* @throws NumberFormatException if the value cannot be parsed as an Integer
     */
    public static Integer getInteger(final Map<String, Object> map, final String key) {
        return getInteger(map, key, null);
    }

    /**
     * Gets an Integer value from the map with a default value.
     *
     * @param map The source map

        map.put("string", "789");

        assertEquals(Integer.valueOf(123), MapValueExtractor.getInteger(map, "int"));
        assertEquals(Integer.valueOf(456), MapValueExtractor.getInteger(map, "long"));
        assertEquals(Integer.valueOf(789), MapValueExtractor.getInteger(map, "string"));
        assertNull(MapValueExtractor.getInteger(map, "missing"));
    }

    @Test
    public void testGetDouble() {

    private final int maxAnalyzedContentLength;

    /**
     * Constructor.
     */
    public DefaultContentsParser() {
        maxAnalyzedContentLength = Integer.getInteger("fess.suggest.max.analyzed.content.length", 1000);
    }

    @Override
    public SuggestItem parseSearchWords(final String[] words, final String[][] readings, final String[] fields, final String[] tags,