private static Date parseDate()

in hugegraph-loader/src/main/java/org/apache/hugegraph/loader/util/DataTypeUtil.java [154:210]
49 lines of code
12 McCabe index (conditional complexity)

    private static Date parseDate(String key, InputSource source, Object value) {
        List<String> extraDateFormats = null;
        String dateFormat = null;
        String timeZone = null;

        switch (source.type()) {
            case KAFKA:
                KafkaSource kafkaSource = (KafkaSource) source;
                extraDateFormats = kafkaSource.getExtraDateFormats();
                dateFormat = kafkaSource.getDateFormat();
                timeZone = kafkaSource.getTimeZone();
                break;
            case JDBC:
                /*
                 * Warn: it uses system default timezone,
                 * should we think a better way to compatible differ timezone people?
                 */
                long timestamp = 0L;
                if (value instanceof Date) {
                    timestamp = ((Date) value).getTime();
                } else if (value instanceof LocalDateTime) {
                    timestamp = ((LocalDateTime) value).atZone(ZoneId.systemDefault())
                                                       .toInstant()
                                                       .toEpochMilli();
                }
                value = new Date(timestamp);
                break;
            case HDFS:
            case FILE:
                FileSource fileSource = (FileSource) source;
                dateFormat = fileSource.dateFormat();
                timeZone = fileSource.timeZone();
                break;
            default:
                throw new IllegalArgumentException("Date format source " +
                                                   source.getClass().getName() + " not supported");
        }

        if (extraDateFormats == null || extraDateFormats.isEmpty()) {
            return parseDate(key, value, dateFormat, timeZone);
        }

        Set<String> allDateFormats = new HashSet<>(extraDateFormats);
        allDateFormats.add(dateFormat);

        int size = allDateFormats.size();
        for (String df : allDateFormats) {
            try {
                return parseDate(key, value, df, timeZone);
            } catch (Exception e) {
                if (--size <= 0) {
                    throw e;
                }
            }
        }
        return parseDate(key, value, dateFormat, timeZone);
    }