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tctdb.c
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tctdb.c
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/*************************************************************************************************
* The table database API of Tokyo Cabinet
* Copyright (C) 2006-2012 FAL Labs
* This file is part of Tokyo Cabinet.
* Tokyo Cabinet is free software; you can redistribute it and/or modify it under the terms of
* the GNU Lesser General Public License as published by the Free Software Foundation; either
* version 2.1 of the License or any later version. Tokyo Cabinet is distributed in the hope
* that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
* License for more details.
* You should have received a copy of the GNU Lesser General Public License along with Tokyo
* Cabinet; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307 USA.
*************************************************************************************************/
#include "tcutil.h"
#include "tchdb.h"
#include "tcbdb.h"
#include "tctdb.h"
#include "myconf.h"
#define TDBOPAQUESIZ 64 // size of using opaque field
#define TDBLEFTOPQSIZ 64 // size of left opaque field
#define TDBPAGEBUFSIZ 32768 // size of a buffer to read each page
#define TDBDEFBNUM 131071 // default bucket number
#define TDBDEFAPOW 4 // default alignment power
#define TDBDEFFPOW 10 // default free block pool power
#define TDBDEFLCNUM 4096 // default number of leaf cache
#define TDBDEFNCNUM 512 // default number of node cache
#define TDBDEFXMSIZ (64LL<<20) // default size of the extra mapped memory
#define TDBIDXSUFFIX "idx" // suffix of column index file
#define TDBIDXLMEMB 64 // number of members in each leaf of the index
#define TDBIDXNMEMB 256 // number of members in each node of the index
#define TDBIDXLSMAX 4096 // maximum size of each leaf of the index
#define TDBIDXICCBNUM 262139 // bucket number of the index cache
#define TDBIDXICCMAX (64LL<<20) // maximum size of the index cache
#define TDBIDXICCSYNC 0.01 // ratio of cache synchronization
#define TDBIDXQGUNIT 3 // unit number of the q-gram index
#define TDBFTSUNITMAX 32 // maximum number of full-text search units
#define TDBFTSOCRUNIT 8192 // maximum number of full-text search units
#define TDBFTSBMNUM 524287 // number of elements of full-text search bitmap
#define TDBNUMCNTCOL "_num" // column name of number counting
#define TDBCOLBUFSIZ 1024 // size of a buffer for a column value
#define TDBNUMCOLMAX 16 // maximum number of columns of the long double
#define TDBHINTUSIZ 256 // unit size of the hint string
#define TDBORDRATIO 0.2 // ratio of records to use the order index
typedef struct { // type of structure for a sort record
const char *kbuf; // pointer to the primary key
int ksiz; // size of the primary key
char *vbuf; // pointer to the value
int vsiz; // size of the value
} TDBSORTREC;
typedef struct { // type of structure for a full-text search unit
TCLIST *tokens; // q-gram tokens
bool sign; // positive sign
} TDBFTSUNIT;
typedef struct { // type of structure for a full-text string occurrence
const char *pkbuf; // primary key string
int32_t pksiz; // size of the primary key
int32_t off; // offset of the token
uint16_t seq; // sequence number
uint16_t hash; // hash value for counting sort
} TDBFTSSTROCR;
typedef struct { // type of structure for a full-text number occurrence
int64_t pkid; // primery key number
int32_t off; // offset of the token
uint16_t seq; // sequence number
uint16_t hash; // hash value for counting sort
} TDBFTSNUMOCR;
/* private macros */
#define TDBLOCKMETHOD(TC_tdb, TC_wr) \
((TC_tdb)->mmtx ? tctdblockmethod((TC_tdb), (TC_wr)) : true)
#define TDBUNLOCKMETHOD(TC_tdb) \
((TC_tdb)->mmtx ? tctdbunlockmethod(TC_tdb) : true)
#define TDBTHREADYIELD(TC_tdb) \
do { if((TC_tdb)->mmtx) sched_yield(); } while(false)
/* private function prototypes */
static void tctdbclear(TCTDB *tdb);
static bool tctdbopenimpl(TCTDB *tdb, const char *path, int omode);
static bool tctdbcloseimpl(TCTDB *tdb);
static bool tctdbputimpl(TCTDB *tdb, const void *pkbuf, int pksiz, TCMAP *cols, int dmode);
static bool tctdboutimpl(TCTDB *tdb, const char *pkbuf, int pksiz);
static TCMAP *tctdbgetimpl(TCTDB *tdb, const void *pkbuf, int pksiz);
static char *tctdbgetonecol(TCTDB *tdb, const void *pkbuf, int pksiz,
const void *nbuf, int nsiz, int *sp);
static double tctdbaddnumber(TCTDB *tdb, const void *pkbuf, int pksiz, double num);
static bool tctdboptimizeimpl(TCTDB *tdb, int64_t bnum, int8_t apow, int8_t fpow, uint8_t opts);
static bool tctdbvanishimpl(TCTDB *tdb);
static bool tctdbcopyimpl(TCTDB *tdb, const char *path);
static bool tctdbtranbeginimpl(TCTDB *tdb);
static bool tctdbtrancommitimpl(TCTDB *tdb);
static bool tctdbtranabortimpl(TCTDB *tdb);
static bool tctdbsetindeximpl(TCTDB *tdb, const char *name, int type);
static int64_t tctdbgenuidimpl(TCTDB *tdb, int64_t inc);
static TCLIST *tctdbqrysearchimpl(TDBQRY *qry);
static TCMAP *tctdbqryidxfetch(TDBQRY *qry, TDBCOND *cond, TDBIDX *idx);
static long double tctdbatof(const char *str);
static bool tctdbqryidxcurjumpnum(BDBCUR *cur, const char *kbuf, int ksiz, bool first);
static bool tctdbqryonecondmatch(TDBQRY *qry, TDBCOND *cond, const char *pkbuf, int pksiz);
static bool tctdbqryallcondmatch(TDBQRY *qry, const char *pkbuf, int pksiz);
static bool tctdbqrycondmatch(TDBCOND *cond, const char *vbuf, int vsiz);
static bool tctdbqrycondcheckstrand(const char *tval, const char *oval);
static bool tctdbqrycondcheckstror(const char *tval, const char *oval);
static bool tctdbqrycondcheckstroreq(const char *vbuf, const char *expr);
static bool tctdbqrycondchecknumbt(const char *vbuf, const char *expr);
static bool tctdbqrycondchecknumoreq(const char *vbuf, const char *expr);
static bool tctdbqrycondcheckfts(const char *vbuf, int vsiz, TDBCOND *cond);
static int tdbcmppkeynumasc(const TCLISTDATUM *a, const TCLISTDATUM *b);
static int tdbcmppkeynumdesc(const TCLISTDATUM *a, const TCLISTDATUM *b);
static int tdbcmpsortrecstrasc(const TDBSORTREC *a, const TDBSORTREC *b);
static int tdbcmpsortrecstrdesc(const TDBSORTREC *a, const TDBSORTREC *b);
static int tdbcmpsortrecnumasc(const TDBSORTREC *a, const TDBSORTREC *b);
static int tdbcmpsortrecnumdesc(const TDBSORTREC *a, const TDBSORTREC *b);
static uint16_t tctdbidxhash(const char *pkbuf, int pksiz);
static bool tctdbidxput(TCTDB *tdb, const void *pkbuf, int pksiz, TCMAP *cols);
static bool tctdbidxputone(TCTDB *tdb, TDBIDX *idx, const char *pkbuf, int pksiz, uint16_t hash,
const char *vbuf, int vsiz);
static bool tctdbidxputtoken(TCTDB *tdb, TDBIDX *idx, const char *pkbuf, int pksiz,
const char *vbuf, int vsiz);
static bool tctdbidxputqgram(TCTDB *tdb, TDBIDX *idx, const char *pkbuf, int pksiz,
const char *vbuf, int vsiz);
static bool tctdbidxout(TCTDB *tdb, const void *pkbuf, int pksiz, TCMAP *cols);
static bool tctdbidxoutone(TCTDB *tdb, TDBIDX *idx, const char *pkbuf, int pksiz, uint16_t hash,
const char *vbuf, int vsiz);
static bool tctdbidxouttoken(TCTDB *tdb, TDBIDX *idx, const char *pkbuf, int pksiz,
const char *vbuf, int vsiz);
static bool tctdbidxoutqgram(TCTDB *tdb, TDBIDX *idx, const char *pkbuf, int pksiz,
const char *vbuf, int vsiz);
static bool tctdbidxsyncicc(TCTDB *tdb, TDBIDX *idx, bool all);
static int tctdbidxcmpkey(const char **a, const char **b);
static TCMAP *tctdbidxgetbytokens(TCTDB *tdb, TDBIDX *idx, const TCLIST *tokens, int op,
TCXSTR *hint);
static TCMAP *tctdbidxgetbyfts(TCTDB *tdb, TDBIDX *idx, TDBCOND *cond, TCXSTR *hint);
static void tctdbidxgetbyftsunion(TDBIDX *idx, const TCLIST *tokens, bool sign,
TCMAP *ores, TCMAP *nres, TCXSTR *hint);
static int tctdbidxftscmpstrocr(TDBFTSSTROCR *a, TDBFTSSTROCR *b);
static int tctdbidxftscmpnumocr(TDBFTSNUMOCR *a, TDBFTSNUMOCR *b);
static TDBFTSUNIT *tctdbftsparseexpr(const char *expr, int esiz, int op, int *np);
static bool tctdbdefragimpl(TCTDB *tdb, int64_t step);
static bool tctdbcacheclearimpl(TCTDB *tdb);
static bool tctdbforeachimpl(TCTDB *tdb, TCITER iter, void *op);
static int tctdbqryprocoutcb(const void *pkbuf, int pksiz, TCMAP *cols, void *op);
static bool tctdblockmethod(TCTDB *tdb, bool wr);
static bool tctdbunlockmethod(TCTDB *tdb);
/* debugging function prototypes */
void tctdbprintmeta(TCTDB *tdb);
/*************************************************************************************************
* API
*************************************************************************************************/
/* Get the message string corresponding to an error code. */
const char *tctdberrmsg(int ecode){
return tcerrmsg(ecode);
}
/* Create a table database object. */
TCTDB *tctdbnew(void){
TCTDB *tdb;
TCMALLOC(tdb, sizeof(*tdb));
tctdbclear(tdb);
tdb->hdb = tchdbnew();
tchdbtune(tdb->hdb, TDBDEFBNUM, TDBDEFAPOW, TDBDEFFPOW, 0);
tchdbsetxmsiz(tdb->hdb, TDBDEFXMSIZ);
return tdb;
}
/* Delete a table database object. */
void tctdbdel(TCTDB *tdb){
assert(tdb);
if(tdb->open) tctdbclose(tdb);
tchdbdel(tdb->hdb);
if(tdb->mmtx){
pthread_rwlock_destroy(tdb->mmtx);
TCFREE(tdb->mmtx);
}
TCFREE(tdb);
}
/* Get the last happened error code of a table database object. */
int tctdbecode(TCTDB *tdb){
assert(tdb);
return tchdbecode(tdb->hdb);
}
/* Set mutual exclusion control of a table database object for threading. */
bool tctdbsetmutex(TCTDB *tdb){
assert(tdb);
if(!TCUSEPTHREAD) return true;
if(tdb->mmtx || tdb->open){
tctdbsetecode(tdb, TCEINVALID, __FILE__, __LINE__, __func__);
return false;
}
TCMALLOC(tdb->mmtx, sizeof(pthread_rwlock_t));
bool err = false;
if(pthread_rwlock_init(tdb->mmtx, NULL) != 0) err = true;
if(err){
TCFREE(tdb->mmtx);
tdb->mmtx = NULL;
return false;
}
return tchdbsetmutex(tdb->hdb);
}
/* Set the tuning parameters of a table database object. */
bool tctdbtune(TCTDB *tdb, int64_t bnum, int8_t apow, int8_t fpow, uint8_t opts){
assert(tdb);
if(tdb->open){
tctdbsetecode(tdb, TCEINVALID, __FILE__, __LINE__, __func__);
return false;
}
tdb->opts = opts;
uint8_t hopts = 0;
if(opts & TDBTLARGE) hopts |= HDBTLARGE;
if(opts & TDBTDEFLATE) hopts |= HDBTDEFLATE;
if(opts & TDBTBZIP) hopts |= HDBTBZIP;
if(opts & TDBTTCBS) hopts |= HDBTTCBS;
if(opts & TDBTEXCODEC) hopts |= HDBTEXCODEC;
bnum = (bnum > 0) ? bnum : TDBDEFBNUM;
apow = (apow >= 0) ? apow : TDBDEFAPOW;
fpow = (fpow >= 0) ? fpow : TDBDEFFPOW;
return tchdbtune(tdb->hdb, bnum, apow, fpow, hopts);
}
/* Set the caching parameters of a table database object. */
bool tctdbsetcache(TCTDB *tdb, int32_t rcnum, int32_t lcnum, int32_t ncnum){
assert(tdb);
if(tdb->open){
tctdbsetecode(tdb, TCEINVALID, __FILE__, __LINE__, __func__);
return false;
}
if(lcnum > 0) tdb->lcnum = lcnum;
if(ncnum > 0) tdb->ncnum = ncnum;
return tchdbsetcache(tdb->hdb, rcnum);
}
/* Set the size of the extra mapped memory of a table database object. */
bool tctdbsetxmsiz(TCTDB *tdb, int64_t xmsiz){
assert(tdb);
if(tdb->open){
tctdbsetecode(tdb, TCEINVALID, __FILE__, __LINE__, __func__);
return false;
}
return tchdbsetxmsiz(tdb->hdb, xmsiz);
}
/* Set the unit step number of auto defragmentation of a table database object. */
bool tctdbsetdfunit(TCTDB *tdb, int32_t dfunit){
assert(tdb);
if(tdb->open){
tctdbsetecode(tdb, TCEINVALID, __FILE__, __LINE__, __func__);
return false;
}
return tchdbsetdfunit(tdb->hdb, dfunit);
}
/* Open a database file and connect a table database object. */
bool tctdbopen(TCTDB *tdb, const char *path, int omode){
assert(tdb && path);
if(!TDBLOCKMETHOD(tdb, true)) return false;
if(tdb->open){
tctdbsetecode(tdb, TCEINVALID, __FILE__, __LINE__, __func__);
TDBUNLOCKMETHOD(tdb);
return false;
}
bool rv = tctdbopenimpl(tdb, path, omode);
TDBUNLOCKMETHOD(tdb);
return rv;
}
/* Close a table database object. */
bool tctdbclose(TCTDB *tdb){
assert(tdb);
if(!TDBLOCKMETHOD(tdb, true)) return false;
if(!tdb->open){
tctdbsetecode(tdb, TCEINVALID, __FILE__, __LINE__, __func__);
TDBUNLOCKMETHOD(tdb);
return false;
}
bool rv = tctdbcloseimpl(tdb);
TDBUNLOCKMETHOD(tdb);
return rv;
}
/* Store a record into a table database object. */
bool tctdbput(TCTDB *tdb, const void *pkbuf, int pksiz, TCMAP *cols){
assert(tdb && pkbuf && pksiz >= 0 && cols);
int vsiz;
if(tcmapget(cols, "", 0, &vsiz)){
tctdbsetecode(tdb, TCEINVALID, __FILE__, __LINE__, __func__);
return false;
}
if(!TDBLOCKMETHOD(tdb, true)) return false;
if(!tdb->open || !tdb->wmode){
tctdbsetecode(tdb, TCEINVALID, __FILE__, __LINE__, __func__);
TDBUNLOCKMETHOD(tdb);
return false;
}
bool rv = tctdbputimpl(tdb, pkbuf, pksiz, cols, TDBPDOVER);
TDBUNLOCKMETHOD(tdb);
return rv;
}
/* Store a string record into a table database object with a zero separated column string. */
bool tctdbput2(TCTDB *tdb, const void *pkbuf, int pksiz, const void *cbuf, int csiz){
assert(tdb && pkbuf && pksiz >= 0 && cbuf && csiz >= 0);
TCMAP *cols = tcstrsplit4(cbuf, csiz);
bool rv = tctdbput(tdb, pkbuf, pksiz, cols);
tcmapdel(cols);
return rv;
}
/* Store a string record into a table database object with a tab separated column string. */
bool tctdbput3(TCTDB *tdb, const char *pkstr, const char *cstr){
assert(tdb && pkstr && cstr);
TCMAP *cols = tcstrsplit3(cstr, "\t");
bool rv = tctdbput(tdb, pkstr, strlen(pkstr), cols);
tcmapdel(cols);
return rv;
}
/* Store a new record into a table database object. */
bool tctdbputkeep(TCTDB *tdb, const void *pkbuf, int pksiz, TCMAP *cols){
assert(tdb && pkbuf && pksiz >= 0 && cols);
int vsiz;
if(tcmapget(cols, "", 0, &vsiz)){
tctdbsetecode(tdb, TCEINVALID, __FILE__, __LINE__, __func__);
return false;
}
if(!TDBLOCKMETHOD(tdb, true)) return false;
if(!tdb->open || !tdb->wmode){
tctdbsetecode(tdb, TCEINVALID, __FILE__, __LINE__, __func__);
TDBUNLOCKMETHOD(tdb);
return false;
}
bool rv = tctdbputimpl(tdb, pkbuf, pksiz, cols, TDBPDKEEP);
TDBUNLOCKMETHOD(tdb);
return rv;
}
/* Store a new string record into a table database object with a zero separated column string. */
bool tctdbputkeep2(TCTDB *tdb, const void *pkbuf, int pksiz, const void *cbuf, int csiz){
assert(tdb && pkbuf && pksiz >= 0 && cbuf && csiz >= 0);
TCMAP *cols = tcstrsplit4(cbuf, csiz);
bool rv = tctdbputkeep(tdb, pkbuf, pksiz, cols);
tcmapdel(cols);
return rv;
}
/* Store a new string record into a table database object with a tab separated column string. */
bool tctdbputkeep3(TCTDB *tdb, const char *pkstr, const char *cstr){
assert(tdb && pkstr && cstr);
TCMAP *cols = tcstrsplit3(cstr, "\t");
bool rv = tctdbputkeep(tdb, pkstr, strlen(pkstr), cols);
tcmapdel(cols);
return rv;
}
/* Concatenate columns of the existing record in a table database object. */
bool tctdbputcat(TCTDB *tdb, const void *pkbuf, int pksiz, TCMAP *cols){
assert(tdb && pkbuf && pksiz >= 0 && cols);
int vsiz;
if(tcmapget(cols, "", 0, &vsiz)){
tctdbsetecode(tdb, TCEINVALID, __FILE__, __LINE__, __func__);
return false;
}
if(!TDBLOCKMETHOD(tdb, true)) return false;
if(!tdb->open || !tdb->wmode){
tctdbsetecode(tdb, TCEINVALID, __FILE__, __LINE__, __func__);
TDBUNLOCKMETHOD(tdb);
return false;
}
bool rv = tctdbputimpl(tdb, pkbuf, pksiz, cols, TDBPDCAT);
TDBUNLOCKMETHOD(tdb);
return rv;
}
/* Concatenate columns in a table database object with a zero separated column string. */
bool tctdbputcat2(TCTDB *tdb, const void *pkbuf, int pksiz, const void *cbuf, int csiz){
assert(tdb && pkbuf && pksiz >= 0 && cbuf && csiz >= 0);
TCMAP *cols = tcstrsplit4(cbuf, csiz);
bool rv = tctdbputcat(tdb, pkbuf, pksiz, cols);
tcmapdel(cols);
return rv;
}
/* Concatenate columns in a table database object with with a tab separated column string. */
bool tctdbputcat3(TCTDB *tdb, const char *pkstr, const char *cstr){
assert(tdb && pkstr && cstr);
TCMAP *cols = tcstrsplit3(cstr, "\t");
bool rv = tctdbputcat(tdb, pkstr, strlen(pkstr), cols);
tcmapdel(cols);
return rv;
}
/* Merge record */
bool tctdbputmerge(TCTDB *tdb, const void *pkbuf, int pksiz, TCMAP *cols){
assert(tdb && pkbuf && pksiz >= 0 && cols);
int vsiz;
if(tcmapget(cols, "", 0, &vsiz)){
tctdbsetecode(tdb, TCEINVALID, __FILE__, __LINE__, __func__);
return false;
}
if(!TDBLOCKMETHOD(tdb, true)) return false;
if(!tdb->open || !tdb->wmode){
tctdbsetecode(tdb, TCEINVALID, __FILE__, __LINE__, __func__);
TDBUNLOCKMETHOD(tdb);
return false;
}
bool rv = tctdbputimpl(tdb, pkbuf, pksiz, cols, TDBPDMERGE);
TDBUNLOCKMETHOD(tdb);
return rv;
}
/* Merge record with a tab separated column string. */
bool tctdbputmerge3(TCTDB *tdb, const char *pkstr, const char *cstr){
assert(tdb && pkstr && cstr);
TCMAP *cols = tcstrsplit3(cstr, "\t");
bool rv = tctdbputmerge(tdb, pkstr, strlen(pkstr), cols);
tcmapdel(cols);
return rv;
}
/* Remove a record of a table database object. */
bool tctdbout(TCTDB *tdb, const void *pkbuf, int pksiz){
assert(tdb && pkbuf && pksiz >= 0);
if(!TDBLOCKMETHOD(tdb, true)) return false;
if(!tdb->open || !tdb->wmode){
tctdbsetecode(tdb, TCEINVALID, __FILE__, __LINE__, __func__);
TDBUNLOCKMETHOD(tdb);
return false;
}
bool rv = tctdboutimpl(tdb, pkbuf, pksiz);
TDBUNLOCKMETHOD(tdb);
return rv;
}
/* Remove a string record of a table database object. */
bool tctdbout2(TCTDB *tdb, const char *pkstr){
assert(tdb && pkstr);
return tctdbout(tdb, pkstr, strlen(pkstr));
}
/* Retrieve a record in a table database object. */
TCMAP *tctdbget(TCTDB *tdb, const void *pkbuf, int pksiz){
assert(tdb && pkbuf && pksiz >= 0);
if(!TDBLOCKMETHOD(tdb, false)) return NULL;
if(!tdb->open){
tctdbsetecode(tdb, TCEINVALID, __FILE__, __LINE__, __func__);
TDBUNLOCKMETHOD(tdb);
return NULL;
}
TCMAP *rv = tctdbgetimpl(tdb, pkbuf, pksiz);
TDBUNLOCKMETHOD(tdb);
return rv;
}
/* Retrieve a record in a table database object as a zero separated column string. */
char *tctdbget2(TCTDB *tdb, const void *pkbuf, int pksiz, int *sp){
assert(tdb && pkbuf && pksiz >= 0 && sp);
TCMAP *cols = tctdbget(tdb, pkbuf, pksiz);
if(!cols) return NULL;
char *cbuf = tcstrjoin4(cols, sp);
tcmapdel(cols);
return cbuf;
}
/* Retrieve a string record in a table database object as a tab separated column string. */
char *tctdbget3(TCTDB *tdb, const char *pkstr){
assert(tdb && pkstr);
TCMAP *cols = tctdbget(tdb, pkstr, strlen(pkstr));
if(!cols) return NULL;
char *cstr = tcstrjoin3(cols, '\t');
tcmapdel(cols);
return cstr;
}
/* Get the size of the value of a record in a table database object. */
int tctdbvsiz(TCTDB *tdb, const void *pkbuf, int pksiz){
assert(tdb && pkbuf && pksiz >= 0);
if(!TDBLOCKMETHOD(tdb, false)) return -1;
if(!tdb->open){
tctdbsetecode(tdb, TCEINVALID, __FILE__, __LINE__, __func__);
TDBUNLOCKMETHOD(tdb);
return -1;
}
int rv = tchdbvsiz(tdb->hdb, pkbuf, pksiz);
TDBUNLOCKMETHOD(tdb);
return rv;
}
/* Get the size of the value of a string record in a table database object. */
int tctdbvsiz2(TCTDB *tdb, const char *pkstr){
assert(tdb && pkstr);
return tctdbvsiz(tdb, pkstr, strlen(pkstr));
}
/* Initialize the iterator of a table database object. */
bool tctdbiterinit(TCTDB *tdb){
assert(tdb);
if(!TDBLOCKMETHOD(tdb, true)) return false;
if(!tdb->open){
tctdbsetecode(tdb, TCEINVALID, __FILE__, __LINE__, __func__);
TDBUNLOCKMETHOD(tdb);
return false;
}
bool rv = tchdbiterinit(tdb->hdb);
TDBUNLOCKMETHOD(tdb);
return rv;
}
/* Get the next primary key of the iterator of a table database object. */
void *tctdbiternext(TCTDB *tdb, int *sp){
assert(tdb && sp);
if(!TDBLOCKMETHOD(tdb, true)) return NULL;
if(!tdb->open){
tctdbsetecode(tdb, TCEINVALID, __FILE__, __LINE__, __func__);
TDBUNLOCKMETHOD(tdb);
return NULL;
}
char *rv = tchdbiternext(tdb->hdb, sp);
TDBUNLOCKMETHOD(tdb);
return rv;
}
/* Get the next primary key string of the iterator of a table database object. */
char *tctdbiternext2(TCTDB *tdb){
assert(tdb);
int pksiz;
return tctdbiternext(tdb, &pksiz);
}
/* Get the columns of the next record of the iterator of a table database object. */
TCMAP *tctdbiternext3(TCTDB *tdb){
assert(tdb);
TCXSTR *kstr = tcxstrnew();
TCXSTR *vstr = tcxstrnew();
TCMAP *cols = NULL;
if(tchdbiternext3(tdb->hdb, kstr, vstr)){
cols = tcmapload(TCXSTRPTR(vstr), TCXSTRSIZE(vstr));
tcmapput(cols, "", 0, TCXSTRPTR(kstr), TCXSTRSIZE(kstr));
}
tcxstrdel(vstr);
tcxstrdel(kstr);
return cols;
}
/* Get forward matching primary keys in a table database object. */
TCLIST *tctdbfwmkeys(TCTDB *tdb, const void *pbuf, int psiz, int max){
assert(tdb && pbuf && psiz >= 0);
if(!TDBLOCKMETHOD(tdb, true)) return tclistnew();
if(!tdb->open){
tctdbsetecode(tdb, TCEINVALID, __FILE__, __LINE__, __func__);
TDBUNLOCKMETHOD(tdb);
return tclistnew();
}
TCLIST *rv = tchdbfwmkeys(tdb->hdb, pbuf, psiz, max);
TDBUNLOCKMETHOD(tdb);
return rv;
}
/* Get forward matching string primary keys in a table database object. */
TCLIST *tctdbfwmkeys2(TCTDB *tdb, const char *pstr, int max){
assert(tdb && pstr);
return tctdbfwmkeys(tdb, pstr, strlen(pstr), max);
}
/* Add an integer to a column of a record in a table database object. */
int tctdbaddint(TCTDB *tdb, const void *pkbuf, int pksiz, int num){
assert(tdb && pkbuf && pksiz >= 0);
if(!TDBLOCKMETHOD(tdb, true)) return INT_MIN;
if(!tdb->open){
tctdbsetecode(tdb, TCEINVALID, __FILE__, __LINE__, __func__);
TDBUNLOCKMETHOD(tdb);
return INT_MIN;
}
double rv = tctdbaddnumber(tdb, pkbuf, pksiz, num);
TDBUNLOCKMETHOD(tdb);
return isnan(rv) ? INT_MIN : (int)rv;
}
/* Add a real number to a column of a record in a table database object. */
double tctdbadddouble(TCTDB *tdb, const void *pkbuf, int pksiz, double num){
assert(tdb && pkbuf && pksiz >= 0);
if(!TDBLOCKMETHOD(tdb, true)) return INT_MIN;
if(!tdb->open){
tctdbsetecode(tdb, TCEINVALID, __FILE__, __LINE__, __func__);
TDBUNLOCKMETHOD(tdb);
return INT_MIN;
}
double rv = tctdbaddnumber(tdb, pkbuf, pksiz, num);
TDBUNLOCKMETHOD(tdb);
return rv;
}
/* Synchronize updated contents of a table database object with the file and the device. */
bool tctdbsync(TCTDB *tdb){
assert(tdb);
if(!TDBLOCKMETHOD(tdb, true)) return false;
if(!tdb->open || !tdb->wmode || tdb->tran){
tctdbsetecode(tdb, TCEINVALID, __FILE__, __LINE__, __func__);
TDBUNLOCKMETHOD(tdb);
return false;
}
bool rv = tctdbmemsync(tdb, true);
TDBUNLOCKMETHOD(tdb);
return rv;
}
/* Optimize the file of a table database object. */
bool tctdboptimize(TCTDB *tdb, int64_t bnum, int8_t apow, int8_t fpow, uint8_t opts){
assert(tdb);
if(!TDBLOCKMETHOD(tdb, true)) return false;
if(!tdb->open || !tdb->wmode || tdb->tran){
tctdbsetecode(tdb, TCEINVALID, __FILE__, __LINE__, __func__);
TDBUNLOCKMETHOD(tdb);
return false;
}
TDBTHREADYIELD(tdb);
bool rv = tctdboptimizeimpl(tdb, bnum, apow, fpow, opts);
TDBUNLOCKMETHOD(tdb);
return rv;
}
/* Remove all records of a table database object. */
bool tctdbvanish(TCTDB *tdb){
assert(tdb);
if(!TDBLOCKMETHOD(tdb, true)) return false;
if(!tdb->open || !tdb->wmode || tdb->tran){
tctdbsetecode(tdb, TCEINVALID, __FILE__, __LINE__, __func__);
TDBUNLOCKMETHOD(tdb);
return false;
}
TDBTHREADYIELD(tdb);
bool rv = tctdbvanishimpl(tdb);
TDBUNLOCKMETHOD(tdb);
return rv;
}
/* Copy the database file of a table database object. */
bool tctdbcopy(TCTDB *tdb, const char *path){
assert(tdb && path);
if(!TDBLOCKMETHOD(tdb, false)) return false;
if(!tdb->open){
tctdbsetecode(tdb, TCEINVALID, __FILE__, __LINE__, __func__);
TDBUNLOCKMETHOD(tdb);
return false;
}
TDBTHREADYIELD(tdb);
bool rv = tctdbcopyimpl(tdb, path);
TDBUNLOCKMETHOD(tdb);
return rv;
}
/* Begin the transaction of a table database object. */
bool tctdbtranbegin(TCTDB *tdb){
assert(tdb);
for(double wsec = 1.0 / sysconf(_SC_CLK_TCK); true; wsec *= 2){
if(!TDBLOCKMETHOD(tdb, true)) return false;
if(!tdb->open || !tdb->wmode){
tctdbsetecode(tdb, TCEINVALID, __FILE__, __LINE__, __func__);
TDBUNLOCKMETHOD(tdb);
return false;
}
if(!tdb->tran) break;
TDBUNLOCKMETHOD(tdb);
if(wsec > 1.0) wsec = 1.0;
tcsleep(wsec);
}
if(!tctdbtranbeginimpl(tdb)){
TDBUNLOCKMETHOD(tdb);
return false;
}
tdb->tran = true;
TDBUNLOCKMETHOD(tdb);
return true;
}
/* Commit the transaction of a table database object. */
bool tctdbtrancommit(TCTDB *tdb){
assert(tdb);
if(!TDBLOCKMETHOD(tdb, true)) return false;
if(!tdb->open || !tdb->wmode || !tdb->tran){
tctdbsetecode(tdb, TCEINVALID, __FILE__, __LINE__, __func__);
TDBUNLOCKMETHOD(tdb);
return false;
}
tdb->tran = false;
bool err = false;
if(!tctdbtrancommitimpl(tdb)) err = true;
TDBUNLOCKMETHOD(tdb);
return !err;
}
/* Abort the transaction of a table database object. */
bool tctdbtranabort(TCTDB *tdb){
assert(tdb);
if(!TDBLOCKMETHOD(tdb, true)) return false;
if(!tdb->open || !tdb->wmode || !tdb->tran){
tctdbsetecode(tdb, TCEINVALID, __FILE__, __LINE__, __func__);
TDBUNLOCKMETHOD(tdb);
return false;
}
tdb->tran = false;
bool err = false;
if(!tctdbtranabortimpl(tdb)) err = true;
TDBUNLOCKMETHOD(tdb);
return !err;
}
/* Get the file path of a table database object. */
const char *tctdbpath(TCTDB *tdb){
assert(tdb);
if(!TDBLOCKMETHOD(tdb, false)) return NULL;
if(!tdb->open){
tctdbsetecode(tdb, TCEINVALID, __FILE__, __LINE__, __func__);
TDBUNLOCKMETHOD(tdb);
return NULL;
}
const char *rv = tchdbpath(tdb->hdb);
TDBUNLOCKMETHOD(tdb);
return rv;
}
/* Get the number of records of a table database object. */
uint64_t tctdbrnum(TCTDB *tdb){
assert(tdb);
if(!TDBLOCKMETHOD(tdb, false)) return 0;
if(!tdb->open){
tctdbsetecode(tdb, TCEINVALID, __FILE__, __LINE__, __func__);
TDBUNLOCKMETHOD(tdb);
return 0;
}
uint64_t rv = tchdbrnum(tdb->hdb);
TDBUNLOCKMETHOD(tdb);
return rv;
}
/* Get the size of the database file of a table database object. */
uint64_t tctdbfsiz(TCTDB *tdb){
assert(tdb);
if(!TDBLOCKMETHOD(tdb, false)) return 0;
if(!tdb->open){
tctdbsetecode(tdb, TCEINVALID, __FILE__, __LINE__, __func__);
TDBUNLOCKMETHOD(tdb);
return 0;
}
uint64_t rv = tchdbfsiz(tdb->hdb);
TDBIDX *idxs = tdb->idxs;
int inum = tdb->inum;
for(int i = 0; i < inum; i++){
TDBIDX *idx = idxs + i;
switch(idx->type){
case TDBITLEXICAL:
case TDBITDECIMAL:
case TDBITTOKEN:
case TDBITQGRAM:
rv += tcbdbfsiz(idx->db);
break;
}
}
TDBUNLOCKMETHOD(tdb);
return rv;
}
/* Set a column index to a table database object. */
bool tctdbsetindex(TCTDB *tdb, const char *name, int type){
assert(tdb && name);
if(!TDBLOCKMETHOD(tdb, true)) return false;
if(!tdb->open || !tdb->wmode || tdb->tran){
tctdbsetecode(tdb, TCEINVALID, __FILE__, __LINE__, __func__);
TDBUNLOCKMETHOD(tdb);
return false;
}
bool err = false;
double iccsync = tdb->iccsync;
tdb->iccsync = 1.0;
if(!tctdbsetindeximpl(tdb, name, type)) err = true;
if(!tctdbmemsync(tdb, false)) err = true;
tdb->iccsync = iccsync;
TDBUNLOCKMETHOD(tdb);
return !err;
}
/* Generate a unique ID number of a table database object. */
int64_t tctdbgenuid(TCTDB *tdb){
assert(tdb);
if(!TDBLOCKMETHOD(tdb, true)) return -1;
if(!tdb->open || !tdb->wmode){
tctdbsetecode(tdb, TCEINVALID, __FILE__, __LINE__, __func__);
TDBUNLOCKMETHOD(tdb);
return -1;
}
int64_t rv = tctdbgenuidimpl(tdb, 1);
TDBUNLOCKMETHOD(tdb);
return rv;
}
/* Create a query object. */
TDBQRY *tctdbqrynew(TCTDB *tdb){
assert(tdb);
TDBQRY *qry;
TCMALLOC(qry, sizeof(*qry));
qry->tdb = tdb;
TCMALLOC(qry->conds, sizeof(qry->conds[0]) * 2);
qry->cnum = 0;
qry->oname = NULL;
qry->otype = TDBQOSTRASC;
qry->max = INT_MAX;
qry->skip = 0;
qry->hint = tcxstrnew3(TDBHINTUSIZ);
qry->count = 0;
return qry;
}
/* Delete a query object. */
void tctdbqrydel(TDBQRY *qry){
assert(qry);
tcxstrdel(qry->hint);
TCFREE(qry->oname);
TDBCOND *conds = qry->conds;
int cnum = qry->cnum;
for(int i = 0; i < cnum; i++){
TDBCOND *cond = conds + i;
if(cond->ftsunits){
TDBFTSUNIT *ftsunits = cond->ftsunits;
int ftsnum = cond->ftsnum;
for(int j = 0; j < ftsnum; j++){
TDBFTSUNIT *ftsunit = ftsunits + j;
tclistdel(ftsunit->tokens);
}
TCFREE(ftsunits);
}
if(cond->regex){
regfree(cond->regex);
TCFREE(cond->regex);
}
TCFREE(cond->expr);
TCFREE(cond->name);
}
TCFREE(conds);
TCFREE(qry);
}
/* Add a narrowing condition to a query object. */
void tctdbqryaddcond(TDBQRY *qry, const char *name, int op, const char *expr){
assert(qry && name && expr);
int cnum = qry->cnum;
TCREALLOC(qry->conds, qry->conds, sizeof(qry->conds[0]) * (cnum + 1));
TDBCOND *cond = qry->conds + cnum;
int nsiz = strlen(name);
int esiz = strlen(expr);
TCMEMDUP(cond->name, name, nsiz);
cond->nsiz = nsiz;
bool sign = true;
if(op & TDBQCNEGATE){
op &= ~TDBQCNEGATE;
sign = false;
}
bool noidx = false;
if(op & TDBQCNOIDX){
op &= ~TDBQCNOIDX;
noidx = true;
}
cond->op = op;
cond->sign = sign;
cond->noidx = noidx;
TCMEMDUP(cond->expr, expr, esiz);
cond->esiz = esiz;
cond->regex = NULL;
if(op == TDBQCSTRRX){
const char *rxstr = expr;
int rxopt = REG_EXTENDED | REG_NOSUB;
if(*rxstr == '*'){
rxopt |= REG_ICASE;
rxstr++;
}
regex_t rxbuf;
if(regcomp(&rxbuf, rxstr, rxopt) == 0){
TCMALLOC(cond->regex, sizeof(rxbuf));
memcpy(cond->regex, &rxbuf, sizeof(rxbuf));
}
}
cond->ftsunits = NULL;
cond->ftsnum = 0;
if(op >= TDBQCFTSPH && op <= TDBQCFTSEX){
cond->op = TDBQCFTSPH;
cond->ftsunits = tctdbftsparseexpr(expr, esiz, op, &(cond->ftsnum));
}
qry->cnum++;
}
/* Set the order of a query object. */
void tctdbqrysetorder(TDBQRY *qry, const char *name, int type){
assert(qry && name);
if(qry->oname) TCFREE(qry->oname);
qry->oname = tcstrdup(name);
qry->otype = type;
}
/* Set the limit number of records of the result of a query object. */
void tctdbqrysetlimit(TDBQRY *qry, int max, int skip){
assert(qry);
qry->max = (max >= 0) ? max : INT_MAX;
qry->skip = (skip > 0) ? skip : 0;
}
/* Execute the search of a query object. */
TCLIST *tctdbqrysearch(TDBQRY *qry){
assert(qry);
TCTDB *tdb = qry->tdb;
if(!TDBLOCKMETHOD(tdb, false)) return tclistnew();
if(!tdb->open){
tctdbsetecode(tdb, TCEINVALID, __FILE__, __LINE__, __func__);
TDBUNLOCKMETHOD(tdb);
return tclistnew();
}
TCLIST *rv = tctdbqrysearchimpl(qry);
TDBUNLOCKMETHOD(tdb);
return rv;
}
/* Remove each record corresponding to a query object. */
bool tctdbqrysearchout(TDBQRY *qry){
assert(qry);
return tctdbqryproc(qry, tctdbqryprocoutcb, NULL);
}
/* Process each record corresponding to a query object. */