Update by field names

[Gerold103]

It is possible now to use field names instead of numbers in update operations. It affects all update and upsert functions, such as of space, tuple, index, netbox connector - everything. Note, that field names are valid for update operations, not for update key. You still can't insert a map directly into box. An example:

box.cfg{}
format = {}
format[1] = {'id', 'unsigned'}
format[2] = {'field', 'unsigned'}
s = box.schema.create_space('test', {format = format})
pk = s:create_index('pk')
s:replace{1, 1}
s:update({1}, {'+', 'field', 1})

---
- [1, 2]
...

Introduced by me in tarantool/tarantool@9ee5cf8.

[Totktonada]

Note that it also affects the binary protocol.

[pgulutzan]

I tried "s:update({1}, {{'+', 'field', 1}})" with tarantool-2.2 today and the result was: - error: Illegal parameters, field id must be a number. No error with tarantool-master i.e. version 2.3. But we do not have a version-2.3 manual.

[Gerold103]

Yes, this feature is in the master branch. So what a problem? We can't create tickets on visible changes in the master?