• Home
• io.github.zeal18
• zio-mongodb-bson_3
• 0.9.0
• source code
• ConstCodec.scala

×

Project download

Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance.
Project price only 1 $

You can buy this project and download/modify it how often you want.

io.github.zeal18.zio.mongodb.bson.codecs.ConstCodec.scala Maven / Gradle / Ivy

package io.github.zeal18.zio.mongodb.bson.codecs

import org.bson.BsonReader
import org.bson.BsonWriter
import org.bson.codecs.DecoderContext
import org.bson.codecs.EncoderContext

/** Encodes nothing, but always decodes a specified constant value
  *
  * Could be used for complex coproducts when semantically having discriminator is enough,
  * but a codec is required. For example to provide as a part of MixedCoproductCodec(codecByName = ) function
  */
class ConstCodec[A](value: A) extends Codec[A]:
  override def decode(reader: BsonReader, decoderContext: DecoderContext): A              = value
  override def encode(writer: BsonWriter, value: A, encoderContext: EncoderContext): Unit = ()