Store a function on server with Java - MongoDB

Question

I'm using Java driver for MongoDB (mongo-java-driver-2.13.0).
I need to store a function, called my_function, on server. From MongoDB shell I used the following code:

> db.system.js.save( { _id : "function1", value : my_function } );

I need this function to use it in a map-reduce.
How can I store the function using Java driver?

harry-potter · Accepted Answer · 2016-02-14 02:49:34Z

0

I answer all to myself, maybe it can be useful for someone.
You don't need to save your function on server. Suppose I have to use a javascript function foo in map-reduce. You can follow this example:

    String map = "function(){" 
                  + "foo = function(parameters) {...here you have to write foo code...}
                  + ".....now you can use foo function in your map reduce......."

So, just define in map function your function foo and then you will be able to you it inside your map reduce code.

answered Feb 14, 2016 at 2:49

harry-potter

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