1 /* This file is part of the Zebra server.
2 Copyright (C) 1994-2011 Index Data
4 Zebra is free software; you can redistribute it and/or modify it under
5 the terms of the GNU General Public License as published by the Free
6 Software Foundation; either version 2, or (at your option) any later
9 Zebra is distributed in the hope that it will be useful, but WITHOUT ANY
10 WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
23 #include <idzebra/util.h>
24 #include <zebra-lock.h>
25 #include <idzebra/bfile.h>
31 typedef struct record_info {
34 char *info[REC_NO_INFO];
35 size_t size[REC_NO_INFO];
36 char buf_size[REC_NO_INFO][6];
37 size_t size_size[REC_NO_INFO];
41 typedef struct records_info *Records;
43 /** \brief marks record for deletion (on file storage)
44 \param p records handle
45 \param recpp record pointer
46 \returns ZEBRA_OK / ZEBRA_FAIL
48 ZEBRA_RES rec_del(Records p, Record *recpp);
50 /** \brief frees record (from memory)
51 \param recpp record pointer
53 void rec_free(Record *recpp);
55 /** \brief puts record (writes into file storage)
56 \param p records handle
57 \param recpp record pointer
58 \returns ZEBRA_OK / ZEBRA_FAIL
60 ZEBRA_RES rec_put(Records p, Record *recpp);
62 /** \brief creates new record (to be written to file storage)
63 \param p records handle
64 \returns record pointer (or NULL on error)
66 Record rec_new(Records p);
67 /** \brief gets record - with given system number
68 \param p records handle
69 \param sysno system ID (external number)
70 \returns record pointer (or NULL on error)
72 Record rec_get(Records p, zint sysno);
74 /** \brief gets root record
75 \param p records handle
76 \returns record pointer (or NULL on error)
78 Record rec_get_root(Records p);
81 /** \brief gets next record - with given records
82 \param p records handle
84 \returns record pointer (or NULL on error)
86 Record rec_get_next(Records p, Record rec);
88 ZEBRA_RES rec_close (Records *p);
90 /** \brief opens records system
91 \param bfs block file storage
92 \param rw read-write flag(0=read only, 1=write)
93 \param compression_method REC_COMPRESS_ type
95 Records rec_open(BFiles bfs, int rw, int compression_method);
97 /** \brief check whether a compression method is supported
98 \param compression_method (REC_COMPRESS_..)
99 \retval 0 if method is unsupported
100 \retval 1 if method is supported
102 int rec_check_compression_method(int compression_method);
104 char *rec_strdup(const char *s, size_t *len);
105 void rec_prstat(Records p, int verbose);
107 zint rec_sysno_to_int(zint sysno);
110 /** \brief No compression ("none") */
111 #define REC_COMPRESS_NONE 0
112 /** \brief BZIP2 compression (slow and requires big chunks) */
113 #define REC_COMPRESS_BZIP2 1
114 /** \brief zlib compression (faster and works off small chunks) */
115 #define REC_COMPRESS_ZLIB 2
122 recInfo_databaseName,
128 typedef struct recindex *recindex_t;
130 /** \brief opens record index handle
131 \param bfs Block files handle
132 \param rw 1 for read and write; 0 for read-only
133 \param use_isamb 1 if ISAMB is to used for record index; 0 for flat (old)
135 recindex_t recindex_open(BFiles bfs, int rw, int use_isamb);
137 /** \brief closes record index handle
138 \param p records handle
140 void recindex_close(recindex_t p);
141 int recindex_read_head(recindex_t p, void *buf);
142 const char *recindex_get_fname(recindex_t p);
143 ZEBRA_RES recindex_write_head(recindex_t p, const void *buf, size_t len);
144 int recindex_read_indx(recindex_t p, zint sysno, void *buf, int itemsize,
146 void recindex_write_indx(recindex_t p, zint sysno, void *buf, int itemsize);
153 * c-file-style: "Stroustrup"
154 * indent-tabs-mode: nil
156 * vim: shiftwidth=4 tabstop=8 expandtab