Reads

A Reads object describes how to decode JSON into a value. Reads objects are typically provided as implicit values. When Reads implicit values are in scope, a program is able to deserialize JSON into values of the right type.

The inverse of a Reads object is a Writes object, which describes how to encode a value into JSON. If you combine a Reads and a Writes then you get a Format.

Self Type: Reads[A]
Annotations: @implicitNotFound( ... )
Source: Reads.scala

Linear Supertypes

AnyRef, Any

Abstract Value Members

abstract def reads(json: JsValue): JsResult[A]

Convert the JsValue into a A

Concrete Value Members

final def !=(arg0: Any): Boolean

Definition Classes
AnyRef → Any
final def ##(): Int

Definition Classes
AnyRef → Any
final def ==(arg0: Any): Boolean

Definition Classes
AnyRef → Any
def andThen[B](rb: Reads[B])(implicit witness: <:<[A, JsValue]): Reads[B]
final def asInstanceOf[T0]: T0

Definition Classes
Any
def clone(): AnyRef

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( ... )
def collect[B](error: JsonValidationError)(f: PartialFunction[A, B]): Reads[B]
def compose[B <: JsValue](rb: Reads[B]): Reads[A]
final def eq(arg0: AnyRef): Boolean

Definition Classes
AnyRef
def equals(arg0: Any): Boolean

Definition Classes
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def filter(error: JsonValidationError)(f: (A) ⇒ Boolean): Reads[A]
def filter(f: (A) ⇒ Boolean): Reads[A]
def filterNot(error: JsonValidationError)(f: (A) ⇒ Boolean): Reads[A]
def filterNot(f: (A) ⇒ Boolean): Reads[A]
def finalize(): Unit

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( classOf[java.lang.Throwable] )
def flatMap[B](f: (A) ⇒ Reads[B]): Reads[B]
final def getClass(): Class[_]

Definition Classes
AnyRef → Any
def hashCode(): Int

Definition Classes
AnyRef → Any
final def isInstanceOf[T0]: Boolean

Definition Classes
Any
def map[B](f: (A) ⇒ B): Reads[B]

Create a new Reads which maps the value produced by this Reads.
Create a new Reads which maps the value produced by this Reads.
B
The type of the value produced by the new Reads.
f
the function applied on the result of the current instance, if successful
final def ne(arg0: AnyRef): Boolean

Definition Classes
AnyRef
final def notify(): Unit

Definition Classes
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final def notifyAll(): Unit

Definition Classes
AnyRef
def orElse(v: Reads[A]): Reads[A]

Creates a new Reads, based on this one, which first executes this Reads' logic then, if this Reads resulted in a JsError, runs the second Reads on the JsValue.
Creates a new Reads, based on this one, which first executes this Reads' logic then, if this Reads resulted in a JsError, runs the second Reads on the JsValue.
v
The Reads to run if this one gets a JsError.
returns
A new Reads with the updated behavior.
final def synchronized[T0](arg0: ⇒ T0): T0

Definition Classes
AnyRef
def toString(): String

Definition Classes
AnyRef → Any
final def wait(): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )
final def wait(arg0: Long, arg1: Int): Unit

Definition Classes
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Annotations
@throws( ... )
final def wait(arg0: Long): Unit

Definition Classes
AnyRef
Annotations
@throws( ... )

Related Docs: object Reads | package json

trait Reads[A] extends AnyRef

Abstract Value Members

abstract def reads(json: JsValue): JsResult[A]

Concrete Value Members

final def !=(arg0: Any): Boolean

final def ##(): Int

final def ==(arg0: Any): Boolean

def andThen[B](rb: Reads[B])(implicit witness: <:<[A, JsValue]): Reads[B]

final def asInstanceOf[T0]: T0

def clone(): AnyRef

def collect[B](error: JsonValidationError)(f: PartialFunction[A, B]): Reads[B]

def compose[B <: JsValue](rb: Reads[B]): Reads[A]

final def eq(arg0: AnyRef): Boolean

def equals(arg0: Any): Boolean

def filter(error: JsonValidationError)(f: (A) ⇒ Boolean): Reads[A]

def filter(f: (A) ⇒ Boolean): Reads[A]

def filterNot(error: JsonValidationError)(f: (A) ⇒ Boolean): Reads[A]

def filterNot(f: (A) ⇒ Boolean): Reads[A]

def finalize(): Unit

def flatMap[B](f: (A) ⇒ Reads[B]): Reads[B]

final def getClass(): Class[_]

def hashCode(): Int

final def isInstanceOf[T0]: Boolean

def map[B](f: (A) ⇒ B): Reads[B]

final def ne(arg0: AnyRef): Boolean

final def notify(): Unit

final def notifyAll(): Unit

def orElse(v: Reads[A]): Reads[A]

final def synchronized[T0](arg0: ⇒ T0): T0

def toString(): String

final def wait(): Unit

final def wait(arg0: Long, arg1: Int): Unit

final def wait(arg0: Long): Unit

Inherited from AnyRef

Inherited from Any

Ungrouped