@Override
public DataBag exec(Tuple input) throws IOException {
if (input == null || input.size() == 0) {
return null;
}
try {
DataByteArray dba = null;
try {
dba = (DataByteArray) input.get(0);
} catch (ExecException e) {
logger.error("Error in reading field:", e);
throw e;
}
DocumentWrapper dm = null;
try {
dm = DocumentWrapper.parseFrom(dba.get());
} catch (Exception e) {
logger.error("Error in reading ByteArray to DocumentMetadata:", e);
throw e;
}
DataBag ret = new DefaultDataBag();
DataByteArray metadata = new DataByteArray(dm.getDocumentMetadata().toByteArray());
List<Author> authors = dm.getDocumentMetadata().getBasicMetadata().getAuthorList();
for (int i = 0; i < authors.size(); i++) {
String sname = authors.get(i).getSurname();
Object[] to = new Object[] {sname, metadata, i};
Tuple t = TupleFactory.getInstance().newTuple(Arrays.asList(to));
ret.add(t);
}
return ret;
} catch (Exception e) {
logger.error("Error in processing input row:", e);
throw new IOException(
"Caught exception processing input row:\n" + StackTraceExtractor.getStackTrace(e));
}
}
@Override
public Tuple exec(Tuple input) throws IOException {
myreporter = PigStatusReporter.getInstance();
if (input == null || input.size() == 0) {
return null;
}
try {
DataByteArray dba = null;
DocumentMetadata dm = null;
String title = null;
String doi = null;
String year = null;
try {
dba = (DataByteArray) input.get(0);
} catch (Exception e) {
myreporter.getCounter("extraction problems", "DataByteArray from tuple");
return null;
}
try {
dm = DocumentWrapper.parseFrom(dba.get()).getDocumentMetadata();
} catch (Exception e) {
myreporter.getCounter("extraction problems", "document metadata");
return null;
}
try {
for (TextWithLanguage twl : dm.getBasicMetadata().getTitleList()) {
if (twl.getLanguage().toLowerCase().startsWith("en")) {
title = twl.getText();
break;
}
}
if (title == null) {
title = dm.getBasicMetadata().getTitle(0).getText();
}
if (title != null && !title.trim().isEmpty()) {
title = DiacriticsRemover.removeDiacritics(title);
title = title.replaceAll("[^A-Za-z0-9\\-_]", " ").replaceAll("\\s++", " ").trim();
}
} catch (Exception e) {
} finally {
if (title == null || title.trim().isEmpty()) {
myreporter.getCounter("extraction problems", "title extraction");
return null;
}
}
try {
doi = dm.getBasicMetadata().getDoi().replaceAll("\\s++", " ").trim();
} catch (Exception e) {
} finally {
if (doi == null || doi.trim().isEmpty()) {
myreporter.getCounter("extraction problems", "doi extraction");
return null;
}
}
try {
year = dm.getBasicMetadata().getYear().replaceAll("\\s++", " ").trim();
} catch (Exception e) {
} finally {
if (year == null || year.trim().isEmpty()) {
myreporter.getCounter("extraction problems", "year extraction");
return null;
}
}
Tuple t = TupleFactory.getInstance().newTuple();
t.append(doi);
t.append(year);
t.append(title);
return t;
} catch (Exception e) {
logger.debug(StackTraceExtractor.getStackTrace(e));
throw new IOException(e);
}
}
