private void writeGraph(XMLStreamWriter xmlWriter, HierarchicalGraph graph) throws Exception {
xmlWriter.writeStartElement(GRAPH);
xmlWriter.writeAttribute(
GRAPH_DEFAULT_EDGETYPE,
graph instanceof DirectedGraph
? "directed"
: graph instanceof UndirectedGraph ? "undirected" : "mixed");
if (exportDynamic) {
if (!Double.isInfinite(visibleInterval.getLow())) {
String intervalLow = formatTime(visibleInterval.getLow());
xmlWriter.writeAttribute(GRAPH_START, intervalLow);
}
if (!Double.isInfinite(visibleInterval.getHigh())) {
String intervalHigh = formatTime(visibleInterval.getHigh());
xmlWriter.writeAttribute(GRAPH_END, intervalHigh);
}
String timeFormat =
dynamicModel.getTimeFormat().equals(DynamicModel.TimeFormat.DATE) ? "date" : "double";
xmlWriter.writeAttribute(GRAPH_TIMEFORMAT, timeFormat);
}
xmlWriter.writeAttribute(GRAPH_MODE, exportDynamic ? "dynamic" : "static");
writeAttributes(xmlWriter, attributeModel.getNodeTable());
writeAttributes(xmlWriter, attributeModel.getEdgeTable());
writeNodes(xmlWriter, graph);
writeEdges(xmlWriter, graph);
xmlWriter.writeEndElement();
}
private String formatTime(double time) {
if (dynamicModel.getTimeFormat().equals(DynamicModel.TimeFormat.DATE)) {
String t = DynamicUtilities.getXMLDateStringFromDouble(time);
if (t.endsWith("T00:00:00.000")) {
t = t.substring(0, t.length() - 13);
}
return t;
} else {
return Double.toString(time);
}
}
public boolean execute() {
attributeModel = workspace.getLookup().lookup(AttributeModel.class);
graphModel = workspace.getLookup().lookup(GraphModel.class);
HierarchicalGraph graph = null;
if (exportVisible) {
graph = graphModel.getHierarchicalGraphVisible();
} else {
graph = graphModel.getHierarchicalGraph();
}
Progress.start(progress);
graph.readLock();
// Options
if (normalize) {
calculateMinMax(graph);
}
// Calculate progress units count
int max = 0;
if (exportHierarchy) {
for (Node n : graph.getNodesTree()) {
max++;
}
for (Edge e : graph.getEdgesTree()) {
max++;
}
} else {
max = graph.getNodeCount();
for (Edge e : graph.getEdgesAndMetaEdges()) {
max++;
}
}
Progress.switchToDeterminate(progress, max);
try {
XMLOutputFactory outputFactory = XMLOutputFactory.newInstance();
outputFactory.setProperty("javax.xml.stream.isRepairingNamespaces", Boolean.FALSE);
XMLStreamWriter xmlWriter = outputFactory.createXMLStreamWriter(writer);
xmlWriter = new IndentingXMLStreamWriter(xmlWriter);
xmlWriter.writeStartDocument("UTF-8", "1.0");
xmlWriter.setPrefix("", GEXF_NAMESPACE);
xmlWriter.writeStartElement(GEXF_NAMESPACE, GEXF);
xmlWriter.writeNamespace("", GEXF_NAMESPACE);
xmlWriter.writeAttribute(GEXF_VERSION, "1.1");
if (exportColors || exportPosition || exportSize) {
xmlWriter.writeNamespace(VIZ, VIZ_NAMESPACE);
}
xmlWriter.writeAttribute("xmlns:xsi", "http://www.w3.org/2001/XMLSchema-instance");
xmlWriter.writeAttribute("xsi:schemaLocation", GEXF_NAMESPACE_LOCATION);
if (exportDynamic) {
DynamicController dynamicController = Lookup.getDefault().lookup(DynamicController.class);
dynamicModel = dynamicController != null ? dynamicController.getModel(workspace) : null;
visibleInterval =
dynamicModel == null
? null
: exportVisible
? dynamicModel.getVisibleInterval()
: new TimeInterval(Double.NEGATIVE_INFINITY, Double.POSITIVE_INFINITY);
}
writeMeta(xmlWriter);
writeGraph(xmlWriter, graph);
xmlWriter.writeEndElement();
xmlWriter.writeEndDocument();
xmlWriter.close();
} catch (Exception e) {
graph.readUnlockAll();
if (e instanceof RuntimeException) {
throw (RuntimeException) e;
}
throw new RuntimeException(e);
}
graph.readUnlock();
Progress.finish(progress);
return !cancel;
}