1 /* This file is part of the YAZ toolkit.
2 * Copyright (C) 1995-2008 Index Data.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * * Neither the name of Index Data nor the names of its contributors
13 * may be used to endorse or promote products derived from this
14 * software without specific prior written permission.
16 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY
20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 * \brief Header for ZOOM
34 #include <yaz/yconfig.h>
36 #define ZOOM_BEGIN_CDECL YAZ_BEGIN_CDECL
37 #define ZOOM_END_CDECL YAZ_END_CDECL
40 # define ZOOM_API(x) __declspec(dllexport) x __stdcall
42 # define ZOOM_API(x) x
47 /* ----------------------------------------------------------- */
48 /* the types we use */
50 typedef struct ZOOM_options_p *ZOOM_options;
51 typedef struct ZOOM_query_p *ZOOM_query;
52 typedef struct ZOOM_connection_p *ZOOM_connection;
53 typedef struct ZOOM_resultset_p *ZOOM_resultset;
54 typedef struct ZOOM_record_p *ZOOM_record;
55 typedef struct ZOOM_scanset_p *ZOOM_scanset;
56 typedef struct ZOOM_package_p *ZOOM_package;
58 typedef const char *(*ZOOM_options_callback)(void *handle, const char *name);
60 /* ----------------------------------------------------------- */
63 /* create connection, connect to host, if portnum is 0, then port is
64 read from host string (e.g. myhost:9821) */
65 ZOOM_API(ZOOM_connection)
66 ZOOM_connection_new (const char *host, int portnum);
68 /* create connection, don't connect, apply options */
69 ZOOM_API(ZOOM_connection)
70 ZOOM_connection_create (ZOOM_options options);
72 /* connect given existing connection */
74 ZOOM_connection_connect(ZOOM_connection c, const char *host,
77 /* destroy connection (close connection also) */
79 ZOOM_connection_destroy (ZOOM_connection c);
81 /* get/set option for connection */
82 ZOOM_API(const char *)
83 ZOOM_connection_option_get (ZOOM_connection c, const char *key);
85 ZOOM_API(const char *)
86 ZOOM_connection_option_getl (ZOOM_connection c, const char *key, int *lenp);
89 ZOOM_connection_option_set (ZOOM_connection c, const char *key,
93 ZOOM_connection_option_setl (ZOOM_connection c, const char *key,
94 const char *val, int len);
96 /* return error code (0 == success, failure otherwise). cp
97 holds error string on failure, addinfo holds addititional info (if any)
100 ZOOM_connection_error (ZOOM_connection c, const char **cp,
101 const char **addinfo);
104 ZOOM_connection_error_x (ZOOM_connection c, const char **cp,
105 const char **addinfo, const char **diagset);
107 /* returns error code */
109 ZOOM_connection_errcode (ZOOM_connection c);
110 /* returns error message */
111 ZOOM_API(const char *)
112 ZOOM_connection_errmsg (ZOOM_connection c);
113 /* returns additional info */
114 ZOOM_API(const char *)
115 ZOOM_connection_addinfo (ZOOM_connection c);
116 /* returns diagnostic set */
117 ZOOM_API(const char *)
118 ZOOM_connection_diagset (ZOOM_connection c);
119 /* translates error code into human-readable string */
120 ZOOM_API(const char *)
121 ZOOM_diag_str (int error);
123 #define ZOOM_ERROR_NONE 0
124 #define ZOOM_ERROR_CONNECT 10000
125 #define ZOOM_ERROR_MEMORY 10001
126 #define ZOOM_ERROR_ENCODE 10002
127 #define ZOOM_ERROR_DECODE 10003
128 #define ZOOM_ERROR_CONNECTION_LOST 10004
129 #define ZOOM_ERROR_INIT 10005
130 #define ZOOM_ERROR_INTERNAL 10006
131 #define ZOOM_ERROR_TIMEOUT 10007
132 #define ZOOM_ERROR_UNSUPPORTED_PROTOCOL 10008
133 #define ZOOM_ERROR_UNSUPPORTED_QUERY 10009
134 #define ZOOM_ERROR_INVALID_QUERY 10010
135 #define ZOOM_ERROR_CQL_PARSE 10011
136 #define ZOOM_ERROR_CQL_TRANSFORM 10012
137 #define ZOOM_ERROR_CCL_CONFIG 10013
138 #define ZOOM_ERROR_CCL_PARSE 10014
141 ZOOM_connection_last_event(ZOOM_connection cs);
143 #define ZOOM_EVENT_NONE 0
144 #define ZOOM_EVENT_CONNECT 1
145 #define ZOOM_EVENT_SEND_DATA 2
146 #define ZOOM_EVENT_RECV_DATA 3
147 #define ZOOM_EVENT_TIMEOUT 4
148 #define ZOOM_EVENT_UNKNOWN 5
149 #define ZOOM_EVENT_SEND_APDU 6
150 #define ZOOM_EVENT_RECV_APDU 7
151 #define ZOOM_EVENT_RECV_RECORD 8
152 #define ZOOM_EVENT_RECV_SEARCH 9
153 #define ZOOM_EVENT_END 10
155 /* ----------------------------------------------------------- */
158 /* create result set given a search */
159 ZOOM_API(ZOOM_resultset)
160 ZOOM_connection_search(ZOOM_connection, ZOOM_query q);
161 /* create result set given PQF query */
162 ZOOM_API(ZOOM_resultset)
163 ZOOM_connection_search_pqf(ZOOM_connection c, const char *q);
165 /* destroy result set */
167 ZOOM_resultset_destroy(ZOOM_resultset r);
169 /* result set option */
170 ZOOM_API(const char *)
171 ZOOM_resultset_option_get (ZOOM_resultset r, const char *key);
173 ZOOM_resultset_option_set (ZOOM_resultset r, const char *key, const char *val);
175 /* return size of result set (alias hit count AKA result count) */
177 ZOOM_resultset_size (ZOOM_resultset r);
179 /* retrieve records */
181 ZOOM_resultset_records (ZOOM_resultset r, ZOOM_record *recs,
182 size_t start, size_t count);
184 /* return record object at pos. Returns 0 if unavailable */
185 ZOOM_API(ZOOM_record)
186 ZOOM_resultset_record (ZOOM_resultset s, size_t pos);
188 /* like ZOOM_resultset_record - but never blocks .. */
189 ZOOM_API(ZOOM_record)
190 ZOOM_resultset_record_immediate (ZOOM_resultset s, size_t pos);
192 /* reset record cache for result set */
194 ZOOM_resultset_cache_reset(ZOOM_resultset r);
196 /* ----------------------------------------------------------- */
199 /* get record information, in a form given by type */
200 ZOOM_API(const char *)
201 ZOOM_record_get (ZOOM_record rec, const char *type, int *len);
205 ZOOM_record_destroy (ZOOM_record rec);
207 /* return copy of record */
208 ZOOM_API(ZOOM_record)
209 ZOOM_record_clone (ZOOM_record srec);
211 /* return error info (surrogate diagnostic) for record */
213 ZOOM_record_error(ZOOM_record rec, const char **msg,
214 const char **addinfo, const char **diagset);
216 /* ----------------------------------------------------------- */
219 /* create search object */
221 ZOOM_query_create(void);
224 ZOOM_query_destroy(ZOOM_query s);
227 ZOOM_query_cql(ZOOM_query s, const char *str);
228 /* CQL translated client-side into RPN: `conn' is optional for diagnostics */
230 ZOOM_query_cql2rpn(ZOOM_query s, const char *str, ZOOM_connection conn);
231 /* CCL translated client-side into RPN: `conn' is optional for diagnostics */
233 ZOOM_query_ccl2rpn(ZOOM_query s, const char *query_str,
235 int *ccl_error, const char **error_string, int *error_pos);
238 ZOOM_query_prefix(ZOOM_query s, const char *str);
239 /* specify sort criteria for search */
241 ZOOM_query_sortby(ZOOM_query s, const char *criteria);
243 /* ----------------------------------------------------------- */
245 ZOOM_API(ZOOM_scanset)
246 ZOOM_connection_scan (ZOOM_connection c, const char *startterm);
248 ZOOM_API(ZOOM_scanset)
249 ZOOM_connection_scan1 (ZOOM_connection c, ZOOM_query startterm);
251 ZOOM_API(const char *)
252 ZOOM_scanset_term(ZOOM_scanset scan, size_t pos,
255 ZOOM_API(const char *)
256 ZOOM_scanset_display_term(ZOOM_scanset scan, size_t pos,
260 ZOOM_scanset_size(ZOOM_scanset scan);
263 ZOOM_scanset_destroy (ZOOM_scanset scan);
265 ZOOM_API(const char *)
266 ZOOM_scanset_option_get (ZOOM_scanset scan, const char *key);
269 ZOOM_scanset_option_set (ZOOM_scanset scan, const char *key,
271 /* ----------------------------------------------------------- */
272 /* Extended Services Packages */
274 ZOOM_API(ZOOM_package)
275 ZOOM_connection_package (ZOOM_connection c, ZOOM_options options);
278 ZOOM_package_destroy(ZOOM_package p);
281 ZOOM_package_send (ZOOM_package p, const char *type);
283 ZOOM_API(const char *)
284 ZOOM_package_option_get (ZOOM_package p, const char *key);
286 ZOOM_API(const char *)
287 ZOOM_package_option_getl (ZOOM_package p, const char *key, int *lenp);
290 ZOOM_package_option_set (ZOOM_package p, const char *key,
294 ZOOM_package_option_setl (ZOOM_package p, const char *key,
295 const char *val, int len);
297 /* ----------------------------------------------------------- */
298 /* Sort. First function is deprecated, use second instead */
300 ZOOM_resultset_sort(ZOOM_resultset r,
301 const char *sort_type, const char *sort_spec);
303 ZOOM_resultset_sort1(ZOOM_resultset r,
304 const char *sort_type, const char *sort_spec);
306 /* ----------------------------------------------------------- */
309 ZOOM_API(ZOOM_options_callback)
310 ZOOM_options_set_callback (ZOOM_options opt,
311 ZOOM_options_callback c,
313 ZOOM_API(ZOOM_options)
314 ZOOM_options_create (void);
316 ZOOM_API(ZOOM_options)
317 ZOOM_options_create_with_parent (ZOOM_options parent);
319 ZOOM_API(ZOOM_options)
320 ZOOM_options_create_with_parent2 (ZOOM_options parent1,
321 ZOOM_options parent2);
323 ZOOM_API(ZOOM_options)
324 ZOOM_options_dup(ZOOM_options src);
326 ZOOM_API(const char *)
327 ZOOM_options_get (ZOOM_options opt, const char *name);
329 ZOOM_API(const char *)
330 ZOOM_options_getl (ZOOM_options opt, const char *name, int *lenp);
333 ZOOM_options_set (ZOOM_options opt, const char *name, const char *v);
336 ZOOM_options_setl (ZOOM_options opt, const char *name, const char *value,
340 ZOOM_options_destroy (ZOOM_options opt);
343 ZOOM_options_get_bool (ZOOM_options opt, const char *name, int defa);
346 ZOOM_options_get_int (ZOOM_options opt, const char *name, int defa);
349 ZOOM_options_set_int(ZOOM_options opt, const char *name, int value);
351 /** \brief select/poll socket mask: read */
352 #define ZOOM_SELECT_READ 1
353 /** \brief select/poll socket mask: write */
354 #define ZOOM_SELECT_WRITE 2
355 /** \brief select/poll socket mask: except */
356 #define ZOOM_SELECT_EXCEPT 4
358 /** \brief wait for events on connection(s) (BLOCKING)
359 \param no number of connections (size of cs)
360 \param cs connection array
361 \retval 0 no event was fired
362 \retval >0 event was fired for connection at (retval-1)
364 blocking poll for events on a number of connections. Returns positive
365 integer if event occurred ; zero if none occurred and no more
366 events are pending. The positive integer specifies the
367 connection for which the event occurred.
370 ZOOM_event (int no, ZOOM_connection *cs);
373 /** \brief determines if connection is idle (no active or pending work)
376 \retval 0 is non-idle (active)
379 ZOOM_connection_is_idle(ZOOM_connection c);
382 /** \brief process one event for one of connections given
383 \param no number of connections (size of cs)
384 \param cs connection array
385 \retval 0 no event was processed
386 \retval >0 event was processed for connection at (retval-1)
388 This function attemps to deal with outstandings events in a non-blocking
389 mode. If no events was processed (return value of 0), then the system
390 should attempt to deal with sockets in blocking mode using socket
391 select/poll which means calling the following functions:
392 ZOOM_connection_get_socket, ZOOM_connection_get_mask,
393 ZOOM_connection_get_timeout.
396 ZOOM_event_nonblock(int no, ZOOM_connection *cs);
399 /** \brief process one event for connection
401 \retval 0 no event was processed
402 \retval 1 event was processed for connection
404 This function attemps to deal with outstandings events in
405 a non-blocking fashion. If no event was processed (return value of 0),
406 then the system should attempt to deal with sockets in blocking mode
407 using socket select/poll which means calling the following functions:
408 ZOOM_connection_get_socket, ZOOM_connection_get_mask,
409 ZOOM_connection_get_timeout. If an event was processed call this
413 ZOOM_connection_process(ZOOM_connection c);
416 /** \brief get socket fd for ZOOM connection
418 \retval -1 no socket assigned for connection
419 \retval >=0 socket for connection
421 Use this function when preparing for socket/poll and
422 in conjunction with ZOOM_connection_get_mask.
425 ZOOM_connection_get_socket(ZOOM_connection c);
428 /** \brief get socket mask for connection
430 \returns mask for connection (possibly 0)
432 Use this function when preparing for socket select/poll and
433 in conjunction with ZOOM_connection_get_socket.
436 ZOOM_connection_get_mask(ZOOM_connection c);
439 /** \brief set socket mask for connection (DO NOT call outside zoom) */
441 ZOOM_connection_set_mask(ZOOM_connection c, int mask);
444 /** \brief get timeout in seconds for ZOOM connection
446 \returns timeout value in seconds
448 Use this function when preparing for socket/poll and
449 in conjunction with ZOOM_connection_get_socket.
452 ZOOM_connection_get_timeout(ZOOM_connection c);
455 /** \brief fire socket event timeout
457 \retval 0 event was fired OK
458 \retval -1 event was not fired
460 Call this function when a timeout occurs - for example in the
461 case of select(2) returning 0.
464 ZOOM_connection_fire_event_timeout(ZOOM_connection c);
467 /** \brief fire socket event activity (read,write,except)
469 \param mask or'ed mask of ZOOM_SELECT_.. values
470 \retval 0 event was fired OK
471 \retval -1 event was not fired
474 ZOOM_connection_fire_event_socket(ZOOM_connection c, int mask);
478 /** \brief peek at next event
480 \returns ZOOM_EVENT_NONE (for no events in queue), ZOOM_EVENT_CONNECT, ..
482 Does not actually remove the event from the event queue. ZOOM_event and
483 ZOOM_process_event removes one event.
487 ZOOM_connection_peek_event(ZOOM_connection c);
489 ZOOM_API(const char *)
490 ZOOM_get_event_str(int event);
495 * indent-tabs-mode: nil
497 * vim: shiftwidth=4 tabstop=8 expandtab