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1 package de.mpiwg.itgroup.annotationManager.RDFHandling;
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2
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3 import java.text.DateFormat;
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4 import java.text.SimpleDateFormat;
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5 import java.util.ArrayList;
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6 import java.util.Calendar;
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7 import java.util.Date;
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8 import java.util.List;
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9
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10 import org.apache.log4j.Logger;
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11 import org.openrdf.repository.RepositoryException;
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12 import org.restlet.Context;
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13 import org.restlet.engine.component.ChildContext;
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14
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15 import de.mpiwg.itgroup.annotationManager.Constants.NS;
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16 import de.mpiwg.itgroup.annotationManager.Errors.TripleStoreStoreError;
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17 import de.mpiwg.itgroup.annotationManager.Errors.XPointerError;
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5
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18 import de.mpiwg.itgroup.triplestoremanager.exceptions.TripleStoreHandlerException;
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19 import de.mpiwg.itgroup.triplestoremanager.owl.TripleStoreHandler;
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20 import de.mpiwg.itgroup.triplestoremanager.owl.TripleStoreHandler.LiteralQuadruple;
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21 import de.mpiwg.itgroup.triplestoremanager.owl.TripleStoreHandler.Quadruple;
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0
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22
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23 /**
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24 * @author dwinter
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17
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25 *
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26 * Klasse zum Konvertieren von Annotationen zum mpiwg RDF-Format: http://ontologies.mpiwg-berlin.mpg.de/annotations/
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27 */
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28
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29 public class Convert {
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30 private String context = "file:///annotations";
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31 private static Logger logger = Logger.getRootLogger();
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25
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32 private String urlBase = "http://entities.mpiwg-berlin.mpg.de/annotations/"; // TODO should go into config
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17
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33
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34 public Convert(String context) {
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35 this.context = context;
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36 }
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37
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38 /**
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39 *
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40 * @param xpointer
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41 * Beschreibt die Annotation
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42 * @param creator
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43 * Username des Creators
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44 * @param time
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45 * Erstellungszeit, wenn null wird das aktuelle Datum verwenden beim Konvertieren
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46 * @param text
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47 * der Annotation
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48 * @param type
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49 * Annotationstype (Entsprechend den in http://www.w3.org/2000/10/annotationType# definierten.)
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50 * @return
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51 */
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52
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53 private List<Quadruple> annot2quadruple(String xpointer, String creator, String time, String annot, String type) {
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54 return annot2quadruple(new Annotation(xpointer, creator, time, annot, type));
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55 }
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56
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57 /**
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58 * @param annot
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59 * @return
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60 */
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61 public List<Quadruple> annot2quadruple(Annotation annot) {
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62 List<Quadruple> retQuad = new ArrayList<Quadruple>();
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63
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64 // create new URL if annot has no annotationUrl
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65 String annotationUrl = annot.getAnnotationUri();
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66 if (annotationUrl == null) {
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67 annotationUrl = createRessourceURL("annot:");
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68 }
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25
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69 // type
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70 // TODO: where to get types?
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71 retQuad.add(new LiteralQuadruple(annotationUrl, NS.RDF + "type", annot.type, context));
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72
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73 // author
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74 if (annot.creator.startsWith("http")) {
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75 retQuad.add(new Quadruple(annotationUrl, NS.DCTERMS_NS + "creator", annot.creator, context));
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76 } else {
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77 // TODO: this should not happen
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78 retQuad.add(new LiteralQuadruple(annotationUrl, NS.DCTERMS_NS + "creator", annot.creator, context));
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79 }
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80 // creation time
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81 if (annot.time == null) {
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82 SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'");
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83 annot.time = format.format(Calendar.getInstance().getTime());
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84 }
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85 retQuad.add(new LiteralQuadruple(annotationUrl, NS.DCTERMS_NS + "created", annot.time, context));
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17
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86
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87 String[] xpointerSplitted = annot.xpointer.split("#");
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88
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89 if (xpointerSplitted.length > 2) {
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90 throw new XPointerError();
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91 }
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92
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93 // now add the xpointers
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94 retQuad.add(new Quadruple(annotationUrl, NS.MPIWG_annot + "annotatesDocuviewerText", xpointerSplitted[0], context));
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95 retQuad.add(new Quadruple(annotationUrl, NS.MPIWG_annot + "textSelection", annot.xpointer, context));
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96
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97 String annotationtext = createRessourceURL("annotText:");
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98
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99 retQuad.add(new Quadruple(annotationUrl, NS.ANNOTATION_NS + "body", annotationtext, context));
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100
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101 retQuad.add(new Quadruple(annotationtext, NS.RDF + "type", NS.MPIWG_annot + "StandardTextNote", context));
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102
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103 retQuad.add(new LiteralQuadruple(annotationtext, NS.MPIWG_annot + "containsText", annot.text, context));
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104
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105 for (Quadruple ret : retQuad) {
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106 logger.debug(ret.toString());
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107 }
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108
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109 annot.setAnnotationUri(annotationUrl);
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110 return retQuad;
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111 }
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112
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113 /**
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114 * Erzeuge eine urn aus der aktullen Zeit in millis
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115 *
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116 * @return
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117 */
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118 private String createRessourceURL(String prefix) {
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119
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120 Calendar cal = Calendar.getInstance();
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121
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122 long time = cal.getTimeInMillis();
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123
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124 return String.format("%s%s%s", urlBase, prefix, time);
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125
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126 }
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127
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128 /**
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129 * Hier ist die uri der Annotation angegeben.
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130 *
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131 * @param annot
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132 * @return
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133 */
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134
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135 private List<Quadruple> rel2quadruple(Annotation annot) {
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136
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137 List<Quadruple> retQuad = new ArrayList<Quadruple>();
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138
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139 String annotation = createRessourceURL("annot:");
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140
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141 if (annot.time == null) {
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142 SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd'T'hh:mm:ss'Z'");
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143 annot.time = format.format(Calendar.getInstance().getTime());
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144
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145 }
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146
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147 // TODO: check type
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148 retQuad.add(new Quadruple(annotation, NS.RDF + "type", NS.ANNOTATION_TYPE + annot.type, context));
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149
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150 // add author
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151 if (annot.creator.startsWith("http")) {
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152 retQuad.add(new Quadruple(annotation, NS.ANNOTATION_NS + "author", annot.creator, context));
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153 } else {
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154 retQuad.add(new LiteralQuadruple(annotation, NS.ANNOTATION_NS + "author", annot.creator, context));
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155 }
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156
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157 // creation time
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158 retQuad.add(new LiteralQuadruple(annotation, NS.ANNOTATION_NS + "created", annot.time, context));
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159
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160 String[] xpointerSplitted = annot.xpointer.split("#");
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161
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162 if (xpointerSplitted.length > 2) {
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163 throw new XPointerError();
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164 }
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165
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166 // now add the xpointers
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167 retQuad.add(new Quadruple(annotation, NS.MPIWG_annot + "annotatesDocuviewerText", xpointerSplitted[0], context));
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168 retQuad.add(new Quadruple(annotation, NS.MPIWG_annot + "textSelection", annot.xpointer, context));
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169
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170 // String annotationtext =createRessourceURL("annotText:");
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171
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172 retQuad.add(new Quadruple(annotation, NS.ANNOTATION_NS + "body", annot.url, context));
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173
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174 retQuad.add(new Quadruple(annot.url, NS.RDF + "type", NS.MPIWG_annot + "ExtendedAnnotation", context));
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175
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176 for (Quadruple ret : retQuad) {
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177 logger.debug(ret.toString());
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178 }
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179
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180 // save new annotation url in annotation object
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181 annot.setAnnotationUri(annotation);
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182 return retQuad;
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183
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184 }
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185
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186 /**
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187 * Stores the Annotation in the TripleStore.
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188 *
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189 * @param annot
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190 * @return
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191 * @throws TripleStoreStoreError
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192 */
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193 public Annotation storeAnnotation(Annotation annot) throws TripleStoreStoreError {
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194 List<Quadruple> annotationRdf = new ArrayList<Quadruple>();
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195 if ((annot.type == null) || annot.type.equals("")) {
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196 annot.type = "Comment";
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197 }
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198 if (annot.text != null && !annot.text.equals("")) {
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199 annotationRdf = annot2quadruple(annot);
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200 }
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201 if (annot.url != null && !annot.url.equals("")) {
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202 annotationRdf.addAll(rel2quadruple(annot));
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203 }
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204 try {
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205 TripleStoreHandler th = TripleStoreConnection.newTripleStoreHandler();
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206 th.write(annotationRdf);
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207 } catch (RepositoryException e) {
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208 // TODO Auto-generated catch block
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209 e.printStackTrace();
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210 throw new TripleStoreStoreError();
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211 } catch (TripleStoreHandlerException e) {
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212 // TODO Auto-generated catch block
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213 e.printStackTrace();
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214 throw new TripleStoreStoreError();
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215 }
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216 return annot;
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217 }
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218
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219 /**
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220 * @param args
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221 */
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222 public static void main(String[] args) {
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223 Convert myConvert = new Convert("http://annotations.rdf");
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224 List<Quadruple> rets = myConvert
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225 .annot2quadruple(
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226 "http://mpdl-dev.mpiwg-berlin.mpg.de/ECHOdocuViewfullTest?url=/mpiwg/online/permanent/library/163127KK&viewMode=text&pn=7#xpointer(string-range(id("s1"), "", 66, 12))",
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227 "mbuchman", null, "myannot", "Example");
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228 for (Quadruple ret : rets) {
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229 System.out.println(ret.toString());
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230 }
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231 }
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232
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233 }
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