Re: [aerogear-dev] Pipe spec

On Mon, Apr 22, 2013 at 6:37 PM, Summers Pittman <supittma(a)redhat.com <mailto:supittma@redhat.com>> wrote: On 04/22/2013 12:45 AM, Douglas Campos wrote: > On Fri, Apr 19, 2013 at 08:04:12AM -0400, Summers Pittman wrote: >> So I've gotten a draft of the Pipe document up. >> >> https://github.com/aerogear/aerogear.org/blob/pipe_spec/docs/specs/aeroge... >> >> Some things I would like to call out and discuss include >> >> 1 ) Pipe implementations should be thread safe. Specifically calls to >> read, remove, and save should not change the internal state of a Pipe >> object. > +1 > >> 2 ) Pipeline.get is not guaranteed to always return the same instance >> of a Pipe. This is something that came up with Android. Loaders are >> 1:1 on the Activity or Fragment which references the Loader. >> Therefore if a Pipe is reused between multiple Activities each one is >> proxied in a different Loader. > Why should we spec this? People counting on getting the same instance on > year 2013... I just feel like it is one of those things that if we don't say up front people may rely on it. > >> 3 ) A Pipe may proxy or delegate to a handler and this handler can be >> exposed as a property. This is an Androidism as well. I think it can >> probably be dropped from the spec but I wanted to see what other >> people thought about it. > +1 on dropping, this just adds complexity, and complex specs == boring > read Will do. >> Some things which we may need to flesh out to make the spec more >> complete are >> >> 1 ) Authorization and Authentication. This is probably another >> document > We can probably just spec the Authentication/Authorization SPIs (very > thin API surface) So a separate doc then? > >> 2 ) A callback spec/definition. I am not sure whether this is a >> separate document or not. Either way it should be short and sweet. > Wdym? Could you elaborate more? We need to put down in writing Callback.onSuccess(result) and Callback.onFailure(cause) because it is used everywhere. > >> 3 ) Platform implementation docs. A document with the code >> examples/comparisons and notes where they may diverge from each other. >> For instance in Android Callback is passed instances of the resource a >> pipe represents, but in iOS and Javascript the callback is passed a >> map of values. I didn't explicitly define this behavior in the spec. > Isn't having the parallel usage examples enough? (kinda like we did on > the paging spec) Pretty much, I was just wondering if people were interested in having a Map behavior as a standard, leaving it to the implementation, or doing something else (like returning Headers and Body information) I agree, coming from java, the map thing _is_ weird :) but that's what a lot of folks do, in iOS land. I guess... we could spec this - but also keeping it abstract, not really sure, to be honest

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