org.apache.clerezza.rdf.cris

Class FacetCollector<T>

java.lang.Object

org.apache.clerezza.rdf.cris.FacetCollector<T>

Direct Known Subclasses:

CountFacetCollector

public abstract class FacetCollector<T>
extends Object

This class is a container that defines facets that should be collected and stores them. It can be used for faceted search in CRIS.

Author:

daniel

Constructor Summary

Constructors

Constructor and Description
FacetCollector()

Method Summary

Methods

Modifier and Type	Method and Description
abstract void	addFacetProperty(VirtualProperty property) Add a property over which facets are collected.
abstract Set<Map.Entry<String,T>>	getFacets(VirtualProperty property) Returns all facets for the given property.
abstract T	getFacetValue(VirtualProperty property, String facet) Returns a facet value.
abstract Collection<VirtualProperty>	getProperties() Returns the properties for which facets are collected..

Methods inherited from class java.lang.Object

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

Constructor Detail

FacetCollector

public FacetCollector()

Method Detail

addFacetProperty

public abstract void addFacetProperty(VirtualProperty property)

Add a property over which facets are collected. Example: FOAF:firstName --> Resulting facets may be "John", "Adam", etc.

Parameters:

property - A virtual property over which facets are collected.

getProperties

public abstract Collection<VirtualProperty> getProperties()

Returns the properties for which facets are collected..

Returns:

The properties.

getFacets

public abstract Set<Map.Entry<String,T>> getFacets(VirtualProperty property)

Returns all facets for the given property.

Parameters:

property - the property.

Returns:

A set with facets and facet values.

getFacetValue

public abstract T getFacetValue(VirtualProperty property,
              String facet)

Returns a facet value.

Parameters:

property - The property.

facet - The facet.

Returns:

The facet value.