chore: import upstream snapshot with attribution

core/rootobject/init.go

@@ -0,0 +1,47 @@
+// Copyright 2025 Dolthub, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package rootobject
+
+import (
+	"github.com/dolthub/dolt/go/libraries/doltcore/doltdb"
+	"github.com/dolthub/dolt/go/libraries/doltcore/merge"
+
+	"github.com/dolthub/doltgresql/core/conflicts"
+	pgmerge "github.com/dolthub/doltgresql/core/merge"
+	"github.com/dolthub/doltgresql/core/rootobject/objinterface"
+	"github.com/dolthub/doltgresql/core/storage"
+)
+
+// Init initializes the package
+func Init() {
+	merge.MergeRootObjects = HandleMerge
+	pgmerge.CreateConflict = CreateConflict
+	conflicts.DeserializeRootObject = DeserializeRootObject
+	conflicts.DiffRootObjects = DiffRootObjects
+	conflicts.GetFieldType = GetFieldType
+	conflicts.ResolveNameExternal = resolveNameFromObjects
+	conflicts.UpdateField = UpdateField
+	doltdb.RootObjectDiffFromRow = objinterface.DiffFromRow
+	for _, collFuncs := range globalCollections {
+		if collFuncs == nil {
+			continue
+		}
+		serializer := collFuncs.Serializer()
+		storage.RootObjectSerializations = append(storage.RootObjectSerializations, storage.RootObjectSerialization{
+			Bytes:        serializer.Bytes,
+			RootValueAdd: serializer.RootValueAdd,
+		})
+	}
+}