Does mapper support mapping collection of enum value?

[ziju feng]

I have a field in my entity class of type Map<SomeEnumClass,String>. I was wondering if it is currently supported by the mapper as annotating the field with @Enumerated does not work.

Thanks,

Ziju

[Alex Popescu]

Ziju, 

I have found this improvement ticket https://datastax-oss.atlassian.net/browse/JAVA-605 that seems to suggest the same feature.

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Alex Popescu
Sen. Product Manager @ DataStax
@al3xandru

[rHermes]

If anyone finds a way to do this, despite it not being supported in a convinient way, please tell me :)

Thanks, rHermes. 

[Kevin Ford]

I made this work with a CustomCodec.  I'll describe via code below

I have an enum EmployeeType, here..

...
public enum EmployeeType {
   manager, peon
 }
...

Create a codec for the enum, this enum is a string enum as you can see

// create EnumNameCodec for any enums
  EnumNameCodec<EmployeeType> employeeTypeNameCodec = new EnumNameCodec<EmployeeType>(EmployeeType.class);

// Register the enumCodec
  cluster = Cluster.builder()
   .addContactPoint(node)
   .withCredentials(username, password)
   .withCodecRegistry(
     new CodecRegistry()
       .register(employeeTypeNameCodec)
       /* additional enum codecs or custom codecs here */ )
    .build();

From there, any mapped classes that contain that enum will use this codec and store them as text.

[Kevin Ford]

Sorry about the above.. this was not a custom codec but an instance of EnumNameCodec, initialized with my Enum.

On Tuesday, February 10, 2015 at 5:10:32 AM UTC-8, Ziju Feng wrote:

[Alexandre Dutra]

Hi,

The annotation @Enumerated has been removed in 3.0, thanks to JAVA-605. It had some limitations, and has been replaced with custom codecs, a much more flexible approach. You can read more about how to map enums in our online documentation.

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Alexandre Dutra

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