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27 /* $Id: zoom.h,v 1.44 2007-01-12 21:03:30 adam Exp $ */
31 * \brief Header for ZOOM
35 #include <yaz/yconfig.h>
37 #define ZOOM_BEGIN_CDECL YAZ_BEGIN_CDECL
38 #define ZOOM_END_CDECL YAZ_END_CDECL
41 # define ZOOM_API(x) __declspec(dllexport) x __stdcall
43 # define ZOOM_API(x) x
48 /* ----------------------------------------------------------- */
49 /* the types we use */
51 typedef struct ZOOM_options_p *ZOOM_options;
52 typedef struct ZOOM_query_p *ZOOM_query;
53 typedef struct ZOOM_connection_p *ZOOM_connection;
54 typedef struct ZOOM_resultset_p *ZOOM_resultset;
55 typedef struct ZOOM_record_p *ZOOM_record;
56 typedef struct ZOOM_scanset_p *ZOOM_scanset;
57 typedef struct ZOOM_package_p *ZOOM_package;
59 typedef const char *(*ZOOM_options_callback)(void *handle, const char *name);
61 /* ----------------------------------------------------------- */
64 /* create connection, connect to host, if portnum is 0, then port is
65 read from host string (e.g. myhost:9821) */
66 ZOOM_API(ZOOM_connection)
67 ZOOM_connection_new (const char *host, int portnum);
69 /* create connection, don't connect, apply options */
70 ZOOM_API(ZOOM_connection)
71 ZOOM_connection_create (ZOOM_options options);
73 /* connect given existing connection */
75 ZOOM_connection_connect(ZOOM_connection c, const char *host,
78 /* destroy connection (close connection also) */
80 ZOOM_connection_destroy (ZOOM_connection c);
82 /* get/set option for connection */
83 ZOOM_API(const char *)
84 ZOOM_connection_option_get (ZOOM_connection c, const char *key);
86 ZOOM_API(const char *)
87 ZOOM_connection_option_getl (ZOOM_connection c, const char *key, int *lenp);
90 ZOOM_connection_option_set (ZOOM_connection c, const char *key,
94 ZOOM_connection_option_setl (ZOOM_connection c, const char *key,
95 const char *val, int len);
97 /* return error code (0 == success, failure otherwise). cp
98 holds error string on failure, addinfo holds addititional info (if any)
101 ZOOM_connection_error (ZOOM_connection c, const char **cp,
102 const char **addinfo);
105 ZOOM_connection_error_x (ZOOM_connection c, const char **cp,
106 const char **addinfo, const char **diagset);
108 /* returns error code */
110 ZOOM_connection_errcode (ZOOM_connection c);
111 /* returns error message */
112 ZOOM_API(const char *)
113 ZOOM_connection_errmsg (ZOOM_connection c);
114 /* returns additional info */
115 ZOOM_API(const char *)
116 ZOOM_connection_addinfo (ZOOM_connection c);
117 /* returns diagnostic set */
118 ZOOM_API(const char *)
119 ZOOM_connection_diagset (ZOOM_connection c);
120 /* translates error code into human-readable string */
121 ZOOM_API(const char *)
122 ZOOM_diag_str (int error);
124 #define ZOOM_ERROR_NONE 0
125 #define ZOOM_ERROR_CONNECT 10000
126 #define ZOOM_ERROR_MEMORY 10001
127 #define ZOOM_ERROR_ENCODE 10002
128 #define ZOOM_ERROR_DECODE 10003
129 #define ZOOM_ERROR_CONNECTION_LOST 10004
130 #define ZOOM_ERROR_INIT 10005
131 #define ZOOM_ERROR_INTERNAL 10006
132 #define ZOOM_ERROR_TIMEOUT 10007
133 #define ZOOM_ERROR_UNSUPPORTED_PROTOCOL 10008
134 #define ZOOM_ERROR_UNSUPPORTED_QUERY 10009
135 #define ZOOM_ERROR_INVALID_QUERY 10010
136 #define ZOOM_ERROR_CQL_PARSE 10011
137 #define ZOOM_ERROR_CQL_TRANSFORM 10012
138 #define ZOOM_ERROR_CCL_CONFIG 10013
139 #define ZOOM_ERROR_CCL_PARSE 10014
142 ZOOM_connection_last_event(ZOOM_connection cs);
144 #define ZOOM_EVENT_NONE 0
145 #define ZOOM_EVENT_CONNECT 1
146 #define ZOOM_EVENT_SEND_DATA 2
147 #define ZOOM_EVENT_RECV_DATA 3
148 #define ZOOM_EVENT_TIMEOUT 4
149 #define ZOOM_EVENT_UNKNOWN 5
150 #define ZOOM_EVENT_SEND_APDU 6
151 #define ZOOM_EVENT_RECV_APDU 7
152 #define ZOOM_EVENT_RECV_RECORD 8
153 #define ZOOM_EVENT_RECV_SEARCH 9
154 #define ZOOM_EVENT_END 10
156 /* ----------------------------------------------------------- */
159 /* create result set given a search */
160 ZOOM_API(ZOOM_resultset)
161 ZOOM_connection_search(ZOOM_connection, ZOOM_query q);
162 /* create result set given PQF query */
163 ZOOM_API(ZOOM_resultset)
164 ZOOM_connection_search_pqf(ZOOM_connection c, const char *q);
166 /* destroy result set */
168 ZOOM_resultset_destroy(ZOOM_resultset r);
170 /* result set option */
171 ZOOM_API(const char *)
172 ZOOM_resultset_option_get (ZOOM_resultset r, const char *key);
174 ZOOM_resultset_option_set (ZOOM_resultset r, const char *key, const char *val);
176 /* return size of result set (alias hit count AKA result count) */
178 ZOOM_resultset_size (ZOOM_resultset r);
180 /* retrieve records */
182 ZOOM_resultset_records (ZOOM_resultset r, ZOOM_record *recs,
183 size_t start, size_t count);
185 /* return record object at pos. Returns 0 if unavailable */
186 ZOOM_API(ZOOM_record)
187 ZOOM_resultset_record (ZOOM_resultset s, size_t pos);
189 /* like ZOOM_resultset_record - but never blocks .. */
190 ZOOM_API(ZOOM_record)
191 ZOOM_resultset_record_immediate (ZOOM_resultset s, size_t pos);
193 /* reset record cache for result set */
195 ZOOM_resultset_cache_reset(ZOOM_resultset r);
197 /* ----------------------------------------------------------- */
200 /* get record information, in a form given by type */
201 ZOOM_API(const char *)
202 ZOOM_record_get (ZOOM_record rec, const char *type, int *len);
206 ZOOM_record_destroy (ZOOM_record rec);
208 /* return copy of record */
209 ZOOM_API(ZOOM_record)
210 ZOOM_record_clone (ZOOM_record srec);
212 /* return error info (surrogate diagnostic) for record */
214 ZOOM_record_error(ZOOM_record rec, const char **msg,
215 const char **addinfo, const char **diagset);
217 /* ----------------------------------------------------------- */
220 /* create search object */
222 ZOOM_query_create(void);
225 ZOOM_query_destroy(ZOOM_query s);
228 ZOOM_query_cql(ZOOM_query s, const char *str);
229 /* CQL translated client-side into RPN: `conn' is optional for diagnostics */
231 ZOOM_query_cql2rpn(ZOOM_query s, const char *str, ZOOM_connection conn);
232 /* CCL translated client-side into RPN: `conn' is optional for diagnostics */
234 ZOOM_query_ccl2rpn(ZOOM_query s, const char *query_str,
236 int *ccl_error, const char **error_string, int *error_pos);
239 ZOOM_query_prefix(ZOOM_query s, const char *str);
240 /* specify sort criteria for search */
242 ZOOM_query_sortby(ZOOM_query s, const char *criteria);
244 /* ----------------------------------------------------------- */
246 ZOOM_API(ZOOM_scanset)
247 ZOOM_connection_scan (ZOOM_connection c, const char *startterm);
249 ZOOM_API(ZOOM_scanset)
250 ZOOM_connection_scan1 (ZOOM_connection c, ZOOM_query startterm);
252 ZOOM_API(const char *)
253 ZOOM_scanset_term(ZOOM_scanset scan, size_t pos,
256 ZOOM_API(const char *)
257 ZOOM_scanset_display_term(ZOOM_scanset scan, size_t pos,
261 ZOOM_scanset_size(ZOOM_scanset scan);
264 ZOOM_scanset_destroy (ZOOM_scanset scan);
266 ZOOM_API(const char *)
267 ZOOM_scanset_option_get (ZOOM_scanset scan, const char *key);
270 ZOOM_scanset_option_set (ZOOM_scanset scan, const char *key,
272 /* ----------------------------------------------------------- */
273 /* Extended Services Packages */
275 ZOOM_API(ZOOM_package)
276 ZOOM_connection_package (ZOOM_connection c, ZOOM_options options);
279 ZOOM_package_destroy(ZOOM_package p);
282 ZOOM_package_send (ZOOM_package p, const char *type);
284 ZOOM_API(const char *)
285 ZOOM_package_option_get (ZOOM_package p, const char *key);
288 ZOOM_package_option_set (ZOOM_package p, const char *key,
291 /* ----------------------------------------------------------- */
292 /* Sort. First function is deprecated, use second instead */
294 ZOOM_resultset_sort(ZOOM_resultset r,
295 const char *sort_type, const char *sort_spec);
297 ZOOM_resultset_sort1(ZOOM_resultset r,
298 const char *sort_type, const char *sort_spec);
300 /* ----------------------------------------------------------- */
303 ZOOM_API(ZOOM_options_callback)
304 ZOOM_options_set_callback (ZOOM_options opt,
305 ZOOM_options_callback c,
307 ZOOM_API(ZOOM_options)
308 ZOOM_options_create (void);
310 ZOOM_API(ZOOM_options)
311 ZOOM_options_create_with_parent (ZOOM_options parent);
313 ZOOM_API(ZOOM_options)
314 ZOOM_options_create_with_parent2 (ZOOM_options parent1,
315 ZOOM_options parent2);
317 ZOOM_API(const char *)
318 ZOOM_options_get (ZOOM_options opt, const char *name);
320 ZOOM_API(const char *)
321 ZOOM_options_getl (ZOOM_options opt, const char *name, int *lenp);
324 ZOOM_options_set (ZOOM_options opt, const char *name, const char *v);
327 ZOOM_options_setl (ZOOM_options opt, const char *name, const char *value,
331 ZOOM_options_destroy (ZOOM_options opt);
334 ZOOM_options_get_bool (ZOOM_options opt, const char *name, int defa);
337 ZOOM_options_get_int (ZOOM_options opt, const char *name, int defa);
340 ZOOM_options_set_int(ZOOM_options opt, const char *name, int value);
342 /** \brief select/poll socket mask: read */
343 #define ZOOM_SELECT_READ 1
344 /** \brief select/poll socket mask: write */
345 #define ZOOM_SELECT_WRITE 2
346 /** \brief select/poll socket mask: except */
347 #define ZOOM_SELECT_EXCEPT 4
349 /** \brief wait for events on connection(s) (BLOCKING)
350 \param no number of connections (size of cs)
351 \param cs connection array
352 \retval 0 no event was fired
353 \retval >0 event was fired for connection at (retval-1)
355 blocking poll for events on a number of connections. Returns positive
356 integer if event occurred ; zero if none occurred and no more
357 events are pending. The positive integer specifies the
358 connection for which the event occurred.
361 ZOOM_event (int no, ZOOM_connection *cs);
364 /** \brief determines if connection is idle (no active or pending work)
367 \retval 0 is non-idle (active)
370 ZOOM_connection_is_idle(ZOOM_connection c);
373 /** \brief process one event for one of connections given
374 \param no number of connections (size of cs)
375 \param cs connection array
376 \retval 0 no event was processed
377 \retval >0 event was processed for connection at (retval-1)
379 This function attemps to deal with outstandings events in a non-blocking
380 mode. If no events was processed (return value of 0), then the system
381 should attempt to deal with sockets in blocking mode using socket
382 select/poll which means calling the following functions:
383 ZOOM_connection_get_socket, ZOOM_connection_get_mask,
384 ZOOM_connection_get_timeout.
387 ZOOM_event_nonblock(int no, ZOOM_connection *cs);
390 /** \brief process one event for connection
392 \retval 0 no event was processed
393 \retval 1 event was processed for connection
395 This function attemps to deal with outstandings events in
396 a non-blocking fashion. If no event was processed (return value of 0),
397 then the system should attempt to deal with sockets in blocking mode
398 using socket select/poll which means calling the following functions:
399 ZOOM_connection_get_socket, ZOOM_connection_get_mask,
400 ZOOM_connection_get_timeout. If an event was processed call this
404 ZOOM_connection_process(ZOOM_connection c);
407 /** \brief get socket fd for ZOOM connection
409 \retval -1 no socket assigned for connection
410 \retval >=0 socket for connection
412 Use this function when preparing for socket/poll and
413 in conjunction with ZOOM_connection_get_mask.
416 ZOOM_connection_get_socket(ZOOM_connection c);
419 /** \brief get socket mask for connection
421 \returns mask for connection (possibly 0)
423 Use this function when preparing for socket select/poll and
424 in conjunction with ZOOM_connection_get_socket.
427 ZOOM_connection_get_mask(ZOOM_connection c);
430 /** \brief set socket mask for connection (DO NOT call outside zoom) */
432 ZOOM_connection_set_mask(ZOOM_connection c, int mask);
435 /** \brief get timeout in seconds for ZOOM connection
437 \returns timeout value in seconds
439 Use this function when preparing for socket/poll and
440 in conjunction with ZOOM_connection_get_socket.
443 ZOOM_connection_get_timeout(ZOOM_connection c);
446 /** \brief fire socket event timeout
448 \retval 0 event was fired OK
449 \retval -1 event was not fired
451 Call this function when a timeout occurs - for example in the
452 case of select(2) returning 0.
455 ZOOM_connection_fire_event_timeout(ZOOM_connection c);
458 /** \brief fire socket event activity (read,write,except)
460 \param mask or'ed mask of ZOOM_SELECT_.. values
461 \retval 0 event was fired OK
462 \retval -1 event was not fired
465 ZOOM_connection_fire_event_socket(ZOOM_connection c, int mask);
469 /** \brief peek at next event
471 \returns ZOOM_EVENT_NONE (for no events in queue), ZOOM_EVENT_CONNECT, ..
473 Does not actually remove the event from the event queue. ZOOM_event and
474 ZOOM_process_event removes one event.
478 ZOOM_connection_peek_event(ZOOM_connection c);
484 * indent-tabs-mode: nil
486 * vim: shiftwidth=4 tabstop=8 expandtab