JSON Schema Grammar Not Validating Enums - json

Question

I have defined the following JSON Schema Grammar which has to take "TypeA" type of elements and none other than that.
{
"$schema": "http://json-schema.org/draft-04/schema",
"title": "Schema definition",
"type": "object",
"scname": "string",
"properties": {
"itemInfo": {
"type": "array",
"items": {
"oneOf": [
{
"$ref": "#/definitions/TypeADefinition"
}
]
}
}
},
"required": [
"itemInfo"
],
"definitions": {
"TypeADefinition": {
"type": "object",
"properties": {
"elementOf": {
"types": {
"enum": [
"TypeA"
]
}
},
"elements": {
"items": {
"oneOf": [
{
"$ref": "#/definitions/TypeAElementDefinition"
}
]
},
"type": "array"
}
}
},
"TypeAElementDefinition": {
"type": "object",
"properties": {
"name": {
"type": "string",
"maxLength": 128
}
},
"required": [
"name"
],
"additionalProperties": false
}
}
}
JSON Object 1:
{
"itemInfo": [
{
"elementOf": "TypeA",
"elements": [
{
"name": "John Doe"
}
]
}
]
}
JSON Object 2:
{
"itemInfo": [
{
"elementOf": "TypeB",
"elements": [
{
"name": "John Doe"
}
]
}
]
}
Both of these JSON objects are getting validated by the JSON grammar that I have defined but only the first JSON object should be validated successfully by the grammar the second JSON should not validated as it has elementOf "TypeB".
Is there anything that is missing in my Schema Grammar?
UPDATE
After updating the schema grammar to the following, I am able to invalidate 2nd JSON object.
{
"$schema": "http://json-schema.org/draft-04/schema",
"title": "Schema definition",
"type": "object",
"scname": "string",
"properties": {
"itemInfo": {
"type": "array",
"items": {
"oneOf": [
{
"$ref": "#/definitions/TypeADefinition"
},
{
"$ref": "#/definitions/TypeBDefinition"
}
]
}
}
},
"required": [
"itemInfo"
],
"definitions": {
"TypeADefinition": {
"type": "object",
"properties": {
"elementOf": {
"type": "string",
"enum": [
"TypeA"
]
},
"elements": {
"items": {
"oneOf": [
{
"$ref": "#/definitions/TypeAElementDefinition"
}
]
},
"type": "array"
}
}
},
"TypeAElementDefinition": {
"type": "object",
"properties": {
"name": {
"type": "string",
"maxLength": 128
}
},
"required": [
"name"
],
"additionalProperties": false
},
"TypeBDefinition": {
"type": "object",
"properties": {
"elementOf": {
"type": "string",
"enum": [
"TypeB"
]
},
"elements": {
"items": {
"oneOf": [
{
"$ref": "#/definitions/TypeBElementDefinition"
}
]
},
"type": "array"
}
}
},
"TypeBElementDefinition": {
"type": "object",
"properties": {
"name": {
"type": "string",
"maxLength": 128
}
},
"required": [
"name"
],
"additionalProperties": false
}
}
}
I have also added a definition for 'TypeB' in the grammar which should validate TypeB elements. But it is not happening.
TypeB element is referring to 'TypeADefinition', which should not happen. What is the issue with the grammar?
Error:
Message: Value "TypeB" is not defined in enum.
Schema path: #/definitions/TypeADefinition/properties/elementOf/enum