OCI_HashEntry * OCI_API OCI_HashLookup
(
OCI_HashTable *table,
const otext *key,
boolean create
)
{
OCI_HashEntry *e = NULL, *e1 = NULL, *e2 = NULL;
unsigned int i;
OCI_LIB_CALL_ENTER(OCI_HashEntry*, NULL)
OCI_CHECK_PTR(OCI_IPC_HASHTABLE, table)
OCI_CHECK_PTR(OCI_IPC_STRING, key)
i = OCI_HashCompute(table, key);
if (i < table->size)
{
for(e = table->items[i]; e; e = e->next)
{
if (ostrcasecmp(e->key, key) == 0)
{
break;
}
}
if (!e && create)
{
e = (OCI_HashEntry *) OCI_MemAlloc(OCI_IPC_HASHENTRY, sizeof(*e), (size_t) 1, TRUE);
if (e)
{
e->key = ostrdup(key);
e1 = e2 = table->items[i];
while (e1)
{
e2 = e1;
e1 = e1->next;
}
if (e2)
{
e2->next = e;
}
else
{
table->items[i] = e;
}
}
}
}
call_retval = e;
call_status = TRUE;
OCI_LIB_CALL_EXIT()
}
int OCI_GetDefineIndex
(
OCI_Resultset *rs,
const otext *name
)
{
OCI_HashEntry *he = NULL;
int index = -1;
if (!rs->map)
{
/* create the map at the first call to OCI_Getxxxxx2() to save
time and memory when it's not needed */
rs->map = OCI_HashCreate(OCI_HASH_DEFAULT_SIZE, OCI_HASH_INTEGER);
if (rs->map)
{
ub4 i;
for (i = 0; i < rs->nb_defs; i++)
{
OCI_HashAddInt(rs->map, rs->defs[i].col.name, (i+1));
}
}
}
/* check out we got our map object */
OCI_CHECK(NULL == rs->map, -1);
he = OCI_HashLookup(rs->map, name, FALSE);
while (he)
{
/* no more entries or key matched => so we got it ! */
if (!he->next || 0 == ostrcasecmp(he->key, name))
{
index = he->values->value.num;
break;
}
he = he->next;
}
if (index < 0)
{
OCI_ExceptionItemNotFound(rs->stmt->con, rs->stmt, name, OCI_IPC_COLUMN);
}
return index;
}
