static query_result *
add_result (const char *query_string,
const char *name,
const char *misc_value,
const char *email,
query_result * results,
int *rc)
{
query_result *r = results;
if (name != NULL && email != NULL)
{
/* perform the query using name, email, and misc fields */
if (strstr_nocase (name, query_string)
|| strstr_nocase (email, query_string)
|| strstr_nocase (misc_value, query_string))
{
r->next = create_query_result ();
r = r->next;
r->name = strdup (name);
r->email = strdup (email);
r->misc = strdup (misc_value);
(*rc)++; /* increment results counter */
}
}
return r;
}
static query_result *
qr_atoll (query_result ** results_a, int n)
{
query_result *r = NULL;
query_result *returning_r = NULL;
query_result *tmp = NULL;
int i = 0;
r = create_query_result ();
returning_r = r;
for (i = 0; i < n; i++)
{
r->next = results_a[i];
r = r->next;
r->next = NULL;
}
tmp = returning_r;
returning_r = returning_r->next;
delete_query_result (tmp);
return returning_r;
}
/*---------------------------------------------------------------------------*/
void
execute_select_query(void * data)
{
int i;
int retval;
char all_true;
uint16_t current_epoch, nepochs;
field_data_t * field_data;
attr_entry_t * attr_entry;
expression_data_t * expr_data;
qtable_entry_t * qtable_entry = (qtable_entry_t *)data;
squery_data_t * squery_data = (squery_data_t *)qtable_entry->qptr;
current_epoch = ntoh_leuint16(&squery_data->current_epoch);
nepochs = ntoh_leuint16(&squery_data->nepochs);
PRINTF("[DEBUG]: Executing query qid %d\n", squery_data->qid);
field_data = (field_data_t *)(squery_data + 1);
/* Read all needed data. */
for(i=0; i<squery_data->nfields; i++, field_data++) {
attr_entry = get_attr_entry(field_data->id);
if(attr_entry && attr_entry->get_data) {
attr_entry->get_data(&(field_data->data));
} else {
PRINTF("[DEBUG]: Warning! get_data not defined attr_id %d\n",
field_data->id);
}
}
all_true = TRUE;
expr_data = (expression_data_t *)field_data;
/* Evaluate expressions.
* NOTE: Currently, we consider only about simple conjunctions.
*/
for(i=0; i<squery_data->nexprs; i++, expr_data++) {
if(!evaluate_expression(expr_data)) {
PRINTF("[DEBUG]: Expression evalution faild. qid %d\n",squery_data->qid);
all_true = FALSE;
break;
}
}
if(all_true) {
/* Send results to query root. */
packetbuf_clear();
retval = create_query_result(squery_data, packetbuf_dataptr(), 64);
if(retval > 0) {
packetbuf_set_datalen(retval);
if(send_data) {
/* SendResult(squery_data->qroot); */
send_data(&qtable_entry->qroot);
}
} else {
PRINTF("[DEBUG]: Error! sending data failed qid %d\n", squery_data->qid);
}
}
current_epoch++;
hton_leuint16(&squery_data->current_epoch, current_epoch);
if(nepochs == 0 || nepochs > current_epoch) {
ctimer_reset(&squery_data->timer);
} else {
PRINTF("[DEBUG]: Deleting query. qid %d\n", squery_data->qid);
remove_query_entry(squery_data->qid, &qtable_entry->qroot);
qfree(squery_data);
}
leds_toggle(LEDS_YELLOW);
}
