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svrjs-blog-newsletter/backend/node_modules/mongodb/lib/operations/find.js
2024-05-26 22:54:55 +02:00

156 lines
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5.6 KiB
JavaScript

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.FindOperation = void 0;
const error_1 = require("../error");
const read_concern_1 = require("../read_concern");
const sort_1 = require("../sort");
const utils_1 = require("../utils");
const command_1 = require("./command");
const operation_1 = require("./operation");
/** @internal */
class FindOperation extends command_1.CommandOperation {
constructor(collection, ns, filter = {}, options = {}) {
super(collection, options);
this.options = { ...options };
delete this.options.writeConcern;
this.ns = ns;
if (typeof filter !== 'object' || Array.isArray(filter)) {
throw new error_1.MongoInvalidArgumentError('Query filter must be a plain object or ObjectId');
}
// If the filter is a buffer, validate that is a valid BSON document
if (Buffer.isBuffer(filter)) {
const objectSize = filter[0] | (filter[1] << 8) | (filter[2] << 16) | (filter[3] << 24);
if (objectSize !== filter.length) {
throw new error_1.MongoInvalidArgumentError(`Query filter raw message size does not match message header size [${filter.length}] != [${objectSize}]`);
}
}
// special case passing in an ObjectId as a filter
this.filter = filter != null && filter._bsontype === 'ObjectID' ? { _id: filter } : filter;
}
execute(server, session, callback) {
this.server = server;
const options = this.options;
let findCommand = makeFindCommand(this.ns, this.filter, options);
if (this.explain) {
findCommand = (0, utils_1.decorateWithExplain)(findCommand, this.explain);
}
server.command(this.ns, findCommand, {
...this.options,
...this.bsonOptions,
documentsReturnedIn: 'firstBatch',
session
}, callback);
}
}
exports.FindOperation = FindOperation;
function makeFindCommand(ns, filter, options) {
const findCommand = {
find: ns.collection,
filter
};
if (options.sort) {
findCommand.sort = (0, sort_1.formatSort)(options.sort);
}
if (options.projection) {
let projection = options.projection;
if (projection && Array.isArray(projection)) {
projection = projection.length
? projection.reduce((result, field) => {
result[field] = 1;
return result;
}, {})
: { _id: 1 };
}
findCommand.projection = projection;
}
if (options.hint) {
findCommand.hint = (0, utils_1.normalizeHintField)(options.hint);
}
if (typeof options.skip === 'number') {
findCommand.skip = options.skip;
}
if (typeof options.limit === 'number') {
if (options.limit < 0) {
findCommand.limit = -options.limit;
findCommand.singleBatch = true;
}
else {
findCommand.limit = options.limit;
}
}
if (typeof options.batchSize === 'number') {
if (options.batchSize < 0) {
if (options.limit &&
options.limit !== 0 &&
Math.abs(options.batchSize) < Math.abs(options.limit)) {
findCommand.limit = -options.batchSize;
}
findCommand.singleBatch = true;
}
else {
findCommand.batchSize = options.batchSize;
}
}
if (typeof options.singleBatch === 'boolean') {
findCommand.singleBatch = options.singleBatch;
}
// we check for undefined specifically here to allow falsy values
// eslint-disable-next-line no-restricted-syntax
if (options.comment !== undefined) {
findCommand.comment = options.comment;
}
if (typeof options.maxTimeMS === 'number') {
findCommand.maxTimeMS = options.maxTimeMS;
}
const readConcern = read_concern_1.ReadConcern.fromOptions(options);
if (readConcern) {
findCommand.readConcern = readConcern.toJSON();
}
if (options.max) {
findCommand.max = options.max;
}
if (options.min) {
findCommand.min = options.min;
}
if (typeof options.returnKey === 'boolean') {
findCommand.returnKey = options.returnKey;
}
if (typeof options.showRecordId === 'boolean') {
findCommand.showRecordId = options.showRecordId;
}
if (typeof options.tailable === 'boolean') {
findCommand.tailable = options.tailable;
}
if (typeof options.oplogReplay === 'boolean') {
findCommand.oplogReplay = options.oplogReplay;
}
if (typeof options.timeout === 'boolean') {
findCommand.noCursorTimeout = !options.timeout;
}
else if (typeof options.noCursorTimeout === 'boolean') {
findCommand.noCursorTimeout = options.noCursorTimeout;
}
if (typeof options.awaitData === 'boolean') {
findCommand.awaitData = options.awaitData;
}
if (typeof options.allowPartialResults === 'boolean') {
findCommand.allowPartialResults = options.allowPartialResults;
}
if (options.collation) {
findCommand.collation = options.collation;
}
if (typeof options.allowDiskUse === 'boolean') {
findCommand.allowDiskUse = options.allowDiskUse;
}
if (options.let) {
findCommand.let = options.let;
}
return findCommand;
}
(0, operation_1.defineAspects)(FindOperation, [
operation_1.Aspect.READ_OPERATION,
operation_1.Aspect.RETRYABLE,
operation_1.Aspect.EXPLAINABLE,
operation_1.Aspect.CURSOR_CREATING
]);
//# sourceMappingURL=find.js.map