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Description
Description
A union can only contain object types. The class scanner fails to deeply scan a union if it contains another union or interface type.
Expected behavior
A union that contains another union or an interface should be valid.
type Query {
entity: StarWarsEntity
}
interface Character {
name: String
}
type Human implements Character {
name: String
}
type Droid implements Character {
name: String
}
type Planet {
location: String
}
union StarWarsEntity = Character | PlanetActual behavior
The SchemaClassScanner only looks at ObjectTypeDefinitions when a union is scanned. InterfaceTypeDefinitions and UnionTypeDefinitions are ignored.
graphql.kickstart.tools.SchemaClassScannerError: No object type found with name 'Character' for union: UnionTypeDefinition{name='StarWarsEntity'directives=[], memberTypes=[TypeName{name='Character'}, TypeName{name='Planet'}]}
Steps to reproduce the bug
interface StarWarsEntity {}
interface Character extends StarWarsEntity {
String getName();
}
class Human implements Character {
@Override
String getName() {
return null;
}
}
class Droid implements Character {
@Override
String getName() {
return null;
}
}
class Planet implements StarWarsEntity {
String location;
}SchemaParser.newParser()
.schemaString("...")
.resolvers(new GraphQLQueryResolver() {
StarWarsEntity getEntity() { return null; }
})
.dictionary(Human.class, Droid.class, Planet.class, Character.class)
.scan();