org.topbraid.spin.system

Class SPINLabels

java.lang.Object

org.topbraid.spin.system.SPINLabels

public class SPINLabels
extends Object

A singleton that is used to render resources into strings. By default this displays qnames (if possible). Can be changed, for example, to switch to displaying rdfs:labels instead of qnames etc.

Author:

Holger Knublauch

Constructor Summary

Constructors

Constructor and Description
SPINLabels()

Method Summary

Modifier and Type	Method and Description
static void	appendTemplateCallLabel(StringBuffer buffer, String labelTemplate, Map<String,org.apache.jena.rdf.model.RDFNode> args) Renders a template call's label template into a label by inserting the evaluated SPARQL expressions into appropriate spaces marked with {expression}.
static SPINLabels	get() Gets the singleton instance of this class.
String	getCustomizedLabel(org.apache.jena.rdf.model.Resource resource) Gets a "human-readable" label for a given Resource.
String	getLabel(org.apache.jena.rdf.model.Resource resource) Gets the label for a given Resource.
String	getNodeLabel(org.apache.jena.rdf.model.RDFNode node)
static void	set(SPINLabels value) Replaces the singleton to a subclass with different behavior.

Methods inherited from class java.lang.Object

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

Constructor Detail

SPINLabels

public SPINLabels()

Method Detail

get

public static SPINLabels get()

Gets the singleton instance of this class.

Returns:

the singleton

set

public static void set(SPINLabels value)

Replaces the singleton to a subclass with different behavior. This is used by TopBraid, which has its own rendering engine.

Parameters:

value - the new engine

getCustomizedLabel

public String getCustomizedLabel(org.apache.jena.rdf.model.Resource resource)

Gets a "human-readable" label for a given Resource. This checks for any existing rdfs:label, otherwise falls back to getLabel().

Parameters:

resource -

Returns:

the label (never null)

getLabel

public String getLabel(org.apache.jena.rdf.model.Resource resource)

Gets the label for a given Resource.

Parameters:

resource - the Resource to get the label of

Returns:

the label (never null)

getNodeLabel

public String getNodeLabel(org.apache.jena.rdf.model.RDFNode node)

appendTemplateCallLabel

public static void appendTemplateCallLabel(StringBuffer buffer,
                                           String labelTemplate,
                                           Map<String,org.apache.jena.rdf.model.RDFNode> args)

Renders a template call's label template into a label by inserting the evaluated SPARQL expressions into appropriate spaces marked with {expression}. Currently only simple variables are supported, e.g. {?test }.

Parameters:

buffer - the StringBuffer to write to

labelTemplate - the labelTemplate

args - the arguments a Map of pre-bound variables (supplied arguments)