Module org.apache.jena.rdfpatch

Package org.apache.jena.rdfpatch.system

Class GraphChanges

java.lang.Object

org.apache.jena.sparql.graph.GraphWrapper

org.apache.jena.rdfpatch.system.GraphChanges

All Implemented Interfaces:

Graph

Direct Known Subclasses:

GraphRealChanges

public class GraphChanges
extends GraphWrapper

Connect a Graph with RDFChanges. All operations on the Graph that cause changes have the change sent to the RDFChanges.

Use GraphRealChanges to get a graph that logs only changes that have a real effect - that makes the changes log reversible (play delete for each add) to undo a sequence of changes.

The graph name is settable; it is arbitrary, or null, and not deduced from the graph.

If the graph is a graph from a dataset and the same graph name is to be used, then instead of this class, get a graph from DatasetGraphChanges.

See Also:

• DatasetGraphChanges
• RDFChanges

Field Summary

Fields inherited from interface org.apache.jena.graph.Graph

emptyGraph

Constructor Summary

Constructors

Constructor	Description
GraphChanges(Graph graph, Node graphName, RDFChanges changes)	Send changes to a graph to a RDFChanges with the specified graph name.
GraphChanges(Graph graph, RDFChanges changes)	Send changes to a graph to a RDFChanges with null for the graph name.

Method Summary

Modifier and Type	Method	Description
void	add(Triple t)
void	clear()
void	delete(Triple t)
PrefixMapping	getPrefixMapping()
TransactionHandler	getTransactionHandler()
void	remove(Node s, Node p, Node o)

Methods inherited from class org.apache.jena.sparql.graph.GraphWrapper

close, contains, contains, dependsOn, find, find, get, getCapabilities, getEventManager, isClosed, isEmpty, isIsomorphicWith, size

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.jena.graph.Graph

add, delete, find, stream, stream

Constructor Details

GraphChanges

public GraphChanges(Graph graph,
 RDFChanges changes)

Send changes to a graph to a RDFChanges with null for the graph name.

GraphChanges

public GraphChanges(Graph graph,
 Node graphName,
 RDFChanges changes)

Send changes to a graph to a RDFChanges with the specified graph name. The graph name may be null for "no name".

Method Details

add

public void add(Triple t)

Specified by:

add in interface Graph

Overrides:

add in class GraphWrapper

delete

public void delete(Triple t)

Specified by:

delete in interface Graph

Overrides:

delete in class GraphWrapper

clear

public void clear()

Specified by:

clear in interface Graph

Overrides:

clear in class GraphWrapper

getPrefixMapping

public PrefixMapping getPrefixMapping()

Specified by:

getPrefixMapping in interface Graph

Overrides:

getPrefixMapping in class GraphWrapper

remove

public void remove(Node s,
 Node p,
 Node o)

Specified by:

remove in interface Graph

Overrides:

remove in class GraphWrapper

getTransactionHandler

public TransactionHandler getTransactionHandler()

Specified by:

getTransactionHandler in interface Graph

Overrides:

getTransactionHandler in class GraphWrapper