root/gsdl/trunk/runtime-src/src/oaiservr/metaformat.cpp @ 18896

Revision 18896, 5.7 KB (checked in by kjdon, 11 years ago)

convert CoverageSpatial to Spatial. Just deletes anything before the . This may not be enough in future if sets validly have

  • Property svn:keywords set to Author Date Id Revision
Line 
1#include <fstream>
2#include "metaformat.h"
3#include "gsdltools.h"
4#include "gsdlunicode.h"
5#include "recptprototools.h"
6
7
8metaformat::metaformat()
9{
10}
11
12text_t metaformat::get_mapping(const text_t &collection, const text_t &collectionField)
13{
14  if (this->oaiConfigure == NULL) {
15    return "";
16  }
17
18  return this->oaiConfigure->getMapping(collection, collectionField, this->formatName());
19}
20
21void metaformat::output_item(ostream &output, outconvertclass &outconvert,
22                 bool &headerDone, const text_t &label,
23                 const text_tarray &values)
24{
25
26  if (!headerDone && (values.size() > 0)) {
27    this->output_metadata_header(output);
28    headerDone = true;
29  }
30
31  for (int item = 0; item < values.size(); ++item) {
32    if (this->oaiConfigure->getOAIVersion() >= 200) { // TODO: GRB: This code may need to be subclassed by dc for 200 and later...
33      output << outconvert << "        <" << this->formatPrefix() << ":" << label << ">" << xml_safe(values[item]) << "</" << this->formatPrefix() << ":" << label << ">\n";
34    }
35    else {
36      output << outconvert << "        <" << label << ">" << xml_safe(values[item]) << "</" << label << ">\n";
37    }
38  }
39}
40
41bool metaformat::scan_metadata(ostream &output, const text_t &collection, ResultDocInfo_t &docInfo,
42                   bool doOutput)
43{
44  bool headerDone = false;
45  MetadataInfo_tmap::iterator here = docInfo.metadata.begin();
46  MetadataInfo_tmap::iterator end = docInfo.metadata.end();
47
48  utf8outconvertclass utf8convert; // we want to output metadata in utf8
49
50  // metaItem is used initially to identify the rfc1807 (etc) metadata items. It is
51  // then used to hold the name of the metadata item, such as "title" or "subject".
52  text_t metaItem;
53  text_t::const_iterator start, last; // Use two iterators to go through metaItem
54
55  while (here != end) {
56    start = last = here->first.begin();
57
58    if (here->first.size() < this->formatPrefix().size() ||
59    here->first[this->formatPrefix().size()] != '.') {
60      metaItem == "";
61    }
62    else {
63      last += this->formatPrefix().size(); // Move last so that it is at the
64      // '.'
65      metaItem = substr(start, last);          // Gets the substring starting at start and going up to (but
66                                               // not including) last. This should be "dc" (for example)
67    }
68
69    if (metaItem == this->formatPrefix()) {
70      metaItem = substr(last+1, here->first.end()); // Get the rest of the metadata tag (it's name) but without the '.'
71      // remove xxx^ eg Coverage^Spatial becomes spatial
72      // this is for qualified dublin core. May affect other sets later if they
73      // validly have ^ in them.
74      text_t::iterator hat = findchar(metaItem.begin(), metaItem.end(), '^');
75      if (hat != metaItem.end()) {
76    metaItem = substr(hat+1, metaItem.end());
77      }
78      lc(metaItem.begin(),metaItem.begin()+1); // We want lowercase, but some of the fields in qualified dublin core have internal upper case, eg instructionalMethod. So we assume that lowercasing the first letter is enough
79      if (doOutput) {
80    if (this->is_valid_element(metaItem)) {
81     
82      this->output_item(output, utf8convert, headerDone, metaItem, here->second.values);
83    }
84      }
85      else {
86    if (here->second.values.size() > 0) {
87      return true;
88    }
89      }
90    } 
91    else {
92      text_t mapTo = this->get_mapping(collection, here->first);
93      if (mapTo != "") {
94    // Do we actually want to do anything here? Doesn't getting here imply that this
95    // particular metadata is stuff we don't want?
96    if (doOutput) {
97      if (this->is_valid_element(mapTo)) {
98        this->output_item(output, utf8convert, headerDone, mapTo, here->second.values);
99      }
100    }
101    else {
102      if (here->second.values.size() > 0) {
103        return true;
104      }
105    }
106      }
107    }
108
109    ++here;
110  }
111
112  if (!doOutput) {
113    return false;
114  }
115 
116  if (headerDone) {
117    this->output_metadata_footer(output);
118  }
119 
120  return headerDone;
121}
122
123
124bool metaformat::is_available(const text_t &collection, ResultDocInfo_t &docInfo)
125{
126  ofstream o("dummy", ios::out);
127  return this->scan_metadata(o, collection, docInfo, false);
128}
129
130bool metaformat::is_valid_element(text_t &meta_name)
131{
132  if (elementSet.count(meta_name)==1) return true;
133  return false;
134 
135}
136
137bool metaformat::output_metadata(ostream &output, const text_t &collection, ResultDocInfo_t &docInfo)
138{
139  return this->scan_metadata(output, collection, docInfo, true);
140}
141
142bool metaformat::output_record(ostream &output, recptproto *protocol, const text_t &collection,
143                   const text_t &OID)
144{
145  FilterResponse_t response;
146  text_tset        metadata;
147  ofstream         logout("oai.log", ios::app);
148
149  // get the document information
150  if (!get_info(OID, collection, "", metadata, false, protocol, response, logout)) {
151    // TODO: error, bad request
152    //   cerr << "Bad identifier or protocol " << OID << endl;
153    return false;
154  }
155
156  // check to see if it's a classifier
157  text_t childHead;
158  //  int oaiVersion = this->oaiConfigure->getOAIVersion();
159  text_t::const_iterator start = OID.begin();
160  text_t::const_iterator here  = OID.begin();
161  here += 2;
162  childHead = substr(start, here);
163
164  // if it isn't a document, kill it now
165  if (childHead == "CL") {
166    //    cerr << "Not a document" << endl;
167    return false;
168  }
169
170  // output record header
171  output << "<record>\n";
172
173  // output header part of oai response
174  output << "<header>" << endl;
175  output << "  <identifier>" << OID << "</identifier>" << endl;
176  // TODO: add modified date
177
178  output << "</header>" << endl;
179
180  // output metadata part of oai response
181  this->output_metadata(output, collection, response.docInfo[0]);
182
183  // output the description of the document
184  //  output << "<about>\n";
185  //  output << "</about>\n";
186
187  // close record
188  output << "</record>\n";
189   
190  return true;
191}
Note: See TracBrowser for help on using the browser.