我们什么时候使用FIX50sp2和FIXT11.xml？

Question

I am newbie to quickfix, bit confused between quickfix versions FIX50sp2 and FIXT11.

When to use what? Also i got to know to use FIXT11.xml when using FIX 50sp2 version, why not FIX50SP2.xml ?

I am trying to add a group TrdInstrmtLegGrp to my FIXT11.xml, rebuild the jar, earlier I was using quickfixj-messages-fix50sp2-2.0.0 jar but now after doing changes to FIXT11.xml and adding jar quickfixj-messages-fixt11-2.1.0-SNAPSHOT it gives error on TradeCaptureReport :

20180418-04:46:29: java.lang.VerifyError: Bad type on operand stack Exception Details: Location: quickfix/fixt11/TradeCaptureReport$NoLegs.get(Lquickfix/field/LegSide;)Lquickfix/field/LegSide; @2: invokevirtual Reason: Type 'quickfix/field/LegSide' (current frame, stack[1]) is not assignable to 'quickfix/StringField' Current Frame: bci: @2 flags: { } locals: { 'quickfix/fixt11/TradeCaptureReport$NoLegs', 'quickfix/field/LegSide' } stack: { 'quickfix/fixt11/TradeCaptureReport$NoLegs', 'quickfix/field/LegSide' } Bytecode: 0x0000000: 2a2b b600 0457 2bb0

This is how my FIXT11.xml looks as for this group in similar order of my API:

<component name='InstrmtLegGrp'>
  <group name='NoLegs' required='N'>
    <field name='LegSymbol' required='N'/>
    <field name='LegSecurityID' required='N'/>
    <field name='LegSecurityIdSource1' required='N'/>
    <field name='LegSecurityDesc' required='N'/>
    <field name='LegRatioQty' required='N'/>
    <field name='LegSide' required='N'/>
  </group>
</component>

Or do I need to do the required group changes in FIX50sp2.xml?

Answer 1

From FIX 5.0 onwards, Quickfixj introduces the concept of transport dictionary and app dictionary. Transport dictionary will contain all transport related admin messages as Heartbeat/Logon/Logoff etc. whereas Appdictionary will contain the business messages as Quote request, trade capture etc.

You can check the QuickfixJ configuration TransportDataDictionary & AppDataDictionary.( https://www.quickfixj.org/usermanual/1.6.4/usage/configuration.html )