object BSONReader
BSONReader factories
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- def apply[T](read: (BSONValue) => T): BSONReader[T]
Creates a BSONReader based on the given
read
function.Creates a BSONReader based on the given
read
function.import reactivemongo.api.bson.{ BSONReader, BSONInteger } val intToStrCodeReader = BSONReader[String] { case BSONInteger(0) => "zero" case BSONInteger(1) => "one" case _ => "unknown" } intToStrCodeReader.readTry(BSONInteger(0)) // Success("zero") intToStrCodeReader.readTry(BSONInteger(1)) // Success("one") intToStrCodeReader.readTry(BSONInteger(2)) // Success("unknown")
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- def collect[T](read: PartialFunction[BSONValue, T]): BSONReader[T]
Creates a BSONReader based on the given partial function.
Creates a BSONReader based on the given partial function.
A exceptions.ValueDoesNotMatchException is returned as
Failure
for any BSON value that is not matched by theread
function.import reactivemongo.api.bson.{ BSONReader, BSONInteger } val intToStrCodeReader = BSONReader.collect[String] { case BSONInteger(0) => "zero" case BSONInteger(1) => "one" } intToStrCodeReader.readTry(BSONInteger(0)) // Success("zero") intToStrCodeReader.readTry(BSONInteger(1)) // Success("one") intToStrCodeReader.readTry(BSONInteger(2)) // => Failure(ValueDoesNotMatchException(..)) intToStrCodeReader.readOpt(BSONInteger(3)) // None (as failed)
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- def from[T](read: (BSONValue) => Try[T]): BSONReader[T]
Creates a BSONReader based on the given
read
function.Creates a BSONReader based on the given
read
function.import scala.util.{ Failure, Success } import reactivemongo.api.bson.{ BSONReader, BSONInteger } val intToStrCodeReader = BSONReader.from[String] { case BSONInteger(0) => Success("zero") case BSONInteger(1) => Success("one") case _ => Failure(new IllegalArgumentException()) } intToStrCodeReader.readTry(BSONInteger(0)) // Success("zero") intToStrCodeReader.readTry(BSONInteger(1)) // Success("one") intToStrCodeReader.readTry(BSONInteger(2)) // => Failure(IllegalArgumentException(..)) intToStrCodeReader.readOpt(BSONInteger(3)) // None (as failed)
- read
the safe function to read BSON values as
T
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