public static Filter newFilter( QueryParseContext parseContext, String fieldPattern, String filterName) { final FieldMappers fieldNamesMappers = parseContext.mapperService().indexName(FieldNamesFieldMapper.NAME); final FieldNamesFieldMapper fieldNamesMapper = fieldNamesMappers == null ? null : (FieldNamesFieldMapper) fieldNamesMappers.mapper(); MapperService.SmartNameObjectMapper smartNameObjectMapper = parseContext.smartObjectMapper(fieldPattern); if (smartNameObjectMapper != null && smartNameObjectMapper.hasMapper()) { // automatic make the object mapper pattern fieldPattern = fieldPattern + ".*"; } List<String> fields = parseContext.simpleMatchToIndexNames(fieldPattern); if (fields.isEmpty()) { // no fields exists, so we should not match anything return Queries.MATCH_NO_FILTER; } MapperService.SmartNameFieldMappers nonNullFieldMappers = null; XBooleanFilter boolFilter = new XBooleanFilter(); for (String field : fields) { MapperService.SmartNameFieldMappers smartNameFieldMappers = parseContext.smartFieldMappers(field); if (smartNameFieldMappers != null) { nonNullFieldMappers = smartNameFieldMappers; } Filter filter = null; if (fieldNamesMapper != null && fieldNamesMapper.enabled()) { final String f; if (smartNameFieldMappers != null && smartNameFieldMappers.hasMapper()) { f = smartNameFieldMappers.mapper().names().indexName(); } else { f = field; } filter = fieldNamesMapper.termFilter(f, parseContext); } // if _field_names are not indexed, we need to go the slow way if (filter == null && smartNameFieldMappers != null && smartNameFieldMappers.hasMapper()) { filter = smartNameFieldMappers.mapper().rangeFilter(null, null, true, true, parseContext); } if (filter == null) { filter = new TermRangeFilter(field, null, null, true, true); } boolFilter.add(filter, BooleanClause.Occur.SHOULD); } // we always cache this one, really does not change... (exists) // its ok to cache under the fieldName cacheKey, since its per segment and the mapping applies // to this data on this segment... Filter filter = parseContext.cacheFilter(boolFilter, new CacheKeyFilter.Key("$exists$" + fieldPattern)); filter = wrapSmartNameFilter(filter, nonNullFieldMappers, parseContext); if (filterName != null) { parseContext.addNamedFilter(filterName, filter); } return filter; }