tree e13b66d94ee5dbb8204638910e5a52ac2f27a869
parent f1e5e8722b4cab27ba740258659cd797425d77d5
author ulfjack <ulfjack@google.com> 1558628362 -0700
committer Copybara-Service <copybara-worker@google.com> 1558628443 -0700

Query performance: use a custom Iterator impl

For queries that primarily list the targets in a package or set of
packages, this can be on the critical path. I've seen significant
performance improvements with this change (after a number of other
fixes), and the implementation is not significantly more complex than
before, so I'm calling it a net win.

Also add some basic tests for the values() collection.

PiperOrigin-RevId: 249656957