org.apache.clerezza.platform.concepts.core

Class ConceptsFinder

java.lang.Object

org.apache.clerezza.platform.concepts.core.ConceptsFinder

@Service(value=java.lang.Object.class)
@Property(name="javax.ws.rs",
          boolValue=true)
public class ConceptsFinder
extends Object

This JAX-RS resource can be used to search concepts accessible through registered ConceptProviders. If no LocalConceptProvider is registered for ConceptManipulator.FREE_CONCEPT_SCHEME, then one is created to find free concepts in the content graph. Concept providers are prioritized. The URI, SKOS:prefLabel and RDFS:comment of a concept from a provider of a higher priority will be used instead of those concepts having an OWL:sameAs relation with this concept, but from a provider of lower priority. Implicitly created LocalConceptProvider for free concepts has the lowest priority. The URI path of this service is /concepts/find.

Author:

hasan

Field Summary

Fields

Modifier and Type	Field and Description
protected ConceptProviderManager	conceptProviderManager

Constructor Summary

Constructors

Constructor and Description
ConceptsFinder()

Method Summary

Methods

Modifier and Type	Method and Description
protected void	activate(org.osgi.service.component.ComponentContext context)
GraphNode	findConcepts(String searchTerm) Searches concepts for a specified search term.

Methods inherited from class java.lang.Object

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

Field Detail

conceptProviderManager

@Reference
protected ConceptProviderManager conceptProviderManager

Constructor Detail

ConceptsFinder

public ConceptsFinder()

Method Detail

activate

protected void activate(org.osgi.service.component.ComponentContext context)
                 throws URISyntaxException

Throws:

URISyntaxException

findConcepts

public GraphNode findConcepts(String searchTerm)

Searches concepts for a specified search term. The actual search task is delegated to each ConceptProvider instance. The results from each ConceptProvider are merged into a single result graph. However, concepts from providers of lower priority are only considered if they are not staying in an OWL:sameAs relation with concepts from providers of higher priority.

Parameters:

searchTerm - The search term in form of a String.

Returns:

A GraphNode containing the search results.