Limit type of JsonArray elements to the same type, but not limit types-CodePudding

We have the following JSON:

{ "someName" : [1,2,3,4,5] }

{ "someName" : ["one","two","three"] }

We want to draft a JSON Schema following the OpenAPI 3.x specification. Our constraint: an array element can be integer or string, but all array elements must be the same type. Our schema looks like this:

{
   "type": "array",
   "items": {
     "oneOf": [
        {"type": "string"},
        {"type": "integer"}
        ]                     
     }
}

This does limit the data type inside the array, but still allows to mix strings and integers in one array which we need to avoid.

~~{"someName" : 1, "two", "three", 4}~~

We looked at this question, but it didn't address consistent data type

Is there a way in OpenAPI Schema to enforce uniqueness per array?

CodePudding user response：

You need to bring the oneOf up a level. Also, anyOf is a better choice in this situation. The result is the same in this case, but anyOf is more efficient.

{
   "type": "array",
   "anyOf": [
     { "items": { "type": "string" } },
     { "items": { "type": "integer" } },
   ]                     
}