AJV validate string against an array of objects - jsonschema

Question

I'm trying to use AJV to check that parent_IDs on child objects are valid IDs on the parent objects.
I can get it to work by validating against a single parent object like this:
const ajv = new Ajv({
$data: true,
allErrors: true,
verbose: true,
});
addFormats(ajv, ["uuid"]);
const schema = {
type: "object",
properties: {
parentObjects: {
type: "array",
items: {
type: "object",
properties: {
id: { type: "string", format: "uuid" },
name: { type: "string" },
},
required: ["id", "name"],
},
},
childObjects: {
type: "array",
items: {
type: "object",
properties: {
id: { type: "string", format: "uuid" },
name: { type: "string" },
parent_id: {
type: "string",
format: "uuid",
const: { $data: "/parentObjects/0/id" },
},
},
required: ["id", "name", "parent_id"],
},
},
},
};
const data = {
parentObjects: [
{
id: "3bc169ba-99c4-448a-8c22-5c2593ccc9ee",
name: "larry",
},
{
id: "d2e92e51-cb56-4451-bf8b-349d82fde107",
name: "curly",
},
{
id: "b99f61f5-f417-4129-9315-ab049d2b618d",
name: "moe",
},
],
childObjects: [
{
id: "bd86603f-fb1d-4075-94f5-619337d43b98",
name: "stan",
parent_id: "3bc169ba-99c4-448a-8c22-5c2593ccc9ee",
},
{
id: "c2b80273-bf2b-4898-a44b-a758a436cb37",
name: "oliver",
parent_id: "e13b7c34-6cb5-4ef4-83a7-7d11c2bd4a1f",
},
],
};
ajv.validate(schema, data);
console.log(ajv.errors);
};
But what I need is to be able to validate against all parent objects, something like:
childObjects: {
type: "array",
items: {
type: "object",
properties: {
id: { type: "string", format: "uuid" },
name: { type: "string" },
parent_id: {
type: "string",
format: "uuid",
enum: { $data: "/parentObjects/*/id" },
},
},
required: ["id", "name", "parent_id"],
},
},
I can't find a way to use a wildcard for the array index "/parentObjects/*/id" or a way to iterate through all of the parentObjects. I could map the parentObject IDs outside of AJV, create another array and validate against that, but it seems like overkill - I feel like I'm missing something simple in AJV which would allow me to do this without generating a new array.