Query objects represents queries.

     ZOOM_query ZOOM_query_create(void);

     void ZOOM_query_destroy(ZOOM_query q);

     int ZOOM_query_prefix(ZOOM_query q, const char *str);

     int ZOOM_query_cql(ZOOM_query s, const char *str);

     int ZOOM_query_sortby(ZOOM_query q, const char *criteria);
   

Create query objects using ZOOM_query_create and destroy them by calling ZOOM_query_destroy. RPN-queries can be specified in PQF notation by using the function ZOOM_query_prefix. The ZOOM_query_cql specifies a CQL query to be sent to the server/target. More query types will be added in future versions of YAZ, such as CCL to RPN-mapping, native CCL query, etc. In addition to a search, a sort criteria may be set. Function ZOOM_query_sortby specifies a sort criteria using the same string notation for sort as offered by the YAZ client.