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Change tupledesc->attrs[n] to TupleDescAttr(tupledesc, n).

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This is a mechanical change in preparation for a later commit that
will change the layout of TupleDesc.  Introducing a macro to abstract
the details of where attributes are stored will allow us to change
that in separate step and revise it in future.

Author: Thomas Munro, editorialized by Andres Freund
Reviewed-By: Andres Freund
Discussion: https://postgr.es/m/CAEepm=0ZtQ-SpsgCyzzYpsXS6e=kZWqk3g5Ygn3MDV7A8dabUA@mail.gmail.com
This commit is contained in:
Andres Freund
2017-08-20 11:19:07 -07:00
parent b1c2d76a2f
commit 2cd7084524
100 changed files with 805 additions and 626 deletions
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55
src/backend/utils/cache/relcache.c vendored
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@ -546,7 +546,7 @@ RelationBuildTupleDesc(Relation relation)
elog(ERROR, "invalid attribute number %d for %s",
attp->attnum, RelationGetRelationName(relation));
memcpy(relation->rd_att->attrs[attp->attnum - 1],
memcpy(TupleDescAttr(relation->rd_att, attp->attnum - 1),
attp,
ATTRIBUTE_FIXED_PART_SIZE);
@ -590,7 +590,7 @@ RelationBuildTupleDesc(Relation relation)
int i;
for (i = 0; i < relation->rd_rel->relnatts; i++)
Assert(relation->rd_att->attrs[i]->attcacheoff == -1);
Assert(TupleDescAttr(relation->rd_att, i)->attcacheoff == -1);
}
#endif
@ -600,7 +600,7 @@ RelationBuildTupleDesc(Relation relation)
* for attnum=1 that used to exist in fastgetattr() and index_getattr().
*/
if (relation->rd_rel->relnatts > 0)
relation->rd_att->attrs[0]->attcacheoff = 0;
TupleDescAttr(relation->rd_att, 0)->attcacheoff = 0;
/*
* Set up constraint/default info
@ -958,9 +958,11 @@ RelationBuildPartitionKey(Relation relation)
/* Collect type information */
if (attno != 0)
{
key->parttypid[i] = relation->rd_att->attrs[attno - 1]->atttypid;
key->parttypmod[i] = relation->rd_att->attrs[attno - 1]->atttypmod;
key->parttypcoll[i] = relation->rd_att->attrs[attno - 1]->attcollation;
Form_pg_attribute att = TupleDescAttr(relation->rd_att, attno - 1);
key->parttypid[i] = att->atttypid;
key->parttypmod[i] = att->atttypmod;
key->parttypcoll[i] = att->attcollation;
}
else
{
@ -1977,16 +1979,16 @@ formrdesc(const char *relationName, Oid relationReltype,
has_not_null = false;
for (i = 0; i < natts; i++)
{
memcpy(relation->rd_att->attrs[i],
memcpy(TupleDescAttr(relation->rd_att, i),
&attrs[i],
ATTRIBUTE_FIXED_PART_SIZE);
has_not_null |= attrs[i].attnotnull;
/* make sure attcacheoff is valid */
relation->rd_att->attrs[i]->attcacheoff = -1;
TupleDescAttr(relation->rd_att, i)->attcacheoff = -1;
}
/* initialize first attribute's attcacheoff, cf RelationBuildTupleDesc */
relation->rd_att->attrs[0]->attcacheoff = 0;
TupleDescAttr(relation->rd_att, 0)->attcacheoff = 0;
/* mark not-null status */
if (has_not_null)
@ -2000,7 +2002,7 @@ formrdesc(const char *relationName, Oid relationReltype,
/*
* initialize relation id from info in att array (my, this is ugly)
*/
RelationGetRelid(relation) = relation->rd_att->attrs[0]->attrelid;
RelationGetRelid(relation) = TupleDescAttr(relation->rd_att, 0)->attrelid;
/*
* All relations made with formrdesc are mapped. This is necessarily so
@ -3274,9 +3276,12 @@ RelationBuildLocalRelation(const char *relname,
has_not_null = false;
for (i = 0; i < natts; i++)
{
rel->rd_att->attrs[i]->attidentity = tupDesc->attrs[i]->attidentity;
rel->rd_att->attrs[i]->attnotnull = tupDesc->attrs[i]->attnotnull;
has_not_null |= tupDesc->attrs[i]->attnotnull;
Form_pg_attribute satt = TupleDescAttr(tupDesc, i);
Form_pg_attribute datt = TupleDescAttr(rel->rd_att, i);
datt->attidentity = satt->attidentity;
datt->attnotnull = satt->attnotnull;
has_not_null |= satt->attnotnull;
}
if (has_not_null)
@ -3346,7 +3351,7 @@ RelationBuildLocalRelation(const char *relname,
RelationGetRelid(rel) = relid;
for (i = 0; i < natts; i++)
rel->rd_att->attrs[i]->attrelid = relid;
TupleDescAttr(rel->rd_att, i)->attrelid = relid;
rel->rd_rel->reltablespace = reltablespace;
@ -3971,13 +3976,13 @@ BuildHardcodedDescriptor(int natts, const FormData_pg_attribute *attrs,
for (i = 0; i < natts; i++)
{
memcpy(result->attrs[i], &attrs[i], ATTRIBUTE_FIXED_PART_SIZE);
memcpy(TupleDescAttr(result, i), &attrs[i], ATTRIBUTE_FIXED_PART_SIZE);
/* make sure attcacheoff is valid */
result->attrs[i]->attcacheoff = -1;
TupleDescAttr(result, i)->attcacheoff = -1;
}
/* initialize first attribute's attcacheoff, cf RelationBuildTupleDesc */
result->attrs[0]->attcacheoff = 0;
TupleDescAttr(result, 0)->attcacheoff = 0;
/* Note: we don't bother to set up a TupleConstr entry */
@ -4044,6 +4049,7 @@ AttrDefaultFetch(Relation relation)
while (HeapTupleIsValid(htup = systable_getnext(adscan)))
{
Form_pg_attrdef adform = (Form_pg_attrdef) GETSTRUCT(htup);
Form_pg_attribute attr = TupleDescAttr(relation->rd_att, adform->adnum - 1);
for (i = 0; i < ndef; i++)
{
@ -4051,7 +4057,7 @@ AttrDefaultFetch(Relation relation)
continue;
if (attrdef[i].adbin != NULL)
elog(WARNING, "multiple attrdef records found for attr %s of rel %s",
NameStr(relation->rd_att->attrs[adform->adnum - 1]->attname),
NameStr(attr->attname),
RelationGetRelationName(relation));
else
found++;
@ -4061,7 +4067,7 @@ AttrDefaultFetch(Relation relation)
adrel->rd_att, &isnull);
if (isnull)
elog(WARNING, "null adbin for attr %s of rel %s",
NameStr(relation->rd_att->attrs[adform->adnum - 1]->attname),
NameStr(attr->attname),
RelationGetRelationName(relation));
else
{
@ -5270,7 +5276,7 @@ errtablecol(Relation rel, int attnum)
/* Use reldesc if it's a user attribute, else consult the catalogs */
if (attnum > 0 && attnum <= reldesc->natts)
colname = NameStr(reldesc->attrs[attnum - 1]->attname);
colname = NameStr(TupleDescAttr(reldesc, attnum - 1)->attname);
else
colname = get_relid_attribute_name(RelationGetRelid(rel), attnum);
@ -5460,14 +5466,16 @@ load_relcache_init_file(bool shared)
has_not_null = false;
for (i = 0; i < relform->relnatts; i++)
{
Form_pg_attribute attr = TupleDescAttr(rel->rd_att, i);
if (fread(&len, 1, sizeof(len), fp) != sizeof(len))
goto read_failed;
if (len != ATTRIBUTE_FIXED_PART_SIZE)
goto read_failed;
if (fread(rel->rd_att->attrs[i], 1, len, fp) != len)
if (fread(attr, 1, len, fp) != len)
goto read_failed;
has_not_null |= rel->rd_att->attrs[i]->attnotnull;
has_not_null |= attr->attnotnull;
}
/* next read the access method specific field */
@ -5848,7 +5856,8 @@ write_relcache_init_file(bool shared)
/* next, do all the attribute tuple form data entries */
for (i = 0; i < relform->relnatts; i++)
{
write_item(rel->rd_att->attrs[i], ATTRIBUTE_FIXED_PART_SIZE, fp);
write_item(TupleDescAttr(rel->rd_att, i),
ATTRIBUTE_FIXED_PART_SIZE, fp);
}
/* next, do the access method specific field */