Fix get all collections when no properties and named vector

test/collection/test_config_methods.py

@@ -0,0 +1,73 @@
+
+import pytest
+from weaviate.collections.classes.config_methods import _collection_configs_simple_from_json
+
+def test_collection_config_simple_from_json_with_none_vectorizer_config() -> None:
+    """Test that _collection_configs_simple_from_json handles None vectorizer config."""
+    schema = {
+        "classes": [
+            {
+                "class": "TestCollection",
+                "vectorConfig": {
+                    "default": {
+                        "vectorizer": {
+                            "text2vec-transformers": None
+                        },
+                        "vectorIndexType": "hnsw",
+                        "vectorIndexConfig": {
+                            "skip": False,
+                            "cleanupIntervalSeconds": 300,
+                            "maxConnections": 64,
+                            "efConstruction": 128,
+                            "ef": -1,
+                            "dynamicEfMin": 100,
+                            "dynamicEfMax": 500,
+                            "dynamicEfFactor": 8,
+                            "vectorCacheMaxObjects": 1000000000000,
+                            "flatSearchCutoff": 40000,
+                            "distance": "cosine"
+                        }
+                    }
+                },
+                "properties": [],
+                "invertedIndexConfig": {
+                        "bm25": {"b": 0.75, "k1": 1.2},
+                        "cleanupIntervalSeconds": 60,
+                        "stopwords": {"preset": "en", "additions": None, "removals": None}
+                },
+                "replicationConfig": {"factor": 1, "deletionStrategy": "NoAutomatedResolution"},
+                "shardingConfig": {
+                    "virtualPerPhysical": 128,
+                    "desiredCount": 1,
+                    "actualCount": 1,
+                    "desiredVirtualCount": 128,
+                    "actualVirtualCount": 128,
+                    "key": "_id",
+                    "strategy": "hash",
+                    "function": "murmur3"
+                },
+                "vectorIndexType": "hnsw",
+                "vectorIndexConfig": {
+                    "skip": False,
+                    "cleanupIntervalSeconds": 300,
+                    "maxConnections": 64,
+                    "efConstruction": 128,
+                    "ef": -1,
+                    "dynamicEfMin": 100,
+                    "dynamicEfMax": 500,
+                    "dynamicEfFactor": 8,
+                    "vectorCacheMaxObjects": 1000000000000,
+                    "flatSearchCutoff": 40000,
+                    "distance": "cosine"
+                }
+            }
+        ]
+    }
+
+    configs = _collection_configs_simple_from_json(schema)
+    assert "TestCollection" in configs
+    vec_config = configs["TestCollection"].vector_config
+    assert vec_config is not None
+    assert "default" in vec_config
+    assert vec_config["default"].vectorizer.model == {}
+    assert vec_config["default"].vectorizer.source_properties is None

weaviate/collections/classes/config_methods.py

@@ -256,6 +256,8 @@ def __get_vector_config(
 
             vectorizer_str: str = str(list(vectorizer)[0])
             vec_config: Dict[str, Any] = named_vector["vectorizer"][vectorizer_str]
+            if vec_config is None:
+                vec_config = {}
             props = vec_config.pop("properties", None)
 
             vector_index_config = __get_vector_index_config(named_vector)