/**
* Parses a CSV header line and creates the corresponding resulting schema in the section (i.e.: a
* set of fields with positions)
*/
protected List<Field> parseHeaders(List<String[]> csvLines) {
Section section = sectionInstance.getSection();
String sectionId = section.getId();
String headers[] = csvLines.get(0);
log.trace("Headers for section " + sectionId + ": " + Arrays.toString(headers));
int nlines = csvLines.size();
for (int j = 0; j < headers.length; j++) {
String header = StringUtils.trimToNull(headers[j]);
if (header == null) {
// Empty header, let's remove all!
//
log.warn(i18n.msg("empty_column", j));
for (int i = 0; i < nlines; i++) {
String[] line = csvLines.get(i);
if (j == line.length)
// This happens sometime: the header has one extra-tab and the lines are OK
// we need to recraft the header only in that case
{
continue;
}
csvLines.set(i, (String[]) ArrayUtils.remove(line, j));
}
headers = csvLines.get(0);
j--; // Restart from this point, which is now the next column
continue;
}
log.trace("Working on header " + j + ":" + header);
Field field = section.getFieldByHeader(header, false);
if (field == null) {
throw new TabValidationException(
i18n.msg("unexpected_field_in_section_error", header, sectionId));
}
// Let's add a new real field on the basis of the header. The new field created gets its id
// from the
// original one in the schema, so it will have the "canonical" form, independently on what we
// found
// on the input (e.g.: upper case).
//
field = field.parseHeader(header, j, false);
sectionInstance.addField(field);
}
return sectionInstance.getFields();
}
