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var Document = require('../document');
var PromiseProvider = require('../promise_provider');
module.exports = Subdocument;
/**
* Subdocument constructor.
*
* @inherits Document
* @api private
*/
function Subdocument(value, fields) {
this.$isSingleNested = true;
Document.call(this, value, fields);
}
Subdocument.prototype = Object.create(Document.prototype);
Subdocument.prototype.toBSON = function() {
return this.toObject({ transform: false });
};
/**
* Used as a stub for [hooks.js](https://github.com/bnoguchi/hooks-js/tree/31ec571cef0332e21121ee7157e0cf9728572cc3)
*
* ####NOTE:
*
* _This is a no-op. Does not actually save the doc to the db._
*
* @param {Function} [fn]
* @return {Promise} resolved Promise
* @api private
*/
Subdocument.prototype.save = function(fn) {
var Promise = PromiseProvider.get();
return new Promise.ES6(function(resolve) {
fn && fn();
resolve();
});
};
Subdocument.prototype.$isValid = function(path) {
if (this.$parent) {
return this.$parent.$isValid([this.$basePath, path].join('.'));
}
};
Subdocument.prototype.markModified = function(path) {
Document.prototype.markModified.call(this, path);
if (this.$parent) {
if (this.$parent.isDirectModified(this.$basePath)) {
return;
}
this.$parent.markModified([this.$basePath, path].join('.'));
}
};
Subdocument.prototype.$markValid = function(path) {
if (this.$parent) {
this.$parent.$markValid([this.$basePath, path].join('.'));
}
};
Subdocument.prototype.invalidate = function(path, err, val) {
Document.prototype.invalidate.call(this, path, err, val);
if (this.$parent) {
this.$parent.invalidate([this.$basePath, path].join('.'), err, val);
} else if (err.kind === 'cast' || err.name === 'CastError') {
throw err;
}
};
/**
* Returns the top level document of this sub-document.
*
* @return {Document}
*/
Subdocument.prototype.ownerDocument = function() {
if (this.$__.ownerDocument) {
return this.$__.ownerDocument;
}
var parent = this.$parent;
if (!parent) {
return this;
}
while (parent.$parent || parent.__parent) {
parent = parent.$parent || parent.__parent;
}
this.$__.ownerDocument = parent;
return this.$__.ownerDocument;
};
/**
* Null-out this subdoc
*
* @param {Object} [options]
* @param {Function} [callback] optional callback for compatibility with Document.prototype.remove
*/
Subdocument.prototype.remove = function(options, callback) {
if (typeof options === 'function') {
callback = options;
options = null;
}
// If removing entire doc, no need to remove subdoc
if (!options || !options.noop) {
this.$parent.set(this.$basePath, null);
registerRemoveListener(this);
}
if (typeof callback === 'function') {
callback(null);
}
};
/*!
* ignore
*/
Subdocument.prototype.populate = function() {
throw new Error('Mongoose does not support calling populate() on nested ' +
'docs. Instead of `doc.nested.populate("path")`, use ' +
'`doc.populate("nested.path")`');
};
/*!
* Registers remove event listeners for triggering
* on subdocuments.
*
* @param {EmbeddedDocument} sub
* @api private
*/
function registerRemoveListener(sub) {
var owner = sub.ownerDocument();
function emitRemove() {
owner.removeListener('save', emitRemove);
owner.removeListener('remove', emitRemove);
sub.emit('remove', sub);
owner = sub = null;
}
owner.on('save', emitRemove);
owner.on('remove', emitRemove);
}
|
