/**
* Convert a JSONObject containing a bibJSON entry to a BibEntry
*
* @param bibJsonEntry The JSONObject to convert
* @return the converted BibEntry
*/
public BibEntry parseBibJSONtoBibtex(JSONObject bibJsonEntry, String keywordSeparator) {
// Fields that are directly accessible at the top level BibJson object
String[] singleFieldStrings = {
FieldName.YEAR, FieldName.TITLE, FieldName.ABSTRACT, FieldName.MONTH
};
// Fields that are accessible in the journal part of the BibJson object
String[] journalSingleFieldStrings = {FieldName.PUBLISHER, FieldName.NUMBER, FieldName.VOLUME};
BibEntry entry = new BibEntry();
entry.setType("article");
// Authors
if (bibJsonEntry.has("author")) {
JSONArray authors = bibJsonEntry.getJSONArray("author");
List<String> authorList = new ArrayList<>();
for (int i = 0; i < authors.length(); i++) {
if (authors.getJSONObject(i).has("name")) {
authorList.add(authors.getJSONObject(i).getString("name"));
} else {
LOGGER.info("Empty author name.");
}
}
entry.setField(FieldName.AUTHOR, String.join(" and ", authorList));
} else {
LOGGER.info("No author found.");
}
// Direct accessible fields
for (String field : singleFieldStrings) {
if (bibJsonEntry.has(field)) {
entry.setField(field, bibJsonEntry.getString(field));
}
}
// Page numbers
if (bibJsonEntry.has("start_page")) {
if (bibJsonEntry.has("end_page")) {
entry.setField(
FieldName.PAGES,
bibJsonEntry.getString("start_page") + "--" + bibJsonEntry.getString("end_page"));
} else {
entry.setField(FieldName.PAGES, bibJsonEntry.getString("start_page"));
}
}
// Journal
if (bibJsonEntry.has("journal")) {
JSONObject journal = bibJsonEntry.getJSONObject("journal");
// Journal title
if (journal.has("title")) {
entry.setField(FieldName.JOURNAL, journal.getString("title"));
} else {
LOGGER.info("No journal title found.");
}
// Other journal related fields
for (String field : journalSingleFieldStrings) {
if (journal.has(field)) {
entry.setField(field, journal.getString(field));
}
}
} else {
LOGGER.info("No journal information found.");
}
// Keywords
if (bibJsonEntry.has("keywords")) {
JSONArray keywords = bibJsonEntry.getJSONArray("keywords");
LinkedHashSet<String> keywordList = new LinkedHashSet<>();
for (int i = 0; i < keywords.length(); i++) {
if (!keywords.isNull(i)) {
keywordList.add(keywords.getString(i));
}
}
entry.putKeywords(keywordList, keywordSeparator);
}
// Identifiers
if (bibJsonEntry.has("identifier")) {
JSONArray identifiers = bibJsonEntry.getJSONArray("identifier");
for (int i = 0; i < identifiers.length(); i++) {
String type = identifiers.getJSONObject(i).getString("type");
if ("doi".equals(type)) {
entry.setField(FieldName.DOI, identifiers.getJSONObject(i).getString("id"));
} else if ("pissn".equals(type)) {
entry.setField(FieldName.ISSN, identifiers.getJSONObject(i).getString("id"));
} else if ("eissn".equals(type)) {
entry.setField(FieldName.ISSN, identifiers.getJSONObject(i).getString("id"));
}
}
}
// Links
if (bibJsonEntry.has("link")) {
JSONArray links = bibJsonEntry.getJSONArray("link");
for (int i = 0; i < links.length(); i++) {
if (links.getJSONObject(i).has("type")) {
String type = links.getJSONObject(i).getString("type");
if ("fulltext".equals(type) && links.getJSONObject(i).has("url")) {
entry.setField(FieldName.URL, links.getJSONObject(i).getString("url"));
}
}
}
}
return entry;
}
