1 | #include "metaformatsaction.h"
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2 | #include "metaformat.h"
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3 | #include "oaitools.h"
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4 |
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5 | bool metaformatsaction::validateAction(recptproto *protocol, oaiargs ¶ms)
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6 | {
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7 | int params_size = params.getSize();
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8 |
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9 | // Remove any parameters that aren't valid for this action
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10 | text_tmap::const_iterator param_iterator = params.begin();
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11 | while (param_iterator != params.end())
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12 | {
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13 | if (param_iterator->first != "verb" &&
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14 | param_iterator->first != "identifier")
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15 | {
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16 | params.erase(param_iterator->first);
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17 | }
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18 |
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19 | param_iterator++;
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20 | }
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21 |
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22 | int numArgs = 1; // the number of expected arguments
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23 |
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24 | // increase the number of expected arguments if the optional 'identifier' argument
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25 | // is given
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26 | if (params["identifier"] != "") {
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27 | ++numArgs;
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28 | }
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29 |
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30 | // If the total number of params isn't equal to the number of valid
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31 | // args (i.e. we have an arg but it isn't the identifier), throw an error
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32 | if((params_size != numArgs)){
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33 | this->errorType = "badArgument";
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34 | return false;
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35 | }
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36 |
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37 | // Variables to hold identifier in Greenstone format
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38 | text_t docID = params["identifier"];
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39 | text_t collection = "";
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40 |
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41 | // The following two variables are used solely by the get_info() function call to test if
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42 | // the identifier supplied is an actual document. If it isn't, we need to throw an exception.
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43 | const text_tset metadata;
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44 |
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45 | // Check for the existence, etc. of the record if an identifier is given.
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46 | if (docID != "") {
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47 | oaiclassifier::toGSDL(collection, docID);
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48 |
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49 | // Only throw an error if we're using v2.0.
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50 | // v1.1 should simply return a response without a metadataFormat container. 1.1
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51 | // should still set the errorType so we know that the error was encountered
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52 |
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53 | // the information retrieved here is retained for the output_content function below
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54 | if (!get_info(docID, collection, "", metadata, false, protocol, this->gsdlResponse, cerr)){
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55 | this->errorType = "idDoesNotExist";
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56 | if(this->configuration->getOAIVersion() >= 200) {
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57 | return false;
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58 | }
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59 | }
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60 | }
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61 | return true;
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62 | }
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63 |
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64 | bool metaformatsaction::output_content(ostream &output, recptproto *protocol, oaiargs ¶ms)
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65 | {
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66 | // if an identifier parameter is being used, then respond to it - currently we reject anything other
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67 | // than dublin core (unqualified)
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68 | //
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69 | // TODO: only return the selected identifier (if given) and don't validate the entry; just
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70 | // return nothing if an invalid or unknown metadata format is given
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71 |
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72 | // give the required xml response
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73 |
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74 | text_t gsdlId = params["identifier"];
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75 | text_t gsdlCollect;
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76 |
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77 | // convert record identifier into GSDL format from OAI
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78 | if (gsdlId != "") {
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79 | oaiclassifier::toGSDL(gsdlCollect, gsdlId);
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80 | }
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81 |
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82 | metaformat_map::iterator here = this->formats->begin();
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83 | metaformat_map::iterator end = this->formats->end();
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84 |
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85 | // v1.1 should check that the id - if supplied - didn't cause an error. If it did,
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86 | // don't output the metadataFormat tags. OAI v2.0 should already have bailed.
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87 | if(this->errorType != "idDoesNotExist"){
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88 | while (here != end) { // Loop through the repository's supported metadata formats
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89 | bool doOutput = true;
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90 |
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91 | // if we were given an identifier, then check if it supports the metadata format in question
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92 | if (gsdlId != "") {
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93 | doOutput = here->second.get_class()->is_available(gsdlCollect, this->gsdlResponse.docInfo[0]);
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94 | }
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95 |
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96 | if (doOutput) {
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97 | output << " <metadataFormat>" << endl;
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98 | here->second.get_class()->output_formatdata(output);
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99 | output << " </metadataFormat>\n";
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100 | }
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101 | ++here;
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102 | }
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103 | }
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104 |
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105 | return true;
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106 | }
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107 |
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108 | void metaformatsaction::setConfiguration(oaiconfig *configuration)
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109 | {
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110 | this->configuration = configuration;
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111 |
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112 | metaformat_map::iterator here = this->formats->begin();
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113 | metaformat_map::iterator end = this->formats->end();
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114 | while (here != end) {
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115 | here->second.set_configuration((oaiconfig *) configuration);
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116 | ++here;
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117 | }
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118 | }
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119 |
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