Add neos/contentgraph-doctrinedbaladapter config

to `neos/contentrepositoryregistry` for now

Neos.ContentRepositoryRegistry/Configuration/Objects.yaml

@@ -21,3 +21,13 @@ Neos\ContentRepository\Core\Projection\Workspace\WorkspaceProjectionFactory:
       value: Neos\ContentRepository\Core\Projection\Workspace\WorkspaceProjectionFactory
     2:
       object: 'Doctrine\DBAL\Connection'
+
+# This adds a soft-dependency to the neos/contentgraph-doctrinedbaladapter package
+Neos\ContentGraph\DoctrineDbalAdapter\DoctrineDbalContentGraphProjectionFactory:
+  scope: singleton
+  factoryObjectName: 'Neos\ContentRepositoryRegistry\Infrastructure\GenericObjectFactory'
+  arguments:
+    1:
+      value: 'Neos\ContentGraph\DoctrineDbalAdapter\DoctrineDbalContentGraphProjectionFactory'
+    2:
+      object: 'Doctrine\DBAL\Connection'

Neos.ContentRepositoryRegistry/Configuration/Settings.yaml

@@ -73,13 +73,7 @@ Neos:
             factoryObjectName: Neos\ContentRepository\Core\Projection\ContentStream\ContentStreamProjectionFactory
           'Neos.ContentRepository:Workspace':
             factoryObjectName: Neos\ContentRepository\Core\Projection\Workspace\WorkspaceProjectionFactory
-          # NOTE: the following name must be stable, because we use it f.e. in Neos UI to register
-          #       catchUpHooks for content cache flushing
-          #'Neos.ContentRepository:ContentGraph':
-          #  factoryObjectName: Neos\ContentGraph\…Adapter\…ContentGraphProjectionFactory
-
-
-
-
-
-
+          # NOTE: the following name must be stable, because we use it f.e. in Neos UI to register catchUpHooks for content cache flushing
+          'Neos.ContentRepository:ContentGraph':
+            # NOTE: This introduces a soft-dependency to the neos/contentgraph-doctrinedbaladapter package, but it can be overridden when a different adapter is used
+            factoryObjectName: Neos\ContentGraph\DoctrineDbalAdapter\DoctrineDbalContentGraphProjectionFactory