[PATCH v5 0/9] 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.
New JSON tree class is used to manage tuple_field(s) defined for
format. This allows to work with fields in unified way.
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 (9):
  box: refactor json_path_parser class
  lib: implement JSON tree class for json library
  box: manage format fields with JSON tree class
  lib: introduce json_path_cmp 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             |   8 +-
 src/box/key_def.c               | 171 +++++++++--
 src/box/key_def.h               |  31 +-
 src/box/lua/index.c             |  66 +++++
 src/box/lua/schema.lua          |  22 +-
 src/box/lua/space.cc            |   5 +
 src/box/lua/tuple.c             |   2 +-
 src/box/memtx_engine.c          |   7 +-
 src/box/memtx_space.c           |   5 +-
 src/box/memtx_space.h           |   2 +-
 src/box/schema.cc               |   4 +-
 src/box/space.c                 |   6 +-
 src/box/space.h                 |   8 +-
 src/box/sql.c                   |  17 +-
 src/box/sql/build.c             |   6 +-
 src/box/sql/select.c            |   6 +-
 src/box/sql/where.c             |   1 +
 src/box/sysview.c               |   3 +-
 src/box/tuple.c                 |  40 +--
 src/box/tuple_compare.cc        | 125 +++++---
 src/box/tuple_extract_key.cc    | 121 +++++---
 src/box/tuple_format.c          | 633 ++++++++++++++++++++++++++++++++--------
 src/box/tuple_format.h          |  80 ++++-
 src/box/tuple_hash.cc           |  47 ++-
 src/box/vinyl.c                 |  10 +-
 src/box/vy_log.c                |   3 +-
 src/box/vy_lsm.c                |   5 +-
 src/box/vy_point_lookup.c       |   2 -
 src/box/vy_stmt.c               | 168 +++++++++--
 src/lib/json/CMakeLists.txt     |   3 +-
 src/lib/json/json.c             | 537 ++++++++++++++++++++++++++++++++++
 src/lib/json/json.h             | 296 +++++++++++++++++++
 src/lib/json/path.c             | 244 ----------------
 src/lib/json/path.h             | 112 -------
 test/box/misc.result            |   1 +
 test/engine/tuple.result        | 462 +++++++++++++++++++++++++++++
 test/engine/tuple.test.lua      | 135 +++++++++
 test/unit/json_path.c           | 281 ++++++++++++++++--
 test/unit/json_path.result      |  51 +++-
 test/unit/vy_iterators_helper.c |   6 +-
 test/unit/vy_mem.c              |   2 +-
 test/unit/vy_point_lookup.c     |   2 +-
 46 files changed, 3006 insertions(+), 755 deletions(-)
 create mode 100644 src/lib/json/json.c
 create mode 100644 src/lib/json/json.h
 delete mode 100644 src/lib/json/path.c
 delete mode 100644 src/lib/json/path.h

-- 
2.7.4