[PATCH v4 00/14] box: indexes by JSON path

[Kirill Shcherbatov <kshcherbatov@tarantool.org>]

http://github.com/tarantool/tarantool/tree/kshch/gh-1012-json-indexes
https://github.com/tarantool/tarantool/issues/1012

Sometimes field data could have complex document structure.
When this structure is consistent across whole document,
you are able to create an index by JSON path.
This came possible with auxiliary JSON tree structure that
contain intermediate path fields and hashtable.
To speed-up data access by JSON index key_part structure extended
with offset_slot cache that points to field_map item containing
data offset for current tuple. Initialization of the field map is
done by traversing the tree to detect vertices that are missing
in the msgpack.
Introduced offset_slot_cache in key_part to tune data access
for typical scenario of using tuples that have same format.

Kirill Shcherbatov (14):
  box: refactor key_def_find routine
  box: introduce key_def_parts_are_sequential
  box: introduce tuple_field_by_relative_path
  box: introduce tuple_format_add_key_part
  box: introduce tuple_format_sizeof routine
  box: move tuple_field_go_to_{index,key} definition
  box: drop format const qualifier in *init_field_map
  lib: implement JSON tree class for json library
  lib: introduce json_path_normalize routine
  box: introduce JSON indexes
  box: introduce has_json_paths flag in templates
  box: tune tuple_field_raw_by_path for indexed data
  box: introduce offset slot cache in key_part
  box: specify indexes in user-friendly form

 src/box/alter.cc                |   7 +-
 src/box/blackhole.c             |   5 +-
 src/box/engine.h                |  11 +-
 src/box/errcode.h               |   2 +-
 src/box/index_def.c             |   6 +-
 src/box/key_def.c               | 216 ++++++++--
 src/box/key_def.h               |  52 ++-
 src/box/lua/index.c             |  60 +++
 src/box/lua/schema.lua          |  22 +-
 src/box/lua/space.cc            |   5 +
 src/box/memtx_engine.c          |   6 +-
 src/box/memtx_space.c           |   5 +-
 src/box/memtx_space.h           |   2 +-
 src/box/schema.cc               |   4 +-
 src/box/space.c                 |   4 +-
 src/box/space.h                 |   8 +-
 src/box/sysview.c               |   3 +-
 src/box/tuple.c                 |  21 +-
 src/box/tuple_compare.cc        | 119 ++++--
 src/box/tuple_extract_key.cc    | 131 ++++--
 src/box/tuple_format.c          | 864 +++++++++++++++++++++++++++++++---------
 src/box/tuple_format.h          |  73 +++-
 src/box/tuple_hash.cc           |  47 ++-
 src/box/vinyl.c                 |   9 +-
 src/box/vy_log.c                |   3 +-
 src/box/vy_lsm.c                |  40 +-
 src/box/vy_point_lookup.c       |   2 -
 src/box/vy_stmt.c               | 184 +++++++--
 src/lib/json/CMakeLists.txt     |   2 +
 src/lib/json/path.c             |  25 ++
 src/lib/json/path.h             |  18 +
 src/lib/json/tree.c             | 300 ++++++++++++++
 src/lib/json/tree.h             | 260 ++++++++++++
 test/box/misc.result            |  57 +--
 test/engine/tuple.result        | 417 +++++++++++++++++++
 test/engine/tuple.test.lua      | 120 ++++++
 test/unit/json_path.c           | 243 ++++++++++-
 test/unit/json_path.result      |  60 ++-
 test/unit/vy_iterators_helper.c |   6 +-
 test/unit/vy_mem.c              |   2 +-
 test/unit/vy_point_lookup.c     |   2 +-
 41 files changed, 2983 insertions(+), 440 deletions(-)
 create mode 100644 src/lib/json/tree.c
 create mode 100644 src/lib/json/tree.h

-- 
2.7.4