public void prepare()

in core/src/main/java/org/apache/stormcrawler/indexing/AbstractIndexerBolt.java [134:183]
41 lines of code
6 McCabe index (conditional complexity)

    public void prepare(
            Map<String, Object> conf, TopologyContext context, OutputCollector collector) {

        String mdF = ConfUtils.getString(conf, metadataFilterParamName);
        if (StringUtils.isNotBlank(mdF)) {
            // split it in key value
            int equals = mdF.indexOf('=');
            if (equals != -1) {
                String key = mdF.substring(0, equals);
                String value = mdF.substring(equals + 1);
                filterKeyValue = new String[] {key.trim(), value.trim()};
            } else {
                LOG.error("Can't split into key value : {}", mdF);
            }
        }

        fieldNameForText = ConfUtils.getString(conf, textFieldParamName);

        maxLengthText = ConfUtils.getInt(conf, textLengthParamName, -1);

        fieldNameForURL = ConfUtils.getString(conf, urlFieldParamName);

        canonicalMetadataName = ConfUtils.getString(conf, canonicalMetadataParamName);

        final Pattern indexValuePattern = Pattern.compile("\\[(\\d+)\\]");

        for (String mapping : ConfUtils.loadListFromConf(metadata2fieldParamName, conf)) {
            int equals = mapping.indexOf('=');
            String key, value;
            if (equals != -1) {
                key = mapping.substring(0, equals).trim();
                value = mapping.substring(equals + 1).trim();
            } else {
                mapping = mapping.trim();
                key = mapping;
                value = null;
            }
            int index = -1;
            Matcher match = indexValuePattern.matcher(key);
            if (match.find()) {
                index = Integer.parseInt(match.group(1));
                key = key.substring(0, match.start());
            }
            metadata2field.add(new Key(key, index, value));
            LOG.info("Mapping key {} to field {}", key, value);
        }

        ignoreEmptyFields =
                ConfUtils.getBoolean(conf, ignoreEmptyFieldValueParamName, ignoreEmptyFields);
    }