## Context
The object metadata map is becoming quite large and its structure could
be simplified.
We are removing byNameSingular/byNamePlural keys, the former can be
retrieved through a new helper and the latter is not used in the code
base currently.
At field creation we are checking the availability of the name by
comparing it to the other fields' names' on the object; but for
composite fields the fields' names' as indicated in the repository do
not exactly match the column names' on the tables (e.g "createdBy" field
is actually represented by columns createdByName, createdBySource etc.).
In this PR we prevent the conflict with the standard composite fields'
names.
There is still room for errors with the custom composite fields: for
example a custom composite field "address" of type address on a custom
object "listing" will introduce the columns addressAddressStreet1,
addressAddressStreet2 etc. while we won't prevent the user from later
creating a custom field named "addressAddressStreet1".
For now I decided not to tackle this as this seem extremely edgy + would
impact performance on creation of all fields while never actually useful
(I think).
Fixes#6032.
Pg has a char limit on identifiers (= table, columns, enum names) of 63
bytes.
Let's limit the metadata names that will be converted to identifiers
(objects names, fields names, relation names, enum values) to 63 chars.
For the sake of simplicity in the FE we will limit the input length of
labels.
---------
Co-authored-by: Charles Bochet <charles@twenty.com>
Class exception for each metadata module + handler to map on graphql
error
TODO left :
- find a way to call handler on auto-resolvers nestjs query (probably
interceptors)
- discuss what should be done for pre-hooks errors
- discuss what should be done for Unauthorized exception
