org.topbraid.spin.util

Class AbstractGraphListener

java.lang.Object

org.topbraid.spin.util.AbstractGraphListener

All Implemented Interfaces:

org.apache.jena.graph.GraphListener

public abstract class AbstractGraphListener
extends Object
implements org.apache.jena.graph.GraphListener

An abstract GraphListeners that forwards each call into GraphListener.notifyAddTriple(org.apache.jena.graph.Graph, org.apache.jena.graph.Triple) and GraphListener.notifyDeleteTriple(org.apache.jena.graph.Graph, org.apache.jena.graph.Triple) to reduce the implementation burden of subclasses. All of the bulk operations are forwarded to notifyAddIterator(org.apache.jena.graph.Graph, java.util.Iterator<org.apache.jena.graph.Triple>) and notifyDeleteIterator(org.apache.jena.graph.Graph, java.util.Iterator<org.apache.jena.graph.Triple>). So subclasses can override those two methods to modify all the bulk operations, except the removeAll ones. For the removeAll operations, subclasses should implement notifyRemoveAll(Graph, Triple), this is only called by the default implementation of notifyEvent(Graph, Object).

Author:

Holger Knublauch, Jeremy Carroll

Constructor Summary

Constructors

Constructor and Description
AbstractGraphListener()

Method Summary

Modifier and Type	Method and Description
void	notifyAddArray(org.apache.jena.graph.Graph g, org.apache.jena.graph.Triple[] triples)
void	notifyAddGraph(org.apache.jena.graph.Graph g, org.apache.jena.graph.Graph added)
void	notifyAddIterator(org.apache.jena.graph.Graph g, Iterator<org.apache.jena.graph.Triple> it)
void	notifyAddList(org.apache.jena.graph.Graph g, List<org.apache.jena.graph.Triple> triples)
void	notifyDeleteArray(org.apache.jena.graph.Graph g, org.apache.jena.graph.Triple[] triples)
void	notifyDeleteGraph(org.apache.jena.graph.Graph g, org.apache.jena.graph.Graph removed)
void	notifyDeleteIterator(org.apache.jena.graph.Graph g, Iterator<org.apache.jena.graph.Triple> it)
void	notifyDeleteList(org.apache.jena.graph.Graph g, List<org.apache.jena.graph.Triple> list)
void	notifyEvent(org.apache.jena.graph.Graph source, Object value) value is usually a GraphEvents.
protected abstract void	notifyRemoveAll(org.apache.jena.graph.Graph source, org.apache.jena.graph.Triple pattern) Called after a removeAll modification.

Methods inherited from class java.lang.Object

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

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

notifyAddTriple, notifyDeleteTriple

Constructor Detail

AbstractGraphListener

public AbstractGraphListener()

Method Detail

notifyAddArray

public void notifyAddArray(org.apache.jena.graph.Graph g,
                           org.apache.jena.graph.Triple[] triples)

Specified by:

notifyAddArray in interface org.apache.jena.graph.GraphListener

notifyAddGraph

public void notifyAddGraph(org.apache.jena.graph.Graph g,
                           org.apache.jena.graph.Graph added)

Specified by:

notifyAddGraph in interface org.apache.jena.graph.GraphListener

notifyAddIterator

public void notifyAddIterator(org.apache.jena.graph.Graph g,
                              Iterator<org.apache.jena.graph.Triple> it)

Specified by:

notifyAddIterator in interface org.apache.jena.graph.GraphListener

notifyAddList

public void notifyAddList(org.apache.jena.graph.Graph g,
                          List<org.apache.jena.graph.Triple> triples)

Specified by:

notifyAddList in interface org.apache.jena.graph.GraphListener

notifyDeleteArray

public void notifyDeleteArray(org.apache.jena.graph.Graph g,
                              org.apache.jena.graph.Triple[] triples)

Specified by:

notifyDeleteArray in interface org.apache.jena.graph.GraphListener

notifyDeleteGraph

public void notifyDeleteGraph(org.apache.jena.graph.Graph g,
                              org.apache.jena.graph.Graph removed)

Specified by:

notifyDeleteGraph in interface org.apache.jena.graph.GraphListener

notifyDeleteIterator

public void notifyDeleteIterator(org.apache.jena.graph.Graph g,
                                 Iterator<org.apache.jena.graph.Triple> it)

Specified by:

notifyDeleteIterator in interface org.apache.jena.graph.GraphListener

notifyDeleteList

public void notifyDeleteList(org.apache.jena.graph.Graph g,
                             List<org.apache.jena.graph.Triple> list)

Specified by:

notifyDeleteList in interface org.apache.jena.graph.GraphListener

notifyEvent

public void notifyEvent(org.apache.jena.graph.Graph source,
                        Object value)

value is usually a GraphEvents. Special attention is drawn to GraphEvents.removeAll and events whose GraphEvents.getTitle() is "remove" (see GraphEvents.remove(Node, Node, Node). These correspond to the operations for removeAll, and remove, respectively. Unlike other notifications, the listener cannot tell which triples have been modified, since they have already been deleted by the time this event is sent, and the event does not include a record of them. This default implementation maps these two events to notifyRemoveAll(Graph, Triple) calls.

Specified by:

notifyEvent in interface org.apache.jena.graph.GraphListener

notifyRemoveAll

protected abstract void notifyRemoveAll(org.apache.jena.graph.Graph source,
                                        org.apache.jena.graph.Triple pattern)

Called after a removeAll modification. The actual triples deleted cannot be identified easily. See notifyEvent(Graph, Object) for explanation of this method.

Parameters:

source -

pattern - The pattern of triples being removed, often Triple.ANY.