# Morph Relation needs some work on the core API
Especially on the Morph types
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## Focus Areas:
- GraphQL schema generation
- Query parsing and field selection
- Morph relation field support
- Input type definition preparation
## Context
Add an eventEmitter instance to twenty datasources so we can emit DB
events.
Add input and output formatting to twenty orm (formatData, formatResult)
Those 2 elements simplified existing logic when we interact with the
ORM, input will be formatted by the ORM so we can directly use
field-like structure instead of column-like. The output will be
formatted, for builder queries it will be in `result.generatedMaps`
where `result.raw` preserves the previous column-like structure.
Important change: We now have an authContext that we can pass when we
get a repository, this will be used for the different events emitted in
the ORM. We also removed the caching for repositories as it was not
scaling well and not necessary imho
Note: An upcoming PR should handle the onDelete: cascade behavior where
we send DESTROY events in cascade when there is an onDelete: CASCADE on
the FK.
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Co-authored-by: Charles Bochet <charles@twenty.com>
Fixes
https://github.com/twentyhq/core-team-issues/issues/255?issue=twentyhq%7Ccore-team-issues%7C1214.
Until then, in the endpoints of our dynamic schema, we were querying all
columns and then formatting the result by removing the non-requested
fields (fields not mentioned in the graphql Query) from the result.
This is not compatible with field-level permissions that we are about to
introduce because users would see their request denied if they have
restricted rights on any of the fields of the objects they are querying,
even if they did not query it in the first place.
To prepare for this change, we are restricting the list of queried
columns to those made necessary by the graphql query.
I only made the changes in the dynamic schema for now. We will
potentially need to do updates to other part of the app that use
createQueryBuilder directly or not (for instance, when calling
repository methods such as .findOne()), but they mostly regard system
objects that are not subject to permissions or are executed by entities
that bypass permission such as jobs creating People and Companies from
their email sync.
No changes have been brought to existingRecords related logic in the
dynamic schema because @Weiko is currently working on it, so I may need
to adapt the new logic after he is done.
No feature flag have been added so far as this should not change
anything at the moment.
In this PR:
## Improve recompute metadata cache performance. We are aiming for
~100ms
Deleting relationMetadata table and FKs pointing on it
Fetching indexMetadata and indexFieldMetadata in a separate query as
typeorm is suboptimizing
## Remove caching lock
As recomputing the metadata cache is lighter, we try to stop preventing
multiple concurrent computations. This also simplifies interfaces
## Introduce self recovery mecanisms to recompute cache automatically if
corrupted
Aka getFreshObjectMetadataMaps
## custom object resolver performance improvement: 1sec to 200ms
Double check queries and indexes used while creating a custom object
Remove the queries to db to use the cached objectMetadataMap
## reduce objectMetadataMaps to 500kb
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We used to stored 3 fieldMetadataMaps (byId, byName, byJoinColumnName).
While this is great for devXP, this is not great for performances.
Using the same mecanisme as for objectMetadataMap: we only keep byIdMap
and introduce two otherMaps to idByName, idByJoinColumnName to make the
bridge
## Add dataloader on IndexMetadata (aka indexMetadataList in the API)
## Improve field resolver performances too
## Deprecate ClientConfig
This is a first PR to remove old relation logic
Next steps:
- remove relationMetadata from cache
- remove relationMetadata table content and structure
- refactor relationDefinition to leverage field.settings instead
## Context
Regression was introduced 3 weeks ago when we added relations v2.
Because the relation logic is recursive during the life of a request, we
were querying the featureFlags many times.
We are now always using the featureFlag map and it's now available in
the base resolver so we don't need to query it everywhere, preferably
passing it as a parameter instead.
Note: We should introduce a cache for featureFlags in the future, this
is something easy to control and invalidate when needed.
## Context
All objects have '...duplicates' resolver but only companies and people
have duplicate criteria (hard coded constant).
Gql schema and resolver should be created only if duplicate criteria
exist.
## Solution
- Add a new @WorkspaceDuplicateCriteria decorator at object level,
defining duplicate criteria for given object.
- Add a new duplicate criteria field in ObjectMetadata table
- Update schema and resolver building logic
- Update front requests for duplicate check (only for object with
criteria defined)
closes https://github.com/twentyhq/twenty/issues/9828
## Context
Now that each operation has its own resolver, we need to make sure they
all map to query arg getters. CreateOne was not properly mapped to the
position getter which made record creation fail because "position:
first" was not properly converted to a float.
Also fixing queries with custom object where we were wrongly using the
table name instead of entity name
Fixes https://github.com/twentyhq/twenty/issues/8300
## Context
API events were created too late and were already formatted as Gql
responses (including nesting with edges/node/type + formatting that
should not exist in an event payload). This PR moves the emit logic to
the resolver where we actually do the DB query
Note: Also added RESTORED events
## 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.
Fixes https://github.com/twentyhq/twenty/issues/6859
This PR adds all the remaining resolvers for
- updateOne/updateMany
- createOne/createMany
- deleteOne/deleteMany
- destroyOne
- restoreMany
Also
- refactored the graphql-query-runner to be able to add other resolvers
without too much boilerplate.
- add missing events that were not sent anymore as well as webhooks
- make resolver injectable so they can inject other services as well
- use objectMetadataMap from cache instead of computing it multiple time
- various fixes (mutation not correctly parsing JSON, relationHelper
fetching data with empty ids set, ...)
Next steps:
- Wrapping query builder to handle DB events properly
- Move webhook emitters to db event listener
- Add pagination where it's missing (findDuplicates, nested relations,
etc...)
Guillim