Support recursive custom group definitions in the code generator

Suppose I have the following xml message definition

<message name="FirmPrice" msgtype="UN020" msgcat="app">
<field name="Symbol" required="Y"/>
<field name="Size" required="Y"/>
<group name="NoPriceEntries" required="Y">
<component name="PriceComponent" required="Y"/>
</group>
<group name="NoLegEntries" required="N">
<component name="LegComponent" required="N"/>
</group>
</message>

...

<component name="LegComponent">
<field name="Size" required="Y"/>
<field name="Symbol" required="Y"/>
<group name="NoPriceEntries" required="Y">
<component name="PriceComponent" required="Y"/>
</group>
</component>

The message generation creates a MessageFactory.java which has the following snippet of code in it:

if("UN020".equals(msgType)) {
switch(correspondingFieldID)

{ case liquidity.quickfix.fields.NoPriceEntries.FIELD: return new liquidity.quickfix.messages.FirmPrice.NoPriceEntries(); case liquidity.quickfix.fields.NoLegEntries.FIELD: return new liquidity.quickfix.messages.FirmPrice.NoLegEntries(); case liquidity.quickfix.fields.NoPriceEntries.FIELD: return new liquidity.quickfix.messages.FirmPrice.NoLegEntries.NoPriceEntries(); }

}

This cannot compile, obviously, as it has a duplicate case label. So, it seems like the usage of a field in both, the enclosing message and the nested component is not handled properly by the generated code.

Looks like this is due to "NoPriceEntries" appearing twice: once in the main body of the message, and once in the subcomponent "LegComponent".