1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/test/javatestfile.java Tue Apr 21 09:47:52 2015 +0200
1.3 @@ -0,0 +1,176 @@
1.4 +/*
1.5 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
1.6 + *
1.7 + * Copyright 2014 Mike Becker. All rights reserved.
1.8 + *
1.9 + * Redistribution and use in source and binary forms, with or without
1.10 + * modification, are permitted provided that the following conditions are met:
1.11 + *
1.12 + * 1. Redistributions of source code must retain the above copyright
1.13 + * notice, this list of conditions and the following disclaimer.
1.14 + *
1.15 + * 2. Redistributions in binary form must reproduce the above copyright
1.16 + * notice, this list of conditions and the following disclaimer in the
1.17 + * documentation and/or other materials provided with the distribution.
1.18 + *
1.19 + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
1.20 + * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
1.21 + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
1.22 + * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
1.23 + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
1.24 + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
1.25 + * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
1.26 + * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
1.27 + * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
1.28 + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
1.29 + * POSSIBILITY OF SUCH DAMAGE.
1.30 + *
1.31 + */
1.32 +
1.33 +package de.uapcore.sigred.doc.base;
1.34 +
1.35 +import de.uapcore.sigred.doc.Resources;
1.36 +import de.uapcore.sigrapi.impl.Digraph;
1.37 +import de.uapcore.sigrapi.impl.Graph;
1.38 +import de.uapcore.sigrapi.IGraph;
1.39 +import java.io.IOException;
1.40 +import java.io.InputStream;
1.41 +import java.io.OutputStream;
1.42 +import java.util.concurrent.atomic.AtomicBoolean;
1.43 +import java.util.concurrent.atomic.AtomicReference;
1.44 +import org.apache.xerces.impl.Constants;
1.45 +import org.dom4j.Document;
1.46 +import org.dom4j.DocumentException;
1.47 +import org.dom4j.DocumentHelper;
1.48 +import org.dom4j.Element;
1.49 +import org.dom4j.Namespace;
1.50 +import org.dom4j.QName;
1.51 +import org.dom4j.io.OutputFormat;
1.52 +import org.dom4j.io.SAXReader;
1.53 +import org.dom4j.io.XMLWriter;
1.54 +import org.xml.sax.ErrorHandler;
1.55 +import org.xml.sax.SAXException;
1.56 +import org.xml.sax.SAXParseException;
1.57 +
1.58 +public abstract class AbstractGraphDocument<T extends IGraph>
1.59 + extends FileBackedDocument {
1.60 +
1.61 + protected static final Namespace NAMESPACE = Namespace.get("sigred",
1.62 + "http://develop.uap-core.de/sigred/");
1.63 +
1.64 + private static final
1.65 + QName TAG_GRAPHDOC = QName.get("graph-document", NAMESPACE);
1.66 + private static final
1.67 + QName TAG_GRAPH = QName.get("graph", NAMESPACE);
1.68 + private static final
1.69 + QName TAG_DIGRAPH = QName.get("digraph", NAMESPACE);
1.70 + private static final
1.71 + QName TAG_METADATA = QName.get("metadata", NAMESPACE);
1.72 +
1.73 + protected final T graph;
1.74 +
1.75 + private final GraphDocumentMetadata metadata;
1.76 +
1.77 + public AbstractGraphDocument(Class<T> graphType) {
1.78 + T g;
1.79 + try {
1.80 + g = graphType.newInstance();
1.81 + } catch (ReflectiveOperationException e) {
1.82 + assert false;
1.83 + g = null; // for the compiler
1.84 + }
1.85 + graph = g;
1.86 + metadata = new GraphDocumentMetadata();
1.87 + }
1.88 +
1.89 + public T getGraph() {
1.90 + return graph;
1.91 + }
1.92 +
1.93 + public GraphDocumentMetadata getMetadata() {
1.94 + return metadata;
1.95 + }
1.96 +
1.97 + protected abstract void writeGraph(Element rootNode) throws IOException;
1.98 + protected abstract void readGraph(Element rootNode) throws IOException;
1.99 +
1.100 + @Override
1.101 + public void writeTo(OutputStream out) throws IOException {
1.102 + Document doc = DocumentHelper.createDocument();
1.103 +
1.104 + Element rootNode = doc.addElement(TAG_GRAPHDOC);
1.105 +
1.106 + Element metadataNode = rootNode.addElement(TAG_METADATA);
1.107 +
1.108 + metadata.write(metadataNode);
1.109 +
1.110 + if (graph instanceof Graph) {
1.111 + writeGraph(rootNode.addElement(TAG_GRAPH));
1.112 + } else if (graph instanceof Digraph) {
1.113 + writeGraph(rootNode.addElement(TAG_DIGRAPH));
1.114 + } else {
1.115 + throw new IOException("unsupported graph type");
1.116 + }
1.117 +
1.118 + XMLWriter writer = new XMLWriter(out, OutputFormat.createPrettyPrint());
1.119 + writer.write(doc);
1.120 + writer.flush();
1.121 + }
1.122 +
1.123 + @Override
1.124 + public void readFrom(InputStream in) throws IOException {
1.125 + try {
1.126 + SAXReader reader = new SAXReader(true);
1.127 + reader.setStripWhitespaceText(true);
1.128 +
1.129 + reader.setFeature(Constants.XERCES_FEATURE_PREFIX+
1.130 + Constants.SCHEMA_VALIDATION_FEATURE, true);
1.131 + reader.setProperty(Constants.XERCES_PROPERTY_PREFIX +
1.132 + Constants.SCHEMA_LOCATION, String.format("%s %s",
1.133 + NAMESPACE.getURI(), Resources.class.getResource(
1.134 + "graph-document.xsd").toExternalForm()));
1.135 +
1.136 + final AtomicBoolean passed = new AtomicBoolean(true);
1.137 + final AtomicReference<SAXParseException> xmlerror = new AtomicReference<>();
1.138 + // TODO: we should do more detailed error handling here
1.139 + reader.setErrorHandler(new ErrorHandler() {
1.140 + @Override
1.141 + public void warning(SAXParseException exception) throws SAXException {
1.142 + }
1.143 +
1.144 + @Override
1.145 + public void error(SAXParseException exception) throws SAXException {
1.146 + xmlerror.set(exception);
1.147 + passed.set(false);
1.148 + }
1.149 +
1.150 + @Override
1.151 + public void fatalError(SAXParseException exception) throws SAXException {
1.152 + xmlerror.set(exception);
1.153 + passed.set(false);
1.154 + }
1.155 +
1.156 + });
1.157 + Document doc = reader.read(in);
1.158 + if (!passed.get()) {
1.159 + // TODO: provide details (maybe via separate error object?)
1.160 + throw xmlerror.get();
1.161 + }
1.162 +
1.163 + doc.normalize();
1.164 +
1.165 + Element root = doc.getRootElement();
1.166 + metadata.read(root.element(TAG_METADATA));
1.167 +
1.168 + if (graph instanceof Graph) {
1.169 + readGraph(root.element(TAG_GRAPH));
1.170 + } else if (graph instanceof Digraph) {
1.171 + readGraph(root.element(TAG_DIGRAPH));
1.172 + } else {
1.173 + throw new IOException("unsupported graph type");
1.174 + }
1.175 + } catch (DocumentException | SAXException ex) {
1.176 + throw new IOException(ex);
1.177 + }
1.178 + }
1.179 +}
