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							62 lines
						
					
					
						
							2.0 KiB
						
					
					
				
			
		
		
	
	
							62 lines
						
					
					
						
							2.0 KiB
						
					
					
				'use strict';
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const OperationBase = require('./operation').OperationBase;
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const applyWriteConcern = require('../utils').applyWriteConcern;
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const checkCollectionName = require('../utils').checkCollectionName;
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const executeDbAdminCommand = require('./db_ops').executeDbAdminCommand;
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const handleCallback = require('../utils').handleCallback;
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const loadCollection = require('../dynamic_loaders').loadCollection;
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const toError = require('../utils').toError;
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class RenameOperation extends OperationBase {
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  constructor(collection, newName, options) {
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    super(options);
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    this.collection = collection;
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    this.newName = newName;
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  }
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  execute(callback) {
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    const coll = this.collection;
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    const newName = this.newName;
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    const options = this.options;
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    let Collection = loadCollection();
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    // Check the collection name
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    checkCollectionName(newName);
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    // Build the command
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    const renameCollection = coll.namespace;
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    const toCollection = coll.s.namespace.withCollection(newName).toString();
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    const dropTarget = typeof options.dropTarget === 'boolean' ? options.dropTarget : false;
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    const cmd = { renameCollection: renameCollection, to: toCollection, dropTarget: dropTarget };
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    // Decorate command with writeConcern if supported
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    applyWriteConcern(cmd, { db: coll.s.db, collection: coll }, options);
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    // Execute against admin
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    executeDbAdminCommand(coll.s.db.admin().s.db, cmd, options, (err, doc) => {
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      if (err) return handleCallback(callback, err, null);
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      // We have an error
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      if (doc.errmsg) return handleCallback(callback, toError(doc), null);
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      try {
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        return handleCallback(
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          callback,
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          null,
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          new Collection(
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            coll.s.db,
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            coll.s.topology,
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            coll.s.namespace.db,
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            newName,
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            coll.s.pkFactory,
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            coll.s.options
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          )
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        );
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      } catch (err) {
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        return handleCallback(callback, toError(err), null);
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      }
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    });
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  }
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}
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module.exports = RenameOperation;
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