Collection columns
Cassandra collections do not allow custom data types. Storing JSON as a string is possible, but it's still a text column as far as Cassandra is concerned.
The type in the below example is always a default C* type.
JSON columns require you to define a toJson and fromJson method, telling phantom how to go from a String to the type you need.
It makes no assumptions as to what library you are using, although we have tested with lift-json and play-json.
Examples on how to use JSON columns can be found in JsonColumnTest.scala
| phantom columns | Cassandra columns |
|---|---|
| ListColumn.<type> | list<type> |
| SetColumn.<type> | set<type> |
| MapColumn.<type, type> | map<type, type> |
| JsonColumn.<type> | text |
| JsonListColumn.<type> | list<text> |
| JsonSetColumn.<type> | set<type> |
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