* 移除并返回集合中的一个随机元素,当key不存在或key是空集时，返回nil * @param[in] key 集合键 * @param[out] value 集合随机返回元素 * @return 成功true,失败false * @see * @note */
| 3226 | * @note |
| 3227 | */ |
| 3228 | bool RedisClient::spop(const QString & key, QByteArray &value) { |
| 3229 | _sErrorInfo.clear(); |
| 3230 | if(key.trimmed().isEmpty()) { |
| 3231 | _sErrorInfo = "key is empty"; |
| 3232 | return false; |
| 3233 | } |
| 3234 | |
| 3235 | _vCmdList.clear(); |
| 3236 | _vCmdList.push_back("SPOP"); |
| 3237 | _vCmdList.push_back(key); |
| 3238 | |
| 3239 | _cmdResult = command(_vCmdList); |
| 3240 | if(_cmdResult[0] == '-') { |
| 3241 | if(parseRespError(_cmdResult,_sValue)) |
| 3242 | _sErrorInfo = _sValue; |
| 3243 | else |
| 3244 | _sErrorInfo = "parser resp error info failed"; |
| 3245 | _bRet = false; |
| 3246 | } else if(_cmdResult[0] == '$') { |
| 3247 | if(parseRespBulkString(_cmdResult,value, _iRet)) { |
| 3248 | if(_iRet == -1) { |
| 3249 | _bRet = false; |
| 3250 | _sErrorInfo = "value is nil"; |
| 3251 | } else |
| 3252 | _bRet = true; |
| 3253 | } else { |
| 3254 | _sErrorInfo = "parser resp bulk string info failed"; |
| 3255 | _bRet = false; |
| 3256 | } |
| 3257 | } else { |
| 3258 | _bRet = false; |
| 3259 | _sErrorInfo = QString("parser resp type failed:") + _cmdResult[0]; |
| 3260 | } |
| 3261 | return _bRet; |
| 3262 | } |
| 3263 | |
| 3264 | /** |
| 3265 | * 将member元素从source集合移动到destination集合 |