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Code

Re-added forgotten cache.

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This commit is contained in:
Michael Meskes 2003-11-10 20:28:30 +00:00
parent 7da19cac89
commit 135ecf8d96
1 changed files with 80 additions and 108 deletions
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188
src/interfaces/ecpg/ecpglib/execute.c
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@ -1,4 +1,4 @@
/* $Header: /cvsroot/pgsql/src/interfaces/ecpg/ecpglib/execute.c,v 1.27 2003/11/08 19:46:27 meskes Exp $ */ /* $Header: /cvsroot/pgsql/src/interfaces/ecpg/ecpglib/execute.c,v 1.28 2003/11/10 20:28:30 meskes Exp $ */
/* /*
* The aim is to get a simpler inteface to the database routines. * The aim is to get a simpler inteface to the database routines.
@ -230,12 +230,25 @@ next_insert(char *text)
return (*ptr == '\0') ? NULL : ptr; return (*ptr == '\0') ? NULL : ptr;
} }
static void
ECPGtypeinfocache_push(struct ECPGtype_information_cache ** cache, int oid, bool isarray, int lineno)
{
struct ECPGtype_information_cache *new_entry
= (struct ECPGtype_information_cache *) ECPGalloc(sizeof(struct ECPGtype_information_cache), lineno);
new_entry->oid = oid;
new_entry->isarray = isarray;
new_entry->next = *cache;
*cache = new_entry;
}
static enum ARRAY_TYPE static enum ARRAY_TYPE
ECPGis_type_an_array(int type, const struct statement * stmt, const struct variable * var) ECPGis_type_an_array(int type, const struct statement * stmt, const struct variable * var)
{ {
char *array_query; char *array_query;
enum ARRAY_TYPE isarray = ECPG_ARRAY_NOT_SET; enum ARRAY_TYPE isarray = ECPG_ARRAY_NOT_SET;
PGresult *query; PGresult *query;
struct ECPGtype_information_cache *cache_entry;
if ((stmt->connection->cache_head) == NULL) if ((stmt->connection->cache_head) == NULL)
{ {
@ -245,117 +258,76 @@ ECPGis_type_an_array(int type, const struct statement * stmt, const struct varia
* these values. * these values.
*/ */
#define not_an_array_in_ecpg ECPG_ARRAY_NONE #define not_an_array_in_ecpg ECPG_ARRAY_NONE
switch (type) /* populate cache with well known types to speed things up */
{ ECPGtypeinfocache_push(&(stmt->connection->cache_head), BOOLOID, ECPG_ARRAY_NONE, stmt->lineno);
case BOOLOID: isarray = ECPG_ARRAY_NONE; ECPGtypeinfocache_push(&(stmt->connection->cache_head), BYTEAOID, ECPG_ARRAY_NONE, stmt->lineno);
break; ECPGtypeinfocache_push(&(stmt->connection->cache_head), CHAROID, ECPG_ARRAY_NONE, stmt->lineno);
case BYTEAOID: isarray = ECPG_ARRAY_NONE; ECPGtypeinfocache_push(&(stmt->connection->cache_head), NAMEOID, not_an_array_in_ecpg, stmt->lineno);
break; ECPGtypeinfocache_push(&(stmt->connection->cache_head), INT8OID, ECPG_ARRAY_NONE, stmt->lineno);
case CHAROID: isarray = ECPG_ARRAY_NONE; ECPGtypeinfocache_push(&(stmt->connection->cache_head), INT2OID, ECPG_ARRAY_NONE, stmt->lineno);
break; ECPGtypeinfocache_push(&(stmt->connection->cache_head), INT2VECTOROID, ECPG_ARRAY_VECTOR, stmt->lineno);
case NAMEOID: isarray = not_an_array_in_ecpg; ECPGtypeinfocache_push(&(stmt->connection->cache_head), INT4OID, ECPG_ARRAY_NONE, stmt->lineno);
break; ECPGtypeinfocache_push(&(stmt->connection->cache_head), REGPROCOID, ECPG_ARRAY_NONE, stmt->lineno);
case INT8OID: isarray = ECPG_ARRAY_NONE; ECPGtypeinfocache_push(&(stmt->connection->cache_head), TEXTOID, ECPG_ARRAY_NONE, stmt->lineno);
break; ECPGtypeinfocache_push(&(stmt->connection->cache_head), OIDOID, ECPG_ARRAY_NONE, stmt->lineno);
case INT2OID: isarray = ECPG_ARRAY_NONE; ECPGtypeinfocache_push(&(stmt->connection->cache_head), TIDOID, ECPG_ARRAY_NONE, stmt->lineno);
break; ECPGtypeinfocache_push(&(stmt->connection->cache_head), XIDOID, ECPG_ARRAY_NONE, stmt->lineno);
case INT2VECTOROID: isarray = ECPG_ARRAY_VECTOR; ECPGtypeinfocache_push(&(stmt->connection->cache_head), CIDOID, ECPG_ARRAY_NONE, stmt->lineno);
break; ECPGtypeinfocache_push(&(stmt->connection->cache_head), OIDVECTOROID, ECPG_ARRAY_VECTOR, stmt->lineno);
case INT4OID: isarray = ECPG_ARRAY_NONE; ECPGtypeinfocache_push(&(stmt->connection->cache_head), POINTOID, ECPG_ARRAY_VECTOR, stmt->lineno);
break; ECPGtypeinfocache_push(&(stmt->connection->cache_head), LSEGOID, ECPG_ARRAY_VECTOR, stmt->lineno);
case REGPROCOID: isarray = ECPG_ARRAY_NONE; ECPGtypeinfocache_push(&(stmt->connection->cache_head), PATHOID, ECPG_ARRAY_NONE, stmt->lineno);
break; ECPGtypeinfocache_push(&(stmt->connection->cache_head), BOXOID, ECPG_ARRAY_VECTOR, stmt->lineno);
case TEXTOID: isarray = ECPG_ARRAY_NONE; ECPGtypeinfocache_push(&(stmt->connection->cache_head), POLYGONOID, ECPG_ARRAY_NONE, stmt->lineno);
break; ECPGtypeinfocache_push(&(stmt->connection->cache_head), LINEOID, ECPG_ARRAY_VECTOR, stmt->lineno);
case OIDOID: isarray = ECPG_ARRAY_NONE; ECPGtypeinfocache_push(&(stmt->connection->cache_head), FLOAT4OID, ECPG_ARRAY_NONE, stmt->lineno);
break; ECPGtypeinfocache_push(&(stmt->connection->cache_head), FLOAT8OID, ECPG_ARRAY_NONE, stmt->lineno);
case TIDOID: isarray = ECPG_ARRAY_NONE; ECPGtypeinfocache_push(&(stmt->connection->cache_head), ABSTIMEOID, ECPG_ARRAY_NONE, stmt->lineno);
break; ECPGtypeinfocache_push(&(stmt->connection->cache_head), RELTIMEOID, ECPG_ARRAY_NONE, stmt->lineno);
case XIDOID: isarray = ECPG_ARRAY_NONE; ECPGtypeinfocache_push(&(stmt->connection->cache_head), TINTERVALOID, ECPG_ARRAY_NONE, stmt->lineno);
break; ECPGtypeinfocache_push(&(stmt->connection->cache_head), UNKNOWNOID, ECPG_ARRAY_NONE, stmt->lineno);
case CIDOID: isarray = ECPG_ARRAY_NONE; ECPGtypeinfocache_push(&(stmt->connection->cache_head), CIRCLEOID, ECPG_ARRAY_NONE, stmt->lineno);
break; ECPGtypeinfocache_push(&(stmt->connection->cache_head), CASHOID, ECPG_ARRAY_NONE, stmt->lineno);
case OIDVECTOROID: isarray = ECPG_ARRAY_VECTOR; ECPGtypeinfocache_push(&(stmt->connection->cache_head), INETOID, ECPG_ARRAY_NONE, stmt->lineno);
break; ECPGtypeinfocache_push(&(stmt->connection->cache_head), CIDROID, ECPG_ARRAY_NONE, stmt->lineno);
case POINTOID: isarray = ECPG_ARRAY_VECTOR; ECPGtypeinfocache_push(&(stmt->connection->cache_head), BPCHAROID, ECPG_ARRAY_NONE, stmt->lineno);
break; ECPGtypeinfocache_push(&(stmt->connection->cache_head), VARCHAROID, ECPG_ARRAY_NONE, stmt->lineno);
case LSEGOID: isarray = ECPG_ARRAY_VECTOR; ECPGtypeinfocache_push(&(stmt->connection->cache_head), DATEOID, ECPG_ARRAY_NONE, stmt->lineno);
break; ECPGtypeinfocache_push(&(stmt->connection->cache_head), TIMEOID, ECPG_ARRAY_NONE, stmt->lineno);
case PATHOID: isarray = ECPG_ARRAY_NONE; ECPGtypeinfocache_push(&(stmt->connection->cache_head), TIMESTAMPOID, ECPG_ARRAY_NONE, stmt->lineno);
break; ECPGtypeinfocache_push(&(stmt->connection->cache_head), TIMESTAMPTZOID, ECPG_ARRAY_NONE, stmt->lineno);
case BOXOID: isarray = ECPG_ARRAY_VECTOR; ECPGtypeinfocache_push(&(stmt->connection->cache_head), INTERVALOID, ECPG_ARRAY_NONE, stmt->lineno);
break; ECPGtypeinfocache_push(&(stmt->connection->cache_head), TIMETZOID, ECPG_ARRAY_NONE, stmt->lineno);
case POLYGONOID: isarray = ECPG_ARRAY_NONE; ECPGtypeinfocache_push(&(stmt->connection->cache_head), ZPBITOID, ECPG_ARRAY_NONE, stmt->lineno);
break; ECPGtypeinfocache_push(&(stmt->connection->cache_head), VARBITOID, ECPG_ARRAY_NONE, stmt->lineno);
case LINEOID: isarray = ECPG_ARRAY_VECTOR; ECPGtypeinfocache_push(&(stmt->connection->cache_head), NUMERICOID, ECPG_ARRAY_NONE, stmt->lineno);
break;
case FLOAT4OID: isarray = ECPG_ARRAY_NONE;
break;
case FLOAT8OID: isarray = ECPG_ARRAY_NONE;
break;
case ABSTIMEOID: isarray = ECPG_ARRAY_NONE;
break;
case RELTIMEOID: isarray = ECPG_ARRAY_NONE;
break;
case TINTERVALOID: isarray = ECPG_ARRAY_NONE;
break;
case UNKNOWNOID: isarray = ECPG_ARRAY_NONE;
break;
case CIRCLEOID: isarray = ECPG_ARRAY_NONE;
break;
case CASHOID: isarray = ECPG_ARRAY_NONE;
break;
case INETOID: isarray = ECPG_ARRAY_NONE;
break;
case CIDROID: isarray = ECPG_ARRAY_NONE;
break;
case BPCHAROID: isarray = ECPG_ARRAY_NONE;
break;
case VARCHAROID: isarray = ECPG_ARRAY_NONE;
break;
case DATEOID: isarray = ECPG_ARRAY_NONE;
break;
case TIMEOID: isarray = ECPG_ARRAY_NONE;
break;
case TIMESTAMPOID: isarray = ECPG_ARRAY_NONE;
break;
case TIMESTAMPTZOID: isarray = ECPG_ARRAY_NONE;
break;
case INTERVALOID: isarray = ECPG_ARRAY_NONE;
break;
case TIMETZOID: isarray = ECPG_ARRAY_NONE;
break;
case ZPBITOID: isarray = ECPG_ARRAY_NONE;
break;
case VARBITOID: isarray = ECPG_ARRAY_NONE;
break;
case NUMERICOID: isarray = ECPG_ARRAY_NONE;
break;
default: break;
}
} }
if (isarray == ECPG_ARRAY_NOT_SET) for (cache_entry = (stmt->connection->cache_head); cache_entry != NULL; cache_entry = cache_entry->next)
{ {
array_query = (char *) ECPGalloc(strlen("select typlen from pg_type where oid= and typelem<>0") + 11, stmt->lineno); if (cache_entry->oid == type)
sprintf(array_query, "select typlen from pg_type where oid=%d and typelem<>0", type); return cache_entry->isarray;
query = PQexec(stmt->connection->connection, array_query);
ECPGfree(array_query);
if (PQresultStatus(query) == PGRES_TUPLES_OK)
{
isarray = (atol((char *) PQgetvalue(query, 0, 0)) == -1) ? ECPG_ARRAY_ARRAY : ECPG_ARRAY_VECTOR;
if (ECPGDynamicType(type) == SQL3_CHARACTER ||
ECPGDynamicType(type) == SQL3_CHARACTER_VARYING)
{
/*
* arrays of character strings are not yet implemented
*/
isarray = ECPG_ARRAY_NONE;
}
}
PQclear(query);
} }
array_query = (char *) ECPGalloc(strlen("select typlen from pg_type where oid= and typelem<>0") + 11, stmt->lineno);
sprintf(array_query, "select typlen from pg_type where oid=%d and typelem<>0", type);
query = PQexec(stmt->connection->connection, array_query);
ECPGfree(array_query);
if (PQresultStatus(query) == PGRES_TUPLES_OK)
{
isarray = (atol((char *) PQgetvalue(query, 0, 0)) == -1) ? ECPG_ARRAY_ARRAY : ECPG_ARRAY_VECTOR;
if (ECPGDynamicType(type) == SQL3_CHARACTER ||
ECPGDynamicType(type) == SQL3_CHARACTER_VARYING)
{
/*
* arrays of character strings are not yet implemented
*/
isarray = ECPG_ARRAY_NONE;
}
}
PQclear(query);
ECPGtypeinfocache_push(&(stmt->connection->cache_head), type, isarray, stmt->lineno);
ECPGlog("ECPGexecute line %d: TYPE database: %d C: %d array: %d\n", stmt->lineno, type, var->type, isarray); ECPGlog("ECPGexecute line %d: TYPE database: %d C: %d array: %d\n", stmt->lineno, type, var->type, isarray);
return isarray; return isarray;
} }