When trying to publish value 0.00001 it is publishing as 0

nsharma · September 26

Hello team,

I am using EMA ommConsumer where, when trying to publish value 0.00001 it is publishing as 0.

the code snippet I am using is as below:

nestedFieldList.add(EmaFactory.createFieldEntry().realFromDouble(25123, getBid(), 1));

Can anyone please help me out to understand the same.

Gurpreet · September 26

Hello @nsharma

Is the FID 25123 defined as REAL64?

I tried publishing this value and able to see the desired result. PS: Its always better to use the enums like EXPONENT_NEG_13instead of 1.

 fieldList.add(EmaFactory.createFieldEntry().realFromDouble(21, 0.00001, 1));
…

and the result in the consumer -

Service Name: DIRECT_FEED
Item State: Open / Ok / None / 'Refresh Completed'
DSPLY_NAME(3): abc
CURRENCY(15): 840
HST_CLOSE(21): 0.0000100000000
.
.

You can also turn on the OMM logging in the SDK to see the raw messages being sent and received.

nsharma · September 29

Hello @Gurpreet

Thanks for the reply….

FID 25123 is defined as Double.

and yes, I have tried using the EXPONENT_NEG_13 previously it was rounding off the values due to which I tried 1 in that place and tried and it was working as expected but don't know how again it rounded off for 0.00001 to 0.

Thanks!!!!!

Jirapongse · September 29

@nsharma

Real and Double are distinct data types.

If FID 25123 is defined as Double, you need to use EmaFactory.createFieldEntry().doubleValue(int fieldId, double value) method instead.

nsharma · September 29

https://community.developers.refinitiv.com/discussion/comment/128116#Comment_128116

Thanks @Jirapongse have done the changes as you mentioned will test and let you know the outcome.

Hope it will not round-off the any values….

Thanks again for the quick help!!!!!!

nsharma · September 30

@Jirapongse I want to publish the value 0.000001 but not hard coded if I am storing it as double then double is rounding off to 0.0 is there any other method like doubleValue(int feildId, double arg) where we can store the 0.000001 in that variable and publish it to TREP?

Jirapongse · September 30

@nsharma

Is it publishing (Interactive Provider or Non-Interactive Provider) or posting (OMM Consumer)?

nsharma · September 30

https://community.developers.refinitiv.com/discussion/comment/128137#Comment_128137

It is Posting (OMM Consumer)

Jirapongse · September 30

@nsharma

How did you define this 25123 field in a data dictionary file (RDMFieldDictionary)?

According to this Publish Custom Data via Refinitiv Real-Time Distribution System by EMA article, you need to use the negative FIDs for your custom fields.

nsharma · September 30

Hello @Jirapongse I have given as an example but the issue I am getting is in ASK, BID field with id 25, 22 respectively.

Can you please let me know how I can publish 0.000001 other than doubleValue and realFromDouble methods as by storing in double variable it is rounding-off which I don't need.

Jirapongse · September 30

@nsharma

You need to try this one by specifying a hint value.

nestedFieldList.add(EmaFactory.createFieldEntry().realFromDouble(22, 0.000001, OmmReal.MagnitudeType.EXPONENT_NEG_6));

nsharma · September 30

@Jirapongse This is hard coded but I don't want to do hardcode need to store in some variable and pass that variable.

Jirapongse · September 30

@nsharma

I checked the code. If the hint is not specified, it will useOmmReal.MagnitudeType.EXPONENT_0.

	public FieldEntry realFromDouble(int fieldId, double value)

	{

		return realFromDouble(fieldId, value, OmmReal.MagnitudeType.EXPONENT_0);

	}

Due to the structure of REAL, the 0.00001 will be converted to long which is zero.

    boolean     _isBlank;


    int         _hint;


    long        _value;

nsharma · September 30

https://community.developers.refinitiv.com/discussion/comment/128147#Comment_128147

@Jirapongse where to specify the _hint; to not converting to long

Jirapongse · September 30

The structure of real requires long and hint.

nsharma · September 30

How can I achieve this? @Jirapongse

Jirapongse · September 30

@nsharma
Covert a double to a string and count the number of digits after a decimal point. Then, use the number of digits to calculate a hint. For example:

import java.text.DecimalFormatSymbols;

import java.text.DecimalFormat;


public int countDecimalDigits(double number) {

        DecimalFormatSymbols symbols = new DecimalFormatSymbols(Locale.US);

        DecimalFormat df = new DecimalFormat("#.###############", symbols);

        String s = df.format(number);

        int decimalPointIndex = s.indexOf('.');


        if (decimalPointIndex == -1) {

            // No decimal point, so 0 digits after it

            return 0;

        } else {

            // Subtract 1 from the length to account for the decimal point itself

            return s.length() - decimalPointIndex - 1;

        }

    }



…

…

nestedFieldList.add(EmaFactory.createFieldEntry().realFromDouble(22, 0.000001, 14-countDecimalDigits(0.000001)));

nestedFieldList.add(EmaFactory.createFieldEntry().realFromDouble(25, 0.00001, 14-countDecimalDigits(0.00001)));

nsharma · September 30

@Jirapongse again you have hardcoded value I need to pass the value into the variable not the hardcoded value

Jirapongse · September 30

double BidVal = 0.000001;

double AskVal = 0.00001;


nestedFieldList.add(EmaFactory.createFieldEntry().realFromDouble(22, BidVal, 14-countDecimalDigits(BidVal)));

nestedFieldList.add(EmaFactory.createFieldEntry().realFromDouble(25, AskVal, 14-countDecimalDigits(AskVal)));

When trying to publish value 0.00001 it is publishing as 0

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When trying to publish value 0.00001 it is publishing as 0

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