Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 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 | 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 { RedisToken } from "../../protocol/redis-token";
import { IRespCommand } from "../resp-command";
/**
* ### Available since 1.0.0.
* ### LLEN key
*
* Returns the length of the list stored at key. If key does not exist, it is interpreted
* as an empty list and 0 is returned. An error is returned when the value stored at key is
* not a list.
*
* ### Return value
* Integer reply: the length of the list at key.
*/
export class LLenCommand extends IRespCommand {
public DbDataType = DataType.LIST
public maxParams = 1
public minParams = 1
public name = "llen"
private logger: Logger = new Logger(module.id);
public execSync(request: IRequest, db: Database): RedisToken {
this.logger.debug(
`${request.getCommand()}.execute(%s)`,
...request.getParams()
);
const key: string = request.getParam(0),
list: DatabaseValue = db.get(key);
this.logger.debug(`Getting list "${key}"`);
if (!list) {
this.logger.debug(`LIST ${key} does not exist. Returning 0`);
return RedisToken.integer(0);
}
this.logger.debug(`Returning list size ${list.getList().length}`);
return RedisToken.integer(list.getList().length);
}
}
|