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'use strict';
const objectIdSymbol = require('../helpers/symbols').objectIdSymbol;
const utils = require('../utils');
/*!
* ignore
*/
module.exports = function shardingPlugin(schema) {
schema.post('init', function() {
storeShard.call(this);
return this;
});
schema.pre('save', function(next) {
applyWhere.call(this);
next();
});
schema.pre('remove', function(next) {
applyWhere.call(this);
next();
});
schema.post('save', function() {
storeShard.call(this);
});
};
/*!
* ignore
*/
function applyWhere() {
let paths;
let len;
if (this.$__.shardval) {
paths = Object.keys(this.$__.shardval);
len = paths.length;
this.$where = this.$where || {};
for (let i = 0; i < len; ++i) {
this.$where[paths[i]] = this.$__.shardval[paths[i]];
}
}
}
/*!
* ignore
*/
module.exports.storeShard = storeShard;
/*!
* ignore
*/
function storeShard() {
// backwards compat
const key = this.schema.options.shardKey || this.schema.options.shardkey;
if (!utils.isPOJO(key)) {
return;
}
const orig = this.$__.shardval = {};
const paths = Object.keys(key);
const len = paths.length;
let val;
for (let i = 0; i < len; ++i) {
val = this.$__getValue(paths[i]);
if (val == null) {
orig[paths[i]] = val;
} else if (utils.isMongooseObject(val)) {
orig[paths[i]] = val.toObject({ depopulate: true, _isNested: true });
} else if (val instanceof Date || val[objectIdSymbol]) {
orig[paths[i]] = val;
} else if (typeof val.valueOf === 'function') {
orig[paths[i]] = val.valueOf();
} else {
orig[paths[i]] = val;
}
}
}
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