qzio

Value Members

1. object ImplicitSyntax

   

   Use to provide run(myQuery) calls with a context implicitly saving the need to provide things multiple times.

   Use to provide run(myQuery) calls with a context implicitly saving the need to provide things multiple times. For example in JDBC:

   case class MyQueryService(ds: DataSource) {
     import Ctx._
     implicit val env = Implicit(Has(ds))
   
     val joes = Ctx.run(query[Person].filter(p => p.name == "Joe")).implicitly
     val jills = Ctx.run(query[Person].filter(p => p.name == "Jill")).implicitly
     val alexes = Ctx.run(query[Person].filter(p => p.name == "Alex")).implicitly
   }

   Normally you would have to do a separate provide for each clause:

   val joes = Ctx.run(query[Person].filter(p => p.name == "Joe")).provide(Has(ds))
   val jills = Ctx.run(query[Person].filter(p => p.name == "Jill")).provide(Has(ds))
   val alexes = Ctx.run(query[Person].filter(p => p.name == "Alex")).provide(Has(ds))

   For other contexts e.g. Cassandra the functionality is identical.

   case class MyQueryService(cs: CassandraZioSession) {
     import Ctx._
     implicit val env = Implicit(Has(cs))
   
     def joes = Ctx.run { query[Person].filter(p => p.name == "Joe") }.implicitly
     def jills = Ctx.run { query[Person].filter(p => p.name == "Jill") }.implicitly
     def alexes = Ctx.run { query[Person].filter(p => p.name == "Alex") }.implicitly
   }