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Over 22 fields in play-json case class. How to deal.
import play.api.libs.json._
import play.api.libs.functional.syntax._
case class AToM(
a: Int,
b: Int,
c: Int,
d: Int,
e: Int,
f: Int,
g: Int,
h: Int,
i: Int,
j: Int,
k: Int,
l: Int,
m: Int
)
case class NToZ(
n: Int,
o: Int,
p: Int,
q: Int,
r: Int,
s: Int,
t: Int,
u: Int,
v: Int,
w: Int,
x: Int,
y: Int,
z: Int
)
case class Large(
a: Int,
b: Int,
c: Int,
d: Int,
e: Int,
f: Int,
g: Int,
h: Int,
i: Int,
j: Int,
k: Int,
l: Int,
m: Int,
n: Int,
o: Int,
p: Int,
q: Int,
r: Int,
s: Int,
t: Int,
u: Int,
v: Int,
w: Int,
x: Int,
y: Int,
z: Int
)
implicit AToMFormat = Json.format[AToM]
implicit NToZFormat = Json.format[NToZ]
implicit val largeReader: Reads[Large] = {
(AToMFormat.reads and NToZReads.reads)( (aToM, nToZ) =>
Large(
aToM.a,
aToM.b,
aToM.c,
aToM.d,
aToM.e,
aToM.f,
aToM.g,
aToM.h,
aToM.i,
aToM.j,
aToM.k,
aToM.l,
aToM.m,
nToZ.n,
nToZ.o,
nToZ.p,
nToZ.q,
nToZ.r,
nToZ.s,
nToZ.t,
nToZ.u,
nToZ.v,
nToZ.w,
nToZ.x,
nToZ.y,
nToZ.z
)
)
}
val s = """{"a": 0,"b": 1,"c": 2,"d": 3,"e": 4,"f": 5,"g": 6,"h": 7,"i": 8,"j": 9,"k": 10,"l": 11,"m": 12,"n": 13,"o": 14,"p": 15,"q": 16,"r": 17,"s": 18,"t": 19,"u": 20,"v": 21,"w": 22,"x": 23,"y": 24,"z": 25}"""
scala> Json.parse(s).as[Large]
//Large(0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25)
import play.api.libs.json._
import play.api.libs.functional.syntax._
case class Large(
a: Int,
b: Int,
c: Int,
d: Int,
e: Int,
f: Int,
g: Int,
h: Int,
i: Int,
j: Int,
k: Int,
l: Int,
m: Int,
n: Int,
o: Int,
p: Int,
q: Int,
r: Int,
s: Int,
t: Int,
u: Int,
v: Int,
w: Int,
x: Int,
y: Int,
z: Int
)
implicit val largeReader: Reads[Large] = {
val aToMReads: Reads[Tuple13[Int, Int, Int,Int,Int,Int,Int,Int,Int,Int,Int,Int,Int]] = {
(JsPath \ "a").read[Int] and
(JsPath \ "b").read[Int] and
(JsPath \ "c").read[Int] and
(JsPath \ "d").read[Int] and
(JsPath \ "e").read[Int] and
(JsPath \ "f").read[Int] and
(JsPath \ "g").read[Int] and
(JsPath \ "h").read[Int] and
(JsPath \ "i").read[Int] and
(JsPath \ "j").read[Int] and
(JsPath \ "k").read[Int] and
(JsPath \ "l").read[Int] and
(JsPath \ "m").read[Int]
}.apply(Tuple13.apply[Int, Int, Int,Int,Int,Int,Int,Int,Int,Int,Int,Int,Int] _)
val nToZReads: Reads[Tuple13[Int, Int, Int,Int,Int,Int,Int,Int,Int,Int,Int,Int,Int]] = {
(JsPath \ "n").read[Int] and
(JsPath \ "o").read[Int] and
(JsPath \ "p").read[Int] and
(JsPath \ "q").read[Int] and
(JsPath \ "r").read[Int] and
(JsPath \ "s").read[Int] and
(JsPath \ "t").read[Int] and
(JsPath \ "u").read[Int] and
(JsPath \ "v").read[Int] and
(JsPath \ "w").read[Int] and
(JsPath \ "x").read[Int] and
(JsPath \ "y").read[Int] and
(JsPath \ "z").read[Int]
}.apply(Tuple13.apply[Int, Int, Int,Int,Int,Int,Int,Int,Int,Int,Int,Int,Int] _)
(aToMReads and nToZReads)( (aToM, nToZ) =>
Large(
aToM._1,
aToM._2,
aToM._3,
aToM._4,
aToM._5,
aToM._6,
aToM._7,
aToM._8,
aToM._9,
aToM._10,
aToM._11,
aToM._12,
aToM._13,
nToZ._1,
nToZ._2,
nToZ._3,
nToZ._4,
nToZ._5,
nToZ._6,
nToZ._7,
nToZ._8,
nToZ._9,
nToZ._10,
nToZ._11,
nToZ._12,
nToZ._13
)
)
}
val s = """{"a": 0,"b": 1,"c": 2,"d": 3,"e": 4,"f": 5,"g": 6,"h": 7,"i": 8,"j": 9,"k": 10,"l": 11,"m": 12,"n": 13,"o": 14,"p": 15,"q": 16,"r": 17,"s": 18,"t": 19,"u": 20,"v": 21,"w": 22,"x": 23,"y": 24,"z": 25}"""
scala> Json.parse(s).as[Large]
//Large(0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25)
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