PostgreSQL Source Code  git master
hstore_gist.c File Reference
#include "postgres.h"
#include "access/gist.h"
#include "access/reloptions.h"
#include "access/stratnum.h"
#include "catalog/pg_type.h"
#include "common/int.h"
#include "hstore.h"
#include "utils/pg_crc.h"
Include dependency graph for hstore_gist.c:

Go to the source code of this file.

Data Structures

struct  GistHstoreOptions
 
struct  GISTTYPE
 
struct  SPLITCOST
 

Macros

#define BITBYTE   8
 
#define SIGLEN_DEFAULT   (sizeof(int32) * 4)
 
#define SIGLEN_MAX   GISTMaxIndexKeySize
 
#define SIGLENBIT(siglen)   ((siglen) * BITBYTE)
 
#define GET_SIGLEN()
 
#define LOOPBYTE(siglen)    for (i = 0; i < (siglen); i++)
 
#define LOOPBIT(siglen)    for (i = 0; i < SIGLENBIT(siglen); i++)
 
#define GETBYTE(x, i)   ( *( (BITVECP)(x) + (int)( (i) / BITBYTE ) ) )
 
#define GETBITBYTE(x, i)   ( (*((char*)(x)) >> (i)) & 0x01 )
 
#define CLRBIT(x, i)   GETBYTE(x,i) &= ~( 0x01 << ( (i) % BITBYTE ) )
 
#define SETBIT(x, i)   GETBYTE(x,i) |= ( 0x01 << ( (i) % BITBYTE ) )
 
#define GETBIT(x, i)   ( (GETBYTE(x,i) >> ( (i) % BITBYTE )) & 0x01 )
 
#define HASHVAL(val, siglen)   (((unsigned int)(val)) % SIGLENBIT(siglen))
 
#define HASH(sign, val, siglen)   SETBIT((sign), HASHVAL(val, siglen))
 
#define ALLISTRUE   0x04
 
#define ISALLTRUE(x)   ( ((GISTTYPE*)x)->flag & ALLISTRUE )
 
#define GTHDRSIZE   (VARHDRSZ + sizeof(int32))
 
#define CALCGTSIZE(flag, siglen)   ( GTHDRSIZE+(((flag) & ALLISTRUE) ? 0 : (siglen)) )
 
#define GETSIGN(x)   ( (BITVECP)( (char*)x+GTHDRSIZE ) )
 
#define SUMBIT(val)
 
#define GETENTRY(vec, pos)   ((GISTTYPE *) DatumGetPointer((vec)->vector[(pos)].key))
 
#define WISH_F(a, b, c)   (double)( -(double)(((a)-(b))*((a)-(b))*((a)-(b)))*(c) )
 

Typedefs

typedef char * BITVECP
 

Functions

static pg_crc32 crc32_sz (const char *buf, int size)
 
 PG_FUNCTION_INFO_V1 (ghstore_in)
 
 PG_FUNCTION_INFO_V1 (ghstore_out)
 
Datum ghstore_in (PG_FUNCTION_ARGS)
 
Datum ghstore_out (PG_FUNCTION_ARGS)
 
static GISTTYPEghstore_alloc (bool allistrue, int siglen, BITVECP sign)
 
 PG_FUNCTION_INFO_V1 (ghstore_consistent)
 
 PG_FUNCTION_INFO_V1 (ghstore_compress)
 
 PG_FUNCTION_INFO_V1 (ghstore_decompress)
 
 PG_FUNCTION_INFO_V1 (ghstore_penalty)
 
 PG_FUNCTION_INFO_V1 (ghstore_picksplit)
 
 PG_FUNCTION_INFO_V1 (ghstore_union)
 
 PG_FUNCTION_INFO_V1 (ghstore_same)
 
 PG_FUNCTION_INFO_V1 (ghstore_options)
 
Datum ghstore_compress (PG_FUNCTION_ARGS)
 
Datum ghstore_decompress (PG_FUNCTION_ARGS)
 
Datum ghstore_same (PG_FUNCTION_ARGS)
 
static int32 sizebitvec (BITVECP sign, int siglen)
 
static int hemdistsign (BITVECP a, BITVECP b, int siglen)
 
static int hemdist (GISTTYPE *a, GISTTYPE *b, int siglen)
 
static int32 unionkey (BITVECP sbase, GISTTYPE *add, int siglen)
 
Datum ghstore_union (PG_FUNCTION_ARGS)
 
Datum ghstore_penalty (PG_FUNCTION_ARGS)
 
static int comparecost (const void *a, const void *b)
 
Datum ghstore_picksplit (PG_FUNCTION_ARGS)
 
Datum ghstore_consistent (PG_FUNCTION_ARGS)
 
Datum ghstore_options (PG_FUNCTION_ARGS)
 

Macro Definition Documentation

◆ ALLISTRUE

#define ALLISTRUE   0x04

Definition at line 55 of file hstore_gist.c.

◆ BITBYTE

#define BITBYTE   8

Definition at line 22 of file hstore_gist.c.

◆ CALCGTSIZE

#define CALCGTSIZE (   flag,
  siglen 
)    ( GTHDRSIZE+(((flag) & ALLISTRUE) ? 0 : (siglen)) )

Definition at line 60 of file hstore_gist.c.

◆ CLRBIT

#define CLRBIT (   x,
  i 
)    GETBYTE(x,i) &= ~( 0x01 << ( (i) % BITBYTE ) )

Definition at line 42 of file hstore_gist.c.

◆ GET_SIGLEN

#define GET_SIGLEN ( )
Value:
#define PG_GET_OPCLASS_OPTIONS()
Definition: fmgr.h:342
#define PG_HAS_OPCLASS_OPTIONS()
Definition: fmgr.h:341
#define SIGLEN_DEFAULT
Definition: hstore_gist.c:23

Definition at line 26 of file hstore_gist.c.

◆ GETBIT

#define GETBIT (   x,
  i 
)    ( (GETBYTE(x,i) >> ( (i) % BITBYTE )) & 0x01 )

Definition at line 44 of file hstore_gist.c.

◆ GETBITBYTE

#define GETBITBYTE (   x,
  i 
)    ( (*((char*)(x)) >> (i)) & 0x01 )

Definition at line 41 of file hstore_gist.c.

◆ GETBYTE

#define GETBYTE (   x,
  i 
)    ( *( (BITVECP)(x) + (int)( (i) / BITBYTE ) ) )

Definition at line 40 of file hstore_gist.c.

◆ GETENTRY

#define GETENTRY (   vec,
  pos 
)    ((GISTTYPE *) DatumGetPointer((vec)->vector[(pos)].key))

Definition at line 75 of file hstore_gist.c.

◆ GETSIGN

#define GETSIGN (   x)    ( (BITVECP)( (char*)x+GTHDRSIZE ) )

Definition at line 62 of file hstore_gist.c.

◆ GTHDRSIZE

#define GTHDRSIZE   (VARHDRSZ + sizeof(int32))

Definition at line 59 of file hstore_gist.c.

◆ HASH

#define HASH (   sign,
  val,
  siglen 
)    SETBIT((sign), HASHVAL(val, siglen))

Definition at line 46 of file hstore_gist.c.

◆ HASHVAL

#define HASHVAL (   val,
  siglen 
)    (((unsigned int)(val)) % SIGLENBIT(siglen))

Definition at line 45 of file hstore_gist.c.

◆ ISALLTRUE

#define ISALLTRUE (   x)    ( ((GISTTYPE*)x)->flag & ALLISTRUE )

Definition at line 57 of file hstore_gist.c.

◆ LOOPBIT

#define LOOPBIT (   siglen)     for (i = 0; i < SIGLENBIT(siglen); i++)

Definition at line 36 of file hstore_gist.c.

◆ LOOPBYTE

#define LOOPBYTE (   siglen)     for (i = 0; i < (siglen); i++)

Definition at line 33 of file hstore_gist.c.

◆ SETBIT

#define SETBIT (   x,
  i 
)    GETBYTE(x,i) |= ( 0x01 << ( (i) % BITBYTE ) )

Definition at line 43 of file hstore_gist.c.

◆ SIGLEN_DEFAULT

#define SIGLEN_DEFAULT   (sizeof(int32) * 4)

Definition at line 23 of file hstore_gist.c.

◆ SIGLEN_MAX

#define SIGLEN_MAX   GISTMaxIndexKeySize

Definition at line 24 of file hstore_gist.c.

◆ SIGLENBIT

#define SIGLENBIT (   siglen)    ((siglen) * BITBYTE)

Definition at line 25 of file hstore_gist.c.

◆ SUMBIT

#define SUMBIT (   val)
Value:
( \
GETBITBYTE((val),0) + \
GETBITBYTE((val),1) + \
GETBITBYTE((val),2) + \
GETBITBYTE((val),3) + \
GETBITBYTE((val),4) + \
GETBITBYTE((val),5) + \
GETBITBYTE((val),6) + \
GETBITBYTE((val),7) \
)
long val
Definition: informix.c:664

Definition at line 64 of file hstore_gist.c.

◆ WISH_F

#define WISH_F (   a,
  b,
  c 
)    (double)( -(double)(((a)-(b))*((a)-(b))*((a)-(b)))*(c) )

Definition at line 77 of file hstore_gist.c.

Typedef Documentation

◆ BITVECP

typedef char* BITVECP

Definition at line 31 of file hstore_gist.c.

Function Documentation

◆ comparecost()

static int comparecost ( const void *  a,
const void *  b 
)
static

Definition at line 358 of file hstore_gist.c.

359 {
360  return pg_cmp_s32(((const SPLITCOST *) a)->cost,
361  ((const SPLITCOST *) b)->cost);
362 }
static int pg_cmp_s32(int32 a, int32 b)
Definition: int.h:483
int b
Definition: isn.c:70
int a
Definition: isn.c:69

References a, b, and pg_cmp_s32().

Referenced by ghstore_picksplit().

◆ crc32_sz()

static pg_crc32 crc32_sz ( const char *  buf,
int  size 
)
static

Definition at line 81 of file hstore_gist.c.

82 {
83  pg_crc32 crc;
84 
88 
89  return crc;
90 }
return crc
uint32 pg_crc32
Definition: pg_crc.h:37
#define FIN_TRADITIONAL_CRC32(crc)
Definition: pg_crc.h:47
#define INIT_TRADITIONAL_CRC32(crc)
Definition: pg_crc.h:46
#define COMP_TRADITIONAL_CRC32(crc, data, len)
Definition: pg_crc.h:48
static char * buf
Definition: pg_test_fsync.c:73

References buf, COMP_TRADITIONAL_CRC32, crc, FIN_TRADITIONAL_CRC32, and INIT_TRADITIONAL_CRC32.

Referenced by ghstore_compress(), and ghstore_consistent().

◆ ghstore_alloc()

static GISTTYPE* ghstore_alloc ( bool  allistrue,
int  siglen,
BITVECP  sign 
)
static

Definition at line 118 of file hstore_gist.c.

119 {
120  int flag = allistrue ? ALLISTRUE : 0;
121  int size = CALCGTSIZE(flag, siglen);
122  GISTTYPE *res = palloc(size);
123 
124  SET_VARSIZE(res, size);
125  res->flag = flag;
126 
127  if (!allistrue)
128  {
129  if (sign)
130  memcpy(GETSIGN(res), sign, siglen);
131  else
132  memset(GETSIGN(res), 0, siglen);
133  }
134 
135  return res;
136 }
#define ALLISTRUE
Definition: hstore_gist.c:55
#define CALCGTSIZE(flag, siglen)
Definition: hstore_gist.c:60
#define GETSIGN(x)
Definition: hstore_gist.c:62
char sign
Definition: informix.c:668
void * palloc(Size size)
Definition: mcxt.c:1201
char * flag(int b)
Definition: test-ctype.c:33
#define SET_VARSIZE(PTR, len)
Definition: varatt.h:305

References ALLISTRUE, CALCGTSIZE, flag(), GETSIGN, palloc(), res, SET_VARSIZE, and sign.

Referenced by ghstore_compress(), ghstore_picksplit(), and ghstore_union().

◆ ghstore_compress()

Datum ghstore_compress ( PG_FUNCTION_ARGS  )

Definition at line 148 of file hstore_gist.c.

149 {
150  GISTENTRY *entry = (GISTENTRY *) PG_GETARG_POINTER(0);
151  int siglen = GET_SIGLEN();
152  GISTENTRY *retval = entry;
153 
154  if (entry->leafkey)
155  {
156  GISTTYPE *res = ghstore_alloc(false, siglen, NULL);
157  HStore *val = DatumGetHStoreP(entry->key);
158  HEntry *hsent = ARRPTR(val);
159  char *ptr = STRPTR(val);
160  int count = HS_COUNT(val);
161  int i;
162 
163  for (i = 0; i < count; ++i)
164  {
165  int h;
166 
167  h = crc32_sz((char *) HSTORE_KEY(hsent, ptr, i),
168  HSTORE_KEYLEN(hsent, i));
169  HASH(GETSIGN(res), h, siglen);
170  if (!HSTORE_VALISNULL(hsent, i))
171  {
172  h = crc32_sz((char *) HSTORE_VAL(hsent, ptr, i),
173  HSTORE_VALLEN(hsent, i));
174  HASH(GETSIGN(res), h, siglen);
175  }
176  }
177 
178  retval = (GISTENTRY *) palloc(sizeof(GISTENTRY));
180  entry->rel, entry->page,
181  entry->offset,
182  false);
183  }
184  else if (!ISALLTRUE(DatumGetPointer(entry->key)))
185  {
186  int32 i;
187  GISTTYPE *res;
189 
190  LOOPBYTE(siglen)
191  {
192  if ((sign[i] & 0xff) != 0xff)
193  PG_RETURN_POINTER(retval);
194  }
195 
196  res = ghstore_alloc(true, siglen, NULL);
197 
198  retval = (GISTENTRY *) palloc(sizeof(GISTENTRY));
200  entry->rel, entry->page,
201  entry->offset,
202  false);
203  }
204 
205  PG_RETURN_POINTER(retval);
206 }
signed int int32
Definition: c.h:483
#define ARRPTR(x)
Definition: cube.c:25
#define PG_GETARG_POINTER(n)
Definition: fmgr.h:276
#define PG_RETURN_POINTER(x)
Definition: fmgr.h:361
#define gistentryinit(e, k, r, pg, o, l)
Definition: gist.h:244
#define DatumGetHStoreP(d)
Definition: hstore.h:152
#define HS_COUNT(hsp_)
Definition: hstore.h:61
#define HSTORE_KEY(arr_, str_, i_)
Definition: hstore.h:79
#define HSTORE_VALISNULL(arr_, i_)
Definition: hstore.h:83
#define HSTORE_VALLEN(arr_, i_)
Definition: hstore.h:82
#define HSTORE_KEYLEN(arr_, i_)
Definition: hstore.h:81
#define HSTORE_VAL(arr_, str_, i_)
Definition: hstore.h:80
#define STRPTR(x)
Definition: hstore.h:76
#define LOOPBYTE(siglen)
Definition: hstore_gist.c:33
#define ISALLTRUE(x)
Definition: hstore_gist.c:57
static GISTTYPE * ghstore_alloc(bool allistrue, int siglen, BITVECP sign)
Definition: hstore_gist.c:118
char * BITVECP
Definition: hstore_gist.c:31
#define GET_SIGLEN()
Definition: hstore_gist.c:26
static pg_crc32 crc32_sz(const char *buf, int size)
Definition: hstore_gist.c:81
#define HASH(sign, val, siglen)
Definition: hstore_gist.c:46
int i
Definition: isn.c:73
static Datum PointerGetDatum(const void *X)
Definition: postgres.h:322
static Pointer DatumGetPointer(Datum X)
Definition: postgres.h:312
OffsetNumber offset
Definition: gist.h:163
Datum key
Definition: gist.h:160
Page page
Definition: gist.h:162
Relation rel
Definition: gist.h:161
bool leafkey
Definition: gist.h:164
Definition: hstore.h:19
Definition: hstore.h:45

References ARRPTR, crc32_sz(), DatumGetHStoreP, DatumGetPointer(), GET_SIGLEN, GETSIGN, ghstore_alloc(), gistentryinit, HASH, HS_COUNT, HSTORE_KEY, HSTORE_KEYLEN, HSTORE_VAL, HSTORE_VALISNULL, HSTORE_VALLEN, i, ISALLTRUE, GISTENTRY::key, GISTENTRY::leafkey, LOOPBYTE, GISTENTRY::offset, GISTENTRY::page, palloc(), PG_GETARG_POINTER, PG_RETURN_POINTER, PointerGetDatum(), GISTENTRY::rel, res, sign, STRPTR, and val.

◆ ghstore_consistent()

Datum ghstore_consistent ( PG_FUNCTION_ARGS  )

Definition at line 509 of file hstore_gist.c.

510 {
511  GISTTYPE *entry = (GISTTYPE *) DatumGetPointer(((GISTENTRY *) PG_GETARG_POINTER(0))->key);
513 
514  /* Oid subtype = PG_GETARG_OID(3); */
515  bool *recheck = (bool *) PG_GETARG_POINTER(4);
516  int siglen = GET_SIGLEN();
517  bool res = true;
518  BITVECP sign;
519 
520  /* All cases served by this function are inexact */
521  *recheck = true;
522 
523  if (ISALLTRUE(entry))
524  PG_RETURN_BOOL(true);
525 
526  sign = GETSIGN(entry);
527 
528  if (strategy == HStoreContainsStrategyNumber ||
530  {
531  HStore *query = PG_GETARG_HSTORE_P(1);
532  HEntry *qe = ARRPTR(query);
533  char *qv = STRPTR(query);
534  int count = HS_COUNT(query);
535  int i;
536 
537  for (i = 0; res && i < count; ++i)
538  {
539  int crc = crc32_sz((char *) HSTORE_KEY(qe, qv, i),
540  HSTORE_KEYLEN(qe, i));
541 
542  if (GETBIT(sign, HASHVAL(crc, siglen)))
543  {
544  if (!HSTORE_VALISNULL(qe, i))
545  {
546  crc = crc32_sz((char *) HSTORE_VAL(qe, qv, i),
547  HSTORE_VALLEN(qe, i));
548  if (!GETBIT(sign, HASHVAL(crc, siglen)))
549  res = false;
550  }
551  }
552  else
553  res = false;
554  }
555  }
556  else if (strategy == HStoreExistsStrategyNumber)
557  {
558  text *query = PG_GETARG_TEXT_PP(1);
559  int crc = crc32_sz(VARDATA_ANY(query), VARSIZE_ANY_EXHDR(query));
560 
561  res = (GETBIT(sign, HASHVAL(crc, siglen))) ? true : false;
562  }
563  else if (strategy == HStoreExistsAllStrategyNumber)
564  {
565  ArrayType *query = PG_GETARG_ARRAYTYPE_P(1);
566  Datum *key_datums;
567  bool *key_nulls;
568  int key_count;
569  int i;
570 
571  deconstruct_array_builtin(query, TEXTOID, &key_datums, &key_nulls, &key_count);
572 
573  for (i = 0; res && i < key_count; ++i)
574  {
575  int crc;
576 
577  if (key_nulls[i])
578  continue;
579  crc = crc32_sz(VARDATA(key_datums[i]), VARSIZE(key_datums[i]) - VARHDRSZ);
580  if (!(GETBIT(sign, HASHVAL(crc, siglen))))
581  res = false;
582  }
583  }
584  else if (strategy == HStoreExistsAnyStrategyNumber)
585  {
586  ArrayType *query = PG_GETARG_ARRAYTYPE_P(1);
587  Datum *key_datums;
588  bool *key_nulls;
589  int key_count;
590  int i;
591 
592  deconstruct_array_builtin(query, TEXTOID, &key_datums, &key_nulls, &key_count);
593 
594  res = false;
595 
596  for (i = 0; !res && i < key_count; ++i)
597  {
598  int crc;
599 
600  if (key_nulls[i])
601  continue;
602  crc = crc32_sz(VARDATA(key_datums[i]), VARSIZE(key_datums[i]) - VARHDRSZ);
603  if (GETBIT(sign, HASHVAL(crc, siglen)))
604  res = true;
605  }
606  }
607  else
608  elog(ERROR, "Unsupported strategy number: %d", strategy);
609 
611 }
#define PG_GETARG_ARRAYTYPE_P(n)
Definition: array.h:263
void deconstruct_array_builtin(ArrayType *array, Oid elmtype, Datum **elemsp, bool **nullsp, int *nelemsp)
Definition: arrayfuncs.c:3679
#define VARHDRSZ
Definition: c.h:681
#define ERROR
Definition: elog.h:39
#define PG_GETARG_TEXT_PP(n)
Definition: fmgr.h:309
#define PG_GETARG_UINT16(n)
Definition: fmgr.h:272
#define PG_RETURN_BOOL(x)
Definition: fmgr.h:359
#define HStoreExistsAllStrategyNumber
Definition: hstore.h:183
#define HStoreExistsStrategyNumber
Definition: hstore.h:181
#define PG_GETARG_HSTORE_P(x)
Definition: hstore.h:154
#define HStoreOldContainsStrategyNumber
Definition: hstore.h:184
#define HStoreExistsAnyStrategyNumber
Definition: hstore.h:182
#define HStoreContainsStrategyNumber
Definition: hstore.h:180
#define HASHVAL(val, siglen)
Definition: hstore_gist.c:45
#define GETBIT(x, i)
Definition: hstore_gist.c:44
uintptr_t Datum
Definition: postgres.h:64
uint16 StrategyNumber
Definition: stratnum.h:22
Definition: c.h:676
#define VARDATA(PTR)
Definition: varatt.h:278
#define VARDATA_ANY(PTR)
Definition: varatt.h:324
#define VARSIZE(PTR)
Definition: varatt.h:279
#define VARSIZE_ANY_EXHDR(PTR)
Definition: varatt.h:317

References ARRPTR, crc, crc32_sz(), DatumGetPointer(), deconstruct_array_builtin(), elog(), ERROR, GET_SIGLEN, GETBIT, GETSIGN, HASHVAL, HS_COUNT, HSTORE_KEY, HSTORE_KEYLEN, HSTORE_VAL, HSTORE_VALISNULL, HSTORE_VALLEN, HStoreContainsStrategyNumber, HStoreExistsAllStrategyNumber, HStoreExistsAnyStrategyNumber, HStoreExistsStrategyNumber, HStoreOldContainsStrategyNumber, i, ISALLTRUE, PG_GETARG_ARRAYTYPE_P, PG_GETARG_HSTORE_P, PG_GETARG_POINTER, PG_GETARG_TEXT_PP, PG_GETARG_UINT16, PG_RETURN_BOOL, res, sign, STRPTR, VARDATA, VARDATA_ANY, VARHDRSZ, VARSIZE, and VARSIZE_ANY_EXHDR.

◆ ghstore_decompress()

Datum ghstore_decompress ( PG_FUNCTION_ARGS  )

Definition at line 213 of file hstore_gist.c.

214 {
216 }

References PG_GETARG_POINTER, and PG_RETURN_POINTER.

◆ ghstore_in()

Datum ghstore_in ( PG_FUNCTION_ARGS  )

Definition at line 98 of file hstore_gist.c.

99 {
100  ereport(ERROR,
101  (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
102  errmsg("cannot accept a value of type %s", "ghstore")));
103 
104  PG_RETURN_VOID(); /* keep compiler quiet */
105 }
int errcode(int sqlerrcode)
Definition: elog.c:860
int errmsg(const char *fmt,...)
Definition: elog.c:1075
#define ereport(elevel,...)
Definition: elog.h:149
#define PG_RETURN_VOID()
Definition: fmgr.h:349

References ereport, errcode(), errmsg(), ERROR, and PG_RETURN_VOID.

◆ ghstore_options()

Datum ghstore_options ( PG_FUNCTION_ARGS  )

Definition at line 614 of file hstore_gist.c.

615 {
617 
618  init_local_reloptions(relopts, sizeof(GistHstoreOptions));
619  add_local_int_reloption(relopts, "siglen",
620  "signature length in bytes",
622  offsetof(GistHstoreOptions, siglen));
623 
624  PG_RETURN_VOID();
625 }
#define SIGLEN_MAX
Definition: hstore_gist.c:24
void init_local_reloptions(local_relopts *relopts, Size relopt_struct_size)
Definition: reloptions.c:736
void add_local_int_reloption(local_relopts *relopts, const char *name, const char *desc, int default_val, int min_val, int max_val, int offset)
Definition: reloptions.c:920

References add_local_int_reloption(), init_local_reloptions(), PG_GETARG_POINTER, PG_RETURN_VOID, SIGLEN_DEFAULT, and SIGLEN_MAX.

◆ ghstore_out()

Datum ghstore_out ( PG_FUNCTION_ARGS  )

Definition at line 108 of file hstore_gist.c.

109 {
110  ereport(ERROR,
111  (errcode(ERRCODE_FEATURE_NOT_SUPPORTED),
112  errmsg("cannot display a value of type %s", "ghstore")));
113 
114  PG_RETURN_VOID(); /* keep compiler quiet */
115 }

References ereport, errcode(), errmsg(), ERROR, and PG_RETURN_VOID.

◆ ghstore_penalty()

Datum ghstore_penalty ( PG_FUNCTION_ARGS  )

Definition at line 337 of file hstore_gist.c.

338 {
339  GISTENTRY *origentry = (GISTENTRY *) PG_GETARG_POINTER(0); /* always ISSIGNKEY */
340  GISTENTRY *newentry = (GISTENTRY *) PG_GETARG_POINTER(1);
341  float *penalty = (float *) PG_GETARG_POINTER(2);
342  int siglen = GET_SIGLEN();
343  GISTTYPE *origval = (GISTTYPE *) DatumGetPointer(origentry->key);
344  GISTTYPE *newval = (GISTTYPE *) DatumGetPointer(newentry->key);
345 
346  *penalty = hemdist(origval, newval, siglen);
347  PG_RETURN_POINTER(penalty);
348 }
#define newval
static int hemdist(GISTTYPE *a, GISTTYPE *b, int siglen)
Definition: hstore_gist.c:281

References DatumGetPointer(), GET_SIGLEN, hemdist(), GISTENTRY::key, newval, PG_GETARG_POINTER, and PG_RETURN_POINTER.

◆ ghstore_picksplit()

Datum ghstore_picksplit ( PG_FUNCTION_ARGS  )

Definition at line 366 of file hstore_gist.c.

367 {
369  OffsetNumber maxoff = entryvec->n - 2;
370 
372  int siglen = GET_SIGLEN();
373  OffsetNumber k,
374  j;
375  GISTTYPE *datum_l,
376  *datum_r;
377  BITVECP union_l,
378  union_r;
379  int32 size_alpha,
380  size_beta;
381  int32 size_waste,
382  waste = -1;
383  int32 nbytes;
384  OffsetNumber seed_1 = 0,
385  seed_2 = 0;
386  OffsetNumber *left,
387  *right;
388  BITVECP ptr;
389  int i;
390  SPLITCOST *costvector;
391  GISTTYPE *_k,
392  *_j;
393 
394  nbytes = (maxoff + 2) * sizeof(OffsetNumber);
395  v->spl_left = (OffsetNumber *) palloc(nbytes);
396  v->spl_right = (OffsetNumber *) palloc(nbytes);
397 
398  for (k = FirstOffsetNumber; k < maxoff; k = OffsetNumberNext(k))
399  {
400  _k = GETENTRY(entryvec, k);
401  for (j = OffsetNumberNext(k); j <= maxoff; j = OffsetNumberNext(j))
402  {
403  size_waste = hemdist(_k, GETENTRY(entryvec, j), siglen);
404  if (size_waste > waste)
405  {
406  waste = size_waste;
407  seed_1 = k;
408  seed_2 = j;
409  }
410  }
411  }
412 
413  left = v->spl_left;
414  v->spl_nleft = 0;
415  right = v->spl_right;
416  v->spl_nright = 0;
417 
418  if (seed_1 == 0 || seed_2 == 0)
419  {
420  seed_1 = 1;
421  seed_2 = 2;
422  }
423 
424  /* form initial .. */
425  datum_l = ghstore_alloc(ISALLTRUE(GETENTRY(entryvec, seed_1)), siglen,
426  GETSIGN(GETENTRY(entryvec, seed_1)));
427  datum_r = ghstore_alloc(ISALLTRUE(GETENTRY(entryvec, seed_2)), siglen,
428  GETSIGN(GETENTRY(entryvec, seed_2)));
429 
430  maxoff = OffsetNumberNext(maxoff);
431  /* sort before ... */
432  costvector = (SPLITCOST *) palloc(sizeof(SPLITCOST) * maxoff);
433  for (j = FirstOffsetNumber; j <= maxoff; j = OffsetNumberNext(j))
434  {
435  costvector[j - 1].pos = j;
436  _j = GETENTRY(entryvec, j);
437  size_alpha = hemdist(datum_l, _j, siglen);
438  size_beta = hemdist(datum_r, _j, siglen);
439  costvector[j - 1].cost = abs(size_alpha - size_beta);
440  }
441  qsort(costvector, maxoff, sizeof(SPLITCOST), comparecost);
442 
443  union_l = GETSIGN(datum_l);
444  union_r = GETSIGN(datum_r);
445 
446  for (k = 0; k < maxoff; k++)
447  {
448  j = costvector[k].pos;
449  if (j == seed_1)
450  {
451  *left++ = j;
452  v->spl_nleft++;
453  continue;
454  }
455  else if (j == seed_2)
456  {
457  *right++ = j;
458  v->spl_nright++;
459  continue;
460  }
461  _j = GETENTRY(entryvec, j);
462  size_alpha = hemdist(datum_l, _j, siglen);
463  size_beta = hemdist(datum_r, _j, siglen);
464 
465  if (size_alpha < size_beta + WISH_F(v->spl_nleft, v->spl_nright, 0.0001))
466  {
467  if (ISALLTRUE(datum_l) || ISALLTRUE(_j))
468  {
469  if (!ISALLTRUE(datum_l))
470  memset(union_l, 0xff, siglen);
471  }
472  else
473  {
474  ptr = GETSIGN(_j);
475  LOOPBYTE(siglen)
476  union_l[i] |= ptr[i];
477  }
478  *left++ = j;
479  v->spl_nleft++;
480  }
481  else
482  {
483  if (ISALLTRUE(datum_r) || ISALLTRUE(_j))
484  {
485  if (!ISALLTRUE(datum_r))
486  memset(union_r, 0xff, siglen);
487  }
488  else
489  {
490  ptr = GETSIGN(_j);
491  LOOPBYTE(siglen)
492  union_r[i] |= ptr[i];
493  }
494  *right++ = j;
495  v->spl_nright++;
496  }
497  }
498 
499  *right = *left = FirstOffsetNumber;
500 
501  v->spl_ldatum = PointerGetDatum(datum_l);
502  v->spl_rdatum = PointerGetDatum(datum_r);
503 
505 }
#define WISH_F(a, b, c)
Definition: hstore_gist.c:77
#define GETENTRY(vec, pos)
Definition: hstore_gist.c:75
static int comparecost(const void *a, const void *b)
Definition: hstore_gist.c:358
int j
Definition: isn.c:74
#define OffsetNumberNext(offsetNumber)
Definition: off.h:52
uint16 OffsetNumber
Definition: off.h:24
#define FirstOffsetNumber
Definition: off.h:27
#define qsort(a, b, c, d)
Definition: port.h:449
int spl_nleft
Definition: gist.h:143
OffsetNumber * spl_right
Definition: gist.h:147
Datum spl_ldatum
Definition: gist.h:144
Datum spl_rdatum
Definition: gist.h:149
int spl_nright
Definition: gist.h:148
OffsetNumber * spl_left
Definition: gist.h:142
int32 n
Definition: gist.h:235
int32 cost
Definition: hstore_gist.c:354
OffsetNumber pos
Definition: hstore_gist.c:353

References comparecost(), SPLITCOST::cost, FirstOffsetNumber, GET_SIGLEN, GETENTRY, GETSIGN, ghstore_alloc(), hemdist(), i, ISALLTRUE, j, LOOPBYTE, GistEntryVector::n, OffsetNumberNext, palloc(), PG_GETARG_POINTER, PG_RETURN_POINTER, PointerGetDatum(), SPLITCOST::pos, qsort, GIST_SPLITVEC::spl_ldatum, GIST_SPLITVEC::spl_left, GIST_SPLITVEC::spl_nleft, GIST_SPLITVEC::spl_nright, GIST_SPLITVEC::spl_rdatum, GIST_SPLITVEC::spl_right, and WISH_F.

◆ ghstore_same()

Datum ghstore_same ( PG_FUNCTION_ARGS  )

Definition at line 219 of file hstore_gist.c.

220 {
223  bool *result = (bool *) PG_GETARG_POINTER(2);
224  int siglen = GET_SIGLEN();
225 
226 
227  if (ISALLTRUE(a) && ISALLTRUE(b))
228  *result = true;
229  else if (ISALLTRUE(a))
230  *result = false;
231  else if (ISALLTRUE(b))
232  *result = false;
233  else
234  {
235  int32 i;
236  BITVECP sa = GETSIGN(a),
237  sb = GETSIGN(b);
238 
239  *result = true;
240  LOOPBYTE(siglen)
241  {
242  if (sa[i] != sb[i])
243  {
244  *result = false;
245  break;
246  }
247  }
248  }
249  PG_RETURN_POINTER(result);
250 }

References a, b, GET_SIGLEN, GETSIGN, i, ISALLTRUE, LOOPBYTE, PG_GETARG_POINTER, and PG_RETURN_POINTER.

◆ ghstore_union()

Datum ghstore_union ( PG_FUNCTION_ARGS  )

Definition at line 310 of file hstore_gist.c.

311 {
313  int32 len = entryvec->n;
314 
315  int *size = (int *) PG_GETARG_POINTER(1);
316  int siglen = GET_SIGLEN();
317  int32 i;
318  GISTTYPE *result = ghstore_alloc(false, siglen, NULL);
319  BITVECP base = GETSIGN(result);
320 
321  for (i = 0; i < len; i++)
322  {
323  if (unionkey(base, GETENTRY(entryvec, i), siglen))
324  {
325  result->flag |= ALLISTRUE;
326  SET_VARSIZE(result, CALCGTSIZE(ALLISTRUE, siglen));
327  break;
328  }
329  }
330 
331  *size = VARSIZE(result);
332 
333  PG_RETURN_POINTER(result);
334 }
static int32 unionkey(BITVECP sbase, GISTTYPE *add, int siglen)
Definition: hstore_gist.c:297
const void size_t len
int32 flag
Definition: hstore_gist.c:51

References ALLISTRUE, CALCGTSIZE, GISTTYPE::flag, GET_SIGLEN, GETENTRY, GETSIGN, ghstore_alloc(), i, len, GistEntryVector::n, PG_GETARG_POINTER, PG_RETURN_POINTER, SET_VARSIZE, unionkey(), and VARSIZE.

◆ hemdist()

static int hemdist ( GISTTYPE a,
GISTTYPE b,
int  siglen 
)
static

Definition at line 281 of file hstore_gist.c.

282 {
283  if (ISALLTRUE(a))
284  {
285  if (ISALLTRUE(b))
286  return 0;
287  else
288  return SIGLENBIT(siglen) - sizebitvec(GETSIGN(b), siglen);
289  }
290  else if (ISALLTRUE(b))
291  return SIGLENBIT(siglen) - sizebitvec(GETSIGN(a), siglen);
292 
293  return hemdistsign(GETSIGN(a), GETSIGN(b), siglen);
294 }
static int32 sizebitvec(BITVECP sign, int siglen)
Definition: hstore_gist.c:253
static int hemdistsign(BITVECP a, BITVECP b, int siglen)
Definition: hstore_gist.c:267
#define SIGLENBIT(siglen)
Definition: hstore_gist.c:25

References a, b, GETSIGN, hemdistsign(), ISALLTRUE, SIGLENBIT, and sizebitvec().

Referenced by ghstore_penalty(), and ghstore_picksplit().

◆ hemdistsign()

static int hemdistsign ( BITVECP  a,
BITVECP  b,
int  siglen 
)
static

Definition at line 267 of file hstore_gist.c.

268 {
269  int i,
270  dist = 0;
271 
272  LOOPBIT(siglen)
273  {
274  if (GETBIT(a, i) != GETBIT(b, i))
275  dist++;
276  }
277  return dist;
278 }
#define LOOPBIT(siglen)
Definition: hstore_gist.c:36

References a, b, GETBIT, i, and LOOPBIT.

Referenced by hemdist().

◆ PG_FUNCTION_INFO_V1() [1/10]

PG_FUNCTION_INFO_V1 ( ghstore_compress  )

◆ PG_FUNCTION_INFO_V1() [2/10]

PG_FUNCTION_INFO_V1 ( ghstore_consistent  )

◆ PG_FUNCTION_INFO_V1() [3/10]

PG_FUNCTION_INFO_V1 ( ghstore_decompress  )

◆ PG_FUNCTION_INFO_V1() [4/10]

PG_FUNCTION_INFO_V1 ( ghstore_in  )

◆ PG_FUNCTION_INFO_V1() [5/10]

PG_FUNCTION_INFO_V1 ( ghstore_options  )

◆ PG_FUNCTION_INFO_V1() [6/10]

PG_FUNCTION_INFO_V1 ( ghstore_out  )

◆ PG_FUNCTION_INFO_V1() [7/10]

PG_FUNCTION_INFO_V1 ( ghstore_penalty  )

◆ PG_FUNCTION_INFO_V1() [8/10]

PG_FUNCTION_INFO_V1 ( ghstore_picksplit  )

◆ PG_FUNCTION_INFO_V1() [9/10]

PG_FUNCTION_INFO_V1 ( ghstore_same  )

◆ PG_FUNCTION_INFO_V1() [10/10]

PG_FUNCTION_INFO_V1 ( ghstore_union  )

◆ sizebitvec()

static int32 sizebitvec ( BITVECP  sign,
int  siglen 
)
static

Definition at line 253 of file hstore_gist.c.

254 {
255  int32 size = 0,
256  i;
257 
258  LOOPBYTE(siglen)
259  {
260  size += SUMBIT(sign);
261  sign = (BITVECP) (((char *) sign) + 1);
262  }
263  return size;
264 }
#define SUMBIT(val)
Definition: hstore_gist.c:64

References i, LOOPBYTE, sign, and SUMBIT.

Referenced by hemdist().

◆ unionkey()

static int32 unionkey ( BITVECP  sbase,
GISTTYPE add,
int  siglen 
)
static

Definition at line 297 of file hstore_gist.c.

298 {
299  int32 i;
300  BITVECP sadd = GETSIGN(add);
301 
302  if (ISALLTRUE(add))
303  return 1;
304  LOOPBYTE(siglen)
305  sbase[i] |= sadd[i];
306  return 0;
307 }

References GETSIGN, i, ISALLTRUE, and LOOPBYTE.

Referenced by ghstore_union().