/*
Copyright 2008-2010 Gephi
Authors : Mathieu Bastian <mathieu.bastian@gephi.org>
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.graph.dhns.utils;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import javax.xml.stream.XMLStreamWriter;
import javax.xml.stream.events.XMLEvent;
import org.gephi.graph.api.EdgeData;
import org.gephi.graph.api.NodeData;
import org.gephi.graph.dhns.core.Dhns;
import org.gephi.graph.dhns.core.GraphStructure;
import org.gephi.graph.dhns.core.TreeStructure;
import org.gephi.graph.dhns.edge.AbstractEdge;
import org.gephi.graph.dhns.edge.EdgeDataImpl;
import org.gephi.graph.dhns.edge.iterators.EdgeIterator;
import org.gephi.graph.dhns.node.AbstractNode;
import org.gephi.graph.dhns.node.NodeDataImpl;
import org.gephi.graph.dhns.node.iterators.TreeListIterator;
import org.gephi.graph.dhns.predicate.Tautology;
/**
*
* @author Mathieu Bastian
*/
public class DataSerializer {
private static final String ELEMENT_DATA = "Data";
private static final String ELEMENT_NODEDATA = "nodedata";
private static final String ELEMENT_NODEDATA_POSITION = "position";
private static final String ELEMENT_NODEDATA_COLOR = "color";
private static final String ELEMENT_NODEDATA_SIZE = "size";
private static final String ELEMENT_EDGEDATA = "edgedata";
private static final String ELEMENT_EDGEDATA_COLOR = "color";
public void writeData(XMLStreamWriter writer, Dhns dhns) throws XMLStreamException {
writer.writeStartElement(ELEMENT_DATA);
TreeStructure treeStructure = dhns.getGraphStructure().getMainView().getStructure();
TreeListIterator itr = new TreeListIterator(treeStructure.getTree(), 1);
for (; itr.hasNext();) {
AbstractNode absNode = itr.next();
NodeDataImpl nodeData = absNode.getNodeData();
if (nodeData != null) {
writeNodeData(writer, nodeData);
}
}
EdgeIterator edgeIterator = new EdgeIterator(treeStructure, new TreeListIterator(treeStructure.getTree(), 1), false, Tautology.instance, Tautology.instance);
for (; edgeIterator.hasNext();) {
EdgeDataImpl edgeData = edgeIterator.next().getEdgeData();
if (edgeData != null) {
writeEdgeData(writer, edgeData);
}
}
writer.writeEndElement();
}
public void readData(XMLStreamReader reader, Dhns dhns) throws XMLStreamException {
GraphStructure structure = dhns.getGraphStructure();
TreeStructure treeStructure = structure.getMainView().getStructure();
boolean end = false;
while (reader.hasNext() && !end) {
Integer eventType = reader.next();
if (eventType.equals(XMLEvent.START_ELEMENT)) {
String name = reader.getLocalName();
if (ELEMENT_NODEDATA.equalsIgnoreCase(name)) {
AbstractNode node = treeStructure.getNodeAt(Integer.parseInt(reader.getAttributeValue(null, "nodepre")));
NodeDataImpl nodeDataImpl = (NodeDataImpl) node.getNodeData();
readNodeData(reader, nodeDataImpl, structure);
} else if (ELEMENT_EDGEDATA.equalsIgnoreCase(name)) {
AbstractNode source = treeStructure.getNodeAt(Integer.parseInt(reader.getAttributeValue(null, "sourcepre")));
AbstractNode target = treeStructure.getNodeAt(Integer.parseInt(reader.getAttributeValue(null, "targetpre")));
AbstractEdge edge = source.getEdgesOutTree().getItem(target.getId());
EdgeDataImpl edgeDataImpl = (EdgeDataImpl) edge.getEdgeData();
readEdgeData(reader, edgeDataImpl, structure);
}
} else if (eventType.equals(XMLStreamReader.END_ELEMENT)) {
if (ELEMENT_DATA.equalsIgnoreCase(reader.getLocalName())) {
end = true;
}
}
}
}
public void writeNodeData(XMLStreamWriter writer, NodeDataImpl nodeData) throws XMLStreamException {
writer.writeStartElement(ELEMENT_NODEDATA);
AbstractNode node = nodeData.getRootNode();
writer.writeAttribute("nodepre", String.valueOf(node.getPre()));
if (nodeData.getId() != null && !nodeData.getId().equals(String.valueOf(node.getId()))) {
writer.writeAttribute("id", nodeData.getId());
}
writer.writeStartElement(ELEMENT_NODEDATA_POSITION);
writer.writeAttribute("x", String.valueOf(nodeData.x()));
writer.writeAttribute("y", String.valueOf(nodeData.y()));
writer.writeAttribute("z", String.valueOf(nodeData.z()));
writer.writeEndElement();
writer.writeStartElement(ELEMENT_NODEDATA_COLOR);
writer.writeAttribute("r", String.valueOf(nodeData.r()));
writer.writeAttribute("g", String.valueOf(nodeData.g()));
writer.writeAttribute("b", String.valueOf(nodeData.b()));
writer.writeAttribute("a", String.valueOf(nodeData.alpha()));
writer.writeEndElement();
writer.writeStartElement(ELEMENT_NODEDATA_SIZE);
writer.writeAttribute("value", String.valueOf(nodeData.getSize()));
writer.writeEndElement();
writer.writeEndElement();
}
public void readNodeData(XMLStreamReader reader, NodeData nodeData, GraphStructure structure) throws XMLStreamException {
if (reader.getAttributeValue(null, "id") != null) {
structure.setNodeId((NodeDataImpl) nodeData, reader.getAttributeValue(null, "id"));
}
boolean end = false;
while (reader.hasNext() && !end) {
Integer eventType = reader.next();
if (eventType.equals(XMLEvent.START_ELEMENT)) {
String name = reader.getLocalName();
if (ELEMENT_NODEDATA_POSITION.equalsIgnoreCase(name)) {
nodeData.setX(Float.parseFloat(reader.getAttributeValue(null, "x")));
nodeData.setY(Float.parseFloat(reader.getAttributeValue(null, "y")));
nodeData.setZ(Float.parseFloat(reader.getAttributeValue(null, "z")));
} else if (ELEMENT_NODEDATA_COLOR.equalsIgnoreCase(name)) {
nodeData.setR(Float.parseFloat(reader.getAttributeValue(null, "r")));
nodeData.setG(Float.parseFloat(reader.getAttributeValue(null, "g")));
nodeData.setB(Float.parseFloat(reader.getAttributeValue(null, "b")));
nodeData.setAlpha(Float.parseFloat(reader.getAttributeValue(null, "a")));
} else if (ELEMENT_NODEDATA_SIZE.equalsIgnoreCase(name)) {
nodeData.setSize(Float.parseFloat(reader.getAttributeValue(0)));
}
} else if (eventType.equals(XMLStreamReader.END_ELEMENT)) {
if (ELEMENT_NODEDATA.equalsIgnoreCase(reader.getLocalName())) {
end = true;
}
}
}
}
public void writeEdgeData(XMLStreamWriter writer, EdgeDataImpl edgeData) throws XMLStreamException {
writer.writeStartElement(ELEMENT_EDGEDATA);
AbstractEdge edge = edgeData.getEdge();
writer.writeAttribute("sourcepre", String.valueOf(edge.getSource().getPre()));
writer.writeAttribute("targetpre", String.valueOf(edge.getTarget().getPre()));
if (edgeData.getId() != null && !edgeData.getId().equals(String.valueOf(edge.getId()))) {
writer.writeAttribute("id", edgeData.getId());
}
writer.writeStartElement(ELEMENT_EDGEDATA_COLOR);
writer.writeAttribute("r", String.valueOf(edgeData.r()));
writer.writeAttribute("g", String.valueOf(edgeData.g()));
writer.writeAttribute("b", String.valueOf(edgeData.b()));
writer.writeAttribute("a", String.valueOf(edgeData.alpha()));
writer.writeEndElement();
writer.writeEndElement();
}
public void readEdgeData(XMLStreamReader reader, EdgeData edgeData, GraphStructure structure) throws XMLStreamException {
if (reader.getAttributeValue(null, "id") != null) {
structure.setEdgeId((AbstractEdge) edgeData.getEdge(), reader.getAttributeValue(null, "id"));
}
boolean end = false;
while (reader.hasNext() && !end) {
Integer eventType = reader.next();
if (eventType.equals(XMLEvent.START_ELEMENT)) {
String name = reader.getLocalName();
if (ELEMENT_EDGEDATA_COLOR.equalsIgnoreCase(name)) {
edgeData.setR(Float.parseFloat(reader.getAttributeValue(null, "r")));
edgeData.setG(Float.parseFloat(reader.getAttributeValue(null, "g")));
edgeData.setB(Float.parseFloat(reader.getAttributeValue(null, "b")));
edgeData.setAlpha(Float.parseFloat(reader.getAttributeValue(null, "a")));
}
} else if (eventType.equals(XMLStreamReader.END_ELEMENT)) {
if (ELEMENT_EDGEDATA.equalsIgnoreCase(reader.getLocalName())) {
end = true;
}
}
}
}
}