1 | package eu.clarin.cmdi.mdservice.model; |
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2 | |
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3 | import java.io.IOException; |
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4 | import java.io.InputStream; |
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5 | |
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6 | import javax.xml.transform.TransformerException; |
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7 | |
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8 | import eu.clarin.cmdi.mdservice.action.Admin; |
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9 | import eu.clarin.cmdi.mdservice.action.MDTransformer; |
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10 | import eu.clarin.cmdi.mdservice.action.NoStylesheetException; |
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11 | |
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12 | /** |
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13 | * Currently not used! Everything is done directly in MDRepoProxyAction. |
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14 | * |
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15 | * Meant as Class holding the result of a query (parentQuery) |
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16 | * This is a "passive" object, depending on its parentQuery |
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17 | * which is setting the resultStream in its execute-method |
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18 | * @author vronk |
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19 | * |
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20 | */ |
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21 | public class Result { |
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22 | |
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23 | /** |
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24 | * available formats |
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25 | */ |
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26 | public static String XML = "xml"; |
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27 | public static String HTML = "html"; |
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28 | public static String HTMLSNIPPET = "htmlsnippet"; |
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29 | |
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30 | private Query parentQuery; |
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31 | |
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32 | /** |
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33 | * holds the stream receiving data from the provider (MDRepository...) |
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34 | */ |
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35 | private InputStream rawresult; |
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36 | |
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37 | public Result (Query q) { |
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38 | parentQuery = q; |
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39 | // transformed_out = new ByteArrayOutputStream(); |
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40 | //setResultStream(new ByteArrayOutputStream()); |
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41 | } |
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42 | |
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43 | |
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44 | /** |
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45 | * this is the main method to get the formatted-result |
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46 | * precondition: the rawresult already arrived, ie parentQuery.execute() already issued |
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47 | * @param format is passed as the transkey to the transformer |
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48 | * @return the input stream with the formatted/transformed result |
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49 | * @throws IOException |
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50 | * @throws InterruptedException |
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51 | * @throws TransformerException |
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52 | * @throws NoStylesheetException |
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53 | */ |
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54 | public InputStream getResultStream(String format) throws IOException, InterruptedException, TransformerException, NoStylesheetException { |
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55 | String transformkey; |
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56 | |
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57 | if (format.equals(XML)) { |
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58 | return rawresult; |
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59 | } else { |
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60 | transformkey = parentQuery.getType() + "2" + format; |
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61 | Admin.notifyUser("transformkey: " + transformkey ); |
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62 | MDTransformer transformer = new MDTransformer(); |
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63 | transformer.setParams(MDTransformer.createParamsMap(transformkey)); |
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64 | return transformer.transformXML(rawresult);//, transformkey); |
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65 | } |
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66 | } |
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67 | |
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68 | /** |
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69 | * without format-parameter, you get the raw-data-stream (XML?) received from the provider |
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70 | * @return |
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71 | */ |
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72 | public InputStream getResultStream() { |
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73 | return rawresult; |
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74 | } |
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75 | |
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76 | public void getResultStream(String format, InputStream in) throws IOException, InterruptedException, TransformerException, NoStylesheetException { |
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77 | in = getResultStream(format); |
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78 | } |
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79 | |
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80 | |
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81 | public void setInputStream(InputStream in) { |
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82 | this.rawresult = in; |
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83 | } |
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84 | |
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85 | /** |
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86 | * a stub for a header to be returned with every result |
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87 | * not used yet |
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88 | * @return |
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89 | */ |
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90 | public String getHeader() { |
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91 | String header = ""; |
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92 | |
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93 | header = "<header>"; |
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94 | header += "<userquery>" + parentQuery.getQueryString() + "</userquery>"; |
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95 | header += "<xpathquery>" + parentQuery.toXPath() + "</xpathquery>"; |
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96 | header += "</header>"; |
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97 | |
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98 | |
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99 | return header; |
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100 | } |
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101 | |
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102 | } |
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