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