena.ontology.OntModel m) Remove a folder belonging to the model (hopefully after it is closed).

Methods inherited from class java.lang.Object

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

Field Detail

modelFolders

protected java.util.Map<com.hp.hpl.jena.ontology.OntModel,net.exogeni.orca.ndl.util.ModelFolders.ModelFolder> modelFolders

datasets

protected java.util.Set<com.hp.hpl.jena.query.Dataset> datasets

noMoreFolders

protected boolean noMoreFolders

Method Detail

getInstance

public static ModelFolders getInstance()

deleteTDBOnShutDown

public void deleteTDBOnShutDown()

Invoked on shut down, deletes all ephemeral TDB folders

createTempDirectory

public java.io.File createTempDirectory(java.lang.String prefix)

Create a temporary directory with no exit hooks

Parameters:

prefix - - optional prefix

Returns:

file

createNamedDirectory

public java.io.File createNamedDirectory(java.lang.String p)

Return a named directory (create if needed) with no exit hooks

Parameters:

p - p

Returns:

file

deleteFolder

public static void deleteFolder(java.lang.String p)

Remove a folder recursively

Parameters:

p - p

folderExists

public static boolean folderExists(java.io.File folder)

Check if a model folder exists

Parameters:

folder - folder

Returns:

true or false

folderExists

public static boolean folderExists(java.lang.String p)

Check if a model folder exists

Parameters:

p - p

Returns:

true or false

put

public void put(com.hp.hpl.jena.ontology.OntModel m,
                com.hp.hpl.jena.query.Dataset ds,
                java.lang.String path,
                boolean e)
         throws java.lang.Exception

Add a new TDB model entry for bookkeeping

Parameters:

m - - the model

ds - - its dataset

path - - the path where it will be kept

e - - whether it is ephemeral or permanent

Throws:

java.lang.Exception - in case of error

remove

public boolean remove(com.hp.hpl.jena.ontology.OntModel m)

Remove a folder belonging to the model (hopefully after it is closed). The method returns false if the model is still open or if the model didn't have a folder.

Parameters:

m - m

Returns:

true or false

getPath

public java.lang.String getPath(com.hp.hpl.jena.ontology.OntModel m)

isEphemeral

public boolean isEphemeral(com.hp.hpl.jena.ontology.OntModel m)

isInTDB

public boolean isInTDB(com.hp.hpl.jena.ontology.OntModel m)

closeDatasets

public void closeDatasets()

Close all datasets (e.g. on shutdown)