tree 64d86490fa2fc8276539054a5427014420a72f21
parent ee7fbf3a3b5137b109a7f8b225d821652f424bed
author Dave Borowitz <dborowitz@google.com> 1381856759 -0700
committer Dave Borowitz <dborowitz@google.com> 1381937826 +0000

Use TimeUnits for sort key calculations

The unspecified units were confusing when writing tests around these
values, so be explicit about units in variable names and quantities
for conversion.

Use Ints.checkedCast so we fail fast when inserting a change 4000+
years in the future rather than having it not show up in search
results.

Correct the sort key epoch time, which likely had a timezone error
when initially calculated:

$ python -c 'import datetime; print datetime.datetime.fromtimestamp(1222819200L)'
2008-09-30 17:00:00

This mistake does not affect any data; the comment in the code was
just confusingly incorrect.

Change-Id: I6d8bcf4985e91c3d115002db42642049da8c708f