GtHashmap* gt_hashmap_new(GtHashType keyhashtype, GtFree keyfree,
GtFree valuefree)
{
struct hm_freefuncs *ff = gt_malloc(sizeof (*ff));
ff->keyfree = keyfree;
ff->valuefree = valuefree;
switch (keyhashtype) {
case GT_HASH_DIRECT:
{
HashElemInfo hm_directkey_eleminfo = {
gt_ht_ptr_elem_hash, { .free_elem_with_data = hm_elem_free },
sizeof (struct map_entry), gt_ht_ptr_elem_cmp, ff, gt_free_func
};
return (GtHashmap*) gt_hashtable_new(hm_directkey_eleminfo);
}
case GT_HASH_STRING:
{
HashElemInfo hm_strkey_eleminfo = {
gt_ht_cstr_elem_hash, { .free_elem_with_data = hm_elem_free },
sizeof (struct map_entry), gt_ht_cstr_elem_cmp, ff, gt_free_func
};
return (GtHashmap*) gt_hashtable_new(hm_strkey_eleminfo);
}
default: gt_assert(0);
}
return NULL; /* for stupid compilers nagging too much */
}
static GtRDBStmt* gt_rdb_mysql_prepare(GtRDB *rdb, const char *query,
GtUword num_params, GtError *err)
{
GtRDBStmt *st = NULL;
GtRDBStmtMySQL *stm = NULL;
GtRDBMySQL *rdbm;
int had_err = 0, retval = 0;
/* we need these to keep track of result/parameter and string buffers */
HashElemInfo str_buffer_hash = {
gt_ht_ptr_elem_hash,
{ free_str },
sizeof (GtStr*),
gt_ht_ptr_elem_cmp,
NULL,
NULL
},
buffer_hash = {
gt_ht_ptr_elem_hash,
{ free_buf },
sizeof (void*),
gt_ht_ptr_elem_cmp,
NULL,
NULL
};
MYSQL_STMT *tmp = NULL;
gt_assert(rdb && query);
gt_error_check(err);
rdbm = gt_rdb_mysql_cast(rdb);
tmp = mysql_stmt_init(&rdbm->conn);
if ((retval = mysql_stmt_prepare(tmp, query, strlen(query)))) {
gt_error_set(err, GT_MYSQL_ERRMSG, retval, mysql_stmt_error(tmp));
had_err = -1;
}
if (!had_err) {
int param_count;
param_count = mysql_stmt_param_count(tmp);
if (param_count != num_params) {
gt_error_set(err, "invalid parameter count: "GT_WU" expected, %d given",
num_params, param_count);
mysql_stmt_close(tmp);
had_err = -1;
}
}
if (!had_err) {
st = gt_rdb_stmt_create(gt_rdb_stmt_mysql_class());
stm = gt_rdb_stmt_mysql_cast(st);
stm->num_params = num_params;
stm->query = gt_str_new_cstr(query);
stm->buffers = gt_hashtable_new(buffer_hash);
stm->returned_strings = gt_hashtable_new(str_buffer_hash);
stm->stmt = tmp;
stm->update_maxlengths = true;
stm->params = gt_calloc(num_params, sizeof (MYSQL_BIND));
mysql_stmt_attr_set(tmp, STMT_ATTR_UPDATE_MAX_LENGTH,
&stm->update_maxlengths);
memset(stm->params, 0, num_params*sizeof (MYSQL_BIND));
stm->conn = &rdbm->conn;
}
return st;
}
