private void alternateField(
NamedList docSummaries, SolrParams params, Document doc, String fieldName) {
String alternateField = params.getFieldParam(fieldName, HighlightParams.ALTERNATE_FIELD);
if (alternateField != null && alternateField.length() > 0) {
IndexableField[] docFields = doc.getFields(alternateField);
List<String> listFields = new ArrayList<String>();
for (IndexableField field : docFields) {
if (field.binaryValue() == null) listFields.add(field.stringValue());
}
String[] altTexts = listFields.toArray(new String[listFields.size()]);
if (altTexts != null && altTexts.length > 0) {
Encoder encoder = getEncoder(fieldName, params);
int alternateFieldLen =
params.getFieldInt(fieldName, HighlightParams.ALTERNATE_FIELD_LENGTH, 0);
List<String> altList = new ArrayList<String>();
int len = 0;
for (String altText : altTexts) {
if (alternateFieldLen <= 0) {
altList.add(encoder.encodeText(altText));
} else {
altList.add(
len + altText.length() > alternateFieldLen
? encoder.encodeText(new String(altText.substring(0, alternateFieldLen - len)))
: encoder.encodeText(altText));
len += altText.length();
if (len >= alternateFieldLen) break;
}
}
docSummaries.add(fieldName, altList);
}
}
}
