/*
Copyright 2008-2011 Gephi
Authors : Taras Klaskovsky <megaterik@gmail.com>
Website : http://www.gephi.org
This file is part of Gephi.
DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
Copyright 2011 Gephi Consortium. All rights reserved.
The contents of this file are subject to the terms of either the GNU
General Public License Version 3 only ("GPL") or the Common
Development and Distribution License("CDDL") (collectively, the
"License"). You may not use this file except in compliance with the
License. You can obtain a copy of the License at
http://gephi.org/about/legal/license-notice/
or /cddl-1.0.txt and /gpl-3.0.txt. See the License for the
specific language governing permissions and limitations under the
License. When distributing the software, include this License Header
Notice in each file and include the License files at
/cddl-1.0.txt and /gpl-3.0.txt. If applicable, add the following below the
License Header, with the fields enclosed by brackets [] replaced by
your own identifying information:
"Portions Copyrighted [year] [name of copyright owner]"
If you wish your version of this file to be governed by only the CDDL
or only the GPL Version 3, indicate your decision by adding
"[Contributor] elects to include this software in this distribution
under the [CDDL or GPL Version 3] license." If you do not indicate a
single choice of license, a recipient has the option to distribute
your version of this file under either the CDDL, the GPL Version 3 or
to extend the choice of license to its licensees as provided above.
However, if you add GPL Version 3 code and therefore, elected the GPL
Version 3 license, then the option applies only if the new code is
made subject to such option by the copyright holder.
Contributor(s):
Portions Copyrighted 2011 Gephi Consortium.
*/
package org.gephi.io.exporter.plugin;
import java.io.IOException;
import java.io.Writer;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.gephi.graph.api.Column;
import org.gephi.graph.api.Edge;
import org.gephi.graph.api.EdgeIterable;
import org.gephi.graph.api.Graph;
import org.gephi.graph.api.GraphModel;
import org.gephi.graph.api.Node;
import org.gephi.graph.api.NodeIterable;
import org.gephi.io.exporter.spi.CharacterExporter;
import org.gephi.io.exporter.spi.GraphExporter;
import org.gephi.project.api.Workspace;
import org.gephi.utils.longtask.spi.LongTask;
import org.gephi.utils.progress.Progress;
import org.gephi.utils.progress.ProgressTicket;
/**
*
* @author megaterik
*/
public class ExporterVNA implements GraphExporter, CharacterExporter, LongTask {
private boolean exportVisible;
private Workspace workspace;
private boolean cancel = false;
private ProgressTicket progressTicket;
//settings
private boolean exportEdgeWeight = true;
private boolean exportCoords = true;
private boolean exportSize = true;
private boolean exportShortLabel = true;
private boolean exportColor = true;
private boolean exportDynamicWeight = true;
private boolean exportAttributes = true;
private boolean normalize = false;
private Writer writer;
//normalization
private double minX;
private double maxX;
private double minY;
private double maxY;
private double minSize;
private double maxSize;
private double getLow;//borders for dynamic edge weight
private double getHigh;
@Override
public void setExportVisible(boolean exportVisible) {
this.exportVisible = exportVisible;
}
@Override
public boolean isExportVisible() {
return exportVisible;
}
@Override
public boolean execute() {
GraphModel graphModel = workspace.getLookup().lookup(GraphModel.class);
Graph graph = exportVisible ? graphModel.getGraphVisible() : graphModel.getGraph();
graph.readLock();
//nodes are counted twice, because they are printed in exportNodeData and exportNodeProperties
Progress.start(progressTicket, graph.getNodeCount() * 2 + graph.getEdgeCount());
try {
exportData(graph);
} catch (Exception e) {
Logger.getLogger(ExporterVNA.class.getName()).log(Level.SEVERE, null, e);
} finally {
graph.readUnlock();
Progress.finish(progressTicket);
}
return !cancel;
}
private void exportData(Graph graph) throws IOException {
if (normalize) {
calculateMinMaxForNormalization(graph);
}
if (exportAttributes && atLeastOneNonStandartAttribute(graph.getModel())) {
exportNodeData(graph);
}
exportNodeProperties(graph);
exportEdgeData(graph);
Progress.finish(progressTicket);
}
/*
* For non-standart and string attributes
*/
private String printParameter(Object val) {
if (val == null) {
return valueForEmptyAttributes;
}
String res = val.toString().replaceAll("\\r\\n|\\r|\\n", " ").replace('\"', ' ');
if (res.contains(" ")) {
return "\"" + res + "\"";
} else {
return res;
}
}
private boolean atLeastOneNonStandartAttribute(GraphModel graphModel) {
for (Column col : graphModel.getNodeTable()) {
if (!col.isProperty()) {
return true;
}
}
return false;
}
/*
* prints node data in format "id (attributes)*
*/
private void exportNodeData(Graph graph) throws IOException {
//header
writer.append("*Node data\n");
writer.append("ID");
for (Column column : graph.getModel().getNodeTable()) {
if (!column.isProperty()) {
writer.append(" ").append(column.getTitle().replace(' ', '_'));
//replace spaces because importer can't read attributes titles in quotes
}
}
writer.append("\n");
//body
NodeIterable nodeIterable = graph.getNodes();
for (Node node : nodeIterable) {
writer.append(printParameter(node.getId()));
for (Column column : node.getAttributeColumns()) {
if (!column.isProperty()) {
Object value = node.getAttribute(column, graph.getView());
if (value != null) {
writer.append(" ").append(printParameter(value));
} else {
writer.append(" ").append(valueForEmptyAttributes);
}
}
}
writer.append("\n");
Progress.progress(progressTicket);
if (cancel) {
nodeIterable.doBreak();
return;
}
}
}
static final String valueForEmptyAttributes = "\"\"";
private void calculateMinMaxForNormalization(Graph graph) {
minX = Double.POSITIVE_INFINITY;
maxX = Double.NEGATIVE_INFINITY;
minY = Double.POSITIVE_INFINITY;
maxY = Double.NEGATIVE_INFINITY;
minSize = Double.POSITIVE_INFINITY;
maxSize = Double.NEGATIVE_INFINITY;
NodeIterable nodeIterable = graph.getNodes();
for (Node node : nodeIterable) {
if (cancel) {
nodeIterable.doBreak();
break;
}
minX = Math.min(minX, node.x());
maxX = Math.max(maxX, node.x());
minY = Math.min(minY, node.y());
maxY = Math.max(maxY, node.y());
minSize = Math.min(minSize, node.r());
maxSize = Math.max(maxSize, node.r());
}
}
/*
* prints node properties as "id (x)? (y)? (size)? (color)? (shortlabel)?"
*/
private void exportNodeProperties(Graph graph) throws IOException {
//header
writer.append("*Node properties\n");
writer.append("ID");
if (exportCoords) {
writer.append(" x y");
}
if (exportSize) {
writer.append(" size");
}
if (exportColor) {
writer.append(" color");
}
if (exportShortLabel) {
writer.append(" shortlabel");
}
writer.append("\n");
//body
NodeIterable nodeIterable = graph.getNodes();
for (Node node : nodeIterable) {
Progress.progress(progressTicket);
if (cancel) {
nodeIterable.doBreak();
return;
}
writer.append(node.getId().toString());
if (exportCoords) {
if (!normalize) {
writer.append(" ").append(Float.toString(node.x())).append(" ").append(Float.toString(node.y()));
} else {
writer.append(" ").append(Double.toString((node.x() - minX) / (maxX - minX))).append(" ").append(Double.toString((node.y() - minY) / (maxY - minY)));
}
}
if (exportSize) {
if (!normalize) {
writer.append(" ").append(Float.toString(node.size()));
} else {
writer.append(" ").append(Double.toString((node.size() - minSize) / (maxSize - minSize)));
}
}
if (exportColor) {
writer.append(" ").append(Integer.toString((int) (node.r() * 255f)));//[0..1] to [0..255]
}
if (exportShortLabel) {
if (node.getLabel() != null) {
writer.append(" ").append(printParameter(node.getLabel()));
} else {
writer.append(" ").append(printParameter(node.getId()));
}
}
writer.append("\n");
}
}
void printEdgeData(Edge edge, Node source, Node target, Graph graph) throws IOException {
writer.append(printParameter(source.getId()));//from
writer.append(" ").append(printParameter(target.getId()));//to
if (exportEdgeWeight) {
Double weight;
if (exportDynamicWeight) {
weight = edge.getWeight(graph.getView());
} else {
weight = edge.getWeight();
}
writer.append(" ").append(weight.toString());
}
if (exportAttributes) {
for (Column column : edge.getAttributeColumns()) {
if (!column.isProperty()) {
Object value = edge.getAttribute(column, graph.getView());
if (value != null) {
writer.append(" ").append(printParameter(value));
} else {
writer.append(" " + valueForEmptyAttributes);
}
}
}
}
writer.append("\n");
}
/*
* prints edge data as "from to (strength)? (attributes)*"
*/
private void exportEdgeData(Graph graph) throws IOException {
writer.append("*Tie data\n");
writer.append("from to");
if (exportEdgeWeight) {
writer.append(" strength");
}
if (exportAttributes) {
for (Column col : graph.getModel().getEdgeTable()) {
if (!col.isProperty()) {
writer.append(" ").append(printParameter(col.getTitle()).replace(' ', '_'));
//replace spaces because importer can't read attributes titles in quotes
}
}
}
writer.append("\n");
EdgeIterable edgeIterable = graph.getEdges();
for (Edge edge : edgeIterable) {
printEdgeData(edge, edge.getSource(), edge.getTarget(), graph);//all edges in vna are directed, so make clone
if (!edge.isDirected() && !edge.isSelfLoop()) {
printEdgeData(edge, edge.getTarget(), edge.getSource(), graph);
}
Progress.progress(progressTicket);
if (cancel) {
edgeIterable.doBreak();
return;
}
}
}
@Override
public void setWorkspace(Workspace workspace) {
this.workspace = workspace;
}
@Override
public Workspace getWorkspace() {
return workspace;
}
@Override
public boolean cancel() {
cancel = true;
return true;
}
@Override
public void setProgressTicket(ProgressTicket progressTicket) {
this.progressTicket = progressTicket;
}
@Override
public void setWriter(Writer writer) {
this.writer = writer;
}
public boolean isExportColor() {
return exportColor;
}
public void setExportColor(boolean exportColor) {
this.exportColor = exportColor;
}
public boolean isExportCoords() {
return exportCoords;
}
public void setExportCoords(boolean exportCoords) {
this.exportCoords = exportCoords;
}
public boolean isExportEdgeWeight() {
return exportEdgeWeight;
}
public void setExportEdgeWeight(boolean exportEdgeWeight) {
this.exportEdgeWeight = exportEdgeWeight;
}
public boolean isExportShortLabel() {
return exportShortLabel;
}
public void setExportShortLabel(boolean exportShortLabel) {
this.exportShortLabel = exportShortLabel;
}
public boolean isExportSize() {
return exportSize;
}
public void setExportSize(boolean exportSize) {
this.exportSize = exportSize;
}
public boolean isExportAttributes() {
return exportAttributes;
}
public void setExportAttributes(boolean exportAttributes) {
this.exportAttributes = exportAttributes;
}
public boolean isNormalize() {
return normalize;
}
public void setNormalize(boolean normalize) {
this.normalize = normalize;
}
}