1 | package eu.clarin.oai.provider.impl; |
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2 | |
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3 | import java.util.Arrays; |
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4 | import java.util.List; |
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5 | import java.util.Set; |
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6 | |
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7 | import eu.clarin.oai.provider.OAIException; |
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8 | import eu.clarin.oai.provider.SetSpecDesc; |
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9 | import eu.clarin.oai.provider.ext.Argument; |
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10 | import eu.clarin.oai.provider.ext.OAIErrorCode; |
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11 | import eu.clarin.oai.provider.ext.OAIOutputStream; |
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12 | import eu.clarin.oai.provider.ext.RepositoryAdapter; |
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13 | import eu.clarin.oai.provider.ext.Verb; |
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14 | import eu.clarin.oai.provider.ext.VerbContext; |
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15 | import eu.clarin.oai.provider.ext.OAIOutputStream.NamespaceDecl; |
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16 | |
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17 | final class VerbListSets extends Verb { |
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18 | private static final Argument[] ARGUMENTS = { |
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19 | DefaultArguments.RESUMPTIONTOKEN |
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20 | }; |
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21 | private static final List<NamespaceDecl> NS_DECLS_DC = Arrays.asList( |
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22 | new NamespaceDecl(MetadataConstants.NS_OAI_DC, "oai_dc", |
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23 | MetadataConstants.NS_OAI_DC_SCHEMA_LOCATION), |
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24 | new NamespaceDecl(MetadataConstants.NS_DC, null)); |
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25 | |
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26 | @Override |
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27 | public String getName() { |
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28 | return "ListSets"; |
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29 | } |
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30 | |
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31 | @Override |
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32 | public Argument[] getArguments() { |
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33 | return ARGUMENTS; |
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34 | } |
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35 | |
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36 | @Override |
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37 | public void process(VerbContext ctx) throws OAIException { |
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38 | logger.debug("process LIST-SETS"); |
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39 | |
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40 | RepositoryAdapter repository = ctx.getRepository(); |
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41 | Set<SetSpecDesc> setDescs = repository.getSetSpecs(); |
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42 | if (repository.isUsingSets()) { |
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43 | OAIOutputStream out = ctx.getOutputStream(); |
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44 | out.writeStartElement("ListSets"); |
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45 | for (SetSpecDesc setSpec : setDescs) { |
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46 | out.writeStartElement("set"); |
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47 | out.writeStartElement("setSpec"); |
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48 | out.writeCharacters(setSpec.getId()); |
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49 | out.writeEndElement(); // setSpec element |
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50 | out.writeStartElement("setName"); |
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51 | out.writeCharacters(setSpec.getName()); |
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52 | out.writeEndElement(); // setName element |
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53 | if (setSpec.getDescription() != null) { |
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54 | out.writeStartElement("setDescription"); |
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55 | out.writeStartElement(MetadataConstants.NS_OAI_DC, "dc", |
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56 | NS_DECLS_DC); |
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57 | out.writeStartElement(MetadataConstants.NS_OAI_DC, |
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58 | "description"); |
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59 | out.writeCharacters(setSpec.getDescription()); |
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60 | out.writeEndElement(); // description element |
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61 | out.writeEndElement(); // dc element |
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62 | out.writeEndElement(); // setDescription element |
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63 | } |
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64 | out.writeEndElement(); // set element |
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65 | } |
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66 | out.writeEndElement(); // ListSets element |
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67 | out.close(); |
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68 | } else { |
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69 | ctx.addError(OAIErrorCode.NO_SET_HIERARCHY, |
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70 | "This repository does not support sets"); |
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71 | } |
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72 | } |
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73 | |
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74 | } // class VerbListSets |
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