+/** \brief transforms RPN query to CQL output stream (re-entrant)
+ \param ct CQL transform handle
+ \param addinfo for additional error info
+ \param pr print function
+ \param client_data opaque data to be passed to print handler
+ \param q RPN Query
+ \retval 0 success
+ \retval !=0 failure (error code)
+ */
+YAZ_EXPORT
+int cql_transform_rpn2cql_stream_r(cql_transform_t ct,
+ WRBUF addinfo,
+ void (*pr)(const char *buf,
+ void *client_data),
+ void *client_data,
+ Z_RPNQuery *q);
+
+
+/** \brief transforms RPN query to CQL output stream (NOT re-entrant)