org.fcrepo.kernel.api.utils

Class GraphDifferencer

java.lang.Object

org.fcrepo.kernel.api.utils.GraphDifferencer

public class GraphDifferencer
extends Object

A wrapping Stream that calculates two differences between a Graph A and a source Stream B. The differences are (A - (A ∩ B)) and (B - (A ∩ B)). The ordinary output of this stream is (B - (A ∩ B)), and after exhaustion, sets containing (A - (A ∩ B)) and (A ∩ B) are available.

Since:

Oct 24, 2013

Author:

ajs6f, acoburn

Constructor Summary

Constructors

Constructor and Description
GraphDifferencer(com.hp.hpl.jena.graph.Graph replacement, java.util.stream.Stream<com.hp.hpl.jena.graph.Triple> original) Diff a graph against a stream of triples
GraphDifferencer(com.hp.hpl.jena.rdf.model.Model replacement, java.util.stream.Stream<com.hp.hpl.jena.graph.Triple> original) Diff a Model against a stream of triples

Method Summary

Modifier and Type	Method and Description
java.util.stream.Stream<com.hp.hpl.jena.graph.Triple>	common() This method will return null until the source iterator is exhausted.
java.util.stream.Stream<com.hp.hpl.jena.graph.Triple>	difference() This method returns the difference between the two input sources.
java.util.stream.Stream<com.hp.hpl.jena.graph.Triple>	notCommon() This method will return null until the source iterator is exhausted.

Methods inherited from class java.lang.Object

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

Constructor Detail

GraphDifferencer

public GraphDifferencer(com.hp.hpl.jena.rdf.model.Model replacement,
                        java.util.stream.Stream<com.hp.hpl.jena.graph.Triple> original)

Diff a Model against a stream of triples

Parameters:

replacement - the replacement

original - the original

GraphDifferencer

public GraphDifferencer(com.hp.hpl.jena.graph.Graph replacement,
                        java.util.stream.Stream<com.hp.hpl.jena.graph.Triple> original)

Diff a graph against a stream of triples

Parameters:

replacement - the replacement

original - the original

Method Detail

difference

public java.util.stream.Stream<com.hp.hpl.jena.graph.Triple> difference()

This method returns the difference between the two input sources.

Returns:

The differences between the two inputs.

common

public java.util.stream.Stream<com.hp.hpl.jena.graph.Triple> common()

This method will return null until the source iterator is exhausted.

Returns:

The elements that turned out to be common to the two inputs.

notCommon

public java.util.stream.Stream<com.hp.hpl.jena.graph.Triple> notCommon()

This method will return null until the source iterator is exhausted.

Returns:

The elements that turned out not to be common to the two inputs.