tree 1bd2c05b8833a30dd163422f2028c797cbb17f7d
parent 9dcba3c9fec7c83b9f834c1289fe8dca70be4d32
author Preston Carman <prestonc@apache.org> 1454474182 -0800
committer Preston Carman <prestonc@apache.org> 1454516898 -0800

ASTERIXDB-1281 - Interval format update to AQL and ADM

The new interval format takes a more generic approach to representing intervals.
Here is an example for a date interval:

interval(date("2012-01-01”), date(”2013-04-01”))

Note that the interval type is defined by the arguments to the interval expression.
Currently only date, time, and datetime types are supported for intervals. The new
format is used for ADM and AQL.

In addition to the format change, the internal byte structure of an interval has been
updated. The format looks like the following:

byte tag, T start, T end (where T is a date, time or datetime type)

Note how the tag has been moved to the front. Also with the new sturcture, an
interval is variable length, not fixed length as before.

Change-Id: I009c71b7a445d141e228ba15d56d0b6cf3c8a3f5
Reviewed-on: https://asterix-gerrit.ics.uci.edu/602
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: Till Westmann <tillw@apache.org>