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From Matteo Interlandi <>
Subject Re: Tang.BindListEntry
Date Fri, 05 Jan 2018 01:51:14 GMT
Hi Gyewon,

thanks for the comments. I have few questions:

1) I actually need order because I am serializing pipelines of operators
one a time and I need to maintain the order in which operators appear. Is
this against Tang design?

2) Mmm my implementation for Avro is basically a copy of how sets are
serialized: they are mapped to strings and enumerated. Where was union


On Thu, Jan 4, 2018 at 5:32 PM, Gyewon Lee <> wrote:

> Hi, Matteo.
> Thanks a lot for your work. I have implemented the APIs for binding List in
> Tang.
> 1) I didn't implement bindListEntry, because unlike Set, the order of
> elements is important in List. As far as I know, any Tang configuration
> should not be affected by the order of its bindings. For that reason, Tang
> binds the whole List, which has the complete order information among
> elements.
> 2) I also implemented Avro serialization part for List in Tang (for Java
> side). However, at that time we didn't merge it because avro "union" schema
> was necessary to support it, which Avro in Nuget (which had lower version)
> didn't support. I think I can check whether C# avro supports it now or not,
> and if it does I can merge my previous work as well as C#-part
> serialization.
> Best,
> Gyewon
> 2018-01-05 10:18 GMT+09:00 Matteo Interlandi <>:
> > Hello,
> >
> > I have implemented a BindListEntry in Tang matching the behavior of
> > BindSetEntry but maintaining order. Do you want to me to fill a PR?
> >
> > In addition I found that the Avro serialized/deserializer of Tang is
> > missing the implementation for configurations added using the BindList
> API.
> > I can also fill a PR for that.
> >
> > Best,
> > Matteo
> >

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