kotlinlang #tornadofx

I might try using a json file first to read from. I'm going to use this library first https://github.com/cbeust/klaxon and then work with json support standalone

amanda.hinchman-dominguez

01/21/2018, 2:34 AM

I was just following the model example here

amanda.hinchman-dominguez

01/21/2018, 2:44 AM

In the example, an ItemModel is not included, but one is used in the customer class https://github.com/edvin/tornadofx/blob/d8119857cf4e5cf702486a0ed9dcd20c5764c2ce/src/test/kotlin/tornadofx/tests/Customer.kt

amanda.hinchman-dominguez

01/21/2018, 2:44 AM

I'm guessing it is not necessary, but I can assume I would likely use one for your Person/Phone example?

amanda.hinchman-dominguez

01/21/2018, 3:21 AM

Would this be the proper format for loading local JSON files?

val json = loadJsonObject("/JSON/GridInfo.json")

amanda.hinchman-dominguez

01/21/2018, 3:22 AM

GridInfo is located in the JSON folder in the resource file, currently

edvin

01/21/2018, 1:06 PM

@amanda.hinchman-dominguez You need to import

tornadofx.*

👍 1

edvin

01/21/2018, 1:07 PM

@amanda.hinchman-dominguez Sure, you can load json files from the file system (classpath) like that 🙂

👍 1

amanda.hinchman-dominguez

01/21/2018, 2:13 PM

@edvin that's what I thought I did wrong! but it looks like it's in here anyway

amanda.hinchman-dominguez

01/21/2018, 2:43 PM

I suppose it could be that JsonObject is not being used, but it also tells me I don't need to override the updateModel (even though taking away the override makes the yellow go away)

kristofdho

01/21/2018, 2:46 PM

not JsonModel

amanda.hinchman-dominguez

01/21/2018, 2:50 PM

@kristofdho oh wow. Thank YOU

amanda.hinchman-dominguez

01/21/2018, 2:50 PM

Good eyes!

amanda.hinchman-dominguez

01/21/2018, 2:55 PM

What is TornadoFX's true relationship with nullability? For example, why have

Int?

Int

? What are the benefits of ensuring that certain objects cannot be null

edvin

01/21/2018, 3:06 PM

@amanda.hinchman-dominguez Nullability handling is inherited from Kotlin. The reason for it is to force the programmer to handle nullability instead of running into NPE's at runtime. Unfortunately, this type constraint can't always be enforced (platform types).

edvin

01/21/2018, 3:07 PM

@amanda.hinchman-dominguez Also, when implementing

updateModel

- just hit Ctrl+O, type

up

to jump to the function and hit enter. IDEA will autofill the signature for you. You can also invoke this by starting to write

override

👍 1

amanda.hinchman-dominguez

01/21/2018, 3:12 PM

Good to know! I think it's good that there is sort of a median for that. You can't run away from types with JavaFX, but it's still neat that there's an introduction for type-safe programming for css

amanda.hinchman-dominguez

01/21/2018, 3:48 PM

@edvin can you use the

SimpleIntegerProperty

for an object? When I've done so, the update model objects says that it detected an

Int?

when it was expecting an

Int

, and the only examples I've found in both the source code and the documentation is for

String

edvin

01/21/2018, 3:49 PM

@amanda.hinchman-dominguez What do you mean by "use the SimpleIntegerProperty for an object"? Sorry, didn't quite follow 🙂

amanda.hinchman-dominguez

01/21/2018, 3:50 PM

I think this has made it clear for me that I need to better understand the difference between

type?

and

type

amanda.hinchman-dominguez

01/21/2018, 3:52 PM

I suspect that there's an issue with the way I chose to load my json file, but I think you said that what I had should be acceptable. I've also tried wrapping my string in a

loadJsonObject(javaClass.getResource(url))

, but no luck there either.

edvin

01/21/2018, 3:56 PM

@amanda.hinchman-dominguez What the JsonTokenizer is seeing isn't valid json. Can you post the file it loads? This would also typically happen if you call a remote restful endpoint and it returns 500 servfail for example, and HTML instead of JSON. Bottom line is that what was fed to it was not valid json.