Well, I have been able to figure out the functions to be used. In the
documentation it is mentioned that we should call memcached_fetch_result()
in a loop until it results NULL.
I am however unable to fetch all the key-value pairs that I need. Instead
each iteration of the memcached_fetch_result() loop returns the same values
(i.e. the first key-value pair in my dataset). Is there some pointer or
index that needs to be incremented at each iteration of the loop??
rc = memcached_mget(memc, (const char* const*)keyArray, (const
size_t*)keyLen, nSubsetSize);
if (rc != MEMCACHED_SUCCESS)
{
printf("\nmecached_mget FAILED. %s\n", memcached_strerror(memc,
rc));
for(i = 0; i < nSubsetSize; i++)
{
free(keyArray[i]);
}
free(keyArray);
free(keyLen);
return (1);
}
results = NULL;
results = memcached_result_create(memc, &results_obj);
if (NULL == results)
{
printf("\nmecached_mget FAILED.\n");
for(i = 0; i < nSubsetSize; i++)
{
free(keyArray[i]);
}
free(keyArray);
free(keyLen);
return (1);
}
int iTemp = 0;
while((results = memcached_fetch_result(memc, &results_obj, &rc)) !=
NULL)
{
if (rc != MEMCACHED_SUCCESS)
{
printf("\nmemcached_fetch_result FAILED. %s\n",
memcached_strerror(memc, rc));
for(i = 0; i < nSubsetSize; i++)
{
free(keyArray[i]);
}
free(keyArray);
free(keyLen);
return (1);
}
printf("key %d: (%s). Result value (%s)\n", iTemp++,
memcached_result_key_value(results), memcached_result_value(results));
}
memcached_result_free(results);
for(i = 0; i < nSubsetSize; i++)
{
free(keyArray[i]);
}
free(keyArray);
free(keyLen);
On Friday, September 2, 2016 at 11:52:01 AM UTC-5, student wrote:
>
> Hi,
>
> I have used memcached_mget() to fetch multiple key-value pairs from the
> server and according to the documentation I am supposed to use
> memcached_fetch_result() to get the retrieved results.
> I now want to fetch the individual key-value pairs obtained in the result.
> How should I go about this because the documentation regarding this is a
> bit unclear to me.
> Following is a snippet of the relevant sections of my code.
> rc = memcached_mget(memc, keyArray, keyLen, nSubsetSize);
> if (rc != MEMCACHED_SUCCESS)
> {
> printf("\nmecached_mget FAILED. %s\n", memcached_strerror(memc
> , rc));
>
> for(i = 0; i < nSubsetSize; i++)
> {
> free(keyArray[i]);
> }
> free(keyArray);
> free(keyLen);
>
> return (1);
> }
>
> results = NULL;
> results= memcached_result_create(memc, &results_obj);
> if (NULL == results)
> {
> printf("\nmecached_mget FAILED.\n");
>
> for(i = 0; i < nSubsetSize; i++)
> {
> free(keyArray[i]);
> }
> free(keyArray);
> free(keyLen);
>
> return (1);
> }
>
> while((results = memcached_fetch_result(memc, &results_obj, &rc))
> != NULL)
> {
> //Code to print individual key-value pairs???
> }
>
>
>
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