propertyOrdering is missing from Schema

[orsinium]

Description of the bug:

According to the docs, the JSON schema supports propertyOrdering but it's not present in the Schema object.

https://ai.google.dev/gemini-api/docs/structured-output?lang=go#property-ordering

Actual vs expected behavior:

No response

Any other information you'd like to share?

No response

[orsinium]

I tried to edit Schema in code but it says that the file is autogenerated and I'm not sure what is the source.

[Annhiluc]

Thanks for bringing this issue up. Do you have a reproducible code snippet that can be used for further triaging?

[orsinium]

genai.Schema{PropertyOrdering: []string{"a", "b"}} 👀

[sontanon]

Same here, it seems to fill-in the fields in alphabetical order as specified by the docs. This leads to poor behavior for this simple toy example since the "punchline" is filled before the "setup".

model.ResponseMIMEType = "application/json"
model.ResponseSchema = &genai.Schema{
	Type:        genai.TypeObject,
	Description: "Jokes are formatted as JSON objects with setup and punchline fields.",
	Nullable:    false,
	Required:    []string{"setup", "punchline"},
	Properties: map[string]*genai.Schema{
		"setup": &genai.Schema{
			Type:        genai.TypeString,
			Description: "The setup of the joke.",
			Nullable:    false,
		},
		"punchline": &genai.Schema{
			Type:        genai.TypeString,
			Description: "The punchline of the joke.",
			Nullable:    false,
		},
	},
}

resp, err := model.GenerateContent(ctx, genai.Text(`Tell me a joke about tariffs.`))

I am able to force the order by renaming the fields to a_setup and b_punchline.

Also, by looking at the struct in genai.Schema, I am also confused on other schema properties like anyOf, maxItems, minItems, minimum, maximum as referenced by the Schema documentation here: https://ai.google.dev/api/caching#Schema

[sontanon]

This is solved in this SDK: https://github.com/googleapis/go-genai/tree/v0.7.0
I am not sure why there are two competing go SDKs for Google GenAI...

[orsinium]

We've switched to go-genai.