Reference

Scalar Types

The framework supports the standard GraphQL scalars and some custom scalars.

GraphQL scalar	Java type	Description
Nullable scalar	Non-null scalar
`BigDecimal`	`BigDecimal`	`BigDecimal`	arbitrary precision decimal
`BigInteger`	`BigInteger`	`BigInteger`	arbitrary precision integer
`Boolean`	`Boolean`	`boolean`	boolean
`Char`	`Character`	`char`	character
`Float`	`Double`	`double`	64-bit IEEE 754 floating point number
`ID`	`String`	`String`	entity identifier
`Instant`	`Instant`	`Instant`	date and time in UTC time zone in format `yyyy-MM-dd’T’HH:mm:ss.SSS’Z'`
`Int`	`Integer`	`int`	32-bit signed integer
`LocalDate`	`LocalDate`	`LocalDate`	date without time zone in format `yyyy-MM-dd`
`LocalDateTime`	`LocalDateTime`	`LocalDateTime`	date and time without time zone in format `yyyy-MM-dd’T’HH:mm:ss`
`LocalTime`	`LocalTime`	`LocalTime`	time without time zone in format `HH:mm:ss`
`Long`	`Long`	`long`	64-bit signed integer
`Short`	`Short`	`short`	16-bit signed integer
`String`	`String`	`String`	string

GraphQL scalar

Java type

Description

Nullable scalar

Non-null scalar

BigDecimal

arbitrary precision decimal

BigInteger

arbitrary precision integer

Boolean

boolean

boolean

Char

Character

char

character

Float

Double

double

64-bit IEEE 754 floating point number

ID

String

entity identifier

Instant

date and time in UTC time zone in format
yyyy-MM-dd’T’HH:mm:ss.SSS’Z'

Int

Integer

int

32-bit signed integer

LocalDate

date without time zone in format yyyy-MM-dd

LocalDateTime

date and time without time zone in format
yyyy-MM-dd’T’HH:mm:ss

LocalTime

time without time zone in format HH:mm:ss

Long

long

64-bit signed integer

Short

short

16-bit signed integer

String

string

The GraphQL list type is translated to Java type java.util.List.