Refactor from Heikki Linnakangas <heikki@enterprisedb.com>:
* Defined new struct WordEntryPosVector that holds a uint16 length and a variable size array of WordEntries. This replaces the previous convention of a variable size uint16 array, with the first element implying the length. WordEntryPosVector has the same layout in memory, but is more readable in source code. The POSDATAPTR and POSDATALEN macros are still used, though it would now be more readable to access the fields in WordEntryPosVector directly. * Removed needfree field from DocRepresentation. It was always set to false. * Miscellaneous other commenting and refactoring
This commit is contained in:
Teodor Sigaev
parent
ef4d38c86c
commit
57cafe7982
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@ -7,7 +7,7 @@
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*
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*
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* IDENTIFICATION
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* $PostgreSQL: pgsql/src/backend/utils/adt/tsginidx.c,v 1.3 2007/09/07 16:03:40 teodor Exp $
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* $PostgreSQL: pgsql/src/backend/utils/adt/tsginidx.c,v 1.4 2007/09/11 08:46:29 teodor Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -25,13 +25,12 @@ gin_extract_tsvector(PG_FUNCTION_ARGS)
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int32 *nentries = (int32 *) PG_GETARG_POINTER(1);
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Datum *entries = NULL;
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*nentries = 0;
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*nentries = vector->size;
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if (vector->size > 0)
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{
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int i;
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WordEntry *we = ARRPTR(vector);
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*nentries = (uint32) vector->size;
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entries = (Datum *) palloc(sizeof(Datum) * vector->size);
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for (i = 0; i < vector->size; i++)
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@ -134,11 +133,19 @@ gin_ts_consistent(PG_FUNCTION_ARGS)
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if (query->size > 0)
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{
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int4 i,
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int i,
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j = 0;
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QueryItem *item;
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GinChkVal gcv;
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/*
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* check-parameter array has one entry for each value (operand) in the
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* query. We expand that array into mapped_check, so that there's one
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* entry in mapped_check for every node in the query, including
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* operators, to allow quick lookups in checkcondition_gin. Only the
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* entries corresponding operands are actually used.
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*/
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gcv.frst = item = GETQUERY(query);
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gcv.mapped_check = (bool *) palloc(sizeof(bool) * query->size);
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@ -7,7 +7,7 @@
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*
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*
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* IDENTIFICATION
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* $PostgreSQL: pgsql/src/backend/utils/adt/tsgistidx.c,v 1.3 2007/09/07 15:09:56 teodor Exp $
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* $PostgreSQL: pgsql/src/backend/utils/adt/tsgistidx.c,v 1.4 2007/09/11 08:46:29 teodor Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -133,20 +133,27 @@ gtsvectorout(PG_FUNCTION_ARGS)
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}
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static int
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compareint(const void *a, const void *b)
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compareint(const void *va, const void *vb)
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{
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if (*((int4 *) a) == *((int4 *) b))
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int4 a = *((int4 *) va);
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int4 b = *((int4 *) vb);
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if (a == b)
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return 0;
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return (*((int4 *) a) > *((int4 *) b)) ? 1 : -1;
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return (a > b) ? 1 : -1;
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}
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/*
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* Removes duplicates from an array of int4. 'l' is
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* size of the input array. Returns the new size of the array.
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*/
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static int
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uniqueint(int4 *a, int4 l)
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{
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int4 *ptr,
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*res;
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if (l == 1)
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if (l <= 1)
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return l;
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ptr = res = a;
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@ -570,12 +577,15 @@ typedef struct
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} SPLITCOST;
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static int
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comparecost(const void *a, const void *b)
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comparecost(const void *va, const void *vb)
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{
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if (((SPLITCOST *) a)->cost == ((SPLITCOST *) b)->cost)
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SPLITCOST *a = (SPLITCOST *) va;
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SPLITCOST *b = (SPLITCOST *) vb;
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if (a->cost == b->cost)
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return 0;
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else
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return (((SPLITCOST *) a)->cost > ((SPLITCOST *) b)->cost) ? 1 : -1;
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return (a->cost > b->cost) ? 1 : -1;
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}
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@ -7,7 +7,7 @@
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*
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*
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* IDENTIFICATION
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* $PostgreSQL: pgsql/src/backend/utils/adt/tsrank.c,v 1.4 2007/09/07 16:03:40 teodor Exp $
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* $PostgreSQL: pgsql/src/backend/utils/adt/tsrank.c,v 1.5 2007/09/11 08:46:29 teodor Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -53,22 +53,24 @@ cnt_length(TSVector t)
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{
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WordEntry *ptr = ARRPTR(t),
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*end = (WordEntry *) STRPTR(t);
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int len = 0,
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clen;
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int len = 0;
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while (ptr < end)
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{
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if ((clen = POSDATALEN(t, ptr)) == 0)
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int clen = POSDATALEN(t, ptr);
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if (clen == 0)
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len += 1;
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else
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len += clen;
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ptr++;
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}
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return len;
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}
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static int4
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static int
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WordECompareQueryItem(char *eval, char *qval, WordEntry *ptr, QueryOperand *item)
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{
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if (ptr->len == item->length)
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@ -80,6 +82,10 @@ WordECompareQueryItem(char *eval, char *qval, WordEntry *ptr, QueryOperand *item
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return (ptr->len > item->length) ? 1 : -1;
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}
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/*
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* Returns a pointer to a WordEntry corresponding 'item' from tsvector 't'. 'q'
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* is the TSQuery containing 'item'. Returns NULL if not found.
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*/
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static WordEntry *
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find_wordentry(TSVector t, TSQuery q, QueryOperand *item)
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{
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@ -178,15 +184,15 @@ SortAndUniqItems(TSQuery q, int *size)
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}
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/* A dummy WordEntryPos array to use when haspos is false */
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static WordEntryPos POSNULL[] = {
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static WordEntryPosVector POSNULL = {
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1, /* Number of elements that follow */
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0
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{ 0 }
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};
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static float
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calc_rank_and(float *w, TSVector t, TSQuery q)
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{
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uint16 **pos;
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WordEntryPosVector **pos;
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int i,
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k,
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l,
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@ -207,9 +213,8 @@ calc_rank_and(float *w, TSVector t, TSQuery q)
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pfree(item);
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return calc_rank_or(w, t, q);
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}
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pos = (uint16 **) palloc(sizeof(uint16 *) * q->size);
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memset(pos, 0, sizeof(uint16 *) * q->size);
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WEP_SETPOS(POSNULL[1], MAXENTRYPOS - 1);
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pos = (WordEntryPosVector **) palloc0(sizeof(WordEntryPosVector *) * q->size);
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WEP_SETPOS(POSNULL.pos[0], MAXENTRYPOS - 1);
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for (i = 0; i < size; i++)
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{
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@ -218,25 +223,25 @@ calc_rank_and(float *w, TSVector t, TSQuery q)
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continue;
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if (entry->haspos)
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pos[i] = (uint16 *) _POSDATAPTR(t, entry);
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pos[i] = _POSVECPTR(t, entry);
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else
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pos[i] = (uint16 *) POSNULL;
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pos[i] = &POSNULL;
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dimt = *(uint16 *) (pos[i]);
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post = (WordEntryPos *) (pos[i] + 1);
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dimt = pos[i]->npos;
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post = pos[i]->pos;
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for (k = 0; k < i; k++)
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{
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if (!pos[k])
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continue;
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lenct = *(uint16 *) (pos[k]);
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ct = (WordEntryPos *) (pos[k] + 1);
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lenct = pos[k]->npos;
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ct = pos[k]->pos;
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for (l = 0; l < dimt; l++)
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{
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for (p = 0; p < lenct; p++)
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{
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dist = Abs((int) WEP_GETPOS(post[l]) - (int) WEP_GETPOS(ct[p]));
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if (dist || (dist == 0 && (pos[i] == (uint16 *) POSNULL || pos[k] == (uint16 *) POSNULL)))
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if (dist || (dist == 0 && (pos[i] == &POSNULL || pos[k] == &POSNULL)))
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{
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float curw;
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@ -285,8 +290,8 @@ calc_rank_or(float *w, TSVector t, TSQuery q)
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}
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else
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{
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dimt = *(uint16 *) POSNULL;
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post = POSNULL + 1;
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dimt = POSNULL.npos;
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post = POSNULL.pos;
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}
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resj = 0.0;
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@ -456,17 +461,19 @@ typedef struct
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{
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QueryItem **item;
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int16 nitem;
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bool needfree;
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uint8 wclass;
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int32 pos;
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} DocRepresentation;
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static int
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compareDocR(const void *a, const void *b)
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compareDocR(const void *va, const void *vb)
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{
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if (((DocRepresentation *) a)->pos == ((DocRepresentation *) b)->pos)
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DocRepresentation *a = (DocRepresentation *) va;
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DocRepresentation *b = (DocRepresentation *) vb;
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if (a->pos == b->pos)
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return 0;
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return (((DocRepresentation *) a)->pos > ((DocRepresentation *) b)->pos) ? 1 : -1;
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return (a->pos > b->pos) ? 1 : -1;
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}
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static bool
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@ -547,11 +554,11 @@ Cover(DocRepresentation *doc, int len, TSQuery query, Extention *ext)
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ptr = doc + lastpos;
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/* find lower bound of cover from founded upper bound, move down */
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/* find lower bound of cover from found upper bound, move down */
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while (ptr >= doc + ext->pos)
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{
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for (i = 0; i < ptr->nitem; i++)
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if(ptr->item[i]->type == QI_VAL) /* XXX */
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if(ptr->item[i]->type == QI_VAL)
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ptr->item[i]->operand.istrue = 1;
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if (TS_execute(GETQUERY(query), NULL, true, checkcondition_QueryOperand))
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{
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@ -620,8 +627,8 @@ get_docrep(TSVector txt, TSQuery query, int *doclen)
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}
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else
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{
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dimt = *(uint16 *) POSNULL;
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post = POSNULL + 1;
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dimt = POSNULL.npos;
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post = POSNULL.pos;
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}
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while (cur + dimt >= len)
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@ -636,7 +643,6 @@ get_docrep(TSVector txt, TSQuery query, int *doclen)
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{
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int k;
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doc[cur].needfree = false;
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doc[cur].nitem = 0;
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doc[cur].item = (QueryItem **) palloc(sizeof(QueryItem *) * query->size);
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@ -658,7 +664,6 @@ get_docrep(TSVector txt, TSQuery query, int *doclen)
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}
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else
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{
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doc[cur].needfree = false;
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doc[cur].nitem = doc[cur - 1].nitem;
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doc[cur].item = doc[cur - 1].item;
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}
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@ -764,9 +769,6 @@ calc_rank_cd(float4 *arrdata, TSVector txt, TSQuery query, int method)
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if ((method & RANK_NORM_LOGUNIQ) && txt->size > 0)
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Wdoc /= log((double) (txt->size + 1)) / log(2.0);
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for (i = 0; i < doclen; i++)
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if (doc[i].needfree)
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pfree(doc[i].item);
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pfree(doc);
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return (float4) Wdoc;
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@ -7,7 +7,7 @@
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*
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*
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* IDENTIFICATION
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* $PostgreSQL: pgsql/src/backend/utils/adt/tsvector_op.c,v 1.4 2007/09/07 16:03:40 teodor Exp $
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* $PostgreSQL: pgsql/src/backend/utils/adt/tsvector_op.c,v 1.5 2007/09/11 08:46:29 teodor Exp $
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*
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*-------------------------------------------------------------------------
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*/
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@ -269,7 +269,7 @@ compareEntry(char *ptra, WordEntry * a, char *ptrb, WordEntry * b)
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static int4
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add_pos(TSVector src, WordEntry * srcptr, TSVector dest, WordEntry * destptr, int4 maxpos)
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{
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uint16 *clen = (uint16 *) _POSDATAPTR(dest, destptr);
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uint16 *clen = &_POSVECPTR(dest, destptr)->npos;
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int i;
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uint16 slen = POSDATALEN(src, srcptr),
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startlen;
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@ -354,7 +354,7 @@ tsvector_concat(PG_FUNCTION_ARGS)
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if (ptr->haspos)
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{
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cur += SHORTALIGN(ptr1->len);
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memcpy(cur, _POSDATAPTR(in1, ptr1), POSDATALEN(in1, ptr1) * sizeof(WordEntryPos) + sizeof(uint16));
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memcpy(cur, _POSVECPTR(in1, ptr1), POSDATALEN(in1, ptr1) * sizeof(WordEntryPos) + sizeof(uint16));
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cur += POSDATALEN(in1, ptr1) * sizeof(WordEntryPos) + sizeof(uint16);
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}
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else
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@ -399,7 +399,7 @@ tsvector_concat(PG_FUNCTION_ARGS)
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cur += SHORTALIGN(ptr1->len);
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if (ptr1->haspos)
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{
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memcpy(cur, _POSDATAPTR(in1, ptr1), POSDATALEN(in1, ptr1) * sizeof(WordEntryPos) + sizeof(uint16));
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memcpy(cur, _POSVECPTR(in1, ptr1), POSDATALEN(in1, ptr1) * sizeof(WordEntryPos) + sizeof(uint16));
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cur += POSDATALEN(in1, ptr1) * sizeof(WordEntryPos) + sizeof(uint16);
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if (ptr2->haspos)
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cur += add_pos(in2, ptr2, out, ptr, maxpos) * sizeof(WordEntryPos);
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@ -434,7 +434,7 @@ tsvector_concat(PG_FUNCTION_ARGS)
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if (ptr->haspos)
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{
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cur += SHORTALIGN(ptr1->len);
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memcpy(cur, _POSDATAPTR(in1, ptr1), POSDATALEN(in1, ptr1) * sizeof(WordEntryPos) + sizeof(uint16));
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memcpy(cur, _POSVECPTR(in1, ptr1), POSDATALEN(in1, ptr1) * sizeof(WordEntryPos) + sizeof(uint16));
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cur += POSDATALEN(in1, ptr1) * sizeof(WordEntryPos) + sizeof(uint16);
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}
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else
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@ -499,10 +499,17 @@ ValCompare(CHKVAL * chkval, WordEntry * ptr, QueryOperand * item)
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* check weight info
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*/
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static bool
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checkclass_str(CHKVAL * chkval, WordEntry * val, QueryOperand * item)
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checkclass_str(CHKVAL *chkval, WordEntry *val, QueryOperand *item)
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{
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WordEntryPos *ptr = (WordEntryPos *) (chkval->values + SHORTALIGN(val->pos + val->len) + sizeof(uint16));
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uint16 len = *((uint16 *) (chkval->values + SHORTALIGN(val->pos + val->len)));
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WordEntryPosVector *posvec;
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WordEntryPos *ptr;
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uint16 len;
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posvec = (WordEntryPosVector *)
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(chkval->values + SHORTALIGN(val->pos + val->len));
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len = posvec->npos;
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ptr = posvec->pos;
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while (len--)
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{
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|
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@ -674,7 +681,13 @@ ts_match_tq(PG_FUNCTION_ARGS)
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}
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|
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/*
|
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* Statistics of tsvector
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* ts_stat statistic function support
|
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*/
|
||||
|
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|
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/*
|
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* Returns the number of positions in value 'wptr' within tsvector 'txt',
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* that have a weight equal to one of the weights in 'weight' bitmask.
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*/
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static int
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check_weight(TSVector txt, WordEntry * wptr, int8 weight)
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@ -824,6 +837,18 @@ formstat(tsstat * stat, TSVector txt, WordEntry ** entry, uint32 len)
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return newstat;
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}
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/*
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* This is written like a custom aggregate function, because the
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* original plan was to do just that. Unfortunately, an aggregate function
|
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* can't return a set, so that plan was abandoned. If that limitation is
|
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* lifted in the future, ts_stat could be a real aggregate function so that
|
||||
* you could use it like this:
|
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*
|
||||
* SELECT ts_stat(vector_column) FROM vector_table;
|
||||
*
|
||||
* where vector_column is a tsvector-type column in vector_table.
|
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*/
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|
||||
static tsstat *
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ts_accum(tsstat * stat, Datum data)
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{
|
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|
|
|
|||
|
|
@ -5,7 +5,7 @@
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|||
*
|
||||
* Copyright (c) 1998-2007, PostgreSQL Global Development Group
|
||||
*
|
||||
* $PostgreSQL: pgsql/src/include/tsearch/ts_type.h,v 1.4 2007/09/07 16:03:40 teodor Exp $
|
||||
* $PostgreSQL: pgsql/src/include/tsearch/ts_type.h,v 1.5 2007/09/11 08:46:29 teodor Exp $
|
||||
*
|
||||
*-------------------------------------------------------------------------
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||||
*/
|
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|
|
@ -43,6 +43,13 @@ typedef struct
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|||
|
||||
typedef uint16 WordEntryPos;
|
||||
|
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typedef struct
|
||||
{
|
||||
uint16 npos;
|
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WordEntryPos pos[1]; /* var length */
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} WordEntryPosVector;
|
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|
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|
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#define WEP_GETWEIGHT(x) ( (x) >> 14 )
|
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#define WEP_GETPOS(x) ( (x) & 0x3fff )
|
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|
||||
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@ -88,9 +95,9 @@ typedef TSVectorData *TSVector;
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/* returns a pointer to the beginning of lexemes */
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#define STRPTR(x) ( (char *) &(x)->entries[x->size] )
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#define _POSDATAPTR(x,e) (STRPTR(x) + SHORTALIGN((e)->pos + (e)->len))
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#define POSDATALEN(x,e) ( ( ((WordEntry*)(e))->haspos ) ? (*(uint16*)_POSDATAPTR(x,e)) : 0 )
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#define POSDATAPTR(x,e) ( (WordEntryPos*)( _POSDATAPTR(x,e)+sizeof(uint16) ) )
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#define _POSVECPTR(x, e) ((WordEntryPosVector *)(STRPTR(x) + SHORTALIGN((e)->pos + (e)->len)))
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#define POSDATALEN(x,e) ( ( (e)->haspos ) ? (_POSVECPTR(x,e)->npos) : 0 )
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#define POSDATAPTR(x,e) (_POSVECPTR(x,e)->pos)
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/*
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* fmgr interface macros
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Reference in New Issue