org.apache.clerezza.rdf.cris

Class PropertyHolder

java.lang.Object

org.apache.clerezza.rdf.cris.VirtualProperty

org.apache.clerezza.rdf.cris.PropertyHolder

public class PropertyHolder
extends VirtualProperty

Adapts RDF properties to be VirtualProperties.

Author:

rbn, daniel

Property Summary

Properties inherited from class org.apache.clerezza.rdf.cris.VirtualProperty

isFacetProperty

Constructor Summary

Constructors

Constructor and Description
PropertyHolder(UriRef property) Creates a new PropertyHolder that wraps an RDF property with facet search enabled.
PropertyHolder(UriRef property, boolean facetProperty) Creates a new PropertyHolder that wraps an RDF property.

Method Summary

Methods

Modifier and Type	Method and Description
protected List<UriRef>	pathToIndexedResource(UriRef property) The shortest path of inverse RDF properties from property to the indexed resource, this is an empty List for PropertyHolders, for properties in a PathVirtualProperties this is a list with the elements passed to its constructor till the first occurrence of property in reverse order. This method just returns the shortest path as virtual properties with the same base property in different positions are assumed to be very rare.
protected List<String>	value(GraphNode node) Returns the value of this property.

Methods inherited from class org.apache.clerezza.rdf.cris.VirtualProperty

equals, getBaseProperties, getStringKey, hashCode, isFacetProperty, listDigest

Methods inherited from class java.lang.Object

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

Constructor Detail

PropertyHolder

public PropertyHolder(UriRef property)

Creates a new PropertyHolder that wraps an RDF property with facet search enabled.

Parameters:

property - the property to wrap.

PropertyHolder

public PropertyHolder(UriRef property,
              boolean facetProperty)

Creates a new PropertyHolder that wraps an RDF property.

Parameters:

property - the property to wrap.

Method Detail

value

protected List<String> value(GraphNode node)

Description copied from class: VirtualProperty

Returns the value of this property.

Specified by:

value in class VirtualProperty

Parameters:

node - The node containing the original properties (where to get the literal value).

Returns:

The value.

pathToIndexedResource

protected List<UriRef> pathToIndexedResource(UriRef property)

Description copied from class: VirtualProperty

The shortest path of inverse RDF properties from property to the indexed resource, this is an empty List for PropertyHolders, for properties in a PathVirtualProperties this is a list with the elements passed to its constructor till the first occurrence of property in reverse order.
This method just returns the shortest path as virtual properties with the same base property in different positions are assumed to be very rare.

Specified by:

pathToIndexedResource in class VirtualProperty

Parameters:

property - the property.