@Override public Object visit(PropertyIsNull filter, Object extraData) { checkExpressionIsProperty(filter.getExpression()); StringWriter output = asStringWriter(extraData); ExpressionToSolr visitor = new ExpressionToSolr(); PropertyName propertyName = (PropertyName) filter.getExpression(); output.append("-"); propertyName.accept(visitor, output); output.append(":[* TO *]"); return output; }
@Test public void testNullFilter() throws Exception { PropertyIsNull nullFilter = ff.isNull(ff.property("measurement/result")); Filter unrolled = (Filter) nullFilter.accept(visitor, null); assertTrue(unrolled instanceof PropertyIsNull); assertNotSame(nullFilter, unrolled); PropertyIsNull unmapped = (PropertyIsNull) unrolled; Expression unmappedAtt = unmapped.getExpression(); assertTrue(unmappedAtt instanceof PropertyName); assertEquals("results_value", ((PropertyName) unmappedAtt).getPropertyName()); }
public Object visit(PropertyIsNull filter, Object notUsed) { return visitNullNil(filter, filter.getExpression()); }