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/* GraphBundleSaver.java
* =========================================================================
* This file is part of the GrInvIn project - http://www.grinvin.org
*
* Copyright (C) 2005-2008 Universiteit Gent
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 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
* General Public License for more details.
*
* A copy of the GNU General Public License can be found in the file
* LICENSE.txt provided with the source distribution of this program (see
* the META-INF directory in the source jar). This license can also be
* found on the GNU website at http://www.gnu.org/licenses/gpl.html.
*
* If you did not receive a copy of the GNU General Public License along
* with this program, contact the lead developer, or write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
package org.grinvin.io.graphs;
import java.io.IOException;
import java.io.OutputStream;
import java.util.Properties;
import java.util.zip.ZipOutputStream;
import org.grinvin.graphs.AnnotationView;
import org.grinvin.graphs.EmbeddingView;
import org.grinvin.graphs.GraphBundleView;
import org.grinvin.graphs.GraphView;
import org.grinvin.gui.icons.DefaultGraphIconFactory;
import org.grinvin.gui.icons.GraphIconFactory;
import org.grinvin.io.InvariantValuesSaver;
import org.grinvin.io.SectionSaver;
import org.grinvin.io.ZipOutputStreamSectionSaver;
/**
* Saves a {@link GraphBundleView} onto an output stream.
*/
public class GraphBundleSaver {
//
private final GraphBundleView bundle;
//
private final SectionSaver ssaver;
//
private final String path;
/**
* Default constructor.
*/
private GraphBundleSaver(GraphBundleView bundle, SectionSaver ssaver) {
this(bundle, ssaver, null);
}
private GraphBundleSaver(GraphBundleView bundle, SectionSaver ssaver, String path) {
this.bundle = bundle;
this.ssaver = ssaver;
this.path = path;
}
//
private static final String ZIPFILE_COMMENT =
"Graph bundle -- Saved by org.grinvin.io.GraphBundleSaver";
//
private static final Class<DefaultGraphIconFactory>
DEFAULT_GRAPH_ICON_FACTORY_CLASS = DefaultGraphIconFactory.class;
/**
* Create the entry with the given name.
*/
private OutputStream createEntry(String name) throws IOException {
if (path != null)
return ssaver.createSection(path + "/" + name);
else
return ssaver.createSection(name);
}
/**
* Save the meta-information for the graph.
*/
private void saveMeta() throws IOException {
Properties meta = new Properties();
meta.setProperty("version", "1.1");
meta.setProperty("nrOfEmbeddings", Integer.toString(bundle.getEmbeddingCount()));
meta.setProperty("nrOfAnnotations", Integer.toString(bundle.getAnnotationCount()));
GraphIconFactory gif = bundle.getGraphIconFactory();
if (gif != null) {
Class<?> gifClass = gif.getClass();
if (!DEFAULT_GRAPH_ICON_FACTORY_CLASS.equals(gifClass))
meta.setProperty("graphIconFactory", gifClass.getName());
}
OutputStream out = createEntry("meta-info.xml");
meta.storeToXML(out, null);
}
/**
* Save the graph properties.
*/
private void saveProperties() throws IOException {
OutputStream out = createEntry("resources.xml");
bundle.getProperties().save(out);
}
/**
* Save the abstract graph.
*/
private void saveGraph() throws IOException {
GraphView graph = bundle.getGraph();
OutputStream out = createEntry("graph.xml");
GraphSaver.save(graph, out);
}
/**
* Save the embedding with the given index.
*/
private void saveEmbedding(int index) throws IOException {
EmbeddingView embedding = bundle.getEmbedding(index);
String name = "embedding_" + index + ".xml";
OutputStream out = createEntry(name);
EmbeddingSaver.save(embedding, out);
}
/**
* Save the annotation with the given index.
*/
private void saveAnnotation(int index) throws IOException {
AnnotationView annotation = bundle.getAnnotation(index);
String name = "annotation_" + index + ".xml";
OutputStream out = createEntry(name);
AnnotationSaver.save(annotation, out);
}
//
private void saveInvariantValues() throws IOException {
OutputStream out = createEntry("invariantvalues.xml");
InvariantValuesSaver.save(bundle.getInvariantValues(), out);
}
/**
* Save the bundle and close the outputstream.
*/
private void save() throws IOException {
saveProperties();
saveGraph();
saveMeta();
for (int i=0; i < bundle.getEmbeddingCount(); i++)
saveEmbedding(i);
for (int i=0; i < bundle.getAnnotationCount(); i++)
saveAnnotation(i);
saveInvariantValues();
}
/**
* Save the bundle onto the output stream.
* @param bundle Bundle which should be saved
* @param out Output stream to which the bundle should be written
*/
public static void saveToZip(GraphBundleView bundle, OutputStream out) throws IOException {
ZipOutputStream zip = new ZipOutputStream(out);
zip.setComment(ZIPFILE_COMMENT);
GraphBundleSaver saver = new GraphBundleSaver(bundle, new ZipOutputStreamSectionSaver(zip));
saver.save();
zip.finish();
out.close();
}
public static void save(GraphBundleView bundle, SectionSaver ssaver, String path) throws IOException {
GraphBundleSaver saver = new GraphBundleSaver(bundle, ssaver, path);
saver.save();
}
}
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