database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-08-19 23:22:23 +03:00
Code Activity

Multi-column GIN indexes. Teodor Sigaev

Browse Source
This commit is contained in:
Tom Lane
2008-07-11 21:06:29 +00:00
parent 2d6599f471
commit 27cb66fdfe
15 changed files with 465 additions and 182 deletions
Download Patch File Download Diff File Expand all files Collapse all files

38
src/backend/access/gin/ginbulk.c
View File

@@ -8,7 +8,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/access/gin/ginbulk.c,v 1.12 2008/06/29 21:04:01 tgl Exp $
* $PostgreSQL: pgsql/src/backend/access/gin/ginbulk.c,v 1.13 2008/07/11 21:06:29 tgl Exp $
*-------------------------------------------------------------------------
*/
@@ -82,16 +82,16 @@ ginInsertData(BuildAccumulator *accum, EntryAccumulator *entry, ItemPointer heap
* palloc'd space in accum.
*/
static Datum
getDatumCopy(BuildAccumulator *accum, Datum value)
getDatumCopy(BuildAccumulator *accum, OffsetNumber attnum, Datum value)
{
Form_pg_attribute *att = accum->ginstate->tupdesc->attrs;
Form_pg_attribute att = accum->ginstate->origTupdesc->attrs[ attnum - 1 ];
Datum res;
if (att[0]->attbyval)
if (att->attbyval)
res = value;
else
{
res = datumCopy(value, false, att[0]->attlen);
res = datumCopy(value, false, att->attlen);
accum->allocatedMemory += GetMemoryChunkSpace(DatumGetPointer(res));
}
return res;
@@ -101,7 +101,7 @@ getDatumCopy(BuildAccumulator *accum, Datum value)
* Find/store one entry from indexed value.
*/
static void
ginInsertEntry(BuildAccumulator *accum, ItemPointer heapptr, Datum entry)
ginInsertEntry(BuildAccumulator *accum, ItemPointer heapptr, OffsetNumber attnum, Datum entry)
{
EntryAccumulator *ea = accum->entries,
*pea = NULL;
@@ -110,7 +110,7 @@ ginInsertEntry(BuildAccumulator *accum, ItemPointer heapptr, Datum entry)
while (ea)
{
res = compareEntries(accum->ginstate, entry, ea->value);
res = compareAttEntries(accum->ginstate, attnum, entry, ea->attnum, ea->value);
if (res == 0)
break; /* found */
else
@@ -132,7 +132,8 @@ ginInsertEntry(BuildAccumulator *accum, ItemPointer heapptr, Datum entry)
ea = EAAllocate(accum);
ea->left = ea->right = NULL;
ea->value = getDatumCopy(accum, entry);
ea->attnum = attnum;
ea->value = getDatumCopy(accum, attnum, entry);
ea->length = DEF_NPTR;
ea->number = 1;
ea->shouldSort = FALSE;
@@ -160,7 +161,8 @@ ginInsertEntry(BuildAccumulator *accum, ItemPointer heapptr, Datum entry)
* then calls itself for each parts
*/
static void
ginChooseElem(BuildAccumulator *accum, ItemPointer heapptr, Datum *entries, uint32 nentry,
ginChooseElem(BuildAccumulator *accum, ItemPointer heapptr, OffsetNumber attnum,
Datum *entries, uint32 nentry,
uint32 low, uint32 high, uint32 offset)
{
uint32 pos;
@@ -168,15 +170,15 @@ ginChooseElem(BuildAccumulator *accum, ItemPointer heapptr, Datum *entries, uint
pos = (low + middle) >> 1;
if (low != middle && pos >= offset && pos - offset < nentry)
ginInsertEntry(accum, heapptr, entries[pos - offset]);
ginInsertEntry(accum, heapptr, attnum, entries[pos - offset]);
pos = (high + middle + 1) >> 1;
if (middle + 1 != high && pos >= offset && pos - offset < nentry)
ginInsertEntry(accum, heapptr, entries[pos - offset]);
ginInsertEntry(accum, heapptr, attnum, entries[pos - offset]);
if (low != middle)
ginChooseElem(accum, heapptr, entries, nentry, low, middle, offset);
ginChooseElem(accum, heapptr, attnum, entries, nentry, low, middle, offset);
if (high != middle + 1)
ginChooseElem(accum, heapptr, entries, nentry, middle + 1, high, offset);
ginChooseElem(accum, heapptr, attnum, entries, nentry, middle + 1, high, offset);
}
/*
@@ -185,7 +187,8 @@ ginChooseElem(BuildAccumulator *accum, ItemPointer heapptr, Datum *entries, uint
* next middle on left part and middle of right part.
*/
void
ginInsertRecordBA(BuildAccumulator *accum, ItemPointer heapptr, Datum *entries, int32 nentry)
ginInsertRecordBA(BuildAccumulator *accum, ItemPointer heapptr, OffsetNumber attnum,
Datum *entries, int32 nentry)
{
uint32 i,
nbit = 0,
@@ -201,8 +204,8 @@ ginInsertRecordBA(BuildAccumulator *accum, ItemPointer heapptr, Datum *entries,
nbit = 1 << nbit;
offset = (nbit - nentry) / 2;
ginInsertEntry(accum, heapptr, entries[(nbit >> 1) - offset]);
ginChooseElem(accum, heapptr, entries, nentry, 0, nbit, offset);
ginInsertEntry(accum, heapptr, attnum, entries[(nbit >> 1) - offset]);
ginChooseElem(accum, heapptr, attnum, entries, nentry, 0, nbit, offset);
}
static int
@@ -259,7 +262,7 @@ walkTree(BuildAccumulator *accum)
}
ItemPointerData *
ginGetEntry(BuildAccumulator *accum, Datum *value, uint32 *n)
ginGetEntry(BuildAccumulator *accum, OffsetNumber *attnum, Datum *value, uint32 *n)
{
EntryAccumulator *entry;
ItemPointerData *list;
@@ -299,6 +302,7 @@ ginGetEntry(BuildAccumulator *accum, Datum *value, uint32 *n)
return NULL;
*n = entry->number;
*attnum = entry->attnum;
*value = entry->value;
list = entry->list;