# Introduction
Extracting the legacy fields build and dispatch out of the object one to
follow the generic flat entity build, also update caches entries for
object
## Main tasks
- flat field map cache
- flat field builder
- refactored the dispatch matrix to return flat entity maps instead of
flat entity arrays
- orchestrator aggregator
- removing legacy code
- making universal identifier aka standardId of standard field for
custom object deterministically dynamic
- perfs debug logs for v2
## TODO
- [x] Refactor the generic entity builder to be dependency flat maps in
order to main foreign keys list in flat parent
- [x] Refactor the flat object metadata to contain the array of related
fields and avoid costy find object fields
- [ ] Improve the create field handler to handle multiple field at once
- [ ] Refactor the dispatch to embbed the comparison
- [ ] Improve perf by extracting from elements out of existing
- [ ] Fix the labelIdentifierId validators on object before field
creation ( integ tests are in failing mode )
## Debug logs snippet
```ts
[EntityBuilder fieldMetadata] matrix computation: 0.027ms
[EntityBuilder fieldMetadata] creation validation: 0.001ms
[EntityBuilder fieldMetadata] deletion validation: 0.293ms
[EntityBuilder fieldMetadata] update validation: 0.006ms
[EntityBuilder fieldMetadata] entity processing: 0.363ms
[EntityBuilder fieldMetadata] validateAndBuild: 0.455ms
[EntityBuilder index] matrix computation: 0.005ms
[EntityBuilder index] creation validation: 0.001ms
[EntityBuilder index] deletion validation: 0.146ms
[EntityBuilder index] update validation: 0.004ms
[EntityBuilder index] entity processing: 0.199ms
[EntityBuilder index] validateAndBuild: 0.228ms
[Runner] Initial cache retrieval: 0.549ms
[BaseWorkspaceMigrationRunnerActionHandlerService] delete_index executeForWorkspaceSchema: 11.665ms
[BaseWorkspaceMigrationRunnerActionHandlerService] delete_index executeForMetadata: 12.864ms
[BaseWorkspaceMigrationRunnerActionHandlerService] delete_field executeForWorkspaceSchema: 1.476ms
[BaseWorkspaceMigrationRunnerActionHandlerService] delete_field executeForMetadata: 6.816ms
[BaseWorkspaceMigrationRunnerActionHandlerService] delete_field executeForWorkspaceSchema: 0.062ms
[BaseWorkspaceMigrationRunnerActionHandlerService] delete_field executeForMetadata: 0.889ms
[Runner] Transaction execution: 23.434ms
[Runner] Cache invalidation: 316.662ms
[Runner] Total execution: 340.767ms
```
As you can see cache invalidation is way to long, we could replace the
cache by the optimistic in the end
# Introduction
- FlatFieldMetadataType validators hashmap
- Do not fail fast on validation but aggregate errors
- Implemented `enum` validation
- Plugged the new v2 dynamic call in the field metadata service v2
## What's next:
- Implem integration tests to make things run 🙃
- migrate existing settings valdiation
- Finish the create object metadata service
- Handle update input transpilation and validation
## Open question
Should we implement, not covered validation ?, adding strictness now or
never.
This will be required by the import anw
## Discovered issue with cache
Currently the cache is not accurately typed, `fieldsById` map are not
storing any relations.
Which means the current transpilation tools are hitting undefined at
runtime
In the best of the world we will refactor the cache to be storing
`FlatObjectMetadata` and `FlatFieldMetadata` so we don't even have to
transpile them for validation and so on
But it would require to refactor the loaders that returns the cache to
the front on hit as FieldMetadataEntity, so we might land on a lighter
solution to rather add a new `getExistingFlatCache` that handles the
transpilation itself
About to do that in an other PR to be discussed with Coco
Paul Rastoin