To define aliases in MongoDB shell, you can use below syntax −
Object.defineProperty(this, 'yourFunctionName', { get: function() { yourStatement1, . . return N }, enumerable: true, configurable: true });
Following is the syntax to assign with var −
var anyAliasName=yourFunctionName;
Let us implement the above syntax in order to define an aliases in the MongoDB shell. Here, 'displayMessageDemo' is our function −
> Object.defineProperty(this, 'displayMessageDemo', { ... get: function() { ... return "Hello MongoDB" ... }, ... enumerable: true, ... configurable: true ... });
Query to assign function to var in MongoDB shell −
> var myMessage = displayMessageDemo;
Let us display the value of above aliases −
> myMessage;
This will produce the following output −
Hello MongoDB