organize dbal sorted code

src/database/redis/sorted/remove.js

@@ -0,0 +1,38 @@
+
+'use strict';
+
+module.exports = function (redisClient, module) {
+
+	var helpers = module.helpers.redis;
+
+	module.sortedSetRemove = function (key, value, callback) {
+		callback = callback || function () {};
+		if (!value) {
+			return callback();
+		}
+		if (!Array.isArray(value)) {
+			value = [value];
+		}
+
+		helpers.multiKeyValues(redisClient, 'zrem', key, value, function (err) {
+			callback(err);
+		});
+	};
+
+	module.sortedSetsRemove = function (keys, value, callback) {
+		helpers.multiKeysValue(redisClient, 'zrem', keys, value, function (err) {
+			callback(err);
+		});
+	};
+
+	module.sortedSetsRemoveRangeByScore = function (keys, min, max, callback) {
+		callback = callback || function () {};
+		var multi = redisClient.multi();
+		for(var i = 0; i < keys.length; ++i) {
+			multi.zremrangebyscore(keys[i], min, max);
+		}
+		multi.exec(function (err) {
+			callback(err);
+		});
+	};
+};