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/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 1999-2003
* Sleepycat Software. All rights reserved.
*/
#include "db_config.h"
#ifndef lint
static const char revid[] = "$Id: bt_method.c,v 11.34 2003/06/30 17:19:32 bostic Exp $";
#endif /* not lint */
#ifndef NO_SYSTEM_INCLUDES
#include <sys/types.h>
#endif
#include "db_int.h"
#include "dbinc/db_page.h"
#include "dbinc/btree.h"
#include "dbinc/qam.h"
static int __bam_set_bt_maxkey __P((DB *, u_int32_t));
static int __bam_get_bt_minkey __P((DB *, u_int32_t *));
static int __bam_set_bt_minkey __P((DB *, u_int32_t));
static int __bam_set_bt_prefix
__P((DB *, size_t(*)(DB *, const DBT *, const DBT *)));
static int __ram_get_re_delim __P((DB *, int *));
static int __ram_set_re_delim __P((DB *, int));
static int __ram_get_re_len __P((DB *, u_int32_t *));
static int __ram_set_re_len __P((DB *, u_int32_t));
static int __ram_get_re_pad __P((DB *, int *));
static int __ram_set_re_pad __P((DB *, int));
static int __ram_get_re_source __P((DB *, const char **));
static int __ram_set_re_source __P((DB *, const char *));
/*
* __bam_db_create --
* Btree specific initialization of the DB structure.
*
* PUBLIC: int __bam_db_create __P((DB *));
*/
int
__bam_db_create(dbp)
DB *dbp;
{
BTREE *t;
int ret;
/* Allocate and initialize the private btree structure. */
if ((ret = __os_calloc(dbp->dbenv, 1, sizeof(BTREE), &t)) != 0)
return (ret);
dbp->bt_internal = t;
t->bt_minkey = DEFMINKEYPAGE; /* Btree */
t->bt_compare = __bam_defcmp;
t->bt_prefix = __bam_defpfx;
dbp->set_bt_compare = __bam_set_bt_compare;
dbp->set_bt_maxkey = __bam_set_bt_maxkey;
dbp->get_bt_minkey = __bam_get_bt_minkey;
dbp->set_bt_minkey = __bam_set_bt_minkey;
dbp->set_bt_prefix = __bam_set_bt_prefix;
t->re_pad = ' '; /* Recno */
t->re_delim = '\n';
t->re_eof = 1;
dbp->get_re_delim = __ram_get_re_delim;
dbp->set_re_delim = __ram_set_re_delim;
dbp->get_re_len = __ram_get_re_len;
dbp->set_re_len = __ram_set_re_len;
dbp->get_re_pad = __ram_get_re_pad;
dbp->set_re_pad = __ram_set_re_pad;
dbp->get_re_source = __ram_get_re_source;
dbp->set_re_source = __ram_set_re_source;
return (0);
}
/*
* __bam_db_close --
* Btree specific discard of the DB structure.
*
* PUBLIC: int __bam_db_close __P((DB *));
*/
int
__bam_db_close(dbp)
DB *dbp;
{
BTREE *t;
if ((t = dbp->bt_internal) == NULL)
return (0);
/* Recno */
/* Close any backing source file descriptor. */
if (t->re_fp != NULL)
(void)fclose(t->re_fp);
/* Free any backing source file name. */
if (t->re_source != NULL)
__os_free(dbp->dbenv, t->re_source);
__os_free(dbp->dbenv, t);
dbp->bt_internal = NULL;
return (0);
}
/*
* __bam_map_flags --
* Map Btree specific flags from public to the internal values.
*
* PUBLIC: void __bam_map_flags __P((DB *, u_int32_t *, u_int32_t *));
*/
void
__bam_map_flags(dbp, inflagsp, outflagsp)
DB *dbp;
u_int32_t *inflagsp, *outflagsp;
{
COMPQUIET(dbp, NULL);
if (FLD_ISSET(*inflagsp, DB_DUP)) {
FLD_SET(*outflagsp, DB_AM_DUP);
FLD_CLR(*inflagsp, DB_DUP);
}
if (FLD_ISSET(*inflagsp, DB_DUPSORT)) {
FLD_SET(*outflagsp, DB_AM_DUP | DB_AM_DUPSORT);
FLD_CLR(*inflagsp, DB_DUPSORT);
}
if (FLD_ISSET(*inflagsp, DB_RECNUM)) {
FLD_SET(*outflagsp, DB_AM_RECNUM);
FLD_CLR(*inflagsp, DB_RECNUM);
}
if (FLD_ISSET(*inflagsp, DB_REVSPLITOFF)) {
FLD_SET(*outflagsp, DB_AM_REVSPLITOFF);
FLD_CLR(*inflagsp, DB_REVSPLITOFF);
}
}
/*
* __bam_set_flags --
* Set Btree specific flags.
*
* PUBLIC: int __bam_set_flags __P((DB *, u_int32_t *flagsp));
*/
int
__bam_set_flags(dbp, flagsp)
DB *dbp;
u_int32_t *flagsp;
{
u_int32_t flags;
flags = *flagsp;
if (LF_ISSET(DB_DUP | DB_DUPSORT | DB_RECNUM | DB_REVSPLITOFF))
DB_ILLEGAL_AFTER_OPEN(dbp, "DB->set_flags");
/*
* The DB_DUP and DB_DUPSORT flags are shared by the Hash
* and Btree access methods.
*/
if (LF_ISSET(DB_DUP | DB_DUPSORT))
DB_ILLEGAL_METHOD(dbp, DB_OK_BTREE | DB_OK_HASH);
if (LF_ISSET(DB_RECNUM | DB_REVSPLITOFF))
DB_ILLEGAL_METHOD(dbp, DB_OK_BTREE);
/* DB_DUP/DB_DUPSORT is incompatible with DB_RECNUM. */
if (LF_ISSET(DB_DUP | DB_DUPSORT) && F_ISSET(dbp, DB_AM_RECNUM))
goto incompat;
/* DB_RECNUM is incompatible with DB_DUP/DB_DUPSORT. */
if (LF_ISSET(DB_RECNUM) && F_ISSET(dbp, DB_AM_DUP))
goto incompat;
if (LF_ISSET(DB_DUPSORT) && dbp->dup_compare == NULL)
dbp->dup_compare = __bam_defcmp;
__bam_map_flags(dbp, flagsp, &dbp->flags);
return (0);
incompat:
return (__db_ferr(dbp->dbenv, "DB->set_flags", 1));
}
/*
* __bam_set_bt_compare --
* Set the comparison function.
*
* PUBLIC: int __bam_set_bt_compare
* PUBLIC: __P((DB *, int (*)(DB *, const DBT *, const DBT *)));
*/
int
__bam_set_bt_compare(dbp, func)
DB *dbp;
int (*func) __P((DB *, const DBT *, const DBT *));
{
BTREE *t;
DB_ILLEGAL_AFTER_OPEN(dbp, "DB->set_bt_compare");
DB_ILLEGAL_METHOD(dbp, DB_OK_BTREE);
t = dbp->bt_internal;
/*
* Can't default the prefix routine if the user supplies a comparison
* routine; shortening the keys can break their comparison algorithm.
*/
t->bt_compare = func;
if (t->bt_prefix == __bam_defpfx)
t->bt_prefix = NULL;
return (0);
}
/*
* __bam_set_bt_maxkey --
* Set the maximum keys per page.
*/
static int
__bam_set_bt_maxkey(dbp, bt_maxkey)
DB *dbp;
u_int32_t bt_maxkey;
{
BTREE *t;
DB_ILLEGAL_AFTER_OPEN(dbp, "DB->set_bt_maxkey");
DB_ILLEGAL_METHOD(dbp, DB_OK_BTREE);
t = dbp->bt_internal;
if (bt_maxkey < 1) {
__db_err(dbp->dbenv, "minimum bt_maxkey value is 1");
return (EINVAL);
}
t->bt_maxkey = bt_maxkey;
return (0);
}
/*
* __db_get_bt_minkey --
* Get the minimum keys per page.
*/
static int
__bam_get_bt_minkey(dbp, bt_minkeyp)
DB *dbp;
u_int32_t *bt_minkeyp;
{
BTREE *t;
DB_ILLEGAL_METHOD(dbp, DB_OK_BTREE);
t = dbp->bt_internal;
*bt_minkeyp = t->bt_minkey;
return (0);
}
/*
* __bam_set_bt_minkey --
* Set the minimum keys per page.
*/
static int
__bam_set_bt_minkey(dbp, bt_minkey)
DB *dbp;
u_int32_t bt_minkey;
{
BTREE *t;
DB_ILLEGAL_AFTER_OPEN(dbp, "DB->set_bt_minkey");
DB_ILLEGAL_METHOD(dbp, DB_OK_BTREE);
t = dbp->bt_internal;
if (bt_minkey < 2) {
__db_err(dbp->dbenv, "minimum bt_minkey value is 2");
return (EINVAL);
}
t->bt_minkey = bt_minkey;
return (0);
}
/*
* __bam_set_bt_prefix --
* Set the prefix function.
*/
static int
__bam_set_bt_prefix(dbp, func)
DB *dbp;
size_t (*func) __P((DB *, const DBT *, const DBT *));
{
BTREE *t;
DB_ILLEGAL_AFTER_OPEN(dbp, "DB->set_bt_prefix");
DB_ILLEGAL_METHOD(dbp, DB_OK_BTREE);
t = dbp->bt_internal;
t->bt_prefix = func;
return (0);
}
/*
* __ram_map_flags --
* Map Recno specific flags from public to the internal values.
*
* PUBLIC: void __ram_map_flags __P((DB *, u_int32_t *, u_int32_t *));
*/
void
__ram_map_flags(dbp, inflagsp, outflagsp)
DB *dbp;
u_int32_t *inflagsp, *outflagsp;
{
COMPQUIET(dbp, NULL);
if (FLD_ISSET(*inflagsp, DB_RENUMBER)) {
FLD_SET(*outflagsp, DB_AM_RENUMBER);
FLD_CLR(*inflagsp, DB_RENUMBER);
}
if (FLD_ISSET(*inflagsp, DB_SNAPSHOT)) {
FLD_SET(*outflagsp, DB_AM_SNAPSHOT);
FLD_CLR(*inflagsp, DB_SNAPSHOT);
}
}
/*
* __ram_set_flags --
* Set Recno specific flags.
*
* PUBLIC: int __ram_set_flags __P((DB *, u_int32_t *flagsp));
*/
int
__ram_set_flags(dbp, flagsp)
DB *dbp;
u_int32_t *flagsp;
{
u_int32_t flags;
flags = *flagsp;
if (LF_ISSET(DB_RENUMBER | DB_SNAPSHOT)) {
DB_ILLEGAL_AFTER_OPEN(dbp, "DB->set_flags");
DB_ILLEGAL_METHOD(dbp, DB_OK_RECNO);
}
__ram_map_flags(dbp, flagsp, &dbp->flags);
return (0);
}
/*
* __db_get_re_delim --
* Get the variable-length input record delimiter.
*/
static int
__ram_get_re_delim(dbp, re_delimp)
DB *dbp;
int *re_delimp;
{
BTREE *t;
DB_ILLEGAL_METHOD(dbp, DB_OK_RECNO);
t = dbp->bt_internal;
*re_delimp = t->re_delim;
return (0);
}
/*
* __ram_set_re_delim --
* Set the variable-length input record delimiter.
*/
static int
__ram_set_re_delim(dbp, re_delim)
DB *dbp;
int re_delim;
{
BTREE *t;
DB_ILLEGAL_AFTER_OPEN(dbp, "DB->set_re_delim");
DB_ILLEGAL_METHOD(dbp, DB_OK_RECNO);
t = dbp->bt_internal;
t->re_delim = re_delim;
F_SET(dbp, DB_AM_DELIMITER);
return (0);
}
/*
* __db_get_re_len --
* Get the variable-length input record length.
*/
static int
__ram_get_re_len(dbp, re_lenp)
DB *dbp;
u_int32_t *re_lenp;
{
BTREE *t;
DB_ILLEGAL_METHOD(dbp, DB_OK_QUEUE | DB_OK_RECNO);
t = dbp->bt_internal;
*re_lenp = t->re_len;
return (0);
}
/*
* __ram_set_re_len --
* Set the variable-length input record length.
*/
static int
__ram_set_re_len(dbp, re_len)
DB *dbp;
u_int32_t re_len;
{
BTREE *t;
QUEUE *q;
DB_ILLEGAL_AFTER_OPEN(dbp, "DB->set_re_len");
DB_ILLEGAL_METHOD(dbp, DB_OK_QUEUE | DB_OK_RECNO);
t = dbp->bt_internal;
t->re_len = re_len;
q = dbp->q_internal;
q->re_len = re_len;
F_SET(dbp, DB_AM_FIXEDLEN);
return (0);
}
/*
* __db_get_re_pad --
* Get the fixed-length record pad character.
*/
static int
__ram_get_re_pad(dbp, re_padp)
DB *dbp;
int *re_padp;
{
BTREE *t;
DB_ILLEGAL_METHOD(dbp, DB_OK_QUEUE | DB_OK_RECNO);
t = dbp->bt_internal;
*re_padp = t->re_pad;
return (0);
}
/*
* __ram_set_re_pad --
* Set the fixed-length record pad character.
*/
static int
__ram_set_re_pad(dbp, re_pad)
DB *dbp;
int re_pad;
{
BTREE *t;
QUEUE *q;
DB_ILLEGAL_AFTER_OPEN(dbp, "DB->set_re_pad");
DB_ILLEGAL_METHOD(dbp, DB_OK_QUEUE | DB_OK_RECNO);
t = dbp->bt_internal;
t->re_pad = re_pad;
q = dbp->q_internal;
q->re_pad = re_pad;
F_SET(dbp, DB_AM_PAD);
return (0);
}
/*
* __db_get_re_source --
* Get the backing source file name.
*/
static int
__ram_get_re_source(dbp, re_sourcep)
DB *dbp;
const char **re_sourcep;
{
BTREE *t;
DB_ILLEGAL_METHOD(dbp, DB_OK_RECNO);
t = dbp->bt_internal;
*re_sourcep = t->re_source;
return (0);
}
/*
* __ram_set_re_source --
* Set the backing source file name.
*/
static int
__ram_set_re_source(dbp, re_source)
DB *dbp;
const char *re_source;
{
BTREE *t;
DB_ILLEGAL_AFTER_OPEN(dbp, "DB->set_re_source");
DB_ILLEGAL_METHOD(dbp, DB_OK_RECNO);
t = dbp->bt_internal;
return (__os_strdup(dbp->dbenv, re_source, &t->re_source));
}
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