File to push OHLC data to data array (working with ugly work around : separate schema for read)

mongoose_ohlc_dummy_1.js

var  mongoose = require('mongoose');

var ohlcSchema = mongoose.Schema(
    {
        _id:{type: Number, unique: true},
        data: [Number]
    },
    {
        collection:'ohlc-min-DB'
    }
);
var ohlcSchemaRead = mongoose.Schema(
    {
        _id:{type: Number, unique: true},
        data: [[Number]]
    },
    {
        collection:'ohlc-min-DB'
    }
);

var ohlcModel = mongoose.model('ohlcModel', ohlcSchema);
var ohlcModelRead = mongoose.model('ohlcModelRead', ohlcSchemaRead);



mongoose.connect(
    'mongodb://localhost:27017/test',
    {
        useMongoClient:true
    }
);   
var myDBConnection = mongoose.connection;



//open the DB
myDBConnection.once(
    'open',
    function()
    {
        //update the record with new data   - THIS IS WORKING 
        ohlcModel.findOneAndUpdate(
            { _id:1},
            { $push: { 'data': [1234,23,2352,123,523,23523] } },
            { upsert: true },
            function(error, result)
            { 
                if(error) console.log('Error appending: ' + error); 
                else console.log('Data Successfully appended: ' + result); //VERY FIRST TIME RETURNS NULL THOUGH DATA APPENDED WHICH IS WRONG
            }
        );

        //retrieve entire latest data - THIS IS WORKING BUT UGLY WITH ANOTHER SCHEMA
        ohlcModelRead.findOne({_id:1},        
            function(error, result)
            {
                if(error) console.log('Error retrieving: ' + error);
                else 
                {
                    console.log('Existing Data: ' + result.data); 
                    console.log('Existing Data Rows: ' + result.data.length);
                    console.log('Existing Data Columns: ' + result.data[0].length);
                }
            }
        );
    }
);

//Exit automatically after a while
setTimeout(
    function()
    {
        mongoose.disconnect();
    },
    3000
);

Data updated successfully, cross verified in mongodb client console, but retrieving returns empty value.

Rev 4 and 5, I included another schema for reading, which is working, but this is ugly work around. How do we handle in single schema?

You should only need to use the second ("ohlcSchemaRead") schema, also for updates.

When I use only the second one for both read and write, the data is written like below with each element stored as array inside array of array!
{"data" : [ [ [1321523, 23, 52], [12], [523], [5234] ], [ [1321523], [23], [52], [12], [523], [5234] ] ] }