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