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The GraphStream library. With GraphStream you deal with
graphs. Static and Dynamic. You create them from scratch, from a file
or any source. You display and render them. This is the core package
that contains the minimal needed to read and write a graph.
/*
* Copyright 2006 - 2015
* Stefan Balev
* Julien Baudry
* Antoine Dutot
* Yoann Pigné
* Guilhelm Savin
*
* This file is part of GraphStream .
*
* GraphStream is a library whose purpose is to handle static or dynamic
* graph, create them from scratch, file or any source and display them.
*
* This program is free software distributed under the terms of two licenses, the
* CeCILL-C license that fits European law, and the GNU Lesser General Public
* License. You can use, modify and/ or redistribute the software under the terms
* of the CeCILL-C license as circulated by CEA, CNRS and INRIA at the following
* URL or under the terms of the GNU LGPL as published by
* the Free Software Foundation, either version 3 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
* PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see events;
/**
* Create a new empty diff.
*/
public GraphDiff() {
this.events = new LinkedList();
this.bridge = null;
}
/**
* Create a diff between two graphs.
*
* @param g1
* @param g2
*/
public GraphDiff(Graph g1, Graph g2) {
this();
if (g2.getNodeCount() == 0 && g2.getEdgeCount() == 0
&& g2.getAttributeCount() == 0
&& (g1.getNodeCount() > 0 || g1.getEdgeCount() > 0)) {
events.add(new GraphCleared(g1));
} else {
for (int idx = 0; idx < g2.getNodeCount(); idx++) {
Node n2 = g2.getNode(idx);
Node n1 = g1.getNode(n2.getId());
if (n1 == null)
events.add(new NodeAdded(n2.getId()));
attributeDiff(ElementType.NODE, n1, n2);
}
for (int idx = 0; idx < g1.getNodeCount(); idx++) {
Node n1 = g1.getNode(idx);
Node n2 = g2.getNode(n1.getId());
if (n2 == null) {
attributeDiff(ElementType.NODE, n1, n2);
events.add(new NodeRemoved(n1.getId()));
}
}
for (int idx = 0; idx < g2.getEdgeCount(); idx++) {
Edge e2 = g2.getEdge(idx);
Edge e1 = g1.getEdge(e2.getId());
if (e1 == null)
events.add(new EdgeAdded(e2.getId(), e2.getSourceNode()
.getId(), e2.getTargetNode().getId(), e2
.isDirected()));
attributeDiff(ElementType.EDGE, e1, e2);
}
for (int idx = 0; idx < g1.getEdgeCount(); idx++) {
Edge e1 = g1.getEdge(idx);
Edge e2 = g2.getEdge(e1.getId());
if (e2 == null) {
attributeDiff(ElementType.EDGE, e1, e2);
events.add(new EdgeRemoved(e1.getId(), e1.getSourceNode()
.getId(), e1.getTargetNode().getId(), e1
.isDirected()));
}
}
attributeDiff(ElementType.GRAPH, g1, g2);
}
}
/**
* Start to record changes. If a record is already started, then it will be
* ended.
*
* @param g
* the graph to start listening for changes.
*/
public void start(Graph g) {
if (bridge != null)
end();
bridge = new Bridge(g);
}
/**
* Stop to record changes. If there is no record, calling this method has no
* effect.
*/
public void end() {
if (bridge != null) {
bridge.end();
bridge = null;
}
}
/**
* Clear all recorded changes.
*/
public void reset() {
events.clear();
}
/**
* Considering this object is a diff between g1 and g2, calling this method
* will applied changes on g1 such that g1 will look like g2.
*
* @param g1
*/
public void apply(Sink g1) {
String sourceId = String.format("GraphDiff@%x", System.nanoTime());
apply(sourceId, g1);
}
public void apply(String sourceId, Sink g1) {
for (int i = 0; i < events.size(); i++)
events.get(i).apply(sourceId, i, g1);
}
/**
* Considering this object is a diff between g1 and g2, calling this method
* will applied changes on g2 such that g2 will look like g1.
*
* @param g2
*/
public void reverse(Sink g2) {
String sourceId = String.format("GraphDiff@%x", System.nanoTime());
reverse(sourceId, g2);
}
public void reverse(String sourceId, Sink g2) {
for (int i = events.size() - 1; i >= 0; i--)
events.get(i).reverse(sourceId, events.size() + 1 - i, g2);
}
private void attributeDiff(ElementType type, Element e1, Element e2) {
if (e1 == null && e2 == null)
return;
else if (e1 == null) {
for (String key : e2.getAttributeKeySet())
events.add(new AttributeAdded(type, e2.getId(), key, e2
.getAttribute(key)));
} else if (e2 == null) {
for (String key : e1.getAttributeKeySet())
events.add(new AttributeRemoved(type, e1.getId(), key, e1
.getAttribute(key)));
} else {
for (String key : e2.getAttributeKeySet()) {
if (e1.hasAttribute(key)) {
Object o1 = e1.getAttribute(key);
Object o2 = e2.getAttribute(key);
if (!(o1 == null ? o2 == null : o1.equals(o2)))
events.add(new AttributeChanged(type, e1.getId(), key,
o2, o1));
} else
events.add(new AttributeAdded(type, e1.getId(), key, e2
.getAttribute(key)));
}
for (String key : e1.getAttributeKeySet()) {
if (!e2.hasAttribute(key))
events.add(new AttributeRemoved(type, e1.getId(), key, e1
.getAttribute(key)));
}
}
}
/*
* (non-Javadoc)
*
* @see java.lang.Object#toString()
*/
@Override
public String toString() {
StringBuilder buffer = new StringBuilder();
for (int i = 0; i < events.size(); i++)
buffer.append(events.get(i).toString()).append("\n");
return buffer.toString();
}
protected abstract class Event {
/**
* Apply this event on a given graph.
*
* @param g
* the graph on which the action should be applied
*/
abstract void apply(String sourceId, long timeId, Sink g);
/**
* Apply the dual event on a given graph.
*
* @param g
* the graph on which the dual action should be applied.
*/
abstract void reverse(String sourceId, long timeId, Sink g);
}
protected class NodeAdded extends Event {
String nodeId;
public NodeAdded(String nodeId) {
this.nodeId = nodeId;
}
/*
* (non-Javadoc)
*
* @see
* org.graphstream.util.GraphDiff.Event#apply(org.graphstream.graph.
* Graph)
*/
public void apply(String sourceId, long timeId, Sink g) {
g.nodeAdded(sourceId, timeId, nodeId);
}
/*
* (non-Javadoc)
*
* @see
* org.graphstream.util.GraphDiff.Event#reverse(org.graphstream.graph
* .Graph)
*/
public void reverse(String sourceId, long timeId, Sink g) {
g.nodeRemoved(sourceId, timeId, nodeId);
}
/*
* (non-Javadoc)
*
* @see java.lang.Object#toString()
*/
@Override
public String toString() {
return String.format("an \"%s\"", nodeId);
}
}
protected class NodeRemoved extends NodeAdded {
public NodeRemoved(String nodeId) {
super(nodeId);
}
/*
* (non-Javadoc)
*
* @see
* org.graphstream.util.GraphDiff.NodeAdded#apply(org.graphstream.graph
* .Graph)
*/
public void apply(String sourceId, long timeId, Sink g) {
super.reverse(sourceId, timeId, g);
}
/*
* (non-Javadoc)
*
* @see
* org.graphstream.util.GraphDiff.NodeAdded#reverse(org.graphstream.
* graph.Graph)
*/
public void reverse(String sourceId, long timeId, Sink g) {
super.apply(sourceId, timeId, g);
}
/*
* (non-Javadoc)
*
* @see org.graphstream.util.GraphDiff.NodeAdded#toString()
*/
@Override
public String toString() {
return String.format("dn \"%s\"", nodeId);
}
}
protected abstract class ElementEvent extends Event {
ElementType type;
String elementId;
protected ElementEvent(ElementType type, String elementId) {
this.type = type;
this.elementId = elementId;
}
protected Element getElement(Graph g) {
Element e;
switch (type) {
case NODE:
e = g.getNode(elementId);
break;
case EDGE:
e = g.getEdge(elementId);
break;
case GRAPH:
e = g;
break;
default:
e = null;
}
if (e == null)
throw new ElementNotFoundException();
return e;
}
protected String toStringHeader() {
String header;
switch (type) {
case NODE:
header = "cn";
break;
case EDGE:
header = "ce";
break;
case GRAPH:
header = "cg";
break;
default:
header = "??";
break;
}
return String.format("%s \"%s\"", header, elementId);
}
protected String toStringValue(Object o) {
if (o == null)
return "null";
else if (o instanceof String)
return "\"" + o.toString() + "\"";
else if (o instanceof Number)
return o.toString();
else
return o.toString();
}
}
protected class AttributeAdded extends ElementEvent {
String attrId;
Object value;
public AttributeAdded(ElementType type, String elementId,
String attrId, Object value) {
super(type, elementId);
this.attrId = attrId;
this.value = value;
if (value != null && value.getClass().isArray()
&& Array.getLength(value) > 0) {
Object o = Array.newInstance(Array.get(value, 0).getClass(),
Array.getLength(value));
for (int i = 0; i < Array.getLength(value); i++)
Array.set(o, i, Array.get(value, i));
this.value = o;
}
}
/*
* (non-Javadoc)
*
* @see
* org.graphstream.util.GraphDiff.Event#apply(org.graphstream.graph.
* Graph)
*/
public void apply(String sourceId, long timeId, Sink g) {
switch (type) {
case NODE:
g.nodeAttributeAdded(sourceId, timeId, elementId, attrId, value);
break;
case EDGE:
g.edgeAttributeAdded(sourceId, timeId, elementId, attrId, value);
break;
case GRAPH:
g.graphAttributeAdded(sourceId, timeId, attrId, value);
break;
}
}
/*
* (non-Javadoc)
*
* @see
* org.graphstream.util.GraphDiff.Event#reverse(org.graphstream.graph
* .Graph)
*/
public void reverse(String sourceId, long timeId, Sink g) {
switch (type) {
case NODE:
g.nodeAttributeRemoved(sourceId, timeId, elementId, attrId);
break;
case EDGE:
g.edgeAttributeRemoved(sourceId, timeId, elementId, attrId);
break;
case GRAPH:
g.graphAttributeRemoved(sourceId, timeId, attrId);
break;
}
}
/*
* (non-Javadoc)
*
* @see java.lang.Object#toString()
*/
@Override
public String toString() {
return String.format("%s +\"%s\":%s", toStringHeader(), attrId,
toStringValue(value));
}
}
protected class AttributeChanged extends ElementEvent {
String attrId;
Object newValue;
Object oldValue;
public AttributeChanged(ElementType type, String elementId,
String attrId, Object newValue, Object oldValue) {
super(type, elementId);
this.attrId = attrId;
this.newValue = newValue;
this.oldValue = oldValue;
if (newValue != null && newValue.getClass().isArray()
&& Array.getLength(newValue) > 0) {
Object o = Array.newInstance(Array.get(newValue, 0).getClass(),
Array.getLength(newValue));
for (int i = 0; i < Array.getLength(newValue); i++)
Array.set(o, i, Array.get(newValue, i));
this.newValue = o;
}
if (oldValue != null && oldValue.getClass().isArray()
&& Array.getLength(oldValue) > 0) {
Object o = Array.newInstance(Array.get(oldValue, 0).getClass(),
Array.getLength(oldValue));
for (int i = 0; i < Array.getLength(oldValue); i++)
Array.set(o, i, Array.get(oldValue, i));
this.oldValue = o;
}
}
/*
* (non-Javadoc)
*
* @see
* org.graphstream.util.GraphDiff.Event#apply(org.graphstream.graph.
* Graph)
*/
public void apply(String sourceId, long timeId, Sink g) {
switch (type) {
case NODE:
g.nodeAttributeChanged(sourceId, timeId, elementId, attrId,
oldValue, newValue);
break;
case EDGE:
g.edgeAttributeChanged(sourceId, timeId, elementId, attrId,
oldValue, newValue);
break;
case GRAPH:
g.graphAttributeChanged(sourceId, timeId, attrId, oldValue,
newValue);
break;
}
}
/*
* (non-Javadoc)
*
* @see
* org.graphstream.util.GraphDiff.Event#reverse(org.graphstream.graph
* .Graph)
*/
public void reverse(String sourceId, long timeId, Sink g) {
switch (type) {
case NODE:
g.nodeAttributeChanged(sourceId, timeId, elementId, attrId,
newValue, oldValue);
break;
case EDGE:
g.edgeAttributeChanged(sourceId, timeId, elementId, attrId,
newValue, oldValue);
break;
case GRAPH:
g.graphAttributeChanged(sourceId, timeId, attrId, newValue,
oldValue);
break;
}
}
/*
* (non-Javadoc)
*
* @see java.lang.Object#toString()
*/
@Override
public String toString() {
return String.format("%s \"%s\":%s", toStringHeader(), attrId,
toStringValue(newValue));
}
}
protected class AttributeRemoved extends ElementEvent {
String attrId;
Object oldValue;
public AttributeRemoved(ElementType type, String elementId,
String attrId, Object oldValue) {
super(type, elementId);
this.attrId = attrId;
this.oldValue = oldValue;
}
/*
* (non-Javadoc)
*
* @see
* org.graphstream.util.GraphDiff.Event#apply(org.graphstream.graph.
* Graph)
*/
public void apply(String sourceId, long timeId, Sink g) {
switch (type) {
case NODE:
g.nodeAttributeRemoved(sourceId, timeId, elementId, attrId);
break;
case EDGE:
g.edgeAttributeRemoved(sourceId, timeId, elementId, attrId);
break;
case GRAPH:
g.graphAttributeRemoved(sourceId, timeId, attrId);
break;
}
}
/*
* (non-Javadoc)
*
* @see
* org.graphstream.util.GraphDiff.Event#reverse(org.graphstream.graph
* .Graph)
*/
public void reverse(String sourceId, long timeId, Sink g) {
switch (type) {
case NODE:
g.nodeAttributeAdded(sourceId, timeId, elementId, attrId,
oldValue);
break;
case EDGE:
g.edgeAttributeAdded(sourceId, timeId, elementId, attrId,
oldValue);
break;
case GRAPH:
g.graphAttributeAdded(sourceId, timeId, attrId, oldValue);
break;
}
}
/*
* (non-Javadoc)
*
* @see java.lang.Object#toString()
*/
@Override
public String toString() {
return String.format("%s -\"%s\":%s", toStringHeader(), attrId,
toStringValue(oldValue));
}
}
protected class EdgeAdded extends Event {
String edgeId;
String source, target;
boolean directed;
public EdgeAdded(String edgeId, String source, String target,
boolean directed) {
this.edgeId = edgeId;
this.source = source;
this.target = target;
this.directed = directed;
}
/*
* (non-Javadoc)
*
* @see
* org.graphstream.util.GraphDiff.Event#apply(org.graphstream.graph.
* Graph)
*/
public void apply(String sourceId, long timeId, Sink g) {
g.edgeAdded(sourceId, timeId, edgeId, source, target, directed);
}
/*
* (non-Javadoc)
*
* @see
* org.graphstream.util.GraphDiff.Event#reverse(org.graphstream.graph
* .Graph)
*/
public void reverse(String sourceId, long timeId, Sink g) {
g.edgeRemoved(sourceId, timeId, edgeId);
}
/*
* (non-Javadoc)
*
* @see java.lang.Object#toString()
*/
@Override
public String toString() {
return String.format("ae \"%s\" \"%s\" %s \"%s\"", edgeId, source,
directed ? ">" : "--", target);
}
}
protected class EdgeRemoved extends EdgeAdded {
public EdgeRemoved(String edgeId, String source, String target,
boolean directed) {
super(edgeId, source, target, directed);
}
/*
* (non-Javadoc)
*
* @see
* org.graphstream.util.GraphDiff.EdgeAdded#apply(org.graphstream.graph
* .Graph)
*/
public void apply(String sourceId, long timeId, Sink g) {
super.reverse(sourceId, timeId, g);
}
/*
* (non-Javadoc)
*
* @see
* org.graphstream.util.GraphDiff.EdgeAdded#reverse(org.graphstream.
* graph.Graph)
*/
public void reverse(String sourceId, long timeId, Sink g) {
super.apply(sourceId, timeId, g);
}
/*
* (non-Javadoc)
*
* @see org.graphstream.util.GraphDiff.EdgeAdded#toString()
*/
@Override
public String toString() {
return String.format("de \"%s\"", edgeId);
}
}
protected class StepBegins extends Event {
double newStep, oldStep;
public StepBegins(double oldStep, double newStep) {
this.newStep = newStep;
this.oldStep = oldStep;
}
/*
* (non-Javadoc)
*
* @see
* org.graphstream.util.GraphDiff.Event#apply(org.graphstream.graph.
* Graph)
*/
public void apply(String sourceId, long timeId, Sink g) {
g.stepBegins(sourceId, timeId, newStep);
}
/*
* (non-Javadoc)
*
* @see
* org.graphstream.util.GraphDiff.Event#reverse(org.graphstream.graph
* .Graph)
*/
public void reverse(String sourceId, long timeId, Sink g) {
g.stepBegins(sourceId, timeId, oldStep);
}
@Override
public String toString() {
return String.format("st %f", newStep);
}
}
protected class GraphCleared extends Event {
byte[] data;
public GraphCleared(Graph g) {
this.data = null;
try {
FileSinkDGS sink = new FileSinkDGS();
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
GZIPOutputStream out = new GZIPOutputStream(bytes);
sink.writeAll(g, out);
out.flush();
out.close();
this.data = bytes.toByteArray();
} catch (IOException e) {
e.printStackTrace();
}
}
/*
* (non-Javadoc)
*
* @see
* org.graphstream.util.GraphDiff.Event#apply(org.graphstream.graph.
* Graph)
*/
public void apply(String sourceId, long timeId, Sink g) {
g.graphCleared(sourceId, timeId);
}
/*
* (non-Javadoc)
*
* @see
* org.graphstream.util.GraphDiff.Event#reverse(org.graphstream.graph
* .Graph)
*/
public void reverse(String sourceId, long timeId, Sink g) {
try {
ByteArrayInputStream bytes = new ByteArrayInputStream(this.data);
GZIPInputStream in = new GZIPInputStream(bytes);
FileSourceDGS dgs = new FileSourceDGS();
dgs.addSink(g);
dgs.readAll(in);
dgs.removeSink(g);
in.close();
} catch (IOException e) {
e.printStackTrace();
}
}
/*
* (non-Javadoc)
*
* @see java.lang.Object#toString()
*/
@Override
public String toString() {
return "cl";
}
}
private class Bridge implements Sink {
Graph g;
Bridge(Graph g) {
this.g = g;
g.addSink(this);
}
void end() {
g.removeSink(this);
}
/*
* (non-Javadoc)
*
* @see
* org.graphstream.stream.AttributeSink#graphAttributeAdded(java.lang
* .String, long, java.lang.String, java.lang.Object)
*/
public void graphAttributeAdded(String sourceId, long timeId,
String attribute, Object value) {
Event e;
e = new AttributeAdded(ElementType.GRAPH, null, attribute, value);
events.add(e);
}
/*
* (non-Javadoc)
*
* @see
* org.graphstream.stream.AttributeSink#graphAttributeChanged(java.lang
* .String, long, java.lang.String, java.lang.Object, java.lang.Object)
*/
public void graphAttributeChanged(String sourceId, long timeId,
String attribute, Object oldValue, Object newValue) {
Event e;
e = new AttributeChanged(ElementType.GRAPH, null, attribute,
newValue, g.getAttribute(attribute));
events.add(e);
}
/*
* (non-Javadoc)
*
* @see
* org.graphstream.stream.AttributeSink#graphAttributeRemoved(java.lang
* .String, long, java.lang.String)
*/
public void graphAttributeRemoved(String sourceId, long timeId,
String attribute) {
Event e;
e = new AttributeRemoved(ElementType.GRAPH, null, attribute,
g.getAttribute(attribute));
events.add(e);
}
/*
* (non-Javadoc)
*
* @see
* org.graphstream.stream.AttributeSink#nodeAttributeAdded(java.lang
* .String, long, java.lang.String, java.lang.String, java.lang.Object)
*/
public void nodeAttributeAdded(String sourceId, long timeId,
String nodeId, String attribute, Object value) {
Event e;
e = new AttributeAdded(ElementType.NODE, nodeId, attribute, value);
events.add(e);
}
/*
* (non-Javadoc)
*
* @see
* org.graphstream.stream.AttributeSink#nodeAttributeChanged(java.lang
* .String, long, java.lang.String, java.lang.String, java.lang.Object,
* java.lang.Object)
*/
public void nodeAttributeChanged(String sourceId, long timeId,
String nodeId, String attribute, Object oldValue,
Object newValue) {
Event e;
e = new AttributeChanged(ElementType.NODE, nodeId, attribute,
newValue, g.getNode(nodeId).getAttribute(attribute));
events.add(e);
}
/*
* (non-Javadoc)
*
* @see
* org.graphstream.stream.AttributeSink#nodeAttributeRemoved(java.lang
* .String, long, java.lang.String, java.lang.String)
*/
public void nodeAttributeRemoved(String sourceId, long timeId,
String nodeId, String attribute) {
Event e;
e = new AttributeRemoved(ElementType.NODE, nodeId, attribute, g
.getNode(nodeId).getAttribute(attribute));
events.add(e);
}
/*
* (non-Javadoc)
*
* @see
* org.graphstream.stream.AttributeSink#edgeAttributeAdded(java.lang
* .String, long, java.lang.String, java.lang.String, java.lang.Object)
*/
public void edgeAttributeAdded(String sourceId, long timeId,
String edgeId, String attribute, Object value) {
Event e;
e = new AttributeAdded(ElementType.EDGE, edgeId, attribute, value);
events.add(e);
}
/*
* (non-Javadoc)
*
* @see
* org.graphstream.stream.AttributeSink#edgeAttributeChanged(java.lang
* .String, long, java.lang.String, java.lang.String, java.lang.Object,
* java.lang.Object)
*/
public void edgeAttributeChanged(String sourceId, long timeId,
String edgeId, String attribute, Object oldValue,
Object newValue) {
Event e;
e = new AttributeChanged(ElementType.EDGE, edgeId, attribute,
newValue, g.getEdge(edgeId).getAttribute(attribute));
events.add(e);
}
/*
* (non-Javadoc)
*
* @see
* org.graphstream.stream.AttributeSink#edgeAttributeRemoved(java.lang
* .String, long, java.lang.String, java.lang.String)
*/
public void edgeAttributeRemoved(String sourceId, long timeId,
String edgeId, String attribute) {
Event e;
e = new AttributeRemoved(ElementType.EDGE, edgeId, attribute, g
.getEdge(edgeId).getAttribute(attribute));
events.add(e);
}
/*
* (non-Javadoc)
*
* @see org.graphstream.stream.ElementSink#nodeAdded(java.lang.String,
* long, java.lang.String)
*/
public void nodeAdded(String sourceId, long timeId, String nodeId) {
Event e;
e = new NodeAdded(nodeId);
events.add(e);
}
/*
* (non-Javadoc)
*
* @see org.graphstream.stream.ElementSink#nodeRemoved(java.lang.String,
* long, java.lang.String)
*/
public void nodeRemoved(String sourceId, long timeId, String nodeId) {
Node n = g.getNode(nodeId);
for (String key : n.getAttributeKeySet())
nodeAttributeRemoved(sourceId, timeId, nodeId, key);
Event e;
e = new NodeRemoved(nodeId);
events.add(e);
}
/*
* (non-Javadoc)
*
* @see org.graphstream.stream.ElementSink#edgeAdded(java.lang.String,
* long, java.lang.String, java.lang.String, java.lang.String, boolean)
*/
public void edgeAdded(String sourceId, long timeId, String edgeId,
String fromNodeId, String toNodeId, boolean directed) {
Event e;
e = new EdgeAdded(edgeId, fromNodeId, toNodeId, directed);
events.add(e);
}
/*
* (non-Javadoc)
*
* @see org.graphstream.stream.ElementSink#edgeRemoved(java.lang.String,
* long, java.lang.String)
*/
public void edgeRemoved(String sourceId, long timeId, String edgeId) {
Edge edge = g.getEdge(edgeId);
for (String key : edge.getAttributeKeySet())
edgeAttributeRemoved(sourceId, timeId, edgeId, key);
Event e;
e = new EdgeRemoved(edgeId, edge.getSourceNode().getId(), edge
.getTargetNode().getId(), edge.isDirected());
events.add(e);
}
/*
* (non-Javadoc)
*
* @see
* org.graphstream.stream.ElementSink#graphCleared(java.lang.String,
* long)
*/
public void graphCleared(String sourceId, long timeId) {
Event e = new GraphCleared(g);
events.add(e);
}
/*
* (non-Javadoc)
*
* @see org.graphstream.stream.ElementSink#stepBegins(java.lang.String,
* long, double)
*/
public void stepBegins(String sourceId, long timeId, double step) {
Event e = new StepBegins(g.getStep(), step);
events.add(e);
}
}
public static void main(String... args) throws Exception {
Graph g1 = new AdjacencyListGraph("g1");
Graph g2 = new AdjacencyListGraph("g2");
Node a1 = g1.addNode("A");
a1.addAttribute("attr1", "test");
a1.addAttribute("attr2", 10.0);
a1.addAttribute("attr3", 12);
Node a2 = g2.addNode("A");
a2.addAttribute("attr1", "test1");
a2.addAttribute("attr2", 10.0);
g2.addNode("B");
g2.addNode("C");
GraphDiff diff = new GraphDiff(g2, g1);
System.out.println(diff);
}
}