Java code for Bulk Import of Fixed Income ISINs to get RICs in TRTH v2 REST API

Beera.Rajesh

I have a client who wants to retrieve prices for a list of fixed
income instruments using ISINs in TRTH v2 API using a REST call in Java.As you may
know, ISIN/ CUSIP/ SEDOL mappings for Fixed Income instruments in the TRTH v2
Historical Search is work-in-progress (targeted to be fixed with DSS release
11.2)

Using the TRTH v2 GUI as a work around clients can
alternatively import Fixed Income instruments using the DSS work flow as
illustrated below:

• On a spreadsheet (CSV
  file) enter ISN in first column and ISIN’s in second column, for specific
  exchange prices enter exchange code in fourth column leaving third column
  blank.

• Sample: I took ISIN < GB00B16NNR78> and
  retrieving LSE prices hence entered source code <L> in fourth column:

Col 1 Col 2 Col 3 Col 4

ISN GB00B16NNR78 L

But client wants an equivalent call to upload the csv using Java.
Can you provide a JAVA API code that resembles the GUI workaround as suggested
above?

Christiaan Meihsl

@Beera.Rajesh

There is no API call to upload a CSV instruments file, but using the REST API one can create an instrument list, and append instruments to it, including all 4 parameters you list (Identifier type, Identifier, user defined identifier, source).

The java code to create the body of the request to add a single instrument looks like this:

JSONOrderedObject instListJSONObject = new JSONOrderedObject()
   .put("Identifiers", new JSONArray()
      .put(new JSONObject()
         .put("Identifier", "GB00B16NNR78")
         .put("IdentifierType", "Isin")
         .put("UserDefinedIdentifier", "Test")
         .put("Source",  "L")))
      .put("KeepDuplicates", false);

I attached a Java sample, which is a small modification of an existing one from our sample set. As that set uses some libraries, you might want to download the full set (including the libraries) from the downloads tab, and add the attached sample to it. That will make it easy to run it.

The attached sample contains a method addInstrumentsToList which implements this, for one instrument (the one from your example). To append all instruments from a long list it would be easy to either call this method inside a loop, or make a loop inside the method to add all instruments in one go.dss2instrumentsclientsource.zip