prajna.ontology.inference

Class SwrlAugmenter

java.lang.Object

prajna.ontology.SemanticAugmenter

prajna.ontology.inference.SwrlAugmenter

public class SwrlAugmenter
extends SemanticAugmenter

Semantic Augmenter that uses SWRL rules to derive additional information.

Author:

Edward Swing

Constructor Summary

Constructors

Constructor and Description
SwrlAugmenter()

Method Summary

Methods

Modifier and Type	Method and Description
boolean	augment(OwlThing thing) Augment a particular OwlThing.
java.lang.String	getConfig() Get the configuration information.
protected java.util.Set<java.lang.String>	getNewValues(OwlThing thing, Property prop) Get new values for the particular OwlThing and property.
protected java.util.Set<java.lang.String>	getRefineValues(OwlThing thing) Get any possible values used to refine the class of the OwlThing passed in.
void	setConfig(java.lang.String configValue) This method allows the individual augmenters to have a configuration parameter.

Methods inherited from class prajna.ontology.SemanticAugmenter

addProperties, addProperty, getOwlClass, getProperties, isOverwrite, isRefine, setOverwrite, setOwlClass, setRefine, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

SwrlAugmenter

public SwrlAugmenter()

Method Detail

augment

public boolean augment(OwlThing thing)

Augment a particular OwlThing. This method overrides the implementation in SemanticAugmenter to derive all triples, and save those triples with the subject matching thing. It then calls the superclass method.

Overrides:

augment in class SemanticAugmenter

Parameters:

thing - the OwlThing to enhance

Returns:

true if the thing changed as a result of this call, false otherwise.

getConfig

public java.lang.String getConfig()

Get the configuration information. This method returns the path to the SWRL file

Overrides:

getConfig in class SemanticAugmenter

Returns:

the SWRL file path

getNewValues

protected java.util.Set<java.lang.String> getNewValues(OwlThing thing,
                                           Property prop)

Get new values for the particular OwlThing and property. This method iterates through the set of Rules to determine new information. If any of the newly-derived RDF triples match the subject and property, the corresponding object is returned.

Specified by:

getNewValues in class SemanticAugmenter

Parameters:

thing - the OwlThing to augment

prop - the property to augment

Returns:

the set of new values

getRefineValues

protected java.util.Set<java.lang.String> getRefineValues(OwlThing thing)

Get any possible values used to refine the class of the OwlThing passed in. This implementation simply returns null, as the SWRL rules do not support refinement.

Specified by:

getRefineValues in class SemanticAugmenter

Parameters:

thing - the thing to find the possible refinements for

Returns:

the set of possible refinement values for the OwlThing

setConfig

public void setConfig(java.lang.String configValue)

This method allows the individual augmenters to have a configuration parameter. By default, this method does nothing. However, those augmenters which need configuration information should override this method

Overrides:

setConfig in class SemanticAugmenter

Parameters:

configValue - a configuration string. The format for this string is dependent on the individual augmenter