Controlling the type of a map key value

[Tim Quinn]

I feel as if the solution to this is in front of me using a custom TypeDefinition or something similar but I'm just not seeing it. (I did some customizing of our SnakeYAML parsing some time ago and I'm having to relearn what I have forgotten.)

To process part of the YAML input, I need to translate some input YAML to a `Map<String, MyType>` on the Java object.

Each key in the input YAML can be either an integer or a string. 

When SnakeYAML parses those keys that happen to be integers, it understandably creates an integer.

As a result, in `BaseConstructor.constructMapping2ndStep`, the code fails when it tries to `put` the key and value to the mapping because the key type of the map on `MyType` is `String` but the key value SnakeYAML has created is an `Integer`.

What's the cleanest way for me to make sure that, when processing this property on MyType, the key value is created as a `String`?

Thanks.

[mfried...@gmx.de]

Hello Timm,

maybe your YAML is invalid? If you want to express a numeric as string you must put it into quotes, same goes for booleans like true or false or the nil value.

Best Regards
Mirko Friedenhagen
—
Sent from my mobile

Am 12.01.21 um 01:29 schrieb Tim Quinn

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[Tim Quinn]

Oh, yes. The code in question is reading an OpenAPI document, and the problem was with a test YAML file that was incorrect.

Thanks!