How to serialize bloom filter from Google Guava?

Question

I'm trying to use Google Guava's Bloom filter and serialize it using Scala. Creating it was easy:

import com.google.common.hash.{BloomFilter,Funnels}
val b = BloomFilter.create(Funnels.unencodedCharsFunnel,5e8.toLong,1e-6)

But I don't understand how to serialize it.. Was expecting a BloomFilter.serialize method, but no.. What am I missing?

The poit is trying to turn the Bloom filter to an Array[Byte]..

Answer 1

Did you try this:

import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import com.google.common.hash.{BloomFilter,Funnels} 

val b = BloomFilter.create(Funnels.unencodedCharsFunnel,5e8.toLong,1e-6)

val stream = new ObjectOutputStream(new FileOutputStream(
          "/path/to/file/file.obj"))

stream.writeObject(b)