java - HashMap implementation of DataSource interface : nextRow() method? -


I would like to apply a DataSource interface (in Java), which, among other things, To get nextRow () from the data, I want to initially implement the data store through the Hashmaps, but it will be different from the underlying data structure, and will provide an interface as mentioned has been done.

Is this sound a good idea? Implementation of next line () implementation hashmap seems a bit messy - I think it is necessary to provide an Iterator on the collection view of the data. And I think I'll also need to provide the resetIterator method?

To provide more details:

  • I'm thinking newRow () method hashmap
  • Implementation of Hashmap data store Hashmap

Any thoughts or comments are highly appreciated!

Interfaces, through ITR, and revealing methods. You can use any of these behind the scenes to do what's in your mind.

On one side note that a hashmap for every data line is too overhead. If you can already fix a set of columns, then to represent each line, the list (probably Arrielist) or even just a simple array will be very cheap to use.


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