test/javatestfile.java

Fri, 04 Mar 2016 14:48:28 +0100

author
Mike Becker <universe@uap-core.de>
date
Fri, 04 Mar 2016 14:48:28 +0100
changeset 35
abaf2489c549
parent 25
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permissions
-rw-r--r--

adjusted copyright info

25
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1 /*
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2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
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3 *
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4 * Copyright 2014 Mike Becker. All rights reserved.
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5 *
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6 * Redistribution and use in source and binary forms, with or without
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7 * modification, are permitted provided that the following conditions are met:
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8 *
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9 * 1. Redistributions of source code must retain the above copyright
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10 * notice, this list of conditions and the following disclaimer.
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11 *
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12 * 2. Redistributions in binary form must reproduce the above copyright
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13 * notice, this list of conditions and the following disclaimer in the
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14 * documentation and/or other materials provided with the distribution.
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15 *
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16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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26 * POSSIBILITY OF SUCH DAMAGE.
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27 *
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28 */
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29
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30 package de.uapcore.sigred.doc.base;
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31
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32 import de.uapcore.sigred.doc.Resources;
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33 import de.uapcore.sigrapi.impl.Digraph;
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34 import de.uapcore.sigrapi.impl.Graph;
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35 import de.uapcore.sigrapi.IGraph;
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36 import java.io.IOException;
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37 import java.io.InputStream;
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38 import java.io.OutputStream;
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39 import java.util.concurrent.atomic.AtomicBoolean;
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40 import java.util.concurrent.atomic.AtomicReference;
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41 import org.apache.xerces.impl.Constants;
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42 import org.dom4j.Document;
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43 import org.dom4j.DocumentException;
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44 import org.dom4j.DocumentHelper;
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45 import org.dom4j.Element;
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46 import org.dom4j.Namespace;
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47 import org.dom4j.QName;
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48 import org.dom4j.io.OutputFormat;
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49 import org.dom4j.io.SAXReader;
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50 import org.dom4j.io.XMLWriter;
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51 import org.xml.sax.ErrorHandler;
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52 import org.xml.sax.SAXException;
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53 import org.xml.sax.SAXParseException;
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54
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55 public abstract class AbstractGraphDocument<T extends IGraph>
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56 extends FileBackedDocument {
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57
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58 protected static final Namespace NAMESPACE = Namespace.get("sigred",
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59 "http://develop.uap-core.de/sigred/");
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60
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61 private static final
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62 QName TAG_GRAPHDOC = QName.get("graph-document", NAMESPACE);
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63 private static final
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64 QName TAG_GRAPH = QName.get("graph", NAMESPACE);
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65 private static final
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66 QName TAG_DIGRAPH = QName.get("digraph", NAMESPACE);
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67 private static final
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68 QName TAG_METADATA = QName.get("metadata", NAMESPACE);
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69
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70 protected final T graph;
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71
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72 private final GraphDocumentMetadata metadata;
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73
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74 public AbstractGraphDocument(Class<T> graphType) {
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75 T g;
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76 try {
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77 g = graphType.newInstance();
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78 } catch (ReflectiveOperationException e) {
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79 assert false;
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80 g = null; // for the compiler
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81 }
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82 graph = g;
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83 metadata = new GraphDocumentMetadata();
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84 }
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85
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86 public T getGraph() {
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87 return graph;
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88 }
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89
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90 public GraphDocumentMetadata getMetadata() {
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91 return metadata;
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92 }
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93
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94 protected abstract void writeGraph(Element rootNode) throws IOException;
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95 protected abstract void readGraph(Element rootNode) throws IOException;
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96
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97 @Override
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98 public void writeTo(OutputStream out) throws IOException {
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99 Document doc = DocumentHelper.createDocument();
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100
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101 Element rootNode = doc.addElement(TAG_GRAPHDOC);
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102
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103 Element metadataNode = rootNode.addElement(TAG_METADATA);
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104
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105 metadata.write(metadataNode);
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106
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107 if (graph instanceof Graph) {
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108 writeGraph(rootNode.addElement(TAG_GRAPH));
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109 } else if (graph instanceof Digraph) {
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110 writeGraph(rootNode.addElement(TAG_DIGRAPH));
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111 } else {
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112 throw new IOException("unsupported graph type");
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113 }
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114
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115 XMLWriter writer = new XMLWriter(out, OutputFormat.createPrettyPrint());
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116 writer.write(doc);
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117 writer.flush();
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118 }
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119
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120 @Override
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121 public void readFrom(InputStream in) throws IOException {
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122 try {
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123 SAXReader reader = new SAXReader(true);
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124 reader.setStripWhitespaceText(true);
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125
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126 reader.setFeature(Constants.XERCES_FEATURE_PREFIX+
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127 Constants.SCHEMA_VALIDATION_FEATURE, true);
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128 reader.setProperty(Constants.XERCES_PROPERTY_PREFIX +
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129 Constants.SCHEMA_LOCATION, String.format("%s %s",
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130 NAMESPACE.getURI(), Resources.class.getResource(
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131 "graph-document.xsd").toExternalForm()));
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132
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133 final AtomicBoolean passed = new AtomicBoolean(true);
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134 final AtomicReference<SAXParseException> xmlerror = new AtomicReference<>();
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135 // TODO: we should do more detailed error handling here
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136 reader.setErrorHandler(new ErrorHandler() {
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137 @Override
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138 public void warning(SAXParseException exception) throws SAXException {
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139 }
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140
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141 @Override
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142 public void error(SAXParseException exception) throws SAXException {
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143 xmlerror.set(exception);
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144 passed.set(false);
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145 }
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146
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147 @Override
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148 public void fatalError(SAXParseException exception) throws SAXException {
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149 xmlerror.set(exception);
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150 passed.set(false);
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151 }
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152
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153 });
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154 Document doc = reader.read(in);
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155 if (!passed.get()) {
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156 // TODO: provide details (maybe via separate error object?)
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157 throw xmlerror.get();
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158 }
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159
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160 doc.normalize();
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161
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162 Element root = doc.getRootElement();
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163 metadata.read(root.element(TAG_METADATA));
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164
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165 if (graph instanceof Graph) {
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166 readGraph(root.element(TAG_GRAPH));
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167 } else if (graph instanceof Digraph) {
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168 readGraph(root.element(TAG_DIGRAPH));
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169 } else {
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170 throw new IOException("unsupported graph type");
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171 }
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172 } catch (DocumentException | SAXException ex) {
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173 throw new IOException(ex);
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174 }
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175 }
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176 }

mercurial