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102 lines
2.7 KiB
JavaScript

/*!
* Module dependencies.
*/
'use strict';
const NodeJSDocument = require('./document');
const EventEmitter = require('events').EventEmitter;
const MongooseError = require('./error/index');
const Schema = require('./schema');
const ObjectId = require('./types/objectid');
const ValidationError = MongooseError.ValidationError;
const applyHooks = require('./helpers/model/applyHooks');
const isObject = require('./helpers/isObject');
/**
* Document constructor.
*
* @param {Object} obj the values to set
* @param {Object} schema
* @param {Object} [fields] optional object containing the fields which were selected in the query returning this document and any populated paths data
* @param {Boolean} [skipId] bool, should we auto create an ObjectId _id
* @inherits NodeJS EventEmitter https://nodejs.org/api/events.html#class-eventemitter
* @event `init`: Emitted on a document after it has was retrieved from the db and fully hydrated by Mongoose.
* @event `save`: Emitted when the document is successfully saved
* @api private
*/
function Document(obj, schema, fields, skipId, skipInit) {
if (!(this instanceof Document)) {
return new Document(obj, schema, fields, skipId, skipInit);
}
if (isObject(schema) && !schema.instanceOfSchema) {
schema = new Schema(schema);
}
// When creating EmbeddedDocument, it already has the schema and he doesn't need the _id
schema = this.schema || schema;
// Generate ObjectId if it is missing, but it requires a scheme
if (!this.schema && schema.options._id) {
obj = obj || {};
if (obj._id === undefined) {
obj._id = new ObjectId();
}
}
if (!schema) {
throw new MongooseError.MissingSchemaError();
}
this.$__setSchema(schema);
NodeJSDocument.call(this, obj, fields, skipId, skipInit);
applyHooks(this, schema, { decorateDoc: true });
// apply methods
for (const m in schema.methods) {
this[m] = schema.methods[m];
}
// apply statics
for (const s in schema.statics) {
this[s] = schema.statics[s];
}
}
/*!
* Inherit from the NodeJS document
*/
Document.prototype = Object.create(NodeJSDocument.prototype);
Document.prototype.constructor = Document;
/*!
* ignore
*/
Document.events = new EventEmitter();
/*!
* Browser doc exposes the event emitter API
*/
Document.$emitter = new EventEmitter();
['on', 'once', 'emit', 'listeners', 'removeListener', 'setMaxListeners',
'removeAllListeners', 'addListener'].forEach(function(emitterFn) {
Document[emitterFn] = function() {
return Document.$emitter[emitterFn].apply(Document.$emitter, arguments);
};
});
/*!
* Module exports.
*/
Document.ValidationError = ValidationError;
module.exports = exports = Document;