org.graphstream.util

Class GraphListeners

java.lang.Object

org.graphstream.stream.SourceBase

org.graphstream.util.GraphListeners

All Implemented Interfaces:

AttributeSink, ElementSink, Pipe, Sink, Source

public class GraphListeners
extends SourceBase
implements Pipe

Helper object to handle events producted by a graph.

Nested Class Summary

Nested classes/interfaces inherited from class org.graphstream.stream.SourceBase

SourceBase.ElementType

Constructor Summary

Constructors

Constructor and Description
GraphListeners(Graph g)

Method Summary

Methods

Modifier and Type	Method and Description
void	edgeAdded(String sourceId, long timeId, String edgeId, String fromNodeId, String toNodeId, boolean directed) An edge was inserted in graph.
void	edgeAttributeAdded(String sourceId, long timeId, String edgeId, String attribute, Object value) A edge attribute was added.
void	edgeAttributeChanged(String sourceId, long timeId, String edgeId, String attribute, Object oldValue, Object newValue) A edge attribute was changed.
void	edgeAttributeRemoved(String sourceId, long timeId, String edgeId, String attribute) A edge attribute was removed.
void	edgeRemoved(String sourceId, long timeId, String edgeId) An edge of graph was removed.The nodes the edge connects may already have been removed from the graph.
void	graphAttributeAdded(String sourceId, long timeId, String attribute, Object value) A graph attribute was added.
void	graphAttributeChanged(String sourceId, long timeId, String attribute, Object oldValue, Object newValue) A graph attribute was changed.
void	graphAttributeRemoved(String sourceId, long timeId, String attribute) A graph attribute was removed.
void	graphCleared(String sourceId, long timeId) The whole graph was cleared.
long	newEvent()
void	nodeAdded(String sourceId, long timeId, String nodeId) A node was inserted in the given graph.
void	nodeAttributeAdded(String sourceId, long timeId, String nodeId, String attribute, Object value) A node attribute was added.
void	nodeAttributeChanged(String sourceId, long timeId, String nodeId, String attribute, Object oldValue, Object newValue) A node attribute was changed.
void	nodeAttributeRemoved(String sourceId, long timeId, String nodeId, String attribute) A node attribute was removed.
void	nodeRemoved(String sourceId, long timeId, String nodeId) A node was removed from the graph.
void	sendAttributeChangedEvent(String eltId, SourceBase.ElementType eltType, String attribute, AbstractElement.AttributeChangeEvent event, Object oldValue, Object newValue)
void	sendEdgeAdded(String edgeId, String source, String target, boolean directed)
void	sendEdgeRemoved(String edgeId)
void	sendGraphCleared()
void	sendNodeAdded(String nodeId)
void	sendNodeRemoved(String nodeId)
void	sendStepBegins(double step)
void	stepBegins(String sourceId, long timeId, double step) Since dynamic graphs are based on discrete event modifications, the notion of step is defined to simulate elapsed time between events.
String	toString()

Methods inherited from class org.graphstream.stream.SourceBase

addAttributeSink, addElementSink, addSink, attributeSinks, clearAttributeSinks, clearElementSinks, clearSinks, elementSinks, removeAttributeSink, removeElementSink, removeSink, sendAttributeChangedEvent, sendAttributeChangedEvent, sendEdgeAdded, sendEdgeAdded, sendEdgeAttributeAdded, sendEdgeAttributeAdded, sendEdgeAttributeChanged, sendEdgeAttributeChanged, sendEdgeAttributeRemoved, sendEdgeAttributeRemoved, sendEdgeRemoved, sendEdgeRemoved, sendGraphAttributeAdded, sendGraphAttributeAdded, sendGraphAttributeChanged, sendGraphAttributeChanged, sendGraphAttributeRemoved, sendGraphAttributeRemoved, sendGraphCleared, sendGraphCleared, sendNodeAdded, sendNodeAdded, sendNodeAttributeAdded, sendNodeAttributeAdded, sendNodeAttributeChanged, sendNodeAttributeChanged, sendNodeAttributeRemoved, sendNodeAttributeRemoved, sendNodeRemoved, sendNodeRemoved, sendStepBegins, sendStepBegins

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.graphstream.stream.Source

addAttributeSink, addElementSink, addSink, clearAttributeSinks, clearElementSinks, clearSinks, removeAttributeSink, removeElementSink, removeSink

Constructor Detail

GraphListeners

public GraphListeners(Graph g)

Method Detail

newEvent

public long newEvent()

sendAttributeChangedEvent

public void sendAttributeChangedEvent(String eltId,
                             SourceBase.ElementType eltType,
                             String attribute,
                             AbstractElement.AttributeChangeEvent event,
                             Object oldValue,
                             Object newValue)

sendNodeAdded

public void sendNodeAdded(String nodeId)

sendNodeRemoved

public void sendNodeRemoved(String nodeId)

sendEdgeAdded

public void sendEdgeAdded(String edgeId,
                 String source,
                 String target,
                 boolean directed)

sendEdgeRemoved

public void sendEdgeRemoved(String edgeId)

sendGraphCleared

public void sendGraphCleared()

sendStepBegins

public void sendStepBegins(double step)

edgeAttributeAdded

public void edgeAttributeAdded(String sourceId,
                      long timeId,
                      String edgeId,
                      String attribute,
                      Object value)

Description copied from interface: AttributeSink

A edge attribute was added.

Specified by:

edgeAttributeAdded in interface AttributeSink

Parameters:

sourceId - Identifier of the graph where the change occurred.

edgeId - Identifier of the edge whose attribute changed.

attribute - The attribute name.

value - The attribute new value.

edgeAttributeChanged

public void edgeAttributeChanged(String sourceId,
                        long timeId,
                        String edgeId,
                        String attribute,
                        Object oldValue,
                        Object newValue)

Description copied from interface: AttributeSink

A edge attribute was changed.

Specified by:

edgeAttributeChanged in interface AttributeSink

Parameters:

sourceId - Identifier of the graph where the change occurred.

edgeId - Identifier of the edge whose attribute changed.

attribute - The attribute name.

oldValue - The attribute old value.

newValue - The attribute new value.

edgeAttributeRemoved

public void edgeAttributeRemoved(String sourceId,
                        long timeId,
                        String edgeId,
                        String attribute)

Description copied from interface: AttributeSink

A edge attribute was removed.

Specified by:

edgeAttributeRemoved in interface AttributeSink

Parameters:

sourceId - Identifier of the graph where the attribute was removed.

edgeId - Identifier of the edge whose attribute was removed.

attribute - The removed attribute name.

graphAttributeAdded

public void graphAttributeAdded(String sourceId,
                       long timeId,
                       String attribute,
                       Object value)

Description copied from interface: AttributeSink

A graph attribute was added.

Specified by:

graphAttributeAdded in interface AttributeSink

Parameters:

sourceId - Identifier of the graph where the attribute changed.

attribute - The attribute name.

value - The attribute new value.

graphAttributeChanged

public void graphAttributeChanged(String sourceId,
                         long timeId,
                         String attribute,
                         Object oldValue,
                         Object newValue)

Description copied from interface: AttributeSink

A graph attribute was changed.

Specified by:

graphAttributeChanged in interface AttributeSink

Parameters:

sourceId - Identifier of the graph where the attribute changed.

attribute - The attribute name.

oldValue - The attribute old value.

newValue - The attribute new value.

graphAttributeRemoved

public void graphAttributeRemoved(String sourceId,
                         long timeId,
                         String attribute)

Description copied from interface: AttributeSink

A graph attribute was removed.

Specified by:

graphAttributeRemoved in interface AttributeSink

Parameters:

sourceId - Identifier of the graph where the attribute was removed.

attribute - The removed attribute name.

nodeAttributeAdded

public void nodeAttributeAdded(String sourceId,
                      long timeId,
                      String nodeId,
                      String attribute,
                      Object value)

Description copied from interface: AttributeSink

A node attribute was added.

Specified by:

nodeAttributeAdded in interface AttributeSink

Parameters:

sourceId - Identifier of the graph where the change occurred.

nodeId - Identifier of the node whose attribute changed.

attribute - The attribute name.

value - The attribute new value.

nodeAttributeChanged

public void nodeAttributeChanged(String sourceId,
                        long timeId,
                        String nodeId,
                        String attribute,
                        Object oldValue,
                        Object newValue)

Description copied from interface: AttributeSink

A node attribute was changed.

Specified by:

nodeAttributeChanged in interface AttributeSink

Parameters:

sourceId - Identifier of the graph where the change occurred.

nodeId - Identifier of the node whose attribute changed.

attribute - The attribute name.

oldValue - The attribute old value.

newValue - The attribute new value.

nodeAttributeRemoved

public void nodeAttributeRemoved(String sourceId,
                        long timeId,
                        String nodeId,
                        String attribute)

Description copied from interface: AttributeSink

A node attribute was removed.

Specified by:

nodeAttributeRemoved in interface AttributeSink

Parameters:

sourceId - Identifier of the graph where the attribute was removed.

nodeId - Identifier of the node whose attribute was removed.

attribute - The removed attribute name.

edgeAdded

public void edgeAdded(String sourceId,
             long timeId,
             String edgeId,
             String fromNodeId,
             String toNodeId,
             boolean directed)

Description copied from interface: ElementSink

An edge was inserted in graph.

Specified by:

edgeAdded in interface ElementSink

Parameters:

sourceId - Identifier of the graph where the edge was added.

edgeId - Identifier of the added edge.

fromNodeId - Identifier of the first node of the edge.

toNodeId - Identifier of the second node of the edge.

directed - If true, the edge is directed.

edgeRemoved

public void edgeRemoved(String sourceId,
               long timeId,
               String edgeId)

Description copied from interface: ElementSink

An edge of graph was removed.The nodes the edge connects may already have been removed from the graph.

Specified by:

edgeRemoved in interface ElementSink

Parameters:

sourceId - The graph where the edge will be removed.

edgeId - The edge that will be removed.

graphCleared

public void graphCleared(String sourceId,
                long timeId)

Description copied from interface: ElementSink

The whole graph was cleared. All the nodes, edges and attributes of the graph are removed.

Specified by:

graphCleared in interface ElementSink

Parameters:

sourceId - The graph cleared.

nodeAdded

public void nodeAdded(String sourceId,
             long timeId,
             String nodeId)

Description copied from interface: ElementSink

A node was inserted in the given graph.

Specified by:

nodeAdded in interface ElementSink

Parameters:

sourceId - Identifier of the graph where the node was added.

nodeId - Identifier of the added node.

nodeRemoved

public void nodeRemoved(String sourceId,
               long timeId,
               String nodeId)

Description copied from interface: ElementSink

A node was removed from the graph.

Specified by:

nodeRemoved in interface ElementSink

Parameters:

sourceId - Identifier of the graph where the node will be removed.

nodeId - Identifier of the removed node.

stepBegins

public void stepBegins(String sourceId,
              long timeId,
              double step)

Description copied from interface: ElementSink

Since dynamic graphs are based on discrete event modifications, the notion of step is defined to simulate elapsed time between events. So a step is a event that occurs in the graph, it does not modify it but it gives a kind of timestamp that allow the tracking of the progress of the graph over the time.

This kind of event is useful for dynamic algorithms that listen to the dynamic graph and need to measure the time in the graph's evolution.

Specified by:

stepBegins in interface ElementSink

Parameters:

sourceId - Identifier of the graph where the step starts.

timeId - A numerical value that may give a timestamp to track the evolution of the graph over the time.

toString

public String toString()

Overrides:

toString in class Object