I have an unordered array of JSON items. According to the specification http://tools.ietf.org/html/draft-zyp-json-schema-03#section-5.5 the json schema below will only validate if the objects in the array appear IN THAT ORDER. I don't want to specify an order, just validate the objects within the array, regardless of order or number of objects. From the spec I can't seem to understand how this is done.
"transactions" : {
"type" : "array",
"items" : [
{
"type" : "object",
"properties" : {
"type" : {
"type" : "string",
"enum" : ["BUILD", "REASSIGN"]
}
}
},
{
"type" : "object",
"properties" : {
"type" : {
"type" : "string",
"enum" : ["BREAK"]
}
}
}
]
}
I asked this same question on the JSON schema google group, and it was answered quickly. User fge asked that I post his response here:
Hello,
The current specification is draft v4, not draft v3. More specifically, the validation specification is here:
http://tools.ietf.org/html/draft-fge-json-schema-validation-00
The web site is not up to date, I don't know why... I'll submit a pull request.
With draft v4 you can use this:
{
"type": "array",
"items": {
"oneOf": [
{"first": [ "schema", "here" ] },
{"other": [ "schema": "here" ] }
]
}
}
For instance, this is a schema for an array where items can be either strings or integers (it can be written in a more simple way though):
{
"type": "array",
"items": {
"oneOf": [
{"type": "string"},
{"type": "integer"}
]
}
}
This is the correct answer. My corrected schema now includes:
"transactions" : {
"type" : "array",
"items" : {
"oneOf" : [
{
"type" : "object",
"properties" : {
"type" : {
"type" : "string",
"enum" : ["BUILD", "REASSIGN"]
}
}
},
{
"type" : "object",
"properties" : {
"type" : {
"type" : "string",
"enum" : ["BREAK"]
}
}
}
]
}
}