tree 2a0f2a4560b8d82d1ec5b3d90c218b030d4406ad
parent 492b6fea99a4f6b90f674f46b1945f609cd1f5f1
author JavierJia <jianfeng.jia@gmail.com> 1445633372 -0700
committer Jianfeng Jia <jianfeng.jia@gmail.com> 1446078056 -0700

ASTERIXDB-1102: VarSize Encoding to store length of String and ByteArray

This patch is to change the encoding format that stores the length value of
the variable length type (e.g. String, ByteArray) from fix-size encoding
(2bytes) to variable-size encoding ( 1 to 5bytes)

It will solve the issue 1102 to enable us to store a String that longer
than 64K. Also for the common case of storing the short string ( <=
127), it will save one byte per string.

Some important changes include:
1. Add one hyracks-util package to consolidate all the hyracks
independent utility functions. It will reduce the chances of having
duplicate utils in different packages.
2. Move parts of Asterix string functions down to Hyracks
UTF8StringPointable object, which will benefit the other dependencies,
such as VXQuery.

Change-Id: I7e95df0f06984b784ebac2c84b97e56a50207d27
Reviewed-on: https://asterix-gerrit.ics.uci.edu/449
Tested-by: Jenkins <jenkins@fulliautomatix.ics.uci.edu>
Reviewed-by: Taewoo Kim <wangsaeu@gmail.com>
Reviewed-by: Jianfeng Jia <jianfeng.jia@gmail.com>