[This message was posted by Zoltan Vekony of <[email protected]> to the
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Hello,
I'm currently studying the FAST 1.2 extension proposal, and have the following
questions:
1.) The type definition - according to the proposal document - "accepts the
normal type elements without the name attribute". Is it correct, that only the
name attribute is missing in the definition? For example, can I specify the
presence or the id attribute also in the definition section?
e.g. can I define the type for the decimal field
<decimal name="MDEntryPx" id="270" presence="optional" > <delta /> </decimal>
like this?
<define name="MDEntryPxType">
<decimal id="270" presence="optional" > <delta /> </decimal>
</define>
and if I use the type definition MDEntryPxType in the template, what happens
with the presence attribute?
<field name="MDEntryPx" id="270" presence="mandatory"> <type
name="MDEntryPxType"/> </field>
The last occurence of the presence attribute is located according to the
xml-hierarchy in the type definition of MDEntryPxType. Does it mean, that the
mandatory presence attribute assigned directly to the field MDEntryPx will be
ignored?
2.) Another question: Is the following usage of the field definition correct
(using the same type definition with different fast operator)?
<define name="milliseconds">
<timestamp unit="millisecond" epoch="today"/>
</define>
in template t1:
<field name="timestamp" presence="mandatory"> <type name="milliseconds">
<delta/> </type> </field>
in template t2:
<field name="timestamp" presence="mandatory"> <type name="milliseconds">
<copy/> </type> </field>
in template t3:
<field name="timestamp" presence="optional"> <type name="milliseconds"/>
</field>
Thanks,
Zoltan Vekony
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