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sortedSetIntersectionCard

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This commit is contained in:
barisusakli
2016-09-16 13:01:11 +03:00
parent 814c4103ad
commit 990ecc8cd2
4 changed files with 78 additions and 4 deletions
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27
src/database/redis/sorted.js
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@@ -93,7 +93,7 @@ module.exports = function(redisClient, module) {
function sortedSetRange(method, key, start, stop, withScores, callback) {
if (Array.isArray(key)) {
return sortedSetUnion(method, key, start, stop, withScores, callback);
return sortedSetUnion({method: method, sets: key, start: start, stop: stop, withScores: withScores}, callback);
}
var params = [key, start, stop];
@@ -265,7 +265,7 @@ module.exports = function(redisClient, module) {
var rangeParams = [tempSetName, params.start, params.stop];
if (params.withScores) {
params.push('WITHSCORES');
rangeParams.push('WITHSCORES');
}
var multi = redisClient.multi();
@@ -302,6 +302,27 @@ module.exports = function(redisClient, module) {
redisClient.zrangebylex([key, min, max, 'LIMIT', start, count], callback);
};
module.sortedSetIntersectCard = function(keys, callback) {
if (!Array.isArray(keys) || !keys.length) {
return callback(null, 0);
}
var tempSetName = 'temp_' + Date.now();
var interParams = [tempSetName, keys.length].concat(keys);
var multi = redisClient.multi();
multi.zinterstore(interParams);
multi.zcard(tempSetName);
multi.del(tempSetName);
multi.exec(function(err, results) {
if (err) {
return callback(err);
}
callback(null, results[1] || 0);
});
};
module.getSortedSetIntersect = function(params, callback) {
params.method = 'zrange';
getSortedSetRevIntersect(params, callback);
@@ -312,7 +333,7 @@ module.exports = function(redisClient, module) {
getSortedSetRevIntersect(params, callback);
};
function getSortedSetRevIntersect (params, callback) {
function getSortedSetRevIntersect(params, callback) {
var sets = params.sets;
var start = params.hasOwnProperty('start') ? params.start : 0;
var stop = params.hasOwnProperty('stop') ? params.stop : -1;