67 lines
2.5 KiB
JavaScript
67 lines
2.5 KiB
JavaScript
|
"use strict";
|
||
|
|
Object.defineProperty(exports, "__esModule", { value: true });
|
||
|
|
exports.DistinctOperation = void 0;
|
||
|
|
const utils_1 = require("../utils");
|
||
|
|
const command_1 = require("./command");
|
||
|
|
const operation_1 = require("./operation");
|
||
|
|
/**
|
||
|
|
* Return a list of distinct values for the given key across a collection.
|
||
|
|
* @internal
|
||
|
|
*/
|
||
|
|
class DistinctOperation extends command_1.CommandOperation {
|
||
|
|
/**
|
||
|
|
* Construct a Distinct operation.
|
||
|
|
*
|
||
|
|
* @param collection - Collection instance.
|
||
|
|
* @param key - Field of the document to find distinct values for.
|
||
|
|
* @param query - The query for filtering the set of documents to which we apply the distinct filter.
|
||
|
|
* @param options - Optional settings. See Collection.prototype.distinct for a list of options.
|
||
|
|
*/
|
||
|
|
constructor(collection, key, query, options) {
|
||
|
|
super(collection, options);
|
||
|
|
this.options = options !== null && options !== void 0 ? options : {};
|
||
|
|
this.collection = collection;
|
||
|
|
this.key = key;
|
||
|
|
this.query = query;
|
||
|
|
}
|
||
|
|
execute(server, session, callback) {
|
||
|
|
const coll = this.collection;
|
||
|
|
const key = this.key;
|
||
|
|
const query = this.query;
|
||
|
|
const options = this.options;
|
||
|
|
// Distinct command
|
||
|
|
const cmd = {
|
||
|
|
distinct: coll.collectionName,
|
||
|
|
key: key,
|
||
|
|
query: query
|
||
|
|
};
|
||
|
|
// Add maxTimeMS if defined
|
||
|
|
if (typeof options.maxTimeMS === 'number') {
|
||
|
|
cmd.maxTimeMS = options.maxTimeMS;
|
||
|
|
}
|
||
|
|
// we check for undefined specifically here to allow falsy values
|
||
|
|
// eslint-disable-next-line no-restricted-syntax
|
||
|
|
if (typeof options.comment !== 'undefined') {
|
||
|
|
cmd.comment = options.comment;
|
||
|
|
}
|
||
|
|
// Do we have a readConcern specified
|
||
|
|
(0, utils_1.decorateWithReadConcern)(cmd, coll, options);
|
||
|
|
// Have we specified collation
|
||
|
|
try {
|
||
|
|
(0, utils_1.decorateWithCollation)(cmd, coll, options);
|
||
|
|
}
|
||
|
|
catch (err) {
|
||
|
|
return callback(err);
|
||
|
|
}
|
||
|
|
super.executeCommand(server, session, cmd, (err, result) => {
|
||
|
|
if (err) {
|
||
|
|
callback(err);
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
callback(undefined, this.explain ? result : result.values);
|
||
|
|
});
|
||
|
|
}
|
||
|
|
}
|
||
|
|
exports.DistinctOperation = DistinctOperation;
|
||
|
|
(0, operation_1.defineAspects)(DistinctOperation, [operation_1.Aspect.READ_OPERATION, operation_1.Aspect.RETRYABLE, operation_1.Aspect.EXPLAINABLE]);
|
||
|
|
//# sourceMappingURL=distinct.js.map
|