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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 | 1x 1x 1x 1x 1x 1x 1x 4x 4x 4x 4x 4x | import { Logger } from "../../../logger";
import { IRequest } from "../../../server/request";
import { DataType } from "../../data/data-type";
import { Database } from "../../data/database";
import { DatabaseValue } from "../../data/database-value";
import { SortedSet } from "../../data/sorted-set";
import { RedisToken } from "../../protocol/redis-token";
import { IRespCommand } from "../resp-command";
/**
* Available since 1.2.0.
*
* ZCARD key
*
* Returns the sorted set cardinality (number of elements) of the sorted set stored at key.
*
* **Return value**<br>
* Integer reply: the cardinality (number of elements) of the sorted set, or 0 if key does not exist.
*/
export class ZCardCommand extends IRespCommand {
public DbDataType = DataType.ZSET
public maxParams = 1
public minParams = 1
public name = "zcard"
private logger: Logger = new Logger(module.id);
public execSync(request: IRequest, db: Database): RedisToken {
this.logger.debug(
`${request.getCommand()}.execute(%s)`,
...request.getParams()
);
const zkey: string = request.getParam(0);
let result: number = 0;
const dbKey: DatabaseValue = db.getOrDefault(
zkey,
new DatabaseValue(
DataType.ZSET,
new SortedSet()
)
);
result = dbKey.getSortedSet().card();
return RedisToken.integer(result);
}
}
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