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embedded.js
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embedded.js
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'use strict';
/*!
* Module dependencies.
*/
var $exists = require('./operators/exists');
var EventEmitter = require('events').EventEmitter;
var SchemaType = require('../schematype');
var Subdocument = require('../types/subdocument');
var applyHooks = require('../services/model/applyHooks');
var castToNumber = require('./operators/helpers').castToNumber;
var geospatial = require('./operators/geospatial');
module.exports = Embedded;
/**
* Sub-schema schematype constructor
*
* @param {Schema} schema
* @param {String} key
* @param {Object} options
* @inherits SchemaType
* @api public
*/
function Embedded(schema, path, options) {
var _embedded = function SingleNested(value, path, parent) {
var _this = this;
Subdocument.apply(this, arguments);
this.$parent = parent;
if (parent) {
parent.on('save', function() {
_this.emit('save', _this);
_this.constructor.emit('save', _this);
});
parent.on('isNew', function(val) {
_this.isNew = val;
_this.emit('isNew', val);
_this.constructor.emit('isNew', val);
});
}
};
_embedded.prototype = Object.create(Subdocument.prototype);
_embedded.prototype.$__setSchema(schema);
_embedded.prototype.constructor = _embedded;
_embedded.schema = schema;
_embedded.$isSingleNested = true;
_embedded.prototype.$basePath = path;
_embedded.prototype.toBSON = function() {
return this.toObject({
transform: false,
retainKeyOrder: schema.options.retainKeyOrder,
virtuals: false,
_skipDepopulateTopLevel: true,
depopulate: true,
flattenDecimals: false
});
};
// apply methods
for (var i in schema.methods) {
_embedded.prototype[i] = schema.methods[i];
}
// apply statics
for (i in schema.statics) {
_embedded[i] = schema.statics[i];
}
for (i in EventEmitter.prototype) {
_embedded[i] = EventEmitter.prototype[i];
}
applyHooks(_embedded, schema);
this.caster = _embedded;
this.schema = schema;
this.$isSingleNested = true;
SchemaType.call(this, path, options, 'Embedded');
}
Embedded.prototype = Object.create(SchemaType.prototype);
/**
* Special case for when users use a common location schema to represent
* locations for use with $geoWithin.
* https://docs.mongodb.org/manual/reference/operator/query/geoWithin/
*
* @param {Object} val
* @api private
*/
Embedded.prototype.$conditionalHandlers.$geoWithin = function(val) {
return { $geometry: this.castForQuery(val.$geometry) };
};
/*!
* ignore
*/
Embedded.prototype.$conditionalHandlers.$near =
Embedded.prototype.$conditionalHandlers.$nearSphere = geospatial.cast$near;
Embedded.prototype.$conditionalHandlers.$within =
Embedded.prototype.$conditionalHandlers.$geoWithin = geospatial.cast$within;
Embedded.prototype.$conditionalHandlers.$geoIntersects =
geospatial.cast$geoIntersects;
Embedded.prototype.$conditionalHandlers.$minDistance = castToNumber;
Embedded.prototype.$conditionalHandlers.$maxDistance = castToNumber;
Embedded.prototype.$conditionalHandlers.$exists = $exists;
/**
* Casts contents
*
* @param {Object} value
* @api private
*/
Embedded.prototype.cast = function(val, doc, init) {
if (val && val.$isSingleNested) {
return val;
}
var subdoc = new this.caster(void 0, doc ? doc.$__.selected : void 0, doc);
if (init) {
subdoc.init(val);
} else {
subdoc.set(val, undefined, true);
}
return subdoc;
};
/**
* Casts contents for query
*
* @param {string} [$conditional] optional query operator (like `$eq` or `$in`)
* @param {any} value
* @api private
*/
Embedded.prototype.castForQuery = function($conditional, val) {
var handler;
if (arguments.length === 2) {
handler = this.$conditionalHandlers[$conditional];
if (!handler) {
throw new Error('Can\'t use ' + $conditional);
}
return handler.call(this, val);
}
val = $conditional;
if (val == null) {
return val;
}
return new this.caster(val);
};
/**
* Async validation on this single nested doc.
*
* @api private
*/
Embedded.prototype.doValidate = function(value, fn, scope) {
var Constructor = this.caster;
SchemaType.prototype.doValidate.call(this, value, function(error) {
if (error) {
return fn(error);
}
if (!value) {
return fn(null);
}
if (!(value instanceof Constructor)) {
value = new Constructor(value);
}
value.validate(fn, {__noPromise: true});
}, scope);
};
/**
* Synchronously validate this single nested doc
*
* @api private
*/
Embedded.prototype.doValidateSync = function(value, scope) {
var schemaTypeError = SchemaType.prototype.doValidateSync.call(this, value, scope);
if (schemaTypeError) {
return schemaTypeError;
}
if (!value) {
return;
}
return value.validateSync();
};