Scala Pickling is an automatic serialization framework made for Scala.
Scala Pickling is an automatic serialization framework made for Scala. Refer to the project page.
Questions tagged [scala-pickling]
43 questions
2
votes
1 answer
Scala Pickling doesn't seem to work with Point2D.Double
I'm working on a Scala program that uses the Scala Pickling library to serialize and deserialize a Map object that contains a String and a Point2D.Double object from the java.awt.geom package.
Here's the relevant logic:
contents +=
new…
chaorace
- 69
- 1
- 10
2
votes
1 answer
Serializing to disk and deserializing Scala objects using Pickling
Given a stream of homogeneous typed object, how would I go about serializing them to binary, writing them to disk, reading them from disk and then deserializing them using Scala Pickling?
For example:
object PicklingIteratorExample extends App {
…
Mishael Rosenthal
- 619
- 6
- 12
2
votes
1 answer
I've got error for generating pickler/unpickler for a type with type-parameter
I'm trying to use scala-pickling for my project; but I've got a problem with it. let assume that I've got this code:
import scala.pickling._
import scala.pickling.Defaults._
import scala.pickling.json._
sealed trait State
case class…
Reza Same'ei
- 819
- 8
- 22
2
votes
0 answers
Scala pickling with JSON list
I'm trying to "unpickle" JSON structures like the following with Scala-pickling :
{"id":1,"aList":[{"x":1}, {"x":2}]}
Sadly when unpickling with the following code:
import scala.pickling._, scala.pickling.Defaults._, json._
val…
raphael
- 93
- 8
2
votes
1 answer
Cannot Generate unpickler for case class with immutable HashMaps
I've recently come across scala-pickling and I'm trying to see how I can use it in a project, so I've been working through a simple example of a case class with immutable hashmaps. In this example, scala-pickling doesn't generate an unpickler and I…
innospark
- 778
- 1
- 5
- 8
2
votes
0 answers
Scala pickling: Simple custom pickler for my own class?
I am trying to pickle some relatively-simple-structured but large-and-slow-to-create classes in a Scala NLP (natural language processing) app of mine. Because there's lots of data, it needs to pickle and esp. unpickle quickly and without bloat. Java…
Urban Vagabond
- 7,282
- 3
- 28
- 31
2
votes
1 answer
Out of memory error during Scala compilation
I'm using the macro-heavy scala-pickling along with shapeless, and I keep crashing the Scala 2.10.3 compiler with an apparent out of memory error.
The tail of the error message looks like this:
[error] // tree.tpe=tasks.anonfun$218
[error]…
emchristiansen
- 3,550
- 3
- 26
- 40
2
votes
1 answer
Invalid index unpickling where object ref is repeated
I have a case where I'm pickling an object where a ref is repeated inside an object tree. I am getting an invalid index exception when unpickling. Below is a test case.
import scala.pickling._
import json._
object JsonTest extends App {
val obj =…
kevin z
- 75
- 3
1
vote
2 answers
scala-pickling in POJO in scala 2.11 - Is it really simple?
I'm trying to use scala-pickling because at site github it seems so easy and clean. But, I'm failing in use it in this simple REPL:
scala> import scala.pickling._
import scala.pickling._
scala> import scala.pickling.Defaults._
import…
Hélio Moura
- 11
- 4
1
vote
3 answers
remove tpe from json after serialization via scala-pickling
Is there an easy way to serialize to json without "tpe" field inside an object?
I need to serialize case classes to json structures and then, send them over the wire (They won't been deserialized in future). I have a specific api, so.. I don't need…
ppopoff
- 658
- 7
- 17
1
vote
0 answers
Custom unpickler for Enumeration
I have an enumeration that I'm trying to pickle and unpickle with pickling 0.8.0 and scala 2.11:
object CommandType extends Enumeration {
val Push, Pop = Value
}
Pickling cannot do it automagically at the moment. The custom pickler-unpickler…
Yar
- 629
- 6
- 17
1
vote
0 answers
Unpickler for Array of tuple
I am having an issue when I'm trying to unpickle an array of tuples. Here is the use case:
import scala.pickling._
import json._
object JsonTest extends App {
val simplePickled = new Simple(Array(("test", 3))).pickle
val unpickled =…
kevin z
- 75
- 3
1
vote
1 answer
Unpickler for class with tuple
I recently came across this framework and it seems really promising for what I need. I am testing some simple examples out and I'm curious why I can pickle my object but it can't find an unpickler. Here is my example:
import scala.pickling._
import…
kevin z
- 75
- 3
1
vote
2 answers
serialization (pickling / marshalling) in scala?
Are there are any examples, tutorials or docs for serialization / pickling / marshalling objects in Scala? I know of existence of scala.util.Marshal and scala.reflect.internal.pickling, but what is a difference between them? how can I use it? Is…
ts.
- 10,510
- 7
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- 73
0
votes
0 answers
PicklingError: Could not serialize object: when calling exchange rate API into my pyspark dataframe
I am beginner in databricks and pyspark. Currently, I have a pyspark dataframe which contains 3 columns :
Date
amount
Currency
I would like to have the amount columns converted in EUR and calculated with the exchange rate of the day. For that…
Jeg
- 3
- 4