se.kmr.scam.rdf.util
Class Clean

java.lang.Object
  se.kmr.scam.rdf.util.Clean

public class Clean

extends Object

Helper for cleaning RDF models.

Title:

Description:

Copyright: Copyright (c) 2002

Company:

Version:

$Revision $

Author:

jand

Field Summary

protected static org.apache.log4j.Category

LOG Log4j-logger

Constructor Summary

Clean()

Method Summary

static void	main(String[] args)
static Model	replace(Model m) Replace all nodes in a Model.
static Model	sweep(Model m) Remove all non-valued branches in Model.

Methods inherited from class java.lang.Object

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

Field Detail

LOG

protected static org.apache.log4j.Category LOG

Log4j-logger

Constructor Detail

Clean

public Clean()

Method Detail

sweep

public static Model sweep(Model m)
                   throws RDFException

Remove all non-valued branches in Model. A branch is considered valued when the "leafs" are either NA-resources or non-empty Literals.
Note: A resource having ONLY a RDF.type property is considered non-valued!

Parameters:

m - Model

Returns:

Model - same as param m

Throws:

RDFException

replace

public static Model replace(Model m)
                     throws RDFException

Replace all nodes in a Model. All anonymous resources (bNodes) will be "replaced" by new ones and NA-resources will be changed to ""-resources. Literals will be set to empty String (language is preserved). The only value (object) that is preserved is that pointed to by RDF.type.

Returns:

Model - same as param m

Throws:

RDFException

To do:

Only reuse RDF.type objects?, What if RDF.type has its own sub-model?

main

public static void main(String[] args)