private FieldType mapping()

in mr/src/main/java/org/elasticsearch/hadoop/serialization/ScrollReader.java [1077:1133]
50 lines of code
14 McCabe index (conditional complexity)

    private FieldType mapping(String fieldMapping, Parser parser) {
        FieldType esType = esMapping.get(fieldMapping);

        if (esType != null) {
            return esType;
        }

        // fall back to JSON
        Token currentToken = parser.currentToken();
        if (!currentToken.isValue()) {
            // nested type
            return FieldType.OBJECT;
        }

        // If we're currently parsing a metadata section, return string types for primitive fields
        if (inMetadataSection) {
            return FieldType.STRING;
        }

        switch (currentToken) {
        case VALUE_NULL:
            esType = FieldType.NULL;
            break;
        case VALUE_BOOLEAN:
            esType = FieldType.BOOLEAN;
            break;
        case VALUE_STRING:
            esType = FieldType.STRING;
            break;
        case VALUE_NUMBER:
            NumberType numberType = parser.numberType();
            switch (numberType) {
            case INT:
                esType = FieldType.INTEGER;
                break;
            case LONG:
                esType = FieldType.LONG;
                break;
            case FLOAT:
                esType = FieldType.FLOAT;
                break;
            case DOUBLE:
                esType = FieldType.DOUBLE;
                break;
            case BIG_DECIMAL:
                throw new UnsupportedOperationException();
            case BIG_INTEGER:
                throw new UnsupportedOperationException();
            default:
                break;
            }
            break;
        default:
            break;
        }
        return esType;
    }