KdbDict

KdbDict

This object is a replacement for c.Dict. The main features provided by this are are:

• Conversion to and from c.Dict

  • new KdbDict(Dict) to create a new object from a kdb Dict
  • KdbDict.convertToDict for conversion to a Dict ready for serialisation by c.java

• Null detection with add(Object, Object, Class)

  • Java null cannot be serialised by c.java. This add function provides a way of specific which type you are expecting to add. Then at runtime, if the dictionary value is null, the appropriate kdb null is used instead.

• Standard Java collection methods

  • get, add, isEmpty, has are provided to make it easier to interact with the dictionary data

• Value get with cast

  • getAs retrieves the requested value with casting to the expected to type, to make your code easier to read

Example Usage

public Dict buildPlayerDictQuery() {
    return new KdbDict()
                    .add("sym", null, Long.class)
                    .add("gameId", 4544332, Long.class)
                    .add("playerId", 1234, Long.class)
                    .convertToDict();
}