From 261edaddb148291996d413ca3351c6658735483d Mon Sep 17 00:00:00 2001
From: jlahovnik <julia.lahovnik@csgroup.eu>
Date: Fri, 24 Apr 2026 20:38:03 +0200
Subject: [PATCH 1/2] fix: remove sci:doi from summaries

---
 eodag/api/collection.py | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/eodag/api/collection.py b/eodag/api/collection.py
index c05b09be14..83dac3d301 100644
--- a/eodag/api/collection.py
+++ b/eodag/api/collection.py
@@ -140,9 +140,6 @@ class Collection(StacCollection):
     processing_level: Optional[list[str]] = Field(
         default=None, alias="processing:level", exclude=True, repr=False
     )
-    sci_doi: Optional[list[str]] = Field(
-        default=None, alias="sci:doi", exclude=True, repr=False
-    )
     eodag_sensor_type: Optional[list[str]] = Field(
         default=None, alias="eodag:sensor_type", exclude=True, repr=False
     )

From f8c7f2abdefe852bbeaa4eecc1f4255927d6350c Mon Sep 17 00:00:00 2001
From: Nicola Dalpasso <nicola.dalpasso@csgroup.de>
Date: Mon, 27 Apr 2026 16:20:13 +0200
Subject: [PATCH 2/2] feat: add federation extension with SQLite

---
 eodag/api/collection.py        |  8 +++++++-
 eodag/databases/base.py        |  1 +
 eodag/databases/sqlite.py      | 18 +++++++++++++++++-
 eodag/types/stac_extensions.py | 16 ++++++++++++++++
 4 files changed, 41 insertions(+), 2 deletions(-)

diff --git a/eodag/api/collection.py b/eodag/api/collection.py
index 83dac3d301..1f9aed427e 100644
--- a/eodag/api/collection.py
+++ b/eodag/api/collection.py
@@ -133,6 +133,11 @@ class Collection(StacCollection):
         default=None, alias="federation:backends"
     )
 
+    # Federation extension fields
+    federation: Optional[dict[str, dict[str, Optional[str]]]] = Field(
+        default=None, alias="federation"
+    )
+
     # summaries
     constellation: Optional[list[str]] = Field(default=None, exclude=True, repr=False)
     instruments: Optional[list[str]] = Field(default=None, exclude=True, repr=False)
@@ -163,7 +168,8 @@ class Collection(StacCollection):
 
     # only STAC fields
     __stac_fields__: ClassVar[list[str]] = list(StacCollection.model_fields.keys()) + [
-        "federation_backends"
+        "federation_backends",
+        "federation",
     ]
 
     # mandatory STAC fields which are fixed by their default value
diff --git a/eodag/databases/base.py b/eodag/databases/base.py
index 815dbd1f5e..ed11f0858b 100644
--- a/eodag/databases/base.py
+++ b/eodag/databases/base.py
@@ -49,6 +49,7 @@
     "geometry": "geometry",
     "content": "content",
     "federation:backends": "federation_backends",
+    "federation": "federation",
     "priority": "priority",
 }
 
diff --git a/eodag/databases/sqlite.py b/eodag/databases/sqlite.py
index 0d3a3e8747..7949a8c1aa 100644
--- a/eodag/databases/sqlite.py
+++ b/eodag/databases/sqlite.py
@@ -428,6 +428,18 @@ def set_priority(self, name: str, priority: int) -> None:
             )
             self._refresh_collections_denorm([name])
 
+    def set_status(self, status: dict[str, dict[str, Any]]) -> None:
+        """
+        Set the federation status.
+
+        :param status: Dictionary mapping collection IDs to their backend status.
+        """
+        with self._con:
+            self._executemany(
+                "UPDATE collections SET federation = ? WHERE id = ? OR internal_id = ?",
+                [(status, c, c) for c, status in status.items()],
+            )
+
     def collections_search(
         self,
         geometry: Optional[Union[str, dict[str, float], BaseGeometry]] = None,
@@ -501,7 +513,8 @@ def collections_search(
 
         sql = (
             f'SELECT json(c.content) AS "c.content [collection_dict]", '
-            f'json(c.federation_backends) as "c.federation_backends [dict]"{select_score} '
+            f'json(c.federation_backends) as "c.federation_backends [dict]", '
+            f'json(c.federation) as "c.federation [dict]"{select_score} '
             f"{from_clause} WHERE {full_where}{order_by}"
         )
         if limit is not None:
@@ -511,6 +524,7 @@ def collections_search(
         for row in self._execute(sql, tuple(params) or None).fetchall():
             coll = row["c.content"]
             coll["federation:backends"] = row["c.federation_backends"]
+            coll["federation"] = row["c.federation"]
             collections_list.append(coll)
 
         return collections_list, number_matched
@@ -649,6 +663,7 @@ def _adapt_collection(collection: Collection) -> str:
     data["_id"] = collection._id
     # remove "federation:backends" from the stored content as it is computed in a separate column
     del data["federation:backends"]
+    del data["federation"]
     return orjson.dumps(data).decode()
 
 
@@ -814,6 +829,7 @@ def create_collections_table(con: sqlite3.Connection) -> None:
                 END
             ) STORED,
             federation_backends {_CONTENT_TYPE},
+            federation {_CONTENT_TYPE},
             priority INTEGER
         );
         """
diff --git a/eodag/types/stac_extensions.py b/eodag/types/stac_extensions.py
index 0a7ad15ca0..bcc6e094de 100644
--- a/eodag/types/stac_extensions.py
+++ b/eodag/types/stac_extensions.py
@@ -390,6 +390,22 @@ class DatacubeExtension(BaseStacExtension):
     field_name_prefix: Optional[str] = "cube"
 
 
+class FederationFields(BaseModel):
+    """
+    https://github.com/Open-EO/openeo-api/tree/master/extensions/federation
+    """
+
+    federation: Annotated[dict[str, dict[str, Any]], Field(None)]
+
+
+class FederationExtension(BaseStacExtension):
+    """STAC federation extension."""
+
+    FIELDS: type[BaseModel] = FederationFields
+
+    field_name_prefix: Optional[str] = "federation"
+
+
 STAC_EXTENSIONS = [
     SarExtension(),
     SatelliteExtension(),