You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
505 lines
17 KiB
505 lines
17 KiB
'use strict';
|
|
|
|
const MongooseError = require('../../error/index');
|
|
const SkipPopulateValue = require('./SkipPopulateValue');
|
|
const get = require('../get');
|
|
const getDiscriminatorByValue = require('../discriminator/getDiscriminatorByValue');
|
|
const isPathExcluded = require('../projection/isPathExcluded');
|
|
const getSchemaTypes = require('./getSchemaTypes');
|
|
const getVirtual = require('./getVirtual');
|
|
const normalizeRefPath = require('./normalizeRefPath');
|
|
const util = require('util');
|
|
const utils = require('../../utils');
|
|
|
|
const modelSymbol = require('../symbols').modelSymbol;
|
|
const populateModelSymbol = require('../symbols').populateModelSymbol;
|
|
const schemaMixedSymbol = require('../../schema/symbols').schemaMixedSymbol;
|
|
|
|
module.exports = function getModelsMapForPopulate(model, docs, options) {
|
|
let i;
|
|
let doc;
|
|
const len = docs.length;
|
|
const available = {};
|
|
const map = [];
|
|
const modelNameFromQuery = options.model && options.model.modelName || options.model;
|
|
let schema;
|
|
let refPath;
|
|
let Model;
|
|
let currentOptions;
|
|
let modelNames;
|
|
let modelName;
|
|
let modelForFindSchema;
|
|
|
|
const originalModel = options.model;
|
|
let isVirtual = false;
|
|
const modelSchema = model.schema;
|
|
|
|
let allSchemaTypes = getSchemaTypes(modelSchema, null, options.path);
|
|
allSchemaTypes = Array.isArray(allSchemaTypes) ? allSchemaTypes : [allSchemaTypes].filter(v => v != null);
|
|
const _firstWithRefPath = allSchemaTypes.find(schematype => get(schematype, 'options.refPath', null) != null);
|
|
|
|
for (i = 0; i < len; i++) {
|
|
doc = docs[i];
|
|
|
|
schema = getSchemaTypes(modelSchema, doc, options.path);
|
|
// Special case: populating a path that's a DocumentArray unless
|
|
// there's an explicit `ref` or `refPath` re: gh-8946
|
|
if (schema != null &&
|
|
schema.$isMongooseDocumentArray &&
|
|
schema.options.ref == null &&
|
|
schema.options.refPath == null) {
|
|
continue;
|
|
}
|
|
// Populating a nested path should always be a no-op re: #9073.
|
|
// People shouldn't do this, but apparently they do.
|
|
if (modelSchema.nested[options.path]) {
|
|
continue;
|
|
}
|
|
const isUnderneathDocArray = schema && schema.$isUnderneathDocArray;
|
|
if (isUnderneathDocArray && get(options, 'options.sort') != null) {
|
|
return new MongooseError('Cannot populate with `sort` on path ' + options.path +
|
|
' because it is a subproperty of a document array');
|
|
}
|
|
|
|
modelNames = null;
|
|
let isRefPath = !!_firstWithRefPath;
|
|
let normalizedRefPath = _firstWithRefPath ? get(_firstWithRefPath, 'options.refPath', null) : null;
|
|
|
|
if (Array.isArray(schema)) {
|
|
const schemasArray = schema;
|
|
for (const _schema of schemasArray) {
|
|
let _modelNames;
|
|
let res;
|
|
try {
|
|
res = _getModelNames(doc, _schema);
|
|
_modelNames = res.modelNames;
|
|
isRefPath = isRefPath || res.isRefPath;
|
|
normalizedRefPath = normalizeRefPath(normalizedRefPath, doc, options.path) ||
|
|
res.refPath;
|
|
} catch (error) {
|
|
return error;
|
|
}
|
|
|
|
if (isRefPath && !res.isRefPath) {
|
|
continue;
|
|
}
|
|
if (!_modelNames) {
|
|
continue;
|
|
}
|
|
modelNames = modelNames || [];
|
|
for (const modelName of _modelNames) {
|
|
if (modelNames.indexOf(modelName) === -1) {
|
|
modelNames.push(modelName);
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
try {
|
|
const res = _getModelNames(doc, schema);
|
|
modelNames = res.modelNames;
|
|
isRefPath = res.isRefPath;
|
|
normalizedRefPath = res.refPath;
|
|
} catch (error) {
|
|
return error;
|
|
}
|
|
|
|
if (!modelNames) {
|
|
continue;
|
|
}
|
|
}
|
|
|
|
const _virtualRes = getVirtual(model.schema, options.path);
|
|
const virtual = _virtualRes == null ? null : _virtualRes.virtual;
|
|
|
|
let localField;
|
|
let count = false;
|
|
if (virtual && virtual.options) {
|
|
const virtualPrefix = _virtualRes.nestedSchemaPath ?
|
|
_virtualRes.nestedSchemaPath + '.' : '';
|
|
if (typeof virtual.options.localField === 'function') {
|
|
localField = virtualPrefix + virtual.options.localField.call(doc, doc);
|
|
} else {
|
|
localField = virtualPrefix + virtual.options.localField;
|
|
}
|
|
count = virtual.options.count;
|
|
|
|
if (virtual.options.skip != null && !options.hasOwnProperty('skip')) {
|
|
options.skip = virtual.options.skip;
|
|
}
|
|
if (virtual.options.limit != null && !options.hasOwnProperty('limit')) {
|
|
options.limit = virtual.options.limit;
|
|
}
|
|
if (virtual.options.perDocumentLimit != null && !options.hasOwnProperty('perDocumentLimit')) {
|
|
options.perDocumentLimit = virtual.options.perDocumentLimit;
|
|
}
|
|
} else {
|
|
localField = options.path;
|
|
}
|
|
let foreignField = virtual && virtual.options ?
|
|
virtual.options.foreignField :
|
|
'_id';
|
|
|
|
// `justOne = null` means we don't know from the schema whether the end
|
|
// result should be an array or a single doc. This can result from
|
|
// populating a POJO using `Model.populate()`
|
|
let justOne = null;
|
|
if ('justOne' in options && options.justOne !== void 0) {
|
|
justOne = options.justOne;
|
|
} else if (virtual && virtual.options && virtual.options.refPath) {
|
|
const normalizedRefPath =
|
|
normalizeRefPath(virtual.options.refPath, doc, options.path);
|
|
justOne = !!virtual.options.justOne;
|
|
isVirtual = true;
|
|
const refValue = utils.getValue(normalizedRefPath, doc);
|
|
modelNames = Array.isArray(refValue) ? refValue : [refValue];
|
|
} else if (virtual && virtual.options && virtual.options.ref) {
|
|
let normalizedRef;
|
|
if (typeof virtual.options.ref === 'function') {
|
|
normalizedRef = virtual.options.ref.call(doc, doc);
|
|
} else {
|
|
normalizedRef = virtual.options.ref;
|
|
}
|
|
justOne = !!virtual.options.justOne;
|
|
isVirtual = true;
|
|
if (!modelNames) {
|
|
modelNames = [].concat(normalizedRef);
|
|
}
|
|
} else if (schema && !schema[schemaMixedSymbol]) {
|
|
// Skip Mixed types because we explicitly don't do casting on those.
|
|
justOne = !schema.$isMongooseArray;
|
|
}
|
|
|
|
if (!modelNames) {
|
|
continue;
|
|
}
|
|
|
|
if (virtual && (!localField || !foreignField)) {
|
|
return new MongooseError('If you are populating a virtual, you must set the ' +
|
|
'localField and foreignField options');
|
|
}
|
|
|
|
options.isVirtual = isVirtual;
|
|
options.virtual = virtual;
|
|
if (typeof localField === 'function') {
|
|
localField = localField.call(doc, doc);
|
|
}
|
|
if (typeof foreignField === 'function') {
|
|
foreignField = foreignField.call(doc);
|
|
}
|
|
|
|
const localFieldPathType = modelSchema._getPathType(localField);
|
|
const localFieldPath = localFieldPathType === 'real' ? modelSchema.path(localField) : localFieldPathType.schema;
|
|
const localFieldGetters = localFieldPath && localFieldPath.getters ? localFieldPath.getters : [];
|
|
let ret;
|
|
|
|
const _populateOptions = get(options, 'options', {});
|
|
|
|
const getters = 'getters' in _populateOptions ?
|
|
_populateOptions.getters :
|
|
options.isVirtual && get(virtual, 'options.getters', false);
|
|
if (localFieldGetters.length > 0 && getters) {
|
|
const hydratedDoc = (doc.$__ != null) ? doc : model.hydrate(doc);
|
|
const localFieldValue = utils.getValue(localField, doc);
|
|
if (Array.isArray(localFieldValue)) {
|
|
const localFieldHydratedValue = utils.getValue(localField.split('.').slice(0, -1), hydratedDoc);
|
|
ret = localFieldValue.map((localFieldArrVal, localFieldArrIndex) =>
|
|
localFieldPath.applyGetters(localFieldArrVal, localFieldHydratedValue[localFieldArrIndex]));
|
|
} else {
|
|
ret = localFieldPath.applyGetters(localFieldValue, hydratedDoc);
|
|
}
|
|
} else {
|
|
ret = convertTo_id(utils.getValue(localField, doc), schema);
|
|
}
|
|
|
|
const id = String(utils.getValue(foreignField, doc));
|
|
options._docs[id] = Array.isArray(ret) ? ret.slice() : ret;
|
|
|
|
let match = get(options, 'match', null) ||
|
|
get(currentOptions, 'match', null) ||
|
|
get(options, 'virtual.options.match', null) ||
|
|
get(options, 'virtual.options.options.match', null);
|
|
|
|
const hasMatchFunction = typeof match === 'function';
|
|
if (hasMatchFunction) {
|
|
match = match.call(doc, doc);
|
|
}
|
|
|
|
// Re: gh-8452. Embedded discriminators may not have `refPath`, so clear
|
|
// out embedded discriminator docs that don't have a `refPath` on the
|
|
// populated path.
|
|
if (isRefPath && normalizedRefPath != null) {
|
|
const pieces = normalizedRefPath.split('.');
|
|
let cur = '';
|
|
for (const piece of pieces) {
|
|
cur = cur + (cur.length === 0 ? '' : '.') + piece;
|
|
const schematype = modelSchema.path(cur);
|
|
if (schematype != null &&
|
|
schematype.$isMongooseArray &&
|
|
schematype.caster.discriminators != null &&
|
|
Object.keys(schematype.caster.discriminators).length > 0) {
|
|
const subdocs = utils.getValue(cur, doc);
|
|
const remnant = options.path.substr(cur.length + 1);
|
|
const discriminatorKey = schematype.caster.schema.options.discriminatorKey;
|
|
modelNames = [];
|
|
for (const subdoc of subdocs) {
|
|
const discriminatorName = utils.getValue(discriminatorKey, subdoc);
|
|
const discriminator = schematype.caster.discriminators[discriminatorName];
|
|
const discriminatorSchema = discriminator && discriminator.schema;
|
|
if (discriminatorSchema == null) {
|
|
continue;
|
|
}
|
|
const _path = discriminatorSchema.path(remnant);
|
|
if (_path == null || _path.options.refPath == null) {
|
|
const docValue = utils.getValue(localField.substr(cur.length + 1), subdoc);
|
|
ret = ret.map(v => v === docValue ? SkipPopulateValue(v) : v);
|
|
continue;
|
|
}
|
|
const modelName = utils.getValue(pieces.slice(i + 1).join('.'), subdoc);
|
|
modelNames.push(modelName);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
let k = modelNames.length;
|
|
while (k--) {
|
|
modelName = modelNames[k];
|
|
if (modelName == null) {
|
|
continue;
|
|
}
|
|
|
|
// `PopulateOptions#connection`: if the model is passed as a string, the
|
|
// connection matters because different connections have different models.
|
|
const connection = options.connection != null ? options.connection : model.db;
|
|
|
|
try {
|
|
Model = originalModel && originalModel[modelSymbol] ?
|
|
originalModel :
|
|
modelName[modelSymbol] ? modelName : connection.model(modelName);
|
|
} catch (error) {
|
|
return error;
|
|
}
|
|
|
|
let ids = ret;
|
|
const flat = Array.isArray(ret) ? utils.array.flatten(ret) : [];
|
|
|
|
if (isRefPath && Array.isArray(ret) && flat.length === modelNames.length) {
|
|
ids = flat.filter((val, i) => modelNames[i] === modelName);
|
|
}
|
|
|
|
if (!available[modelName] || currentOptions.perDocumentLimit != null) {
|
|
currentOptions = {
|
|
model: Model
|
|
};
|
|
|
|
if (isVirtual && get(virtual, 'options.options')) {
|
|
currentOptions.options = utils.clone(virtual.options.options);
|
|
}
|
|
utils.merge(currentOptions, options);
|
|
|
|
// Used internally for checking what model was used to populate this
|
|
// path.
|
|
options[populateModelSymbol] = Model;
|
|
|
|
available[modelName] = {
|
|
model: Model,
|
|
options: currentOptions,
|
|
match: hasMatchFunction ? [match] : match,
|
|
docs: [doc],
|
|
ids: [ids],
|
|
allIds: [ret],
|
|
localField: new Set([localField]),
|
|
foreignField: new Set([foreignField]),
|
|
justOne: justOne,
|
|
isVirtual: isVirtual,
|
|
virtual: virtual,
|
|
count: count,
|
|
[populateModelSymbol]: Model
|
|
};
|
|
map.push(available[modelName]);
|
|
} else {
|
|
available[modelName].localField.add(localField);
|
|
available[modelName].foreignField.add(foreignField);
|
|
available[modelName].docs.push(doc);
|
|
available[modelName].ids.push(ids);
|
|
available[modelName].allIds.push(ret);
|
|
if (hasMatchFunction) {
|
|
available[modelName].match.push(match);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
return map;
|
|
|
|
function _getModelNames(doc, schema) {
|
|
let modelNames;
|
|
let discriminatorKey;
|
|
let isRefPath = false;
|
|
|
|
if (schema && schema.caster) {
|
|
schema = schema.caster;
|
|
}
|
|
if (schema && schema.$isSchemaMap) {
|
|
schema = schema.$__schemaType;
|
|
}
|
|
|
|
if (!schema && model.discriminators) {
|
|
discriminatorKey = model.schema.discriminatorMapping.key;
|
|
}
|
|
|
|
refPath = schema && schema.options && schema.options.refPath;
|
|
|
|
const normalizedRefPath = normalizeRefPath(refPath, doc, options.path);
|
|
|
|
if (modelNameFromQuery) {
|
|
modelNames = [modelNameFromQuery]; // query options
|
|
} else if (normalizedRefPath) {
|
|
if (options._queryProjection != null && isPathExcluded(options._queryProjection, normalizedRefPath)) {
|
|
throw new MongooseError('refPath `' + normalizedRefPath +
|
|
'` must not be excluded in projection, got ' +
|
|
util.inspect(options._queryProjection));
|
|
}
|
|
|
|
if (modelSchema.virtuals.hasOwnProperty(normalizedRefPath) && doc.$__ == null) {
|
|
modelNames = [modelSchema.virtuals[normalizedRefPath].applyGetters(void 0, doc)];
|
|
} else {
|
|
modelNames = utils.getValue(normalizedRefPath, doc);
|
|
}
|
|
|
|
if (Array.isArray(modelNames)) {
|
|
modelNames = utils.array.flatten(modelNames);
|
|
}
|
|
|
|
isRefPath = true;
|
|
} else {
|
|
let modelForCurrentDoc = model;
|
|
let schemaForCurrentDoc;
|
|
|
|
if (!schema && discriminatorKey) {
|
|
modelForFindSchema = utils.getValue(discriminatorKey, doc);
|
|
if (modelForFindSchema) {
|
|
// `modelForFindSchema` is the discriminator value, so we might need
|
|
// find the discriminated model name
|
|
const discriminatorModel = getDiscriminatorByValue(model, modelForFindSchema);
|
|
if (discriminatorModel != null) {
|
|
modelForCurrentDoc = discriminatorModel;
|
|
} else {
|
|
try {
|
|
modelForCurrentDoc = model.db.model(modelForFindSchema);
|
|
} catch (error) {
|
|
return error;
|
|
}
|
|
}
|
|
|
|
schemaForCurrentDoc = modelForCurrentDoc.schema._getSchema(options.path);
|
|
|
|
if (schemaForCurrentDoc && schemaForCurrentDoc.caster) {
|
|
schemaForCurrentDoc = schemaForCurrentDoc.caster;
|
|
}
|
|
}
|
|
} else {
|
|
schemaForCurrentDoc = schema;
|
|
}
|
|
const _virtualRes = getVirtual(modelForCurrentDoc.schema, options.path);
|
|
const virtual = _virtualRes == null ? null : _virtualRes.virtual;
|
|
|
|
let ref;
|
|
let refPath;
|
|
|
|
if ((ref = get(schemaForCurrentDoc, 'options.ref')) != null) {
|
|
ref = handleRefFunction(ref, doc);
|
|
modelNames = [ref];
|
|
} else if ((ref = get(virtual, 'options.ref')) != null) {
|
|
ref = handleRefFunction(ref, doc);
|
|
|
|
// When referencing nested arrays, the ref should be an Array
|
|
// of modelNames.
|
|
if (Array.isArray(ref)) {
|
|
modelNames = ref;
|
|
} else {
|
|
modelNames = [ref];
|
|
}
|
|
|
|
isVirtual = true;
|
|
} else if ((refPath = get(schemaForCurrentDoc, 'options.refPath')) != null) {
|
|
isRefPath = true;
|
|
refPath = normalizeRefPath(refPath, doc, options.path);
|
|
modelNames = utils.getValue(refPath, doc);
|
|
if (Array.isArray(modelNames)) {
|
|
modelNames = utils.array.flatten(modelNames);
|
|
}
|
|
} else {
|
|
// We may have a discriminator, in which case we don't want to
|
|
// populate using the base model by default
|
|
modelNames = discriminatorKey ? null : [model.modelName];
|
|
}
|
|
}
|
|
|
|
if (!modelNames) {
|
|
return { modelNames: modelNames, isRefPath: isRefPath, refPath: normalizedRefPath };
|
|
}
|
|
|
|
if (!Array.isArray(modelNames)) {
|
|
modelNames = [modelNames];
|
|
}
|
|
|
|
return { modelNames: modelNames, isRefPath: isRefPath, refPath: normalizedRefPath };
|
|
}
|
|
};
|
|
|
|
/*!
|
|
* ignore
|
|
*/
|
|
|
|
function handleRefFunction(ref, doc) {
|
|
if (typeof ref === 'function' && !ref[modelSymbol]) {
|
|
return ref.call(doc, doc);
|
|
}
|
|
return ref;
|
|
}
|
|
|
|
/*!
|
|
* Retrieve the _id of `val` if a Document or Array of Documents.
|
|
*
|
|
* @param {Array|Document|Any} val
|
|
* @return {Array|Document|Any}
|
|
*/
|
|
|
|
function convertTo_id(val, schema) {
|
|
if (val != null && val.$__ != null) return val._id;
|
|
|
|
if (Array.isArray(val)) {
|
|
for (let i = 0; i < val.length; ++i) {
|
|
if (val[i] != null && val[i].$__ != null) {
|
|
val[i] = val[i]._id;
|
|
}
|
|
}
|
|
if (val.isMongooseArray && val.$schema()) {
|
|
return val.$schema().cast(val, val.$parent());
|
|
}
|
|
|
|
return [].concat(val);
|
|
}
|
|
|
|
// `populate('map')` may be an object if populating on a doc that hasn't
|
|
// been hydrated yet
|
|
if (val != null &&
|
|
val.constructor.name === 'Object' &&
|
|
// The intent here is we should only flatten the object if we expect
|
|
// to get a Map in the end. Avoid doing this for mixed types.
|
|
(schema == null || schema[schemaMixedSymbol] == null)) {
|
|
const ret = [];
|
|
for (const key of Object.keys(val)) {
|
|
ret.push(val[key]);
|
|
}
|
|
return ret;
|
|
}
|
|
// If doc has already been hydrated, e.g. `doc.populate('map').execPopulate()`
|
|
// then `val` will already be a map
|
|
if (val instanceof Map) {
|
|
return Array.from(val.values());
|
|
}
|
|
|
|
return val;
|
|
}
|