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/*!
* Module dependencies.
*/
var Mixed = require('../schema/mixed');
var ValidationError = require('../error/validation');
var parallel = require('async/parallel');
var flatten = require('./common').flatten;
var modifiedPaths = require('./common').modifiedPaths;
/**
* Applies validators and defaults to update and findOneAndUpdate operations,
* specifically passing a null doc as `this` to validators and defaults
*
* @param {Query} query
* @param {Schema} schema
* @param {Object} castedDoc
* @param {Object} options
* @method runValidatorsOnUpdate
* @api private
*/
module.exports = function(query, schema, castedDoc, options) {
var _keys;
var keys = Object.keys(castedDoc || {});
var updatedKeys = {};
var updatedValues = {};
var arrayAtomicUpdates = {};
var numKeys = keys.length;
var hasDollarUpdate = false;
var modified = {};
var currentUpdate;
var key;
for (var i = 0; i < numKeys; ++i) {
if (keys[i].charAt(0) === '$') {
hasDollarUpdate = true;
if (keys[i] === '$push' || keys[i] === '$addToSet') {
_keys = Object.keys(castedDoc[keys[i]]);
for (var ii = 0; ii < _keys.length; ++ii) {
currentUpdate = castedDoc[keys[i]][_keys[ii]];
if (currentUpdate && currentUpdate.$each) {
arrayAtomicUpdates[_keys[ii]] = (arrayAtomicUpdates[_keys[ii]] || []).
concat(currentUpdate.$each);
} else {
arrayAtomicUpdates[_keys[ii]] = (arrayAtomicUpdates[_keys[ii]] || []).
concat([currentUpdate]);
}
}
continue;
}
modifiedPaths(castedDoc[keys[i]], '', modified);
var flat = flatten(castedDoc[keys[i]]);
var paths = Object.keys(flat);
var numPaths = paths.length;
for (var j = 0; j < numPaths; ++j) {
var updatedPath = paths[j].replace('.$.', '.0.');
updatedPath = updatedPath.replace(/\.\$$/, '.0');
key = keys[i];
if (key === '$set' || key === '$setOnInsert' ||
key === '$pull' || key === '$pullAll') {
updatedValues[updatedPath] = flat[paths[j]];
} else if (key === '$unset') {
updatedValues[updatedPath] = undefined;
}
updatedKeys[updatedPath] = true;
}
}
}
if (!hasDollarUpdate) {
modifiedPaths(castedDoc, '', modified);
updatedValues = flatten(castedDoc);
updatedKeys = Object.keys(updatedValues);
}
var updates = Object.keys(updatedValues);
var numUpdates = updates.length;
var validatorsToExecute = [];
var validationErrors = [];
function iter(i, v) {
var schemaPath = schema._getSchema(updates[i]);
if (schemaPath) {
// gh-4305: `_getSchema()` will report all sub-fields of a 'Mixed' path
// as 'Mixed', so avoid double validating them.
if (schemaPath instanceof Mixed && schemaPath.$fullPath !== updates[i]) {
return;
}
validatorsToExecute.push(function(callback) {
schemaPath.doValidate(
v,
function(err) {
if (err) {
err.path = updates[i];
validationErrors.push(err);
}
callback(null);
},
options && options.context === 'query' ? query : null,
{updateValidator: true});
});
}
}
for (i = 0; i < numUpdates; ++i) {
iter(i, updatedValues[updates[i]]);
}
var arrayUpdates = Object.keys(arrayAtomicUpdates);
var numArrayUpdates = arrayUpdates.length;
for (i = 0; i < numArrayUpdates; ++i) {
(function(i) {
var schemaPath = schema._getSchema(arrayUpdates[i]);
if (schemaPath && schemaPath.$isMongooseDocumentArray) {
validatorsToExecute.push(function(callback) {
schemaPath.doValidate(
arrayAtomicUpdates[arrayUpdates[i]],
function(err) {
if (err) {
err.path = arrayUpdates[i];
validationErrors.push(err);
}
callback(null);
},
options && options.context === 'query' ? query : null);
});
} else {
schemaPath = schema._getSchema(arrayUpdates[i] + '.0');
for (var j = 0; j < arrayAtomicUpdates[arrayUpdates[i]].length; ++j) {
(function(j) {
validatorsToExecute.push(function(callback) {
schemaPath.doValidate(
arrayAtomicUpdates[arrayUpdates[i]][j],
function(err) {
if (err) {
err.path = arrayUpdates[i];
validationErrors.push(err);
}
callback(null);
},
options && options.context === 'query' ? query : null,
{ updateValidator: true });
});
})(j);
}
}
})(i);
}
return function(callback) {
parallel(validatorsToExecute, function() {
if (validationErrors.length) {
var err = new ValidationError(null);
for (var i = 0; i < validationErrors.length; ++i) {
err.addError(validationErrors[i].path, validationErrors[i]);
}
return callback(err);
}
callback(null);
});
};
};