Deprecate object metadata maps in favor of flat entities (#16080)

## Context
Deprecating the old objectMetadataMap type in favour of split flat
entities to match with our new caching.
In the long run, trying to achieve:
- Better performance through caching
- Consistent data access patterns across the codebase
- Reduced database queries

Now that everything is based on flat entities, which are cached, we can
finish the refactoring of workspace context cache which should already
improve performances.
Then the last step will be to consume that new cache in the new global
datasource to get rid of the many workspace datasources stored in the
server

packages/twenty-server/src/engine/twenty-orm/repository/permissions.utils.ts

@@ -9,12 +9,14 @@ import { type QueryExpressionMap } from 'typeorm/query-builder/QueryExpressionMa
 
 import { ProcessAggregateHelper } from 'src/engine/api/graphql/graphql-query-runner/helpers/process-aggregate.helper';
 import { InternalServerError } from 'src/engine/core-modules/graphql/utils/graphql-errors.util';
+import { type FlatEntityMaps } from 'src/engine/metadata-modules/flat-entity/types/flat-entity-maps.type';
+import { type FlatFieldMetadata } from 'src/engine/metadata-modules/flat-field-metadata/types/flat-field-metadata.type';
+import { type FlatObjectMetadata } from 'src/engine/metadata-modules/flat-object-metadata/types/flat-object-metadata.type';
 import {
   PermissionsException,
   PermissionsExceptionCode,
   PermissionsExceptionMessage,
 } from 'src/engine/metadata-modules/permissions/permissions.exception';
-import { type ObjectMetadataMaps } from 'src/engine/metadata-modules/types/object-metadata-maps';
 import { getColumnNameToFieldMetadataIdMap } from 'src/engine/twenty-orm/utils/get-column-name-to-field-metadata-id.util';
 
 const getTargetEntityAndOperationType = (
@@ -66,7 +68,9 @@ type ValidateOperationIsPermittedOrThrowArgs = {
   entityName: string;
   operationType: OperationType;
   objectsPermissions: ObjectsPermissions;
-  objectMetadataMaps: ObjectMetadataMaps;
+  flatObjectMetadataMaps: FlatEntityMaps<FlatObjectMetadata>;
+  flatFieldMetadataMaps: FlatEntityMaps<FlatFieldMetadata>;
+  objectIdByNameSingular: Record<string, string>;
   selectedColumns: string[] | '*';
   allFieldsSelected: boolean;
   updatedColumns: string[];
@@ -76,13 +80,14 @@ export const validateOperationIsPermittedOrThrow = ({
   entityName,
   operationType,
   objectsPermissions,
-  objectMetadataMaps,
+  flatObjectMetadataMaps,
+  flatFieldMetadataMaps,
+  objectIdByNameSingular,
   selectedColumns,
   allFieldsSelected,
   updatedColumns,
 }: ValidateOperationIsPermittedOrThrowArgs) => {
-  const objectMetadataIdForEntity =
-    objectMetadataMaps.idByNameSingular[entityName];
+  const objectMetadataIdForEntity = objectIdByNameSingular[entityName];
 
   if (!isNonEmptyString(objectMetadataIdForEntity)) {
     throw new PermissionsException(
@@ -91,7 +96,7 @@ export const validateOperationIsPermittedOrThrow = ({
     );
   }
 
-  const objectMetadata = objectMetadataMaps.byId[objectMetadataIdForEntity];
+  const objectMetadata = flatObjectMetadataMaps.byId[objectMetadataIdForEntity];
 
   if (!isDefined(objectMetadata)) {
     throw new PermissionsException(
@@ -106,8 +111,10 @@ export const validateOperationIsPermittedOrThrow = ({
     return;
   }
 
-  const columnNameToFieldMetadataIdMap =
-    getColumnNameToFieldMetadataIdMap(objectMetadata);
+  const columnNameToFieldMetadataIdMap = getColumnNameToFieldMetadataIdMap(
+    objectMetadata,
+    flatFieldMetadataMaps,
+  );
 
   const permissionsForEntity = objectsPermissions[objectMetadataIdForEntity];
 
@@ -194,14 +201,18 @@ export const validateOperationIsPermittedOrThrow = ({
 type ValidateQueryIsPermittedOrThrowArgs = {
   expressionMap: QueryExpressionMap;
   objectsPermissions: ObjectsPermissions;
-  objectMetadataMaps: ObjectMetadataMaps;
+  flatObjectMetadataMaps: FlatEntityMaps<FlatObjectMetadata>;
+  flatFieldMetadataMaps: FlatEntityMaps<FlatFieldMetadata>;
+  objectIdByNameSingular: Record<string, string>;
   shouldBypassPermissionChecks: boolean;
 };
 
 export const validateQueryIsPermittedOrThrow = ({
   expressionMap,
   objectsPermissions,
-  objectMetadataMaps,
+  flatObjectMetadataMaps,
+  flatFieldMetadataMaps,
+  objectIdByNameSingular,
   shouldBypassPermissionChecks,
 }: ValidateQueryIsPermittedOrThrowArgs) => {
   if (shouldBypassPermissionChecks) {
@@ -222,7 +233,9 @@ export const validateQueryIsPermittedOrThrow = ({
       validatePermissionsForJoinsAndReturnSelectsWithoutJoins({
         expressionMap,
         objectsPermissions,
-        objectMetadataMaps,
+        flatObjectMetadataMaps,
+        flatFieldMetadataMaps,
+        objectIdByNameSingular,
       });
 
     expressionMapSelectsOnMainEntity = selectsWithoutJoinedAliases;
@@ -266,7 +279,9 @@ export const validateQueryIsPermittedOrThrow = ({
     entityName: mainEntity,
     operationType: operationType as OperationType,
     objectsPermissions,
-    objectMetadataMaps,
+    flatObjectMetadataMaps,
+    flatFieldMetadataMaps,
+    objectIdByNameSingular,
     selectedColumns,
     allFieldsSelected,
     updatedColumns,
@@ -276,11 +291,15 @@ export const validateQueryIsPermittedOrThrow = ({
 const validatePermissionsForJoinsAndReturnSelectsWithoutJoins = ({
   expressionMap,
   objectsPermissions,
-  objectMetadataMaps,
+  flatObjectMetadataMaps,
+  flatFieldMetadataMaps,
+  objectIdByNameSingular,
 }: {
   expressionMap: QueryExpressionMap;
   objectsPermissions: ObjectsPermissions;
-  objectMetadataMaps: ObjectMetadataMaps;
+  flatObjectMetadataMaps: FlatEntityMaps<FlatObjectMetadata>;
+  flatFieldMetadataMaps: FlatEntityMaps<FlatFieldMetadata>;
+  objectIdByNameSingular: Record<string, string>;
 }) => {
   const joinAttributesAliases = new Set(
     expressionMap.joinAttributes.map((join) => join.alias.name),
@@ -313,7 +332,9 @@ const validatePermissionsForJoinsAndReturnSelectsWithoutJoins = ({
             entityName: entity.name,
             operationType: 'select' as OperationType,
             objectsPermissions,
-            objectMetadataMaps,
+            flatObjectMetadataMaps,
+            flatFieldMetadataMaps,
+            objectIdByNameSingular,
             selectedColumns,
             allFieldsSelected: false,
             updatedColumns: [],