Decoder

A Decoder is used to convert an Avro value, such as a GenericRecord, SpecificRecord, GenericFixed, EnumSymbol, or a basic JVM type, into a target Scala type.

For example, a Decoder[String] would convert an input of type Utf8 - which is one of the ways Avro can encode strings - into a plain Java String.

Another example, a decoder for Option[String] would handle inputs of null by emitting a None, and a non-null input by wrapping the decoded value in a Some.

A final example is converting a GenericData.Array or a Java collection type into a Scala collection type.

Self Type: Decoder[T]

Linear Supertypes

Serializable, Serializable, AnyRef, Any

Known Subclasses

BigDecimalDecoder, BooleanDecoder, ByteArrayDecoder, ByteBufferDecoder, ByteDecoder, CNilDecoderValue, DoubleDecoder, FloatDecoder, IntDecoder, LocalTimeDecoder, LongDecoder, ShortDecoder, StringDecoder, UUIDDecoder

Abstract Value Members

abstract def decode(value: Any, schema: Schema)(implicit naming: NamingStrategy = DefaultNamingStrategy): T

Decodes the given value to an instance of T if possible.
Decodes the given value to an instance of T if possible. Otherwise throw an error.
The provided schema is the reader schema.

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
final def asInstanceOf[T0]: T0

Definition Classes
Any
def clone(): AnyRef

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( ... )
final def eq(arg0: AnyRef): Boolean

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

Definition Classes
AnyRef → Any
def finalize(): Unit

Attributes
protected[java.lang]
Definition Classes
AnyRef
Annotations
@throws( classOf[java.lang.Throwable] )
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[U](fn: (T) ⇒ U): Decoder[U]
final def ne(arg0: AnyRef): Boolean

Definition Classes
AnyRef
final def notify(): Unit

Definition Classes
AnyRef
final def notifyAll(): Unit

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

Definition Classes
AnyRef
Annotations
@throws( ... )

Related Docs: object Decoder | package avro4s

trait Decoder[T] extends Serializable

Abstract Value Members

abstract def decode(value: Any, schema: Schema)(implicit naming: NamingStrategy = DefaultNamingStrategy): T

Concrete Value Members

final def !=(arg0: Any): Boolean

final def ##(): Int

final def ==(arg0: Any): Boolean

final def asInstanceOf[T0]: T0

def clone(): AnyRef

final def eq(arg0: AnyRef): Boolean

def equals(arg0: Any): Boolean

def finalize(): Unit

final def getClass(): Class[_]

def hashCode(): Int

final def isInstanceOf[T0]: Boolean

def map[U](fn: (T) ⇒ U): Decoder[U]

final def ne(arg0: AnyRef): Boolean

final def notify(): Unit

final def notifyAll(): Unit

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 Serializable

Inherited from Serializable

Inherited from AnyRef

Inherited from Any

Ungrouped