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