{
uint32_t flags;
memcached_return rc;
+ std::string ret_val;
- return memcached_get_by_key(&memc, master_key, strlen(master_key),
- key, strlen(key),
- value_length, &flags, &rc);
+ char *value= memcached_get_by_key(&memc, master_key.c_str(), master_key.length(),
+ key.c_str(), key.length(),
+ value_length, &flags, &rc);
+ if (value)
+ {
+ ret_val.assign(value);
+ }
+ return ret_val;
}
- memcached_return mget(const char **keys, size_t *key_length,
- unsigned int number_of_keys)
+ bool mget(std::vector<std::string> &keys)
{
- size_t *key_len= static_cast<size_t *>(malloc(keys.size() * sizeof(size_t)));
- if (key_len == NULL)
- {
- return false;
- }
- std::vector<char *> real_keys;
++ std::vector<const char *> real_keys;
++ std::vector<size_t> key_len;
+ /*
+ * Construct an array which will contain the length
+ * of each of the strings in the input vector. Also, to
+ * interface with the memcached C API, we need to convert
+ * the vector of std::string's to a vector of char *.
+ */
- int i= 0;
++ real_keys.reserve(keys.size());
++ key_len.reserve(keys.size());
++
+ std::vector<std::string>::iterator it= keys.begin();
- key_len[i++]= (*it).length();
++
+ while (it != keys.end())
+ {
+ real_keys.push_back(const_cast<char *>((*it).c_str()));
- memcached_return rc= memcached_mget(&memc, &real_keys[0], key_len,
++ key_len.push_back((*it).length());
+ ++it;
+ }
+
+ /*
+ * If the std::vector of keys is empty then we cannot
+ * call memcached_mget as we will get undefined behavior.
+ */
+ if (!real_keys.empty())
+ {
++ memcached_return rc= memcached_mget(&memc, &real_keys[0], &key_len[0],
+ static_cast<unsigned int>(real_keys.size()));
+ return (rc == MEMCACHED_SUCCESS);
+ }
- return memcached_mget(&memc, keys, key_length, number_of_keys);
+ return false;
}
- memcached_return set(const char *key, const char *value, size_t value_length)
+ bool set(const std::string &key,
+ const std::string &value,
+ time_t expiration,
+ uint32_t flags)
{
- return memcached_set(&memc, key, strlen(key),
- value, value_length,
- time_t(0), uint32_t(0));
+ memcached_return rc= memcached_set(&memc,
+ key.c_str(), key.length(),
+ value.c_str(), value.length(),
+ expiration, flags);
+ return (rc == MEMCACHED_SUCCESS || rc == MEMCACHED_BUFFERED);
}
- memcached_return set_by_key(const char *master_key, const char *key,
- const char *value, size_t value_length)
+ bool set_all(std::vector<std::string> &keys,
+ std::vector<std::string> &values,
+ time_t expiration,
+ uint32_t flags)
{
- return memcached_set_by_key(&memc, master_key, strlen(master_key),
- key, strlen(key),
- value, value_length,
- time_t(0),
- uint32_t(0) );
+ if (keys.size() != values.size())
+ {
+ return false;
+ }
+ bool retval= true;
+ std::vector<std::string>::iterator key_it= keys.begin();
+ std::vector<std::string>::iterator val_it= values.begin();
+ while (key_it != keys.end())
+ {
+ retval= set((*key_it), (*val_it), expiration, flags);
+ if (retval == false)
+ {
+ return retval;
+ }
+ ++key_it;
+ ++val_it;
+ }
+ return retval;
}
- memcached_return
- increment(const char *key, unsigned int offset, uint64_t *value)
+
+ bool set_by_key(const std::string &master_key,
+ const std::string &key,
+ const std::string &value,
+ time_t expiration,
+ uint32_t flags)
{
- return memcached_increment(&memc, key, strlen(key),
- offset, value);
+ memcached_return rc= memcached_set_by_key(&memc, master_key.c_str(),
+ master_key.length(),
+ key.c_str(), key.length(),
+ value.c_str(), value.length(),
+ expiration,
+ flags);
+ return (rc == MEMCACHED_SUCCESS);
}
- memcached_return
- decrement(const char *key, unsigned int offset, uint64_t *value)
+
+ bool increment(const std::string &key, unsigned int offset, uint64_t *value)
+ {
+ memcached_return rc= memcached_increment(&memc, key.c_str(), key.length(),
+ offset, value);
+ return (rc == MEMCACHED_SUCCESS);
+ }
+
+ bool decrement(const std::string &key, unsigned int offset, uint64_t *value)
{
- return memcached_decrement(&memc, key, strlen(key),
- offset, value);
+ memcached_return rc= memcached_decrement(&memc, key.c_str(),
+ key.length(),
+ offset, value);
+ return (rc == MEMCACHED_SUCCESS);
}