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50
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1 /**
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2 *
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3 */
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4 package de.mpiwg.itgroup.annotations.restlet.annotations_ui;
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5
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6 import org.apache.log4j.Logger;
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7 import org.restlet.data.Form;
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8 import org.restlet.data.MediaType;
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9 import org.restlet.data.Reference;
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10 import org.restlet.data.Status;
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11 import org.restlet.representation.Representation;
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12 import org.restlet.representation.StringRepresentation;
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13 import org.restlet.resource.Delete;
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14 import org.restlet.resource.Get;
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15 import org.restlet.resource.Put;
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16 import org.restlet.resource.ResourceException;
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17 import org.restlet.resource.ServerResource;
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18
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19 import de.mpiwg.itgroup.annotations.Annotation;
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20 import de.mpiwg.itgroup.annotations.neo4j.AnnotationStore;
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21 import de.mpiwg.itgroup.annotations.restlet.BaseRestlet;
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22
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23 /**
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24 * Resource class for a single annotation.
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25 *
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26 * @author casties
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27 *
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28 */
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29 public class AnnotationResource extends ServerResource {
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30
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31 public static Logger logger = Logger.getLogger(AnnotationResource.class);
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32
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33 protected AnnotationStore store;
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34
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35 protected String requestId;
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36
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37 protected Annotation annotation;
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38
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39 @Override
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40 protected void doInit() throws ResourceException {
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41 super.doInit();
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42 // id from URI /annotations/persons/{id}
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43 requestId = (String) getRequest().getAttributes().get("id");
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44 logger.debug("annoation-id=" + requestId);
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45 // get store instance
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46 if (store == null) {
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47 store = ((BaseRestlet) getApplication()).getAnnotationStore();
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48 }
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49 // get annotation from store
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50 if (requestId != null) {
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51 // the ID in the path is encoded
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52 String id = Annotation.decodeId(requestId);
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53 annotation = store.getAnnotationById(id);
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54 }
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55 }
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56
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57 /**
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58 * GET with HTML content type. Shows the person.
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59 *
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60 * @param entity
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61 * @return
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62 */
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63 @Get("html")
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64 public Representation doGetHTML(Representation entity) {
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65 if (annotation == null) {
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66 // invalid id
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67 setStatus(Status.CLIENT_ERROR_NOT_FOUND);
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68 return null;
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69 }
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70 String result = null;
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71 // get form parameter
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72 Form f = this.getQuery();
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73 String form = f.getFirstValue("form");
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74 if (form != null && form.equals("edit")) {
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75 /*
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76 // output edit form
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77 result = "<html><body>\n";
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78 result += String.format("<h1>Edit person %s</h1>\n", annotation.getId());
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79 result += String.format("<p><a href=\"%s\">All persons</a></p>", this.getReference().getParentRef());
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80 // tunnel PUT method through POST
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81 result += String.format("<form method=\"post\" action=\"%s?method=PUT\">\n", this.getReference().getHierarchicalPart());
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82 result += "<table>";
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83 result += String.format("<tr><td><b>name</b></td><td><input type=\"text\" name=\"name\" value=\"%s\"/></td></tr>\n",
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84 annotation.getName());
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85 result += String.format("<tr><td><b>uri</b></td><td><input type=\"text\" name=\"uri\" value=\"%s\"/></td></tr>\n",
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86 annotation.getUriString());
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87 result += "</table>\n";
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88 result += "<p><input type=\"submit\"/></p>";
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89 result += "</table>\n</form>\n</body>\n</html>";
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90 */
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91 } else {
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92 // output person content
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93 result = "<html><body>\n<h1>Annotation</h1>\n";
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94 result += String.format("<p><a href=\"%s\">All annotations</a></p>", this.getReference().getParentRef());
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95 result += "<table>";
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96 result += String.format("<tr><td><b>uri</b></td><td>%s</td></tr>\n", annotation.getUri());
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97 result += String.format("<tr><td><b>text</b></td><td>%s</td></tr>\n", annotation.getBodyText());
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98 result += String.format("<tr><td><b>target</b></td><td>%s</td></tr>\n", annotation.getTargetBaseUri());
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99 result += String.format("<tr><td><b>fragment</b></td><td>%s</td></tr>\n", annotation.getTargetFragment());
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100 result += String.format("<tr><td><b>creator</b></td><td>%s</td></tr>\n", annotation.getCreatorName());
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101 result += "</table>\n";
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102 //result += "<p><a href=\"?form=edit\">Edit annotation</a></p>\n";
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103 // tunnel POST as DELETE
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104 result += String.format(
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105 "<form method=\"post\" action=\"%s?method=DELETE\"><input type=\"submit\" value=\"Delete annotation\"/></form>\n",
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106 this.getReference().getHierarchicalPart());
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107 result += "</body>\n</html>";
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108 }
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109 return new StringRepresentation(result, MediaType.TEXT_HTML);
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110 }
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111
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112 /**
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113 * PUT updates the annotation.
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114 *
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115 * @param entity
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116 * @return
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117 */
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118 @Put
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119 public Representation doPut(Representation entity) {
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120 logger.debug("AnnotationResource.doPut!");
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121 if (annotation == null) {
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122 // invalid id
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123 setStatus(Status.CLIENT_ERROR_BAD_REQUEST);
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124 return null;
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125 }
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126 // NOT YET
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127 return null;
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128 /*
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129 // TODO: do authentication
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130 Form form = new Form(entity);
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131 String name = form.getFirstValue("name");
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132 String uri = form.getFirstValue("uri");
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133 if (name != null && !name.isEmpty()) {
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134 annotation.setName(name);
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135 }
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136 if (uri != null && !uri.isEmpty()) {
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137 annotation.setUri(uri);
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138 }
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139 store.storeActor(annotation);
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140 // return 303: see other
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141 setStatus(Status.REDIRECTION_SEE_OTHER);
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142 // go GET same URL
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143 Reference url = this.getReference();
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144 this.getResponse().setLocationRef(url);
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145 return null;
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146 */
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147 }
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148
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149 /**
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150 * DELETE deletes the annotation.
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151 *
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152 * @param entity
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153 * @return
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154 */
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155 @Delete
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156 public Representation doDelete(Representation entity) {
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157 logger.debug("AnnotationResource.doDelete!");
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158 if (annotation == null) {
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159 // invalid id
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160 setStatus(Status.CLIENT_ERROR_BAD_REQUEST);
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161 return null;
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162 }
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163 // TODO: do authentication
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164 store.deleteAnnotationById(annotation.getUri());
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165 // return 303: see other
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166 setStatus(Status.REDIRECTION_SEE_OTHER);
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167 // go GET parent URL
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168 Reference url = this.getReference().getParentRef();
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169 this.getResponse().setLocationRef(url);
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170 return null;
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171 }
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172 }
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