37 lines
1.4 KiB
JavaScript
37 lines
1.4 KiB
JavaScript
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"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.CountDocumentsOperation = void 0;
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const aggregate_1 = require("./aggregate");
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/** @internal */
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class CountDocumentsOperation extends aggregate_1.AggregateOperation {
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constructor(collection, query, options) {
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const pipeline = [];
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pipeline.push({ $match: query });
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if (typeof options.skip === 'number') {
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pipeline.push({ $skip: options.skip });
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}
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if (typeof options.limit === 'number') {
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pipeline.push({ $limit: options.limit });
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}
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pipeline.push({ $group: { _id: 1, n: { $sum: 1 } } });
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super(collection.s.namespace, pipeline, options);
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}
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execute(server, session, callback) {
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super.execute(server, session, (err, result) => {
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if (err || !result) {
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callback(err);
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return;
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}
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// NOTE: We're avoiding creating a cursor here to reduce the callstack.
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const response = result;
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if (response.cursor == null || response.cursor.firstBatch == null) {
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callback(undefined, 0);
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return;
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}
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const docs = response.cursor.firstBatch;
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callback(undefined, docs.length ? docs[0].n : 0);
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});
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}
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}
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exports.CountDocumentsOperation = CountDocumentsOperation;
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//# sourceMappingURL=count_documents.js.map
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