Update codec for resolve decoding error between mysql bit(1) and `s…

[ikhoon]

Fixes Mysql BIT(1) to scala Boolean decoding Error.

Problem

Entity

case class Items(id:Int, brandId: Int, isValid: Boolean)

Table

CREATE TABLE items(`id` int(11),  `brand_id` int(11), `is_valid` bit(1) DEFAULT b'1');

Error

java.lang.IllegalStateException: Value 'RawValue(16,63,true,[B@64697949)' can't be decoded to 'boolean'

    at io.getquill.util.Messages$.fail(Messages.scala:8)
    at io.getquill.sources.finagle.mysql.FinagleMysqlDecoders$$anon$1$$anonfun$apply$1.apply(FinagleMysqlDecoders.scala:34)
    at io.getquill.sources.finagle.mysql.FinagleMysqlDecoders$$anon$1$$anonfun$apply$1.apply(FinagleMysqlDecoders.scala:34)
    at scala.Option.getOrElse(Option.scala:121)
    at io.getquill.sources.finagle.mysql.FinagleMysqlDecoders$$anon$1.apply(FinagleMysqlDecoders.scala:34)
    at io.getquill.sources.finagle.mysql.FinagleMysqlDecoders$$anon$1.apply(FinagleMysqlDecoders.scala:31)

Custom Decoder not working on predefined types

implicit val bitToBooleanDecoder = db.decoder[Boolean] {
  case ByteValue(byte) => byte == (1: Byte)
  case v: RawValue => v.bytes.head == (1 : Byte)
}
val q = quote { (id: Int) =>
  query[Items].filter(i => i.id == id).take(1)
}
db.run(q)(id).map(_.headOption)
// Error:(29, 11) Source doesn't know how to decode 'i.isValid: Boolean'
//    db.run(q)(id).map(_.headOption)
//          ^

Solution

Add RawValue into a Decoder[Boolean]

Notes

Checklist

• Unit test all changes
• Update README.md if applicable
• Add [WIP] to the pull request title if it's work in progress
• Squash commits that aren't meaningful changes
• Run sbt scalariformFormat test:scalariformFormat to make sure that the source files are formatted

@getquill/maintainers

[fwbrasil]

@ikhoon Thank you for the contribution! Could you check why the ci test is failing? https://travis-ci.org/getquill/quill/builds/119487063#L5926

If you need help to setup your local environment, CONTRIBUTION.md has some information.

[ikhoon]

@fwbrasil Sorry for the ci test failing.
I should have checked CONTRIBUTION.md.
After setting local development env & fix the issue.
Thanks!

[fwbrasil]

@ikhoon no worries, thanks again for the contribution! 👍 LGTM

[jilen]

👍

[karellen-kim]

Thanks for the approval!! 😄