Filter funtionFilter = createFunctionFilter();
Filter geomFilter=ff.bbox(geomAtt, 10.0, 20.0, 10.0, 20.0, "");
Filter orFilter = ff.or( funtionFilter, geomFilter );
visitor=new PostPreProcessFilterSplittingVisitor(new FilterCapabilities(), null, null);
orFilter.accept(visitor, null);
assertEquals(Filter.INCLUDE, visitor.getFilterPre());
assertEquals(orFilter, visitor.getFilterPost());
visitor=new PostPreProcessFilterSplittingVisitor(simpleLogicalCaps, null, null);