333
schangxiang@126.com
2025-09-19 18966e02fb573c7e2bb0c6426ed792b38b910940
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
'use strict';
 
const OperationBase = require('./operation').OperationBase;
const Aspect = require('./operation').Aspect;
const defineAspects = require('./operation').defineAspects;
const resolveReadPreference = require('../utils').resolveReadPreference;
 
class FindOperation extends OperationBase {
  constructor(collection, ns, command, options) {
    super(options);
 
    this.ns = ns;
    this.cmd = command;
    this.readPreference = resolveReadPreference(collection, this.options);
  }
 
  execute(server, callback) {
    // copied from `CommandOperationV2`, to be subclassed in the future
    this.server = server;
 
    const cursorState = this.cursorState || {};
 
    // TOOD: use `MongoDBNamespace` through and through
    server.query(this.ns.toString(), this.cmd, cursorState, this.options, callback);
  }
}
 
defineAspects(FindOperation, [
  Aspect.READ_OPERATION,
  Aspect.RETRYABLE,
  Aspect.EXECUTE_WITH_SELECTION,
  Aspect.SKIP_SESSION
]);
 
module.exports = FindOperation;