How to set a default value for enum type @GraphQLArgument

Question

How to set a default value for enum type @GraphQLArgument?

public enum CursorDirection {
    @GraphQLEnumValue(name = "FORWARD")
    FORWARD,
    @GraphQLEnumValue(name = "BACKWARD")
    BACKWARD;
}

Setting to enum name as defaultValue gives below error..

@GraphQLArgument(name = "cursorDirection", description = CURSOR_DIRECTION_DESC, defaultValue = "FORWARD")
CursorDirection cursorDirection

Caused by: com.fasterxml.jackson.core.JsonParseException: Unrecognized token 'FORWARD': was expecting (JSON String, Number, Array, Object or token 'null', 'true' or 'false')
 at [Source: REDACTED (`StreamReadFeature.INCLUDE_SOURCE_IN_LOCATION` disabled); line: 1, column: 8]
    at com.fasterxml.jackson.core.JsonParser._constructError(JsonParser.java:2481) ~[jackson-core-2.16.1.jar:2.16.1]
    at com.fasterxml.jackson.core.base.ParserMinimalBase._reportError(ParserMinimalBase.java:762) ~[jackson-core-2.16.1.jar:2.16.1]
    at com.fasterxml.jackson.core.json.ReaderBasedJsonParser._reportInvalidToken(ReaderBasedJsonParser.java:3042) ~[jackson-core-2.16.1.jar:2.16.1]
    at com.fasterxml.jackson.core.json.ReaderBasedJsonParser._handleOddValue(ReaderBasedJsonParser.java:2085) ~[jackson-core-2.16.1.jar:2.16.1]
    at com.fasterxml.jackson.core.json.ReaderBasedJsonParser.nextToken(ReaderBasedJsonParser.java:812) ~[jackson-core-2.16.1.jar:2.16.1]

Answer 1

Default values have to be valid JSON (I think when the expected type is String (and not enum) the value can be left unquoted, but not certain off the top of my head):

defaultValue = "\"FORWARD\""