Interface GraphListener
- All Known Subinterfaces:
GraphEventManager
- All Known Implementing Classes:
ModelListenerAdapter
,SimpleEventManager
The notifications are, in general, given before further changes to the graph are made. Listeners are discouraged from making further modifications to the same graph since that will invalidate this property for other listeners.
Some modifications may result in multiple notifications in some cases.
For example, a bulk notification with notifyAddArray(Graph, Triple[])
,
may, or may not, be accompanied by several notifyAddTriple(Graph, Triple)
notifications, one for each triple. If possible, Graph implementations
should avoid such duplicate notifications and only give the bulk notifications,
see GraphWithPerform
.
When these duplicate notifications occur, each should happen immediately
after the change it signifies is complete. Thus, in the previous example,
if the array has two triples, the pattern is:
- The first triple is added.
notifyAddTriple(Graph, Triple)
for the first triple.- The second triple is added.
notifyAddTriple(Graph, Triple)
for the second triple.notifyAddArray(Graph, Triple[])
for the array.
To track all changes to a graph it is necessary to consider all the methods
in this interface, including notifyEvent(Graph, Object)
.
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Method Summary
Modifier and TypeMethodDescriptionvoid
notifyAddArray
(Graph g, Triple[] triples) Method called when an array of triples has been added to the graph.void
notifyAddGraph
(Graph g, Graph added) Method called when another graphg
has been used to specify the triples added to our attached graph.void
notifyAddIterator
(Graph g, Iterator<Triple> it) Method called when an iterator [of triples] has been added to the graphvoid
notifyAddList
(Graph g, List<Triple> triples) Method called when a list [of triples] has been added to the graph.void
notifyAddTriple
(Graph g, Triple t) Method called when a single triple has been added to the graph.void
notifyDeleteArray
(Graph g, Triple[] triples) Method called when an array of triples has been deleted from the graph.void
notifyDeleteGraph
(Graph g, Graph removed) Method to call when another graph has been used to specify the triples deleted from our attached graph.void
notifyDeleteIterator
(Graph g, Iterator<Triple> it) Method called when an iterator [of triples] has been deleted from the graph.void
notifyDeleteList
(Graph g, List<Triple> L) Method called when a list [of triples] has been deleted from the graph.void
notifyDeleteTriple
(Graph g, Triple t) Method called when a single triple has been deleted from the graph.void
notifyEvent
(Graph source, Object value) method to call for a general event.
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Method Details
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notifyAddTriple
Method called when a single triple has been added to the graph. -
notifyAddArray
Method called when an array of triples has been added to the graph. -
notifyAddList
Method called when a list [of triples] has been added to the graph. -
notifyAddIterator
Method called when an iterator [of triples] has been added to the graph -
notifyAddGraph
Method called when another graphg
has been used to specify the triples added to our attached graph.- Parameters:
g
- the graph of triples added
-
notifyDeleteTriple
Method called when a single triple has been deleted from the graph. -
notifyDeleteList
Method called when a list [of triples] has been deleted from the graph. -
notifyDeleteArray
Method called when an array of triples has been deleted from the graph. -
notifyDeleteIterator
Method called when an iterator [of triples] has been deleted from the graph. -
notifyDeleteGraph
Method to call when another graph has been used to specify the triples deleted from our attached graph.- Parameters:
g
- the graph of triples added
-
notifyEvent
method to call for a general event.value
is usually aGraphEvents
. Special attention is drawn toGraphEvents.removeAll
and events whoseGraphEvents.getTitle()
is"remove"
(seeGraphEvents.remove(Node, Node, Node)
. 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.- Parameters:
value
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