2 * Copyright (C) 1994-1998, Index Data
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.29 1999-05-20 12:57:18 adam
8 * Implemented TCL filter. Updated recctrl system.
10 * Revision 1.28 1999/03/02 16:15:42 quinn
11 * Added "tagsysno" and "tagrank" directives to zebra.cfg.
13 * Revision 1.27 1998/10/16 08:14:28 adam
14 * Updated record control system.
16 * Revision 1.26 1998/05/20 10:12:12 adam
17 * Implemented automatic EXPLAIN database maintenance.
18 * Modified Zebra to work with ASN.1 compiled version of YAZ.
20 * Revision 1.25 1998/03/11 11:19:04 adam
21 * Changed the way sequence numbers are generated.
23 * Revision 1.24 1998/03/05 08:38:46 adam
24 * New member recordSize in recRetrieveCtrl.
26 * Revision 1.23 1998/02/10 12:03:05 adam
29 * Revision 1.22 1997/10/27 14:33:04 adam
30 * Moved towards generic character mapping depending on "structure"
31 * field in abstract syntax file. Fixed a few memory leaks. Fixed
32 * bug with negative integers when doing searches with relational
35 * Revision 1.21 1997/09/18 08:59:19 adam
36 * Extra generic handle for the character mapping routines.
38 * Revision 1.20 1997/09/17 12:19:10 adam
39 * Zebra version corresponds to YAZ version 1.4.
40 * Changed Zebra server so that it doesn't depend on global common_resource.
42 * Revision 1.19 1997/09/05 15:30:02 adam
43 * Changed prototype for chr_map_input - added const.
44 * Added support for C++, headers uses extern "C" for public definitions.
46 * Revision 1.18 1997/09/04 13:56:15 adam
47 * Added new filter grs.marc.<syntax> where <syntax> refers to
48 * abstract syntax. New method tellf in extract/retrieve control
51 * Revision 1.17 1997/04/30 08:56:04 quinn
54 * Revision 1.16 1996/10/11 10:56:25 adam
55 * New module recctrl. Used to manage records (extract/retrieval).
56 * All record types are accessed by means of definitions in recctrl.h.
58 * Revision 1.15 1996/06/06 12:08:16 quinn
59 * Added showRecord Group entry
61 * Revision 1.14 1996/05/09 07:28:49 quinn
62 * Work towards phrases and multiple registers
64 * Revision 1.13 1996/05/01 13:44:05 adam
65 * Added seek function to the recExtractCtrl and recRetrieveCtrl control
66 * structures. Added end-of-file indicator function and start offset to
69 * Revision 1.12 1996/01/17 15:01:25 adam
70 * Prototype changed for reader functions in extract/retrieve. File
71 * is identified by 'void *' instead of 'int'.
73 * Revision 1.11 1995/12/04 14:20:54 adam
74 * Extra arg to recType_byName.
76 * Revision 1.10 1995/10/16 14:03:06 quinn
77 * Changes to support element set names and espec1
79 * Revision 1.9 1995/10/06 14:37:53 adam
80 * New result set method: r_score.
81 * Local no (sysno) and score is transferred to retrieveCtrl.
83 * Revision 1.8 1995/10/02 15:43:35 adam
84 * Extract uses file descriptors instead of FILE pointers.
86 * Revision 1.7 1995/10/02 15:18:09 adam
89 * Revision 1.6 1995/10/02 15:05:26 quinn
92 * Revision 1.5 1995/10/02 14:55:52 quinn
93 * *** empty log message ***
95 * Revision 1.4 1995/09/27 16:17:29 adam
96 * More work on retrieve.
98 * Revision 1.3 1995/09/27 12:21:25 adam
99 * New function: recType_byName.
101 * Revision 1.2 1995/09/15 14:45:03 adam
104 * Revision 1.1 1995/09/14 07:48:13 adam
105 * Record control management.
116 #include <zebramap.h>
122 /* single word entity */
130 ZebraMaps zebra_maps;
133 /* Extract record control */
134 struct recExtractCtrl {
135 void *fh; /* File handle and read function */
136 int (*readf)(void *fh, char *buf, size_t count);
137 off_t (*seekf)(void *fh, off_t offset); /* seek function */
138 off_t (*tellf)(void *fh); /* tell function */
139 void (*endf)(void *fh, off_t offset); /* end of record position */
140 off_t offset; /* start offset */
142 void (*init)(struct recExtractCtrl *p, RecWord *w);
143 void (*addWord)(RecWord *p);
144 ZebraMaps zebra_maps;
147 void (*addSchema)(struct recExtractCtrl *p, Odr_oid *oid);
151 /* Retrieve record control */
152 struct recRetrieveCtrl {
153 /* Input parameters ... */
154 Res res; /* Resource pool */
155 ODR odr; /* ODR used to create response */
156 void *fh; /* File descriptor and read function */
157 int (*readf)(void *fh, char *buf, size_t count);
158 off_t (*seekf)(void *fh, off_t offset);
159 off_t (*tellf)(void *fh);
160 oid_value input_format; /* Preferred record syntax */
161 Z_RecordComposition *comp; /* formatting instructions */
162 int localno; /* local id of record */
163 int score; /* score 0-1000 or -1 if none */
164 int recordSize; /* size of record in bytes */
169 oid_value output_format;
176 typedef struct recType *RecType;
180 char *name; /* Name of record type */
181 void *(*init)(RecType recType); /* Init function - called once */
182 void (*destroy)(void *clientData); /* Destroy function */
183 int (*extract)(void *clientData,
184 struct recExtractCtrl *ctrl); /* Extract proc */
185 int (*retrieve)(void *clientData,
186 struct recRetrieveCtrl *ctrl); /* Retrieve proc */
189 typedef struct recTypes *RecTypes;
191 RecTypes recTypes_init (data1_handle dh);
192 void recTypes_destroy (RecTypes recTypes);
193 void recTypes_default_handlers (RecTypes recTypes);
195 RecType recType_byName (RecTypes rts, const char *name, char *subType,
198 int grs_extract_tree(struct recExtractCtrl *p, data1_node *n);