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'use strict';
const OperationBase = require('./operation').OperationBase;
const handleCallback = require('../utils').handleCallback;
let collection;
function loadCollection() {
if (!collection) {
collection = require('../collection');
}
return collection;
}
class CollectionsOperation extends OperationBase {
constructor(db, options) {
super(options);
this.db = db;
}
execute(callback) {
const db = this.db;
let options = this.options;
let Collection = loadCollection();
options = Object.assign({}, options, { nameOnly: true });
// Let's get the collection names
db.listCollections({}, options).toArray((err, documents) => {
if (err != null) return handleCallback(callback, err, null);
// Filter collections removing any illegal ones
documents = documents.filter(doc => {
return doc.name.indexOf('$') === -1;
});
// Return the collection objects
handleCallback(
callback,
null,
documents.map(d => {
return new Collection(
db,
db.s.topology,
db.databaseName,
d.name,
db.s.pkFactory,
db.s.options
);
})
);
});
}
}
module.exports = CollectionsOperation;
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