}.register();
    }

    public void test_integer() {
        final DocBoostMatcher docBoostMatcher = new DocBoostMatcher();
        docBoostMatcher.setBoostExpression("10");
        docBoostMatcher.setMatchExpression("data1 > 10");

        final Map<String, Object> map = new HashMap<String, Object>();

        assertTrue(0.0f == docBoostMatcher.getValue(map));

        map.put("data1", 20);

    }

    /**
     * Sets the match expression used to determine if documents should be boosted.
     *
     * @param expression the match expression string
     */
    public void setMatchExpression(final String expression) {
        matchExpression = expression;
    }