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1 package org.snipsnap.serialization.rdf;
2
3 import java.util.List  ;
4 import java.util.ArrayList ;
5 import com.hp.hpl.mesa.rdf.jena.model.*;
6 import com.hp.hpl.mesa.rdf.jena.vocabulary.RDF;
7 import com.hp.hpl.mesa.rdf.jena.common.ResourceImpl;
8
9 import org.snipsnap.snip.Snip;
10 import org.snipsnap.snip.label.Label;
11 import org.snipsnap.serialization.LabelContext;
12 import org.snipsnap.serialization.LabelSerializer;
13 import org.snipsnap.serialization.SerializerFactory;
14 import org.snipsnap.serialization.rdf.vocabulary.LABEL;
15 import org.snipsnap.serialization.rdf.vocabulary.SNIP;
16
17
21 public class RDFSnipLabelSerializer implements LabelSerializer {
22
23 private Bag labelsBag = null;
24
25 public void serialize(LabelContext labelContext) {
26 if (!(labelContext instanceof RDFLabelContext))
27 throw new RuntimeException ("RDFSnipLabelSerializer expects an RDFLabelContext!");
28 RDFLabelContext rdfLabelContext = (RDFLabelContext) labelContext;
29 Model model = rdfLabelContext.model;
30 Label label = rdfLabelContext.label;
31 Snip snip = rdfLabelContext.snip;
32 Resource snipResource = rdfLabelContext.snipResource;
33 try {
34 if (labelsBag == null) {
35 labelsBag = model.createBag();
36 snipResource.addProperty(LABEL.snipLabels, labelsBag);
37 }
38 Resource labelResource = model.createResource(label.getName());
39 labelResource.addProperty(RDF.type, LABEL.SnipLabel);
40 labelResource.addProperty(SNIP.value, new ResourceImpl(rdfLabelContext.uriPrefix + "#" + label.getValue()));
41 labelsBag.add(labelResource);
42 } catch (RDFException re) {
43 re.printStackTrace();
44 }
45 }
46
47 public List getSupportedLabelTypes() {
48 return s_supportedTypes;
49 }
50
51 public int getOutputFormat() {
52 return SerializerFactory.RDF_10;
53 }
54
55 private static List s_supportedTypes;
56
57 static {
58 s_supportedTypes = new ArrayList ();
59 s_supportedTypes.add("SnipLabel");
60 }
61 }
62 |
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