public void postProcess(MappedFieldType fieldType) {
    if (uid != null) {
        switch (field) {
            case UidFieldMapper.NAME: addValue(field, uid.toString());
            case IdFieldMapper.NAME: addValue(field, uid.id());
            case TypeFieldMapper.NAME: addValue(field, uid.type());
        }
    }

    if (fieldsValues == null) {
        return;
    }
    List<Object> fieldValues = fieldsValues.get(fieldType.names().indexName());
    if (fieldValues == null) {
        return;
    }
    for (int i = 0; i < fieldValues.size(); i++) {
        fieldValues.set(i, fieldType.valueForSearch(fieldValues.get(i)));
    }
}
 

@Override
public Status needsField(FieldInfo fieldInfo) throws IOException {
    if (fieldInfo.name.equals(field)) {
        return Status.YES;
    }
    if (fieldInfo.name.equals(UidFieldMapper.NAME)) {
        if (TypeFieldMapper.NAME.equals(field) || IdFieldMapper.NAME.equals(field)) {
            return Status.YES;
        }
    }
    return Status.NO;
}
 

private static Map<String, MetadataFieldMapper.TypeParser> registerBuiltInMetadataMappers() {
    Map<String, MetadataFieldMapper.TypeParser> metadataMapperParsers = new LinkedHashMap<>();
    metadataMapperParsers.put(UidFieldMapper.NAME, new UidFieldMapper.TypeParser());
    metadataMapperParsers.put(IdFieldMapper.NAME, new IdFieldMapper.TypeParser());
    metadataMapperParsers.put(RoutingFieldMapper.NAME, new RoutingFieldMapper.TypeParser());
    metadataMapperParsers.put(IndexFieldMapper.NAME, new IndexFieldMapper.TypeParser());
    metadataMapperParsers.put(SourceFieldMapper.NAME, new SourceFieldMapper.TypeParser());
    metadataMapperParsers.put(TypeFieldMapper.NAME, new TypeFieldMapper.TypeParser());
    metadataMapperParsers.put(AllFieldMapper.NAME, new AllFieldMapper.TypeParser());
    metadataMapperParsers.put(TimestampFieldMapper.NAME, new TimestampFieldMapper.TypeParser());
    metadataMapperParsers.put(TTLFieldMapper.NAME, new TTLFieldMapper.TypeParser());
    metadataMapperParsers.put(VersionFieldMapper.NAME, new VersionFieldMapper.TypeParser());
    metadataMapperParsers.put(ParentFieldMapper.NAME, new ParentFieldMapper.TypeParser());
    return metadataMapperParsers;
}
 

public IdFieldMapper idFieldMapper() {
    return metadataMapper(IdFieldMapper.class);
}