http://forum.space4j.org/posts/list/1.page JForum - http://www.jforum.net
I have question about the indexed example. It's about this comment:

// this is not good as we are transversing the whole list twice!
// TODO: Create custom iterator for MultiSortedMap to avoid this?

where the list is traversed twice?


Thanks]]> http://forum.space4j.org/posts/preList/9/12.page http://forum.space4j.org/posts/preList/9/12.page GMT findUsers iterates through all the found items before it returns the result, which is in turn iterated again.

See the problem?

A better approach instead of iterating through all elements and sticking them in a new list object would be to create a custom iterator so that the findUsers method would return this iterator.

This is not a problem for small results, but for big results (>100k) this is not a good idea.

Did you get it?

To summarize: findUsers return a collection that we just iterate through. Returning a iterator would be more appropriate for large subsets.

But, if you assume that you want a Collection with the returned elements, then this implemenation is appropriate. ]]> http://forum.space4j.org/posts/preList/9/15.page http://forum.space4j.org/posts/preList/9/15.page GMT
The second iteration will be done in a client code.


Thanks for reply]]> http://forum.space4j.org/posts/preList/9/18.page http://forum.space4j.org/posts/preList/9/18.page GMT