C++ ZIterator类代码示例

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本文整理汇总了C++中ZIterator类的典型用法代码示例。如果您正苦于以下问题：C++ ZIterator类的具体用法？C++ ZIterator怎么用？C++ ZIterator使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。

在下文中一共展示了ZIterator类的20个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C++代码示例。

示例1: proc_zrscan

int proc_zrscan(NetworkServer *net, Link *link, const Request &req, Response *resp){
	SSDBServer *serv = (SSDBServer *)net->data;
	CHECK_NUM_PARAMS(6);

	uint64_t limit = req[5].Uint64();
	uint64_t offset = 0;
	if(req.size() > 6){
		offset = limit;
		limit = offset + req[6].Uint64();
	}
	ZIterator *it = serv->ssdb->zrscan(req[1], req[2], req[3], req[4], limit);
	if(offset > 0){
		it->skip(offset);
	}
	resp->push_back("ok");
	uint64_t size = 0;
	while(it->next()){
		size += it->key.size() + it->score.size();
		CHECK_SCAN_OUTPUT_LIMIT(size);
		resp->push_back(it->key);
		resp->push_back(it->score);
	}
	delete it;
	return 0;
}

开发者ID:sunxiaojun2014，项目名称:qssdb，代码行数:25，代码来源:proc_zset.cpp

示例2: proc_zremrangebyrank

static int proc_zremrangebyrank(Server *serv, Link *link, const Request &req, Response *resp){
	if(req.size() < 4){
		resp->push_back("client_error");
		return 0;
	}
	uint64_t offset = req[2].Uint64();
	uint64_t limit = req[3].Uint64();
	ZIterator *it = serv->ssdb->zrange(req[1], offset, limit);
	uint64_t count = 0;
	while(it->next()){
		count ++;
		int ret = serv->ssdb->zdel(req[1], it->key);
		if(ret == -1){
			resp->push_back("error");
			delete it;
			return 0;
		}
	}
	delete it;
	
	char buf[20];
	snprintf(buf, sizeof(buf), "%" PRIu64 "", count);
	resp->push_back("ok");
	resp->push_back(buf);
	return 0;
}

开发者ID:denji，项目名称:ssdb，代码行数:26，代码来源:proc_zset.cpp

示例3: proc_zclear

int proc_zclear(NetworkServer *net, Link *link, const Request &req, Response *resp){
	SSDBServer *serv = (SSDBServer *)net->data;
	CHECK_NUM_PARAMS(2);
	
	const Bytes &name = req[1];
	int64_t count = 0;
	while(1){
		ZIterator *it = serv->ssdb->zrange(name, 0, 1000);
		int num = 0;
		while(it->next()){
			int ret = serv->ssdb->zdel(name, it->key);
			if(ret == -1){
				resp->push_back("error");
				delete it;
				return 0;
			}
			num ++;
		};
		delete it;
		
		if(num == 0){
			break;
		}
		count += num;
	}
    serv->save_kv_stats();
	resp->reply_int(0, count);

	return 0;
}

开发者ID:sunxiaojun2014，项目名称:qssdb，代码行数:30，代码来源:proc_zset.cpp

示例4: proc_zclear

static int proc_zclear(Server *serv, Link *link, const Request &req, Response *resp){
	if(req.size() < 2){
		resp->push_back("client_error");
		return 0;
	}
	
	const Bytes &name = req[1];
	uint64_t total = 0;
	while(1){
		ZIterator *it = serv->ssdb->zrange(name, 0, 1000);
		int num = 0;
		while(it->next()){
			int ret = serv->ssdb->zdel(name, it->key);
			if(ret == -1){
				resp->push_back("error");
				delete it;
				return 0;
			}
			num ++;
		};
		delete it;
		
		if(num == 0){
			break;
		}
		total += num;
	}
	char buf[20];
	snprintf(buf, sizeof(buf), "%" PRIu64 "", total);
	resp->push_back("ok");
	resp->push_back(buf);

	return 0;
}

开发者ID:denji，项目名称:ssdb，代码行数:34，代码来源:proc_zset.cpp

示例5: ziterator

ZIterator* SSDB::zrrange(const Bytes &name, uint64_t offset, uint64_t limit){
	if(offset + limit > limit){
		limit = offset + limit;
	}
	ZIterator *it = ziterator(this, name, "", "", "", limit, Iterator::BACKWARD);
	it->skip(offset);
	return it;
}

开发者ID:Alienfeel，项目名称:ssdb，代码行数:8，代码来源:t_zset.cpp

示例6: proc_zkeys

static int proc_zkeys(Server *serv, Link *link, const Request &req, Response *resp){
	if(req.size() < 6){
		resp->push_back("client_error");
	}else{
		uint64_t limit = req[5].Uint64();
		ZIterator *it = serv->ssdb->zscan(req[1], req[2], req[3], req[4], limit);
		resp->push_back("ok");
		while(it->next()){
			resp->push_back(it->key);
		}
		delete it;
	}
	return 0;
}

开发者ID:iomato，项目名称:ssdb，代码行数:14，代码来源:proc_zset.cpp

示例7: proc_zsum

int proc_zsum(NetworkServer *net, Link *link, const Request &req, Response *resp){
	SSDBServer *serv = (SSDBServer *)net->data;
	CHECK_NUM_PARAMS(4);

	int64_t sum = 0;
	ZIterator *it = serv->ssdb->zscan(req[1], "", req[2], req[3], -1);
	while(it->next()){
		sum += str_to_int64(it->score);
	}
	delete it;
	
	resp->reply_int(0, sum);
	return 0;
}

开发者ID:sunxiaojun2014，项目名称:qssdb，代码行数:14，代码来源:proc_zset.cpp

示例8: proc_zkeys

int CommandProc::proc_zkeys(const Link &link, const Request &req, Response *resp){
	if(req.size() < 6){
		resp->push_back("client_error");
	}else{
		int limit = req[5].Int();
		ZIterator *it = ssdb->zscan(req[1], req[2], req[3], req[4], limit);
		resp->push_back("ok");
		while(it->next()){
			resp->push_back(it->key);
		}
		delete it;
	}
	return 0;
}

开发者ID:airowner，项目名称:ssdb，代码行数:14，代码来源:proc.cpp

示例9: proc_zrrange

static int proc_zrrange(Server *serv, Link *link, const Request &req, Response *resp){
	if(req.size() != 4){
		resp->push_back("client_error");
	}else{
		uint64_t offset = req[2].Uint64();
		uint64_t limit = req[3].Uint64();
		ZIterator *it = serv->ssdb->zrange(req[1], offset, limit);
		resp->push_back("ok");
		while(it->next()){
			resp->push_back(it->key);
			resp->push_back(it->score);
		}
		delete it;
	}
	return 0;
}

开发者ID:iomato，项目名称:ssdb，代码行数:16，代码来源:proc_zset.cpp

示例10: proc_zkeys

int proc_zkeys(NetworkServer *net, Link *link, const Request &req, Response *resp){
	SSDBServer *serv = (SSDBServer *)net->data;
	CHECK_NUM_PARAMS(6);

	uint64_t limit = req[5].Uint64();
	ZIterator *it = serv->ssdb->zscan(req[1], req[2], req[3], req[4], limit);
	resp->push_back("ok");
	uint64_t size = 0;
	while(it->next()){
		size += it->key.size();
		CHECK_SCAN_OUTPUT_LIMIT(size);
		resp->push_back(it->key);
	}
	delete it;
	return 0;
}

开发者ID:sunxiaojun2014，项目名称:qssdb，代码行数:16，代码来源:proc_zset.cpp

示例11: load_expiration_keys_from_db

void ExpirationHandler::load_expiration_keys_from_db(int num){
	ZIterator *it;
	it = ssdb->zscan(this->list_name, "", "", "", num);
	int n = 0;
	while(it->next()){
		n ++;
		std::string &key = it->key;
		int64_t score = str_to_int64(it->score);
		if(score < 2000000000){
			// older version compatible
			score *= 1000;
		}
		fast_keys.add(key, score);
	}
	delete it;
	log_debug("load %d keys into fast_keys", n);
}

开发者ID:beykery，项目名称:ssdb，代码行数:17，代码来源:ttl.cpp

示例12: proc_zsum

static int proc_zsum(Server *serv, Link *link, const Request &req, Response *resp){
	if(req.size() < 4){
		resp->push_back("client_error");
		return 0;
	}
	int64_t sum = 0;
	ZIterator *it = serv->ssdb->zscan(req[1], "", req[2], req[3], -1);
	while(it->next()){
		sum += str_to_int64(it->score);
	}
	delete it;
	
	char buf[20];
	snprintf(buf, sizeof(buf), "%" PRId64 "", sum);
	resp->push_back("ok");
	resp->push_back(buf);
	return 0;
}

开发者ID:denji，项目名称:ssdb，代码行数:18，代码来源:proc_zset.cpp

示例13: proc_zcount

static int proc_zcount(Server *serv, Link *link, const Request &req, Response *resp){
	if(req.size() < 4){
		resp->push_back("client_error");
		return 0;
	}
	uint64_t count = 0;
	ZIterator *it = serv->ssdb->zscan(req[1], "", req[2], req[3], -1);
	while(it->next()){
		count ++;
	}
	delete it;
	
	char buf[20];
	snprintf(buf, sizeof(buf), "%" PRIu64 "", count);
	resp->push_back("ok");
	resp->push_back(buf);
	return 0;
}

开发者ID:denji，项目名称:ssdb，代码行数:18，代码来源:proc_zset.cpp

示例14: proc_zavg

int proc_zavg(NetworkServer *net, Link *link, const Request &req, Response *resp){
	SSDBServer *serv = (SSDBServer *)net->data;
	CHECK_NUM_PARAMS(4);

	int64_t sum = 0;
	int64_t count = 0;
	ZIterator *it = serv->ssdb->zscan(req[1], "", req[2], req[3], -1);
	while(it->next()){
		sum += str_to_int64(it->score);
		count ++;
	}
	delete it;
	double avg = (double)sum/count;
	
	resp->push_back("ok");
	resp->add(avg);
	return 0;
}

开发者ID:sunxiaojun2014，项目名称:qssdb，代码行数:18，代码来源:proc_zset.cpp

示例15: proc_zremrangebyscore

int proc_zremrangebyscore(NetworkServer *net, Link *link, const Request &req, Response *resp){
	SSDBServer *serv = (SSDBServer *)net->data;
	CHECK_NUM_PARAMS(4);

	ZIterator *it = serv->ssdb->zscan(req[1], "", req[2], req[3], -1);
	int64_t count = 0;
	while(it->next()){
		count ++;
		int ret = serv->ssdb->zdel(req[1], it->key);
		if(ret == -1){
			delete it;
			resp->push_back("error");
			return 0;
		}
	}
	delete it;
	
    serv->save_kv_stats();
	resp->reply_int(0, count);
	return 0;
}

开发者ID:sunxiaojun2014，项目名称:qssdb，代码行数:21，代码来源:proc_zset.cpp

示例16: proc_zclear

static int proc_zclear(Server *serv, Link *link, const Request &req, Response *resp){
	if(req.size() < 2){
		resp->push_back("client_error");
		return 0;
	}
	
	const Bytes &name = req[1];
	uint64_t total = 0;
	while(1){
		ZIterator *it = serv->ssdb->zrange(name, 0, 1000);
		// we need std::string to hold the memory, because Bytes never alloc memory
		std::vector<std::string> s_keys;
		while(it->next()){
			s_keys.push_back(it->key);
		}
		delete it;
		
		if(s_keys.empty()){
			break;
		}
		std::vector<Bytes> keys;
		for(std::vector<std::string>::iterator it=s_keys.begin(); it!=s_keys.end(); it++){
			keys.push_back(*it);
		}
		int ret = serv->ssdb->multi_zdel(name, keys, 0);
		if(ret == -1){
			resp->push_back("error");
			break;
		}else{
			total += ret;
		}
	}
	char buf[20];
	snprintf(buf, sizeof(buf), "%"PRIu64"", total);
	resp->push_back("ok");
	resp->push_back(buf);

	return 0;
}

开发者ID:iomato，项目名称:ssdb，代码行数:39，代码来源:proc_zset.cpp

示例17: proc_zrscan

static int proc_zrscan(Server *serv, Link *link, const Request &req, Response *resp){
	if(req.size() < 6){
		resp->push_back("client_error");
	}else{
		uint64_t limit = req[5].Uint64();
		uint64_t offset = 0;
		if(req.size() > 6){
			offset = limit;
			limit = offset + req[6].Uint64();
		}
		ZIterator *it = serv->ssdb->zrscan(req[1], req[2], req[3], req[4], limit);
		if(offset > 0){
			it->skip(offset);
		}
		resp->push_back("ok");
		while(it->next()){
			resp->push_back(it->key);
			resp->push_back(it->score);
		}
		delete it;
	}
	return 0;
}

开发者ID:denji，项目名称:ssdb，代码行数:23，代码来源:proc_zset.cpp

示例18: proc_zremrangebyrank

int proc_zremrangebyrank(NetworkServer *net, Link *link, const Request &req, Response *resp){
	SSDBServer *serv = (SSDBServer *)net->data;
	CHECK_NUM_PARAMS(4);

	uint64_t start = req[2].Uint64();
	uint64_t end = req[3].Uint64();
	ZIterator *it = serv->ssdb->zrange(req[1], start, end - start + 1);
	int64_t count = 0;
	while(it->next()){
		count ++;
		int ret = serv->ssdb->zdel(req[1], it->key);
		if(ret == -1){
			resp->push_back("error");
			delete it;
			return 0;
		}
	}
	delete it;
	
    serv->save_kv_stats();
	resp->reply_int(0, count);
	return 0;
}

开发者ID:sunxiaojun2014，项目名称:qssdb，代码行数:23，代码来源:proc_zset.cpp

示例19: snprintf

void ExpirationHandler::load_expiration_keys_from_db(int64_t expired, int num){
	char data[30];
	int size = snprintf(data, sizeof(data), "%" PRId64, expired);
	if(size <= 0){
		size = 0;
	}

	ZIterator *it;
	it = ssdb->zscan(this->list_name, "", "", Bytes(data,size), num);
	int n = 0;
	while(it->next()){
		n ++;
		std::string &key = it->key;
		int64_t score = str_to_int64(it->score);
		if(score < 2000000000){
			// older version compatible
			// TODO 新老版本共存的时候，这个会有一些bug 
			score *= 1000;
		}
		fast_keys.add(key, score);
	}
	delete it;
	log_debug("load %d keys into fast_keys", n);
}

开发者ID:sunxiaojun2014，项目名称:qssdb，代码行数:24，代码来源:ttl.cpp

示例20: proc_join_zsets

/*
 * ZUNIONSTORE destination numkeys key [key ...] [WEIGHTS weight [weight ...]] [AGGREGATE SUM|MIN|MAX]
 */
static int proc_join_zsets(NetworkServer *net, Link *link, const Request &req, Response *resp, int type){
    int offset = 3;
	SSDBServer *serv = (SSDBServer *)net->data;
	CHECK_NUM_PARAMS(offset);

    int numkeys = req[2].Int();
    int size = numkeys + offset;
    if (numkeys <= 0 || req.size() < size) {
		resp->reply_client_error("wrong number of arguments"); 
        return 0;
    }
    
    std::vector<int> weights;
    int aggregate_type = AGGREGATE_SUM_TYPE;

    for (int i = size; i < req.size();) {
        if (req[i] == "weights") {
            CHECK_NUM_PARAMS(i + 1 + numkeys);
            for (int j = 1; j <= numkeys; j ++) {
                weights.push_back(req[i + j].Int());
            }
            i += numkeys + 1;
        } else if (req[i] == "aggregate") {
            CHECK_NUM_PARAMS(i + 2);
            if (req[i+1] == "sum") {
                aggregate_type = AGGREGATE_SUM_TYPE;
            } else if (req[i+1] == "min") {
                aggregate_type = AGGREGATE_MIN_TYPE;
            } else if (req[i+1] == "max") {
                aggregate_type = AGGREGATE_MAX_TYPE;
            } else {
                resp->reply_client_error("wrong format of arguments"); 
                return 0;
            }
            i += 2;
        } else {
            resp->reply_client_error("wrong format of arguments"); 
            return 0;
        }
    }

    if (weights.empty()) {
        for (int i = 0; i < numkeys; i ++) {
            weights.push_back(1);
        }
    }

    int min_len = -1, min_index = 0;
    std::vector< std::map<std::string,int64_t> > vectors; 
    for (int i = offset; i < offset + numkeys; i ++) {
        std::map<std::string,int64_t> key_scores;
        // FIXME 控制大小,防止内存爆掉
	    ZIterator *it = serv->ssdb->zscan(req[i], "", "", "", SSDB_MAX_SCAN_LEN);
        while(it->next()){
            int64_t score = str_to_int64(it->score) * weights[i-offset];
            key_scores[it->key] = score;
        }
	    delete it;
        if (key_scores.size() == 0 && type == INTER_TYPE) {
            resp->reply_int(0, 0);
            return 0;
        }
        vectors.push_back(key_scores);
        if (min_len == -1 || min_len > key_scores.size()) {
            min_len = key_scores.size();
            min_index = i - offset;
        }
    }

    std::map<std::string,int64_t> result;
    if (type == INTER_TYPE) {
        result = vectors[min_index]; // copy sets
        for (std::map<std::string,int64_t>::iterator it = vectors[min_index].begin(); it != vectors[min_index].end(); it ++) {
            std::string key = it->first;
            int64_t score = it->second;
            for (int i = 0; i < vectors.size(); i ++) {
                if (i == min_index) {
                    continue;
                }
                std::map<std::string,int64_t>::iterator fit = vectors[i].find(key);
                if (fit == vectors[i].end()){
                    // remove
                    result.erase(key);
                    break;
                } else {
                    if (aggregate_type == AGGREGATE_MIN_TYPE) {
                        result[key] = score < fit->second ?  score : fit->second;
                    } else if (aggregate_type == AGGREGATE_MAX_TYPE) {
                        result[key] = score > fit->second ? score : fit->second;
                    } else {
                        result[key] = score + fit->second;
                    }
                }
           }
        }
    } else if (type == UNION_TYPE) {
        for (int i = 0; i < vectors.size(); i ++) {
//.........这里部分代码省略.........

开发者ID:sunxiaojun2014，项目名称:qssdb，代码行数:101，代码来源:proc_zset.cpp

注：本文中的ZIterator类示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。