+enum ssm_type {
+ ssmt_bool, /* a boolean value that doesn't requires a SPARQL FILTER */
+ ssmt_num, /* a numeric value that requires a SPARQL FILTER */
+ ssmt_str, /* a string value that requieres a SPARQL FILTER */
+ ssmt_fts, /* a string value that will be queried with SPARQL 'fts:match' */
+ ssmt_date /* date values are handled in a special map function map_daterange() */
+};
+