LOGGER.finer("contains feature: " + filter.evaluate(testFeature));
assertTrue(filter.evaluate(testFeature));
filter = fac.dwithin(left, right, 2, "m");
LOGGER.finer(filter.toString());
LOGGER.finer("contains feature: " + filter.evaluate(testFeature));
assertFalse(filter.evaluate(testFeature));
right = new LiteralExpressionImpl(null);
filter = fac.dwithin(left, right, 2, "m");
LOGGER.finer(filter.toString());