Hi Chris, exactly, that was my point (sorry for writing it not out clearly). We can do it that way the only thing we are "loosing" is to know whether bit was given by the user explicitly or not. I dont know if we need this after parsing is finished anymore.
So we can also do it your way. Julian Am 03.09.18, 10:47 schrieb "Christofer Dutz" <[email protected]>: Hi Julian, had to think a little to get your point ... but think I have ... In my example it's a primitive "short" and in yours it's "Short" as nullable non-primitive-type. I don't technically prefer any of the two options. Physically the bit-offset of any non-bit type is always 0 and not null (as in undefined) as every non-bit value always starts at bit 0 ... so for that reason I would prefer "short" with default 0 over the "Short" nullable version. And this way we don't have to add null-checks in the code. But as I said ... that's a very slight preference for that option. Chris Am 03.09.18, 10:27 schrieb "Julian Feinauer" <[email protected]>: Hi chris, I agree with your S7 field except for one little change. How do we proceed with the (optional) bit offset? I made it "Short" with the contract that null indicates no offset given. Another alternative would be to make it 0 as default or even Optional. I would prefer to have it nullable, what do you think? With the rest I'm fine but as this is part of our internal API now I think we also have more freedom with evolving them as its not visible to users. For all other parts of your proposal +1 from me. Best Julian Am 30.08.18, 10:15 schrieb "Christofer Dutz" <[email protected]>: Hi all, especially @Julian ... could you please have a look at that I did with the S7Field [1]? Also there is a unit-test that should allow adding more statements and testing everything is working ok [2]. Does this match your idea on [3]? Looking at your addresses, I think that I might have not quite got it ... is there always a "D" as first part after the "."? I always read it as "DB" like Data Block ... but seeing DX and SW makes me wonder ... a quick check in my TIA shows me the address of a Boolean field in a Data Block is "%DB1.DBX38.1" ... which one is correct? As we're no longer constructing the objects themselves in the API, I took the liberty to simplify the field objects so we now only have one type for S7. Chris [1] https://github.com/apache/incubator-plc4x/blob/feature/api-redesign-chris-c/plc4j/protocols/s7/src/main/java/org/apache/plc4x/java/s7/model/S7Field.java [2] https://github.com/apache/incubator-plc4x/blob/feature/api-redesign-chris-c/plc4j/protocols/s7/src/test/java/org/apache/plc4x/java/s7/model/S7FieldTests.java [3] https://cwiki.apache.org/confluence/pages/viewpage.action?pageId=89070222 Am 28.08.18, 12:23 schrieb "Christofer Dutz" <[email protected]>: Hi all, I just pushed changes to my API refactoring branch ... so far I only adjusted the API module and added an example using the changed API. To have a look, please go to [1] ... General changes I implemented while working on the refactoring itself. I did notice, that my current proposal "chris-2" did Having to inject the type conversion code would have made it necessary to inject a converter which didn't feel right. So I changed the API to be purely interface based. In order to be able to construct these objects I also added builders for them. I asked a few people here what they think, and most liked the simplicity and didn't have any WTF experiences (Which seems to be a good thing as I did have to explain a lot with the current API) Quick Feedback highly appreciated as I will start implementing DefaultPlcReadRequest & Co (in driver-base ... together with the builders) after that I'll start migrating the drivers. Right now having a look a named example [1] would be a good start ... Second would be a deeper look into the API module [2]. Would be a shame to waste that time and effort if you think the changes suck (or are less than optimal as non-Germans would probably call them ;-) ) . Chris [1] https://github.com/apache/incubator-plc4x/blob/feature/api-redesign-chris-c/examples/hello-plc4x/src/main/java/org/apache/plc4x/java/examples/helloplc4x/HelloPlc4x.java [2] https://github.com/apache/incubator-plc4x/tree/feature/api-redesign-chris-c/plc4j/api Am 27.08.18, 09:57 schrieb "Christofer Dutz" <[email protected]>: Ups ... after reloading .. I just saw Julians Proposal pop up ... haven't looked into that ... Will do that right away. Chris Am 25.08.18, 15:52 schrieb "Christofer Dutz" <[email protected]>: Hi Julian, version 2 should now be quite different ... I started reworking my original proposal and decided to revert that an start a second proposal. My first did address some parts needing cleaning up, but I still wasn't quite satisfied with it. So I did another more radical refactoring. If you reload the second there should be a lot of differences. I just hit "save" a few minutes ago however ... but now I'm quite happy with it. So please have another look at the second proposal. And please, maybe add your own proposal ... my versions are just Brainstorming from my side. My favorite is currently "Chris' Proposal 2" ;-) Chris
