org.apache.jena.riot.other
Class GLib

java.lang.Object
  org.apache.jena.riot.other.GLib

public class GLib
extends Object

A collection of Graph/Triple/Node related functions

Field Summary

static Transform<Quad,Node>	projectQuadGraphName Transform quad to graphname
static Transform<Quad,Node>	projectQuadObject Transform quad to object
static Transform<Quad,Node>	projectQuadPredicate Transform quad to predicate
static Transform<Quad,Node>	projectQuadSubject Transform quad to subject
static Transform<Triple,Node>	projectTripleObject Transform triple to object
static Transform<Triple,Node>	projectTriplePredicate Transform triple to predicate
static Transform<Triple,Node>	projectTripleSubject Transform triple to subject

Constructor Summary

GLib()

Method Summary

static Iterator<Node>	listObjects(Graph graph) List the objects in a graph (no duplicates)
static Iterator<Node>	listPredicates(Graph graph) List the predicates in a graph (no duplicates)
static Iterator<Node>	listSubjects(Graph graph) List the subjects in a graph (no duplicates)
static Node	nullAsAny(Node x) Convert null to Node.ANY
static Node	nullAsDft(Node x, Node dft) Convert null to some default Node
static Iterator<Node>	quad2graphName(Iterator<Quad> iter) Project quad to graphname
static Iterator<Node>	quad2object(Iterator<Quad> iter) Project quad to object
static Iterator<Node>	quad2predicate(Iterator<Quad> iter) Project quad to predicate
static Iterator<Node>	quad2subject(Iterator<Quad> iter) Project quad to graphname
static Iter<Triple>	quads2triples(Iterator<Quad> iter) Project quads to triples
static Iterator<Node>	triple2object(Iterator<Triple> iter) Project triple to object
static Iterator<Node>	triple2predicate(Iterator<Triple> iter) Project triple to predicate
static Iterator<Node>	triple2subject(Iterator<Triple> iter) Project triple to subject

Methods inherited from class java.lang.Object

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

Field Detail

projectQuadGraphName

public static Transform<Quad,Node> projectQuadGraphName

Transform quad to graphname

projectQuadSubject

public static Transform<Quad,Node> projectQuadSubject

Transform quad to subject

projectQuadPredicate

public static Transform<Quad,Node> projectQuadPredicate

Transform quad to predicate

projectQuadObject

public static Transform<Quad,Node> projectQuadObject

Transform quad to object

projectTripleSubject

public static Transform<Triple,Node> projectTripleSubject

Transform triple to subject

projectTriplePredicate

public static Transform<Triple,Node> projectTriplePredicate

Transform triple to predicate

projectTripleObject

public static Transform<Triple,Node> projectTripleObject

Transform triple to object

Constructor Detail

GLib

public GLib()

Method Detail

nullAsAny

public static Node nullAsAny(Node x)

Convert null to Node.ANY

nullAsDft

public static Node nullAsDft(Node x,
                             Node dft)

Convert null to some default Node

listSubjects

public static Iterator<Node> listSubjects(Graph graph)

List the subjects in a graph (no duplicates)

listPredicates

public static Iterator<Node> listPredicates(Graph graph)

List the predicates in a graph (no duplicates)

listObjects

public static Iterator<Node> listObjects(Graph graph)

List the objects in a graph (no duplicates)

quads2triples

public static Iter<Triple> quads2triples(Iterator<Quad> iter)

Project quads to triples

quad2graphName

public static Iterator<Node> quad2graphName(Iterator<Quad> iter)

Project quad to graphname

quad2subject

public static Iterator<Node> quad2subject(Iterator<Quad> iter)

Project quad to graphname

quad2predicate

public static Iterator<Node> quad2predicate(Iterator<Quad> iter)

Project quad to predicate

quad2object

public static Iterator<Node> quad2object(Iterator<Quad> iter)

Project quad to object

triple2subject

public static Iterator<Node> triple2subject(Iterator<Triple> iter)

Project triple to subject

triple2predicate

public static Iterator<Node> triple2predicate(Iterator<Triple> iter)

Project triple to predicate

triple2object

public static Iterator<Node> triple2object(Iterator<Triple> iter)

Project triple to object